/* LMS - Branded palette (rail blue, steel blue, light blue, orange, graphite, off-white, light grey) */
:root {
    --rail-blue: #0d46bf;
    --steel-blue: #3E6BB3;
    --light-blue: #6FA6FF;
    --orange: #ef8244;
    --graphite: #2F3542;
    --off-white: #f1f0ee;
    --light-grey: #E3E5EA;

    --bg: #f1f0ee;
    --surface: #ffffff;
    --text: #2F3542;
    --text-muted: #5c6370;
    --primary: #0d46bf;
    --primary-hover: #0a3899;
    --border: #E3E5EA;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,.08);
    --danger: #dc2626;
    --success: #16a34a;
    --on-primary: #ffffff;
    --badge-bg: #E3E5EA;
    --badge-text: #0d46bf;
    --card-visual-from: #E3E5EA;
    --card-visual-to: #f1f0ee;
    --msg-error-bg: #fef2f2;
    --msg-success-bg: #f0fdf4;
}

/* Dark (night) mode – branded */
html[data-theme="dark"] {
    color-scheme: dark;
    --bg: #1a1d24;
    --surface: #2F3542;
    --bg-soft: #252930;
    --text: #f1f0ee;
    --text-muted: #9aa0a6;
    --primary: #6FA6FF;
    --primary-hover: #3E6BB3;
    --border: #3d4452;
    --shadow: 0 1px 3px rgba(0,0,0,.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,.4);
    --danger: #ef4444;
    --success: #22c55e;
    --on-primary: #ffffff;
    --badge-bg: #3E6BB3;
    --badge-text: #6FA6FF;
    --card-visual-from: #2F3542;
    --card-visual-to: #252930;
    --msg-error-bg: rgba(239, 68, 68, 0.15);
    --msg-success-bg: rgba(34, 197, 94, 0.15);
}

* {
    box-sizing: border-box;
}
body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

/* Header */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
    text-decoration: none;
}
.nav-main {
    display: flex;
    gap: 1rem;
}
.nav-main a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.35rem 0.6rem;
    border-radius: 6px;
}
.nav-main a:hover,
.nav-main a.active {
    color: var(--primary);
    background: rgba(13, 70, 191, .08);
}
.header-user {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.user-name {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Main content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* ========== App layout (sidebar + topbar) ========== */
.app-layout {
    display: flex;
    min-height: 100vh;
}
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 240px;
    min-width: 240px;
    height: 100vh;
    overflow: hidden;
    z-index: 100;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.sidebar-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1.1rem;
}
.sidebar-logo-img {
    display: block;
    max-height: 76px;
    max-width: 100%;
    width: auto;
    object-fit: contain;
}
.sidebar-nav {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 0.75rem 0;
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1.25rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: background .15s, color .15s;
}
.sidebar-link:hover {
    background: rgba(13, 70, 191, .06);
    color: var(--primary);
}
.sidebar-link.active {
    background: var(--primary);
    color: var(--on-primary);
}
.sidebar-link.active .sidebar-icon-img-light { display: none; }
.sidebar-link.active .sidebar-icon-img-dark { display: block; }
.sidebar-icon {
    width: 22px;
    text-align: center;
    font-size: 1rem;
}
.sidebar-icon-img-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}
.sidebar-icon-img {
    display: block;
    width: 22px;
    height: 22px;
    object-fit: contain;
}
.sidebar-icon-img-dark { display: none; }
.sidebar-icon-img-light { display: block; }
html[data-theme="dark"] .sidebar-icon-img-light { display: none; }
html[data-theme="dark"] .sidebar-icon-img-dark { display: block; }
.sidebar-icon-dash { font-size: 1.1rem; }
.sidebar-footer {
    flex-shrink: 0;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border);
}
.sidebar-powered {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}
.sidebar-powered-text {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
}
.sidebar-powered-logo {
    display: block;
    max-height: 32px;
    max-width: 100%;
}
.sidebar-powered-logo-dark { display: none; }
.sidebar-powered-logo-light { display: block; }
html[data-theme="dark"] .sidebar-powered-logo-light { display: none; }
html[data-theme="dark"] .sidebar-powered-logo-dark { display: block; }

.sidebar-logo-img-dark { display: none; }
.sidebar-logo-img-light { display: block; }
html[data-theme="dark"] .sidebar-logo-img-light { display: none; }
html[data-theme="dark"] .sidebar-logo-img-dark { display: block; }
html[data-theme="dark"] .sidebar-logo-img { max-height: 76px; } /* ίδιο με light για ίδιο width */

.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    margin-left: 240px;
}

.burger-btn {
    display: none;
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 101;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: background 0.2s;
}
.burger-btn:hover { background: var(--border); }
.burger-line {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.2s, opacity 0.2s;
}
body.mobile-menu-open .burger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.mobile-menu-open .burger-line:nth-child(2) { opacity: 0; }
body.mobile-menu-open .burger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity 0.25s;
}

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.topbar-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1rem;
}
.topbar-logo-icon {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--on-primary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}
.topbar-search {
    flex: 1;
    max-width: 400px;
    margin: 0 auto;
    position: relative;
}
.topbar-search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    opacity: .6;
}
.topbar-search input {
    width: 100%;
    padding: 0.5rem 0.75rem 0.5rem 2.25rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--bg);
}
.topbar-search input::placeholder { color: var(--text-muted); }
.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: auto;
}
.topbar-icon-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    cursor: default;
    font-size: 1.1rem;
}
.topbar-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.topbar-user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.topbar-user-name { font-size: 0.9rem; font-weight: 500; color: var(--text); }
.topbar-user-role { font-size: 0.75rem; color: var(--text-muted); }
.theme-toggle {
    padding: 0.4rem 0.6rem;
    min-width: 2.25rem;
}
.theme-toggle .theme-toggle-sun { display: none; }
.theme-toggle .theme-toggle-moon { display: inline; }
html[data-theme="dark"] .theme-toggle .theme-toggle-sun { display: inline; }
html[data-theme="dark"] .theme-toggle .theme-toggle-moon { display: none; }

.theme-toggle-fixed {
    position: fixed;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 1000;
}

.topbar-user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #fed7aa;
    color: #9a3412;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}
.app-content {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: 1.5rem 1.5rem 0 1.5rem;
    background: var(--bg);
}
.app-content > main {
    flex: 1 1 auto;
    min-height: 0;
}
.app-content main {
    max-width: none;
    margin: 0;
    padding: 0;
}
.app-content main:not(.dashboard-page) {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}
.app-content main.structure-config-page,
.app-content main.exams-page,
.app-content main.exam-edit-page,
.app-content main.exam-take-page,
.app-content main.users-page,
.app-content main.user-create-page,
.app-content main.user-edit-page,
.app-content main.setup-2fa-required-page,
.app-content main.calendar-page,
.app-content main.certifications-list-page,
.app-content main.certificate-page,
.app-content main.course-edit-page,
.app-content main.course-open-page,
.app-content main.courses-archive,
.app-content main.my-courses-page,
.app-content main.app-settings-page,
.app-content main.announcements-page,
.app-content main.announcement-edit-page,
.app-content main.statistics-page,
.app-content main.terms-page,
.app-content main.content-edit-page,
.app-content main.content-view-page,
.app-content main.section-edit-page,
.app-content main.privacy-page {
    max-width: none;
    margin-left: 0;
    margin-right: 0;
    width: 100%;
}

/* Users page tabs (Χρήστες / Αποκλεισμοί / 2FA) */
.users-page-tabs .breadcrumb { margin-bottom: 0.5rem; }
.users-page-tabs .page-title { margin-bottom: 0.75rem; }
.users-tab-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
}
.users-tab-link {
    padding: 0.5rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9375rem;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    border-radius: var(--radius) var(--radius) 0 0;
}
.users-tab-link:hover { color: var(--text); }
.users-tab-link.active {
    color: var(--primary);
    font-weight: 600;
    border-bottom-color: var(--primary);
}
.users-tab-panel { margin-bottom: 1rem; }

/* Πίνακας χρηστών: κουμπί Επεξεργασία + στήλη 2FA */
.users-edit-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.users-edit-btn:hover {
    background: var(--bg);
    border-color: var(--primary);
    color: var(--primary);
}
/* Πίνακας χρηστών: μικρότερα font ώστε να χωρά σε μία σειρά */
.users-list-table th { font-size: 0.75rem; }
.users-list-table td { font-size: 0.8125rem; }
.users-list-table .users-edit-btn { font-size: 0.8rem; padding: 0.35rem 0.6rem; }
.users-list-table .th-last-login,
.users-list-table .cell-last-login { white-space: nowrap; }

.users-page .th-2fa { width: 4rem; text-align: center; }
.users-page .th-actions { width: 1px; white-space: nowrap; }
.users-page .td-2fa { text-align: center; vertical-align: middle; }
.users-2fa-checkbox {
    width: 1.1rem;
    height: 1.1rem;
    cursor: default;
    accent-color: var(--primary);
}

/* My Courses – empty state (χωρίς μαθήματα) */
.my-courses-page .page-title { margin-bottom: 1.5rem; }
.my-courses-empty {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 3rem 2rem;
    text-align: center;
    max-width: 480px;
    margin: 0 auto;
}
.my-courses-empty-icon {
    color: var(--text-muted);
    opacity: 0.6;
    margin-bottom: 1.25rem;
}
.my-courses-empty-icon svg {
    display: block;
    margin: 0 auto;
}
.my-courses-empty-title {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
}
.my-courses-empty-text {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Πλήρες πλάτος όταν λίγο/κενό περιεχόμενο (courses, announcements list & single) */
.app-content main.courses-archive,
.app-content main.announcements-page,
.app-content main.announcement-single-page,
.app-content main.announcement-edit-page,
.app-content main.course-open-page,
.app-content main.content-view-page {
    width: 100%;
}

/* ========== Όροι Χρήσης / Πολιτική Απορρήτου (full-width legal pages) ========== */
.legal-page .breadcrumb { margin-bottom: 1rem; }
.legal-page .legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}
.legal-page .legal-title {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}
.legal-page .legal-updated {
    margin: 0 0 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}
.legal-page .legal-section {
    margin-bottom: 1.5rem;
}
.legal-page .legal-section:last-child { margin-bottom: 0; }
.legal-page .legal-section h2 {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
}
.legal-page .legal-section p,
.legal-page .legal-section ul {
    margin: 0 0 0.75rem;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text);
}
.legal-page .legal-section ul {
    padding-left: 1.5rem;
}
.legal-page .legal-section li { margin-bottom: 0.35rem; }

/* ========== Στατιστικά (Super Admin) ========== */
.statistics-page .statistics-section { margin-bottom: 1.5rem; }
.statistics-page .statistics-section:last-child { margin-bottom: 0; }
.statistics-page .statistics-subtitle { margin: 1.25rem 0 0.5rem; font-size: 1rem; font-weight: 600; color: var(--text); }
.statistics-page .statistics-table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
.statistics-page .statistics-table th,
.statistics-page .statistics-table td { padding: 0.5rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
.statistics-page .statistics-table th { font-weight: 600; color: var(--text); background: var(--bg); }
.statistics-page .stat-badge { display: inline-block; padding: 0.2rem 0.5rem; border-radius: 999px; font-size: 0.8125rem; font-weight: 500; }
.statistics-page .stat-badge-pass { background: #dcfce7; color: #166534; }
.statistics-page .stat-badge-fail { background: #fee2e2; color: #b91c1c; }
html[data-theme="dark"] .statistics-page .stat-badge-pass { background: rgba(22, 101, 52, 0.35); color: #86efac; }
html[data-theme="dark"] .statistics-page .stat-badge-fail { background: rgba(185, 28, 28, 0.35); color: #fca5a5; }
.statistics-filters-form { margin-bottom: 1.5rem; padding: 1rem; background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); }
.statistics-filters-row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 1rem; }
.statistics-page .statistics-filter-item { margin-bottom: 0; }
.statistics-page .statistics-filter-item label { display: block; font-size: 0.8125rem; font-weight: 500; color: var(--text-muted); margin-bottom: 0.25rem; }
.statistics-filter-select,
.statistics-filter-input { min-width: 140px; padding: 0.4rem 0.5rem; font-size: 0.9375rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); }
.statistics-filter-actions { display: flex; gap: 0.5rem; align-items: flex-end; }

/* ========== Dashboard (homepage) ========== */
.dashboard-page { padding-bottom: 0.5rem; }
.dashboard-welcome {
    margin-bottom: 1.5rem;
}
.dashboard-title {
    margin: 0 0 0.25rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}
.dashboard-subtitle {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
}
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
}
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}
.stat-icon-blue { background: var(--badge-bg); color: var(--badge-text); }
.stat-icon-green { background: #dcfce7; color: #166534; }
.stat-icon-orange { background: #ffedd5; color: #c2410c; }
.stat-icon-purple { background: #f3e8ff; color: #6b21a8; }
.stat-body {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}
.stat-value { font-size: 1.5rem; font-weight: 700; color: var(--text); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

.dashboard-section { margin-bottom: 2rem; }
.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}
.section-head h2 { margin: 0; font-size: 1.2rem; font-weight: 600; color: var(--text); }
.section-link {
    font-size: 0.9rem;
    color: var(--primary);
    text-decoration: none;
}
.section-link:hover { text-decoration: underline; }
.dashboard-empty { color: var(--text-muted); margin: 0; }

.course-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
.course-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: box-shadow .15s;
}
.course-card:hover {
    box-shadow: var(--shadow-md);
}
.course-card-tag {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    background: var(--badge-bg);
    color: var(--badge-text);
    margin-bottom: 0.75rem;
}
.course-card-visual {
    height: 100px;
    background: linear-gradient(135deg, var(--card-visual-from) 0%, var(--card-visual-to) 100%);
    border-radius: 8px;
    margin-bottom: 0.75rem;
}
.course-card-title {
    margin: 0 0 0.35rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}
.course-card-desc {
    margin: 0 0 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
    flex: 1;
}
.course-card-progress {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}
.course-card-progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width .3s;
}
.course-card-cta {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--primary);
}
.dashboard-footer {
    margin-top: 1.5rem;
    margin-bottom: 0;
    padding-top: 1rem;
    padding-bottom: 0;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.site-copyright {
    margin-top: 2rem;
    padding: 1.25rem 0 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}
.site-copyright a {
    color: var(--text-muted);
    text-decoration: none;
}
.site-copyright a:hover { color: var(--primary); }
.dashboard-footer a {
    color: var(--text-muted);
    text-decoration: none;
}
.dashboard-footer a:hover { color: var(--primary); }
.footer-links { display: flex; gap: 1rem; }

/* ========== Αρχείο Μαθημάτων (courses.php) ========== */
.courses-archive { padding-bottom: 2rem; width: 100%; box-sizing: border-box; }
.archive-header { margin-bottom: 1.25rem; }
.archive-title {
    margin: 0 0 0.25rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}
.archive-subtitle {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
}
.archive-actions { margin-bottom: 1rem; }
.archive-filters {
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}
.archive-filters-form {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 1rem;
    align-items: end;
}
.filter-group { display: flex; flex-direction: column; gap: 0.35rem; }
.filter-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-muted);
}
.filter-input,
.filter-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    min-width: 0;
}
.filter-select {
    appearance: none;
    background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235c6370' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 0.6rem center;
    padding-right: 2rem;
}
.archive-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.archive-card {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    position: relative;
}
.archive-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.archive-card-top-left {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}
.archive-card-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    background: var(--primary);
    color: var(--on-primary);
}
.archive-card-title {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.3;
}
.archive-card-title a {
    color: var(--text);
    text-decoration: none;
}
.archive-card-title a:hover {
    color: var(--primary);
    text-decoration: underline;
}
.archive-card-title-id {
    font-size: 0.8em;
    font-weight: 400;
    color: var(--text-muted);
}
.archive-card-desc {
    margin: 0 0 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.45;
    flex: 1;
}
.archive-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}
.archive-card-creator { margin: 0 0 0.5rem; font-size: 0.85rem; color: var(--text-muted); }
.archive-card-progress {
    margin-bottom: 1rem;
}
.archive-card-progress-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.25rem;
}
.archive-card-progress-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}
.archive-card-progress-pct {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.archive-card-progress-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    display: inline-block;
    width: 100%;
}
.archive-card-progress-fill {
    display: block;
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
}
.archive-card-actions {
    margin-bottom: 0.5rem;
}
.archive-card-view-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.65rem 1.25rem;
    background: var(--primary);
    color: var(--on-primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 999px;
    border: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    transition: background 0.15s, box-shadow 0.15s;
}
.archive-card-view-btn:hover {
    background: var(--primary-hover);
    color: var(--on-primary);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}
.archive-card-view-btn-arrow {
    font-size: 1.1rem;
    line-height: 1;
}
.archive-card-actions .btn-block { width: 100%; }
.btn-block { width: 100%; }
.archive-card-admin {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
}
.archive-card-admin-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.7rem;
    background: #f0f3f7;
    color: #3a414b;
    text-decoration: none;
    font-size: 0.65rem;
    font-weight: 500;
    border-radius: 999px;
    border: none;
    transition: background 0.15s, color 0.15s;
}
.archive-card-admin-btn:hover {
    background: #e2e6ec;
    color: var(--primary);
}
.archive-card-admin-icon {
    font-size: 0.7rem;
    line-height: 1;
    opacity: 0.9;
}
.archive-card-admin-btn .archive-card-admin-icon:first-child {
    font-style: normal;
}
.archive-card-admin-actions { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.archive-card-delete-form { display: inline; margin: 0; }
.archive-card-delete-btn { color: var(--danger, #b91c1c); cursor: pointer; }
.archive-card-delete-btn:hover { background: #fee2e2; color: #b91c1c; }
.course-delete-title { margin: 0 0 0.35rem; font-size: 1rem; }
.course-delete-desc { font-size: 0.9rem; color: var(--text-muted); margin: 0 0 0.75rem; }
.course-delete-card { margin-top: 1.5rem; }
.exam-delete-card { margin-top: 1.5rem; }
.archive-empty { color: var(--text-muted); margin: 1.5rem 0 0; }

@media (max-width: 1100px) {
    .archive-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .archive-filters-form { grid-template-columns: 1fr; }
    .archive-grid { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
    .dashboard-stats { grid-template-columns: repeat(2, 1fr); }
    .course-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .burger-btn { display: flex; }
    .sidebar-overlay {
        display: block;
        pointer-events: none;
    }
    body.mobile-menu-open .sidebar-overlay {
        pointer-events: auto;
        opacity: 1;
    }
    body.mobile-menu-open { overflow: hidden; }
    .sidebar {
        width: 280px;
        min-width: 280px;
        transform: translateX(-100%);
        transition: transform 0.25s ease-out;
        box-shadow: none;
    }
    body.mobile-menu-open .sidebar {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
    }
    .sidebar-link span:last-child,
    .sidebar-powered-text { display: inline; }
    .sidebar-logo-img { max-height: 48px; }
    .sidebar-powered-logo { max-height: 32px; }
    .sidebar-link { justify-content: flex-start; padding: 0.65rem 1.25rem; }
    .app-main { margin-left: 0; }
    .topbar { padding-left: 3.5rem; }
    .topbar-search { display: none; }
    .dashboard-stats { grid-template-columns: 1fr; }
    .course-cards { grid-template-columns: 1fr; }
}

/* Auth page */
.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    padding: 2rem 1rem 3rem;
}
.auth-card {
    width: 100%;
    max-width: 380px;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 2rem;
}
.auth-logo-dark { display: none; }
.auth-logo-light { display: block; }
html[data-theme="dark"] .auth-logo-light { display: none; }
html[data-theme="dark"] .auth-logo-dark { display: block; }
.auth-logo,
.auth-logo-light,
.auth-logo-dark {
    max-width: 100%;
    max-height: 72px;
    width: auto;
    height: auto;
    object-fit: contain;
    margin: 0 auto 1.5rem;
}
.auth-card h1 {
    margin: 0 0 0.25rem;
    font-size: 1.75rem;
    color: var(--text);
}
.auth-subtitle {
    margin: 0 0 1.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}
.auth-form label {
    display: block;
    margin-bottom: 1rem;
}
.auth-form label span {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 0.35rem;
}
.auth-form input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
}
.auth-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 70, 191, .15);
}
.auth-form .btn {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.7rem;
}

/* Apps slider (login / public) */
.apps-slider-section {
    width: 100%;
    max-width: 900px;
}
.apps-slider-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 1rem;
    text-align: center;
}
.apps-slider {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    padding: 0.5rem 0;
}
.apps-slider-inner {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
}
.app-card {
    flex: 0 0 280px;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: box-shadow .2s, transform .2s;
}
.app-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,.1);
}
html[data-theme="dark"] .app-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,.35);
}
.app-card-image-wrap {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--card-visual-from), var(--card-visual-to));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.app-card-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.app-card-tag {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--primary);
    text-transform: uppercase;
    padding: 0.75rem 1rem 0.25rem;
}
.app-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 1rem 0.25rem;
}
.app-card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0 1rem 1rem;
    line-height: 1.45;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, color .15s;
}
.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
}
.btn-primary:hover {
    background: var(--primary-hover);
}
.btn-ghost {
    background: transparent;
    color: var(--text-muted);
}
.btn-ghost:hover {
    background: var(--border);
    color: var(--text);
}
.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.85rem; }
.btn-danger {
    background: var(--danger);
    color: var(--on-primary);
}
.btn-danger:hover { filter: brightness(1.05); }
.btn-success {
    background: var(--success);
    color: var(--on-primary);
}
.btn-success:hover { filter: brightness(1.05); }

/* Messages */
.message {
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.message-error { background: var(--msg-error-bg); color: var(--danger); }
.message-success { background: var(--msg-success-bg); color: var(--success); }
.message-info { background: rgba(13, 70, 191, 0.08); color: var(--primary); }
html[data-theme="dark"] .message-info { background: rgba(74, 123, 200, 0.15); }

/* Page title */
.page-title {
    margin: 0 0 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Cards & tables */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.card-header h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}
.table-wrap {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 0.75rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
th {
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--text-muted);
}
tr:hover td { background: #fafbfc; }
html[data-theme="dark"] tr:hover td { background: var(--card-visual-from); }
table .actions { white-space: nowrap; }
table .actions a,
table .actions button {
    margin-right: 0.5rem;
    font-size: 0.85rem;
}

.course-title-link { color: var(--primary); font-weight: 500; text-decoration: none; }
.course-title-link:hover { text-decoration: underline; }

/* Forms */
.form-grid {
    display: grid;
    gap: 1rem;
    max-width: 560px;
}
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.35rem;
    color: var(--text);
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group .hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }
.form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 400;
}
.form-group-checkbox input[type="checkbox"] { margin-top: 0.25rem; flex-shrink: 0; }
.form-group-checkbox span { line-height: 1.4; }
.form-group-checkbox-inline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.form-group-checkbox-inline input[type="checkbox"] { margin-top: 0; }
.form-actions { margin-top: 1.25rem; display: flex; gap: 0.75rem; }

/* Role badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 6px;
}
.badge-super_admin { background: var(--badge-bg); color: var(--primary); }
.badge-educator { background: #dcfce7; color: #166534; }
.badge-trainee { background: #fef3c7; color: #92400e; }
.badge-published { background: #dcfce7; color: #166534; }
.badge-locked { background: #fecaca; color: #991b1b; }
.course-exam-due-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    margin-left: 0.35rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    background: var(--danger);
    border-radius: 50%;
    cursor: help;
    line-height: 1;
}
.course-exam-due-icon::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 50%;
    top: 100%;
    transform: translateX(-50%);
    margin-top: 0.35rem;
    padding: 0.4rem 0.6rem;
    width: max-content;
    max-width: 260px;
    font-size: 0.75rem;
    font-weight: 400;
    line-height: 1.3;
    color: #fff;
    background: #1f2937;
    border-radius: 6px;
    white-space: normal;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    pointer-events: none;
    z-index: 100;
}
.course-exam-due-icon:hover::after {
    opacity: 1;
    visibility: visible;
}
.content-link-disabled { color: var(--text-muted); }

/* Dashboard */
.dash-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}
.dash-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}
.dash-card h3 { margin: 0 0 0.25rem; font-size: 1.75rem; font-weight: 700; color: var(--primary); }
.dash-card p { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

/* Breadcrumb */
.breadcrumb { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--text); }

/* ========== Course open (μονοπάτι Course) ========== */
.course-open-page { width: 100%; max-width: none; }
.course-open-breadcrumb { margin-bottom: 1rem; }
.course-open-title {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}
.course-open-creator {
    margin: 0 0 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.course-code-line {
    margin: 0 0 1rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}
.course-code-label {
    font-weight: 500;
}
.course-code-value {
    font-variant-numeric: tabular-nums;
}
.course-code-inline {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
    margin-right: 0.5rem;
}
.course-edit-card .course-code-line { margin: 0 0 0.75rem; font-size: 0.8125rem; color: var(--text-muted); }
.my-courses-page .th-code { width: 4rem; text-align: center; }
.my-courses-page .course-code-cell { text-align: center; font-size: 0.8125rem; color: var(--text-muted); }
.course-open-desc {
    margin: 0 0 1.5rem;
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.5;
}
.course-sections { display: flex; flex-direction: column; gap: 0.75rem; }
.course-section {
    background: #f8f9fa;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.course-section-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    cursor: pointer;
    list-style: none;
    font-weight: 600;
    color: var(--text);
}
.course-section-header::-webkit-details-marker { display: none; }
.course-section-num {
    font-size: 1rem;
    color: var(--text-muted);
    min-width: 2ch;
}
.course-section-title { flex: 1; }
.course-section-quiz-link {
    margin-left: 0.5rem;
    padding: 0.2rem 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary, #2563eb);
    text-decoration: none;
    border: 1px solid var(--primary, #2563eb);
    border-radius: var(--radius, 6px);
    white-space: nowrap;
}
.course-section-quiz-link:hover {
    background: var(--primary, #2563eb);
    color: #fff;
}
.course-section-desc {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-muted);
}
.course-section-chevron {
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: transform .2s;
}
.course-section[open] .course-section-chevron { transform: rotate(180deg); }
.course-section-body { padding: 0 1.25rem 1rem; }

/* Κυκλικό progress μαθήματος: αριστερά-κάτω, πάνω από όρους χρήσης, δεξιά από sidebar */
.course-open-page,
.content-view-page {
    padding-bottom: 4rem;
}
.course-progress-circle-wrap {
    position: fixed;
    bottom: 4.5rem;
    left: 240px;
    z-index: 900;
    padding: 0.35rem;
}
.course-progress-circle {
    position: relative;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
}
.course-progress-circle-svg {
    width: 100%;
    height: 100%;
    display: block;
}
.course-progress-circle-bg {
    stroke: var(--bg, #e5e7eb);
}
.course-progress-circle-fill {
    stroke: var(--primary, #2563eb);
    transition: stroke-dasharray 0.35s ease;
}
.course-progress-circle-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text, #1a1a1a);
    pointer-events: none;
}
@media (max-width: 1023px) {
    .course-progress-circle-wrap {
        left: 0.75rem;
        bottom: 4.5rem;
    }
}

.course-section-sequential-hint {
    margin: 0 0 0.75rem;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    background: var(--bg-soft, #f5f7fa);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
}
.course-lesson--sequential-locked .course-lesson-title--disabled { opacity: 0.9; }
.course-lesson {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1rem;
    margin-top: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    position: relative;
}
.course-lesson-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-shrink: 0;
}
.course-lesson-title {
    flex: 1;
    font-weight: 600;
    color: var(--text);
    text-decoration: none;
}
.course-lesson-title:hover { color: var(--primary); }
.course-lesson-title--disabled {
    color: var(--text-muted);
    cursor: default;
}
.course-lesson--locked .course-lesson-title--disabled { opacity: .85; }
.course-lesson-lock {
    flex-shrink: 0;
    font-size: 1rem;
    opacity: .8;
}
.course-time-total {
    margin: 0 0 1rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, #e8f4fd 0%, #f0f7ff 100%);
    border: 1px solid rgba(0, 100, 180, 0.2);
    border-radius: var(--radius);
    font-size: 1rem;
    color: var(--text);
}
.course-time-total strong { color: var(--primary); }
.course-section-time {
    flex-shrink: 0;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    background: rgba(0, 100, 180, 0.08);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
}
.course-lesson-time {
    flex-shrink: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    background: #eee;
    border-radius: 6px;
}

/* course-open.php dark mode */
html[data-theme="dark"] .course-time-total {
    background: linear-gradient(135deg, var(--surface) 0%, var(--card-visual-from) 100%);
    border-color: var(--border);
    color: var(--text);
}
html[data-theme="dark"] .course-time-total strong { color: var(--primary); }
html[data-theme="dark"] .course-section {
    background: var(--surface);
    border-color: var(--border);
}
html[data-theme="dark"] .course-section-header {
    color: var(--text);
}
html[data-theme="dark"] .course-section-time {
    background: rgba(91, 142, 244, 0.25);
    color: var(--primary);
}
html[data-theme="dark"] .course-lesson-time {
    background: var(--border);
    color: var(--text-muted);
}

/* ========== Επεξεργασία Course (course-edit.php) ========== */
.course-edit-page { max-width: 800px; }
.course-edit-breadcrumb { margin-bottom: 0.75rem; }
.course-edit-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
.course-edit-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}
.course-edit-actions { display: flex; gap: 0.5rem; }
.course-edit-card { margin-bottom: 1.5rem; }
.course-edit-card .card-body { padding: 1.25rem; }
.course-edit-first-body {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    align-items: start;
}
.course-edit-form-col { min-width: 0; }
.course-edit-access-col {
    border-left: 1px solid var(--border);
    padding-left: 1.5rem;
}
.course-edit-access-title {
    margin: 0 0 0.25rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}
.course-edit-access-hint {
    margin: 0 0 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.course-access-inline-form .form-group { margin-bottom: 0.75rem; }
.course-edit-access-col .access-value-group,
.course-edit-access-col .access-value-group-new { display: none; }
.course-edit-access-col .access-value-group.access-value-visible,
.course-edit-access-col .access-value-group-new.access-value-visible { display: block !important; }
.course-access-inline-form .form-group label { margin-bottom: 0.25rem; }
.course-access-inline-form select,
.course-access-inline-form input[type="text"] {
    width: 100%;
    padding: 0.45rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
}
.course-access-inline-form .btn { margin-top: 0.25rem; }
.course-edit-access-list { margin-top: 1rem; }
.course-edit-access-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}
.course-edit-access-item:last-of-type { border-bottom: none; }
.course-edit-access-item-type {
    font-weight: 500;
    color: var(--text-muted);
    min-width: 5rem;
}
.course-edit-access-item-value { flex: 1; min-width: 0; }
.course-edit-access-remove { margin-left: auto; }
.course-edit-access-empty {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}
@media (max-width: 900px) {
    .course-edit-first-body {
        grid-template-columns: 1fr;
    }
    .course-edit-access-col {
        border-left: none;
        padding-left: 0;
        padding-top: 1.5rem;
        border-top: 1px solid var(--border);
    }
}
.course-edit-form .form-actions-extra { margin-top: 0.5rem; }
.card-header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.card-header-muted {
    font-weight: 400;
    font-size: 0.9em;
    color: var(--text-muted);
}
.course-section-add {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.course-section-input {
    width: 260px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
}
.btn-add { white-space: nowrap; }
.course-sections-table th {
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: .04em;
}
.link-material {
    color: var(--primary);
    text-decoration: none;
}
.link-material:hover { text-decoration: underline; }
.actions-cell {
    white-space: nowrap;
}
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 1rem;
    transition: background .15s, color .15s;
}
.btn-icon:hover {
    background: var(--border);
    color: var(--text);
}
.btn-icon-danger:hover {
    background: var(--msg-error-bg);
    color: var(--danger);
}

/* ========== Επεξεργασία Ενότητας (section-edit.php) ========== */
.section-edit-page { padding-bottom: 1.5rem; }
.section-edit-breadcrumb { margin-bottom: 0.75rem; }
.section-edit-breadcrumb a { color: var(--text-muted); }
.section-edit-breadcrumb a:hover { color: var(--primary); }
.section-edit-title {
    margin: 0 0 1.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}
.section-status-card { margin-bottom: 1.5rem; }
.section-status-card .card-body { padding: 1.25rem; }
.section-status-form {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.section-status-label {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text);
}
.section-status-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    min-width: 160px;
    background: var(--surface);
    color: var(--text);
}
.section-content-card { margin-bottom: 0; }
.section-content-card .card-header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.section-content-card .table-wrap { margin: 0; }
.section-content-table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
.section-content-table th,
.section-content-table td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }
.section-content-table th {
    background: var(--bg);
    font-weight: 600;
    color: var(--text);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
}
.section-content-table tbody tr:hover { background: var(--bg-soft, rgba(0,0,0,.02)); }
.section-content-actions {
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.section-content-actions a {
    font-size: 0.875rem;
    color: var(--primary);
    text-decoration: none;
}
.section-content-actions a:hover { text-decoration: underline; }
.section-content-actions a[href*="content-delete"] { color: var(--danger, #b91c1c); }
.section-edit-page .badge { font-size: 0.75rem; }

/* Content view */
.content-view .content-body { padding: 1.25rem; }

.content-edit-page {
    padding: 0 1.5rem 2rem;
    box-sizing: border-box;
}
.content-edit-page .content-edit-card {
    max-width: 100%;
    width: 100%;
}
.content-edit-page #content-form.form-grid {
    max-width: 100%;
}
.content-edit-page #group-text {
    min-width: 0;
}
.content-edit-page .tox-tinymce {
    max-width: 100% !important;
}
.content-edit-youtube-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.75rem;
    margin-bottom: 0.75rem;
}
.content-edit-youtube-label { font-size: 0.875rem; font-weight: 500; margin: 0; white-space: nowrap; }
.content-edit-youtube-input { max-width: 320px; }

.content-view-nav {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border);
    background: var(--bg-soft, #f5f7fa);
    border-radius: 0 0 var(--radius) var(--radius);
}
.content-view-nav-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.content-view-nav .content-nav-prev,
.content-view-nav .content-nav-next,
.content-view-nav .content-nav-back {
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.content-view-nav .content-nav-prev:hover,
.content-view-nav .content-nav-next:hover,
.content-view-nav .content-nav-back:hover {
    background: var(--bg);
    border-color: var(--primary);
    color: var(--primary);
}
.content-view-nav-placeholder { min-width: 6rem; }

/* Μπάρα ολοκλήρωσης περιεχομένου (μετά το content, ώστε ο χρήστης να τη βλέπει στο τέλος) */
.content-completion-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem 1.5rem;
    background: var(--bg-soft, #f5f7fa);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    flex-wrap: wrap;
}
.content-completion-badge {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 0.35rem 0.75rem;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.content-completion-badge.content-completion-done {
    color: var(--success, #0d7d4a);
    background: rgba(13, 125, 74, 0.12);
    border-color: rgba(13, 125, 74, 0.3);
}
.content-completion-form { display: inline; }
.content-completion-btn {
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    cursor: pointer;
    transition: filter 0.2s, box-shadow 0.2s;
}
.content-completion-btn:hover {
    filter: brightness(1.08);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.content-completion-undo {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.45rem 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.content-completion-undo:hover {
    background: var(--bg);
    border-color: var(--text-muted);
    color: var(--text);
}

/* content-view: dark mode – μπάρα ολοκλήρωσης και πλοήγηση */
html[data-theme="dark"] .content-view .content-completion-bar,
html[data-theme="dark"] .content-view .content-view-nav {
    background: var(--bg-soft);
    border-color: var(--border);
}
html[data-theme="dark"] .content-view .content-completion-bar {
    border-radius: var(--radius);
}
html[data-theme="dark"] .content-view .content-completion-btn {
    background: var(--primary);
    color: var(--on-primary);
    border-color: var(--primary);
}
html[data-theme="dark"] .content-view .content-completion-btn:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    box-shadow: 0 2px 12px rgba(111, 166, 255, 0.25);
}
html[data-theme="dark"] .content-view .content-completion-badge {
    background: var(--surface);
    color: var(--text-muted);
    border-color: var(--border);
}
html[data-theme="dark"] .content-view .content-completion-badge.content-completion-done {
    color: var(--success);
    background: rgba(34, 197, 94, 0.15);
    border-color: rgba(34, 197, 94, 0.35);
}
html[data-theme="dark"] .content-view .content-view-nav .content-nav-prev,
html[data-theme="dark"] .content-view .content-view-nav .content-nav-next,
html[data-theme="dark"] .content-view .content-view-nav .content-nav-back {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}
html[data-theme="dark"] .content-view .content-view-nav .content-nav-prev:hover,
html[data-theme="dark"] .content-view .content-view-nav .content-nav-next:hover,
html[data-theme="dark"] .content-view .content-view-nav .content-nav-back:hover {
    background: var(--border);
    border-color: var(--primary);
    color: var(--primary);
}

/* Overlay + loader όταν σημειώνεται ως ολοκληρωμένο */
.content-complete-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.content-complete-overlay.content-complete-overlay--visible {
    opacity: 1;
    visibility: visible;
}
.content-complete-overlay-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 2.5rem 3rem;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    max-width: 90%;
}
.content-complete-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: content-complete-spin 0.9s linear infinite;
}
@keyframes content-complete-spin {
    to { transform: rotate(360deg); }
}
.content-complete-message {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
    text-align: center;
}
.quiz-failed-overlay,
.quiz-success-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    padding: 1.5rem;
    box-sizing: border-box;
}
.quiz-failed-modal-inner,
.quiz-success-modal-inner {
    background: var(--surface, #fff);
    border-radius: var(--radius, 8px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    padding: 2rem 2.5rem;
    max-width: 420px;
    margin: auto;
}
.quiz-success-title { margin: 0 0 0.75rem; font-size: 1.35rem; color: var(--success, #0d6832); }
.quiz-success-message { margin: 0; font-size: 1rem; line-height: 1.5; color: var(--text-muted, #555); }
.quiz-success-countdown { margin-top: 1rem; font-size: 0.9rem; color: var(--text-muted, #555); }
.quiz-failed-title {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    color: var(--text, #1a1a1a);
}
.quiz-failed-message {
    margin: 0 0 1.5rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-muted, #555);
}
.quiz-failed-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin-top: 0.5rem;
}
.quiz-failed-actions .btn {
    min-width: 10rem;
    padding: 0.6rem 1.25rem;
    font-weight: 500;
    border-radius: var(--radius);
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.quiz-failed-actions .btn:hover {
    transform: translateY(-1px);
}
.quiz-failed-actions .btn:active {
    transform: translateY(0);
}

.content-text { white-space: pre-wrap; }
.content-text.content-text-html {
    white-space: normal;
    line-height: 1.6;
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
    max-width: 100%;
    min-width: 0;
}
.content-view .content-body {
    overflow-wrap: break-word;
    min-width: 0;
}
.content-text-html h2 { font-size: 1.35rem; margin: 1.25em 0 0.5em; }
.content-text-html h3 { font-size: 1.15rem; margin: 1em 0 0.4em; }
.content-text-html h4 { font-size: 1.05rem; margin: 0.85em 0 0.35em; }
.content-text-html p { margin: 0.5em 0; }
.content-text-html ul, .content-text-html ol { margin: 0.5em 0; padding-left: 1.5rem; }
.content-text-html a { color: var(--primary); text-decoration: underline; }
.content-text-html a:hover { text-decoration: none; }
.content-text-html img { max-width: 100%; height: auto; border-radius: 8px; }
.content-text-html iframe { max-width: 100%; height: auto; min-height: 720px; border: none; border-radius: 8px; display: block; margin: 0.75em 0; }
.content-text-html table { border-collapse: collapse; width: 100%; margin: 0.75em 0; }
.content-text-html th, .content-text-html td { border: 1px solid var(--border); padding: 0.5rem 0.75rem; text-align: left; }
.content-text-html blockquote { margin: 0.75em 0; padding-left: 1rem; border-left: 4px solid var(--primary); color: var(--text-muted); }
.content-embed iframe { max-width: 100%; border-radius: 8px; }

/* Settings: Ειδικότητες & Τμήματα */
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 1rem; }
@media (max-width: 768px) { .settings-grid { grid-template-columns: 1fr; } }
.settings-grid .card .card-header { text-align: center; }
.settings-grid .card .card-body { padding: 1.5rem 2rem; text-align: center; }
.settings-grid .form-inline-add { display: flex; gap: 0.5rem; margin-bottom: 1.25rem; flex-wrap: wrap; justify-content: center; }
.settings-grid .form-inline-add input[type="text"] { flex: 0 1 auto; min-width: 0; max-width: 220px; width: 100%; padding: 0.5rem 0.6rem; border: 1px solid var(--border); border-radius: 8px; box-sizing: border-box; }
.settings-grid .lookup-list { list-style: none; margin: 0 auto; padding: 0; max-width: 320px; text-align: left; }
.settings-grid .lookup-item { display: flex; align-items: center; justify-content: space-between; padding: 0.5rem 0; border-bottom: 1px solid var(--border); gap: 0.75rem; }
.settings-grid .lookup-item:last-child { border-bottom: none; }
.settings-grid .lookup-remove { margin-left: auto; flex-shrink: 0; }
.settings-grid .lookup-empty { color: var(--text-muted); font-size: 0.9rem; padding: 0.5rem 0; text-align: center; }
.form-inline-add { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.form-inline-add input[type="text"] { flex: 1 1 0; min-width: 0; max-width: 220px; padding: 0.5rem 0.6rem; border: 1px solid var(--border); border-radius: 8px; box-sizing: border-box; }
.lookup-list { list-style: none; margin: 0; padding: 0; }
.lookup-item { display: flex; align-items: center; justify-content: space-between; padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.lookup-item:last-child { border-bottom: none; }
.lookup-remove { margin-left: auto; }
.lookup-empty { color: var(--text-muted); font-size: 0.9rem; padding: 0.5rem 0; }

/* Διαμόρφωση Δομής (specialties-departments.php) – screenshot layout */
.structure-config-page { max-width: none; width: 100%; }
.structure-config-title { margin: 0 0 0.25rem; font-size: 1.75rem; font-weight: 700; color: var(--text); }
.structure-config-subtitle { margin: 0 0 1.5rem; font-size: 1rem; color: var(--text-muted); }
.structure-config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}
@media (max-width: 768px) { .structure-config-grid { grid-template-columns: 1fr; } }
.structure-config-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}
.structure-config-card-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}
.structure-config-card-header h2 { margin: 0; font-size: 1.15rem; font-weight: 700; color: var(--text); }
.structure-config-icon {
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(13, 70, 191, 0.08);
    flex-shrink: 0;
}
.structure-config-icon-img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}
.structure-config-icon-img-dark { display: none; }
.structure-config-icon-img-light { display: block; }
html[data-theme="dark"] .structure-config-icon .structure-config-icon-img-light { display: none; }
html[data-theme="dark"] .structure-config-icon .structure-config-icon-img-dark { display: block; }
.structure-config-card-body { padding: 1.25rem 1.5rem; }
.structure-config-add-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}
.structure-config-input {
    flex: 1;
    min-width: 0;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg);
    color: var(--text);
}
.structure-config-input::placeholder { color: var(--text-muted); }
.structure-config-add-btn { flex-shrink: 0; }
.structure-config-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.structure-config-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
}
.structure-config-item-name { font-weight: 500; color: var(--text); }
.structure-config-remove-form { margin-left: auto; flex-shrink: 0; }
.structure-config-remove-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.5rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
}
.structure-config-remove-btn:hover { color: var(--danger); background: var(--msg-error-bg); }
.structure-config-remove-icon { font-size: 1rem; }
.structure-config-empty {
    padding: 1rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    background: var(--bg);
    border: 1px dashed var(--border);
    border-radius: 8px;
}

/* ========== Security blocks (αποκλεισμοί ασφαλείας) ========== */
.security-blocks-page .breadcrumb { margin-bottom: 0.75rem; }
.security-blocks-page .page-title { margin-bottom: 0.5rem; }
.security-blocks-hint {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}
.security-blocks-card {
    margin-bottom: 1.5rem;
}
.security-blocks-card:last-child { margin-bottom: 0; }
.security-blocks-page .card .card-body {
    padding: 1.25rem 1.5rem;
    min-height: 4rem;
}
.security-blocks-empty {
    padding: 1.5rem 1.25rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9375rem;
    background: var(--bg);
    border: 1px dashed var(--border);
    border-radius: 8px;
    min-height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========== Two-factor (2FA) page / tab ========== */
.two-factor-page .breadcrumb,
.users-page-tabs .two-factor-tab-panel .breadcrumb { margin-bottom: 0.75rem; }
.two-factor-page .page-title,
.users-page-tabs .two-factor-tab-panel .page-title { margin-bottom: 0.5rem; }

.two-factor-hint {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
    max-width: 36rem;
}
.two-factor-tab-panel .two-factor-hint { margin-bottom: 1.25rem; }

.two-factor-message {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
}
.two-factor-message.message-success {
    background: rgba(34, 197, 94, 0.12);
    border: 1px solid rgba(34, 197, 94, 0.35);
}
.two-factor-message.message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.two-factor-card {
    max-width: 440px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}
.two-factor-page .card .card-body,
.two-factor-tab-panel .two-factor-card .card-body {
    padding: 1.5rem 1.75rem;
    min-height: 4rem;
}

.two-factor-status-text {
    margin: 0 0 1.25rem;
    line-height: 1.6;
    color: var(--text);
    font-size: 0.9375rem;
}

.two-factor-form .form-group {
    margin-bottom: 1.25rem;
}
.two-factor-form .form-group:last-of-type { margin-bottom: 0; }
.two-factor-form .form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
}

.two-factor-code-input {
    max-width: 12rem;
    width: 100%;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.2em;
    text-align: center;
    font-size: 1.25rem;
    padding: 0.6rem 0.75rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.two-factor-code-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 70, 191, 0.2);
}
.two-factor-code-input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.two-factor-form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding-top: 0.25rem;
}

.two-factor-qr-wrap {
    margin: 1.25rem 0;
    padding: 1.25rem;
    background: var(--bg);
    border-radius: var(--radius);
    display: inline-block;
    border: 1px solid var(--border);
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.04);
}
.two-factor-qr-wrap img {
    display: block;
    border-radius: 6px;
}

.two-factor-secret-fallback {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 1rem 0 1.25rem;
    line-height: 1.5;
    word-break: break-all;
}
.two-factor-secret-fallback code {
    font-size: 0.8rem;
    padding: 0.35rem 0.5rem;
    background: var(--bg);
    border-radius: 6px;
    border: 1px solid var(--border);
    font-family: ui-monospace, monospace;
}

/* ========== Setup 2FA required (mandatory first-time setup) ========== */
.setup-2fa-required-page {
    padding: 1.5rem 1.25rem 2rem;
}
.setup-2fa-required-inner {
    max-width: 540px;
}
.setup-2fa-required-breadcrumb {
    margin-bottom: 0.5rem;
}
.setup-2fa-required-inner .page-title {
    margin-bottom: 0.5rem;
    font-size: 1.35rem;
}
.setup-2fa-required-intro {
    color: var(--text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    max-width: 36rem;
}
.setup-2fa-required-message {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
}
.setup-2fa-required-message.message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}
.setup-2fa-required-page .setup-2fa-required-card {
    max-width: 100%;
    box-shadow: var(--shadow);
}
.setup-2fa-required-page .setup-2fa-required-card .card-body {
    padding: 1.5rem 1.75rem;
    min-height: 4rem;
}
.setup-2fa-required-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}
.setup-2fa-required-logout {
    margin: 0;
    font-size: 0.9rem;
}
.setup-2fa-required-logout a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}
.setup-2fa-required-logout a:hover {
    text-decoration: underline;
}
.setup-2fa-required-logout-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-left: 0.25rem;
}

/* ========== User create page ========== */
.user-create-card {
    max-width: 720px;
    box-shadow: var(--shadow);
}
.user-create-page .user-create-card .card-body {
    padding: 1.5rem 1.75rem;
}
.user-create-form.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 1.5rem;
    max-width: none;
}
.user-create-form .form-group-span-2 { grid-column: 1 / -1; }
.user-create-form .form-group-2fa-inline .form-group-checkbox { margin: 0; }
.user-create-form-actions {
    grid-column: 1 / -1;
    margin-top: 1rem;
    padding-top: 0.5rem;
    flex-wrap: wrap;
}
@media (max-width: 640px) {
    .user-create-form.form-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== User edit page ========== */
.user-edit-page .breadcrumb {
    margin-bottom: 0.5rem;
}
.user-edit-page .page-title {
    margin-bottom: 1rem;
}
.user-edit-message {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
}
.user-edit-message.message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}
.user-edit-card {
    max-width: 820px;
    box-shadow: var(--shadow);
}
.user-edit-page .user-edit-card .card-body {
    padding: 1.5rem 1.75rem;
}
/* Δύο στήλες στη φόρμα – λιγότερο scroll (minmax(0,1fr) ώστε το grid να μην «σπρώχνει») */
.user-edit-form.form-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1rem 1.5rem;
    max-width: none;
}
.user-edit-form .form-group-span-2 { grid-column: 1 / -1; }
/* 2FA: γραμμή πλήρους πλάτους – checkbox + κείμενο δίπλα, όλο το κείμενο ορατό */
.user-edit-form .form-group-2fa {
    min-width: 0;
    width: 100%;
}
.user-edit-form .form-group-2fa .form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    width: 100%;
    min-width: 0;
}
.user-edit-form .form-group-2fa .form-group-checkbox input[type="checkbox"] {
    margin-top: 0.2rem;
    flex-shrink: 0;
    width: 1.1rem;
    height: 1.1rem;
}
.user-edit-form .form-group-2fa .form-group-checkbox span {
    flex: 1 1 0%;
    min-width: 0;
    text-align: left;
    line-height: 1.45;
    word-wrap: break-word;
}
.user-edit-form .form-group label {
    font-weight: 500;
    margin-bottom: 0.35rem;
}
.user-edit-form .form-group input:disabled {
    background: var(--bg);
    color: var(--text-muted);
    cursor: not-allowed;
}
.user-edit-form-actions {
    grid-column: 1 / -1;
    margin-top: 1rem;
    padding-top: 0.5rem;
    flex-wrap: wrap;
}

/* Ρυθμίσεις (settings.php) – φόρμα SMTP */
/* Κάρτα Ρυθμίσεων – ίδιο padding με user-edit, two-factor κ.λπ. */
.app-settings-page .card .card-body {
    padding: 1.5rem 1.75rem;
}
.settings-form.form-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1rem 1.5rem;
    max-width: 720px;
}
.settings-form .form-group-span-2 { grid-column: 1 / -1; }
/* Checkbox + κείμενο στην ίδια γραμμή (όπως στο user-edit) */
.settings-form .form-group-2fa {
    min-width: 0;
    width: 100%;
}
.settings-form .form-group-2fa .form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    width: 100%;
    min-width: 0;
}
.settings-form .form-group-2fa .form-group-checkbox input[type="checkbox"] {
    margin-top: 0.2rem;
    flex-shrink: 0;
    width: 1.1rem;
    height: 1.1rem;
}
.settings-form .form-group-2fa .form-group-checkbox span {
    flex: 1 1 0%;
    min-width: 0;
    text-align: left;
    line-height: 1.45;
    word-wrap: break-word;
}
.settings-form .form-actions {
    grid-column: 1 / -1;
    margin-top: 1rem;
    padding-top: 0.5rem;
    display: flex;
    gap: 0.75rem;
}
@media (max-width: 640px) {
    .settings-form.form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .user-edit-form.form-grid {
        grid-template-columns: 1fr;
    }
}

/* Utilities */
.form-inline { display: inline; }
.mt-1 { margin-top: 0.5rem; }
.mb-1 { margin-bottom: 0.5rem; }

/* ========== Exams ========== */
.course-open-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}
.course-open-header-left { flex: 1; min-width: 0; }
.course-open-header-right { flex-shrink: 0; }
.btn-exam {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.25rem;
    background: var(--success);
    color: var(--on-primary);
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    box-shadow: var(--shadow);
}
.btn-exam:hover {
    background: #15803d;
    color: var(--on-primary);
}
.btn-exam-renewal {
    background: #b45309;
    color: #fff;
}
.btn-exam-renewal:hover {
    background: #92400e;
    color: #fff;
}
.exam-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0.25rem 0 0;
}

/* ========== Exam Tests list (exams.php) ========== */
.exams-page .page-header-flex { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-bottom: 0.25rem; }
.exams-page .page-title { margin-bottom: 0.5rem; }
.exams-page .hint { color: var(--text-muted); font-size: 0.9375rem; margin: 0 0 1.5rem; line-height: 1.45; }

/* Κενή κατάσταση */
.exams-empty {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2.5rem 2rem;
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
}
.exams-empty-icon { color: var(--text-muted); opacity: 0.55; margin-bottom: 1rem; }
.exams-empty-icon svg { display: block; margin: 0 auto; }
.exams-empty-title { margin: 0 0 0.5rem; font-size: 1.1rem; font-weight: 600; color: var(--text); }
.exams-empty-text { margin: 0; font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; }

/* Πίνακας exam tests */
.exams-list-card { overflow: hidden; }
.exams-list-card .table-wrap { border-radius: 0 0 var(--radius) var(--radius); }
.exams-table { width: 100%; border-collapse: collapse; }
.exams-table th,
.exams-table td { padding: 0.875rem 1.25rem; border-bottom: 1px solid var(--border); }
.exams-table thead th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    background: var(--bg);
    text-align: center;
}
.exams-table thead th:first-child,
.exams-table thead th:nth-child(2) { text-align: left; }
.exams-table tbody tr { transition: background 0.15s; }
.exams-table tbody tr:hover { background: rgba(13, 70, 191, 0.03); }
html[data-theme="dark"] .exams-table tbody tr:hover { background: rgba(74, 123, 200, 0.08); }
.exams-table td { text-align: left; font-size: 0.9375rem; }
.exams-table-cell-link {
    color: var(--primary);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
}
.exams-table-cell-link:hover { text-decoration: underline; }
.exams-table .exam-deadline { font-size: 0.9rem; }
.exams-table .exam-deadline-expired { color: var(--text-muted); }
.exams-table .exam-btn-expired { cursor: default; color: var(--text-muted); pointer-events: none; }
.exams-table .text-muted { color: var(--text-muted); font-size: 0.9rem; }
.exams-table-actions {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.5rem;
    min-width: 11rem;
}
.exams-table-td-actions { white-space: nowrap; }
.exams-table-delete-form { display: inline-flex; margin: 0; flex-shrink: 0; }
.exams-table-actions .btn-danger { color: #fff; }
.exams-table-actions .btn-sm { white-space: nowrap; }
.exams-table-td-center { text-align: center; }
.exams-table-td-center .btn { text-align: center; }
.exams-table .btn-success.btn-sm { font-weight: 500; }
.exams-table .btn-primary.btn-sm { font-weight: 500; }

/* ========== Πιστοποιητικά (certifications.php) ========== */
.certifications-list-page .page-title { margin-bottom: 0.25rem; }
.certifications-subtitle {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin: 0 0 1.5rem;
    line-height: 1.45;
}

/* Κενή κατάσταση */
.certifications-empty {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 3rem 2rem;
    text-align: center;
    max-width: 480px;
    margin: 0 auto;
}
.certifications-empty-icon {
    color: var(--text-muted);
    opacity: 0.6;
    margin-bottom: 1.25rem;
}
.certifications-empty-icon svg { display: block; margin: 0 auto; }
.certifications-empty-title {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
}
.certifications-empty-text {
    margin: 0 0 1.25rem;
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Λίστα πιστοποιητικών – όλα τα items ίδιο styling */
.certifications-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 100%;
}
.certifications-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.25rem;
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.cert-item-main { flex: 1 1 0; min-width: 0; }
.cert-item-code {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--primary);
    margin-bottom: 0.25rem;
}
.cert-item-title {
    margin: 0 0 0.35rem;
    font-size: 1.1rem;
    font-weight: 600;
}
.cert-item-title-link {
    color: var(--text);
    text-decoration: none;
    font-weight: inherit;
}
.cert-item-title-link:hover {
    color: var(--primary);
    text-decoration: underline;
}
.cert-item-meta,
.cert-item-dates {
    margin: 0.2rem 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.4;
}
.cert-item-actions {
    flex-shrink: 0;
}
.cert-item-actions .btn-primary {
    white-space: nowrap;
    font-weight: 500;
}

/* ========== Προβολή πιστοποιητικού (certification.php) ========== */
.certificate-page {
    width: 100%;
    max-width: none;
    padding: 1rem 1.5rem;
    box-sizing: border-box;
}
.certificate-page .certificate-inner {
    width: 100%;
    max-width: none;
}
.certificate-page .breadcrumb {
    text-align: left;
}
.certificate-error-card {
    max-width: 480px;
    margin: 2rem auto;
    padding: 1.5rem;
}
.certificate-error-card .message { margin-bottom: 1rem; }
.certificate-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 0 0.25rem;
}
.certificate-header-title { font-size: 1.125rem; font-weight: 700; color: var(--text); margin: 0; }
.certificate-header-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.certificate-header-actions .btn { display: inline-flex; align-items: center; gap: 0.35rem; }

.certificate-paper {
    background: #fff;
    border-left: 8px solid #4a90d9;
    border-right: 8px solid #4a90d9;
    border-radius: 4px;
    padding: 2.5rem 3rem 2rem;
    box-shadow: 0 2px 16px rgba(0,0,0,0.06);
    position: relative;
    overflow: hidden;
}
.certificate-watermark {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) rotate(-35deg);
    font-size: 4rem;
    font-weight: 800;
    color: rgba(74, 144, 217, 0.08);
    letter-spacing: 0.2em;
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
}
.certificate-paper .cert-logo { max-height: 52px; margin: 0 auto 0.5rem; display: block; }
.certificate-paper .cert-badge { font-size: 0.7rem; letter-spacing: 0.2em; color: #4a90d9; text-align: center; margin-bottom: 0.25rem; }
.certificate-paper .cert-main-title { font-size: 1.5rem; font-weight: 700; color: #2c3e50; text-align: center; margin: 0 0 1.5rem; line-height: 1.3; }
.certificate-paper .cert-body { text-align: center; color: #444; font-size: 0.95rem; line-height: 1.7; margin-bottom: 1.25rem; }
.certificate-paper .cert-body .intro { margin: 0 0 0.25rem; }
.certificate-paper .cert-recipient { font-size: 1.75rem; font-weight: 700; color: #2c3e50; margin: 0.4rem 0 0.6rem; letter-spacing: 0.02em; }
.certificate-paper .cert-body .outro { margin: 0.25rem 0 0; }
.certificate-paper .cert-course-name { font-weight: 700; color: #2c3e50; font-size: 1.05rem; margin: 0.25rem 0 0; }
.certificate-details {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}
.certificate-detail { text-align: center; }
.certificate-detail-label { font-size: 0.65rem; letter-spacing: 0.12em; color: #666; margin-bottom: 0.35rem; }
.certificate-detail-value { font-weight: 700; font-size: 0.95rem; color: #2c3e50; }
.certificate-detail-value.score-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: #e8eef5;
    color: #1e3a5f;
    font-size: 1.1rem;
}
.certificate-signatures {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e0e6ed;
}
.certificate-signature { flex: 1; text-align: center; font-size: 0.8rem; color: #555; }
.certificate-signature .sig-name { font-weight: 700; color: #2c3e50; margin-top: 0.25rem; }
.certificate-signature .sig-role { font-size: 0.7rem; color: #666; margin-top: 0.15rem; }
.certificate-qr-block { flex: 0 0 auto; text-align: center; }
.certificate-qr-block img { width: 100px; height: 100px; display: block; margin: 0 auto 0.35rem; }
.certificate-qr-block .qr-caption { font-size: 0.7rem; color: #666; }
.certificate-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #e0e6ed;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: #666;
}
.certificate-footer a { color: #1e3a5f; }

/* ========== Σελίδα 404 (404.php) ========== */
.page-404 {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: 2rem 1.5rem;
}
.page-404-inner {
    text-align: center;
    max-width: 420px;
}
.page-404-icon {
    color: var(--text-muted);
    opacity: 0.5;
    margin-bottom: 1rem;
}
.page-404-icon svg { display: block; margin: 0 auto; }
.page-404-title {
    margin: 0 0 0.25rem;
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.02em;
    line-height: 1;
}
.page-404-heading {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}
.page-404-text {
    margin: 0 0 1.5rem;
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.5;
}
.page-404-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

@media print {
    body { background: #fff !important; }
    .sidebar, .burger-btn, .sidebar-overlay, .topbar, .site-copyright, .main-header, .breadcrumb, .certificate-header, .no-print, .theme-toggle-fixed, .theme-toggle { display: none !important; }
    .app-layout, .app-main, .app-content { margin: 0 !important; padding: 0 !important; background: #fff !important; }
    .app-content main { margin: 0 !important; padding: 0 !important; max-width: none !important; }
    .certificate-page { max-width: none; margin: 0; padding: 0; }
    .certificate-inner { max-width: none; }
    .certificate-paper { box-shadow: none; }
}

/* ========== Ημερολόγιο προθεσμιών (calendar.php) ========== */
.calendar-page { max-width: 900px; }
.calendar-intro { color: var(--text-muted); margin-bottom: 1.5rem; }
.calendar-empty { padding: 2rem; text-align: center; }
.calendar-empty .btn { margin-top: 1rem; }
.calendar-section { margin-bottom: 2rem; }
.calendar-section-title { font-size: 1.125rem; margin: 0 0 1rem; color: var(--text); }
.calendar-deadline-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.75rem; }
.calendar-deadline-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    flex-wrap: wrap;
}
.calendar-deadline-soon { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 8%, transparent); }
.calendar-deadline-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 4rem;
    padding: 0.5rem;
    background: var(--bg);
    border-radius: var(--radius);
    font-size: 0.875rem;
}
.calendar-deadline-day { font-weight: 700; font-size: 1.25rem; line-height: 1.2; color: var(--text); }
.calendar-deadline-month { color: var(--text-muted); font-size: 0.75rem; }
.calendar-deadline-time { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.15rem; }
.calendar-deadline-body { display: flex; flex-direction: column; gap: 0.15rem; flex: 1; min-width: 0; }
.calendar-deadline-exam { color: var(--text); }
.calendar-deadline-course { font-size: 0.875rem; color: var(--text-muted); }
.calendar-month-section { margin-top: 2rem; }
.calendar-month-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.calendar-month-label { font-weight: 600; color: var(--text); min-width: 10rem; text-align: center; }
.calendar-grid { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; }
.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
}
.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}
.calendar-day {
    min-height: 4rem;
    padding: 0.35rem;
    background: var(--bg);
    border-radius: 4px;
    font-size: 0.875rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.calendar-day-empty { background: transparent; min-height: 2rem; }
.calendar-day-num { font-weight: 600; color: var(--text); }
.calendar-day-today { outline: 2px solid var(--primary); outline-offset: -2px; }
.calendar-day-has-deadline { background: color-mix(in srgb, var(--primary) 12%, var(--bg)); }
.calendar-day-events { list-style: none; margin: 0.25rem 0 0; padding: 0; font-size: 0.7rem; width: 100%; }
.calendar-day-events a { color: var(--primary); text-decoration: none; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.calendar-day-events a:hover { text-decoration: underline; }

/* ========== Ανακοινώσεις (blog style) ========== */
.announcements-page {
    width: 100%;
    max-width: 800px;
    box-sizing: border-box;
}
.announcements-intro { color: var(--text-muted); margin-bottom: 1.5rem; }
.announcements-list { display: flex; flex-direction: column; gap: 1.25rem; }
.announcement-card {
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    border: 1px solid var(--border);
    background: var(--surface);
    position: relative;
}
.announcement-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
}
.announcement-card-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
    flex: 1;
    min-width: 0;
}
.announcement-card-title a {
    color: var(--text);
    text-decoration: none;
}
.announcement-card-title a:hover { color: var(--primary); text-decoration: underline; }
.announcement-badge-important {
    flex-shrink: 0;
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: #fff;
    background: #0ea5e9;
    border-radius: 999px;
}
.announcement-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}
.announcement-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.announcement-meta-icon { font-size: 1rem; opacity: 0.9; }
.announcement-card-excerpt {
    font-size: 0.9375rem;
    line-height: 1.55;
    color: var(--text);
    margin-bottom: 1rem;
}
.announcement-card-read {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
}
.announcement-card-read:hover { text-decoration: underline; }
.announcements-empty { padding: 2rem; text-align: center; }

/* ========== Ανακοίνωση μία (single post) – πλήρες styling σελίδας ========== */
.announcement-single-page {
    width: 100%;
    max-width: 720px;
    box-sizing: border-box;
    background: #f0f2f5;
    margin: -1.5rem -1.5rem 0;
    padding: 1.5rem 1.5rem 2.5rem;
}
[data-theme="dark"] .announcement-single-page { background: var(--bg); }

.announcement-single-breadcrumb {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}
.announcement-single-breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}
.announcement-single-breadcrumb a:hover { text-decoration: underline; }
.announcement-single-breadcrumb .breadcrumb-sep { color: var(--text-muted); margin: 0 0.3rem; }
.announcement-single-breadcrumb .breadcrumb-current { color: var(--text); font-weight: 600; }

.announcement-back-link {
    display: inline-block;
    margin-bottom: 1.25rem;
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
}
.announcement-back-link:hover { text-decoration: underline; }

.announcement-single {
    padding: 2rem 2.25rem;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    border: 1px solid var(--border);
    background: var(--surface);
}
.announcement-single-header { margin-bottom: 1.5rem; }

.announcement-single-top {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem 0.5rem;
    margin-bottom: 0.5rem;
}
.announcement-badge-important-single {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #b91c1c;
    background: #fecaca;
}
.announcement-top-sep {
    color: var(--text-muted);
    font-weight: 700;
    margin: 0 0.15rem;
}
.announcement-category {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.announcement-single-title {
    margin: 0 0 0.85rem;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.announcement-single-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0 0.85rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}
.announcement-meta-author {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}
.announcement-meta-author-text {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}
.announcement-single-author { font-weight: 500; color: var(--text); font-size: 0.9375rem; }
.announcement-author-role { font-size: 0.8rem; color: var(--text-muted); }
.announcement-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: #d4a574;
    color: #5c3317;
    font-size: 1rem;
    font-weight: 700;
    flex-shrink: 0;
}
.announcement-meta-sep {
    color: var(--text-muted);
    font-weight: 600;
}
.announcement-meta-date { color: var(--text-muted); }
.announcement-meta-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.announcement-action-icon {
    font-size: 1.1rem;
    opacity: 0.7;
    cursor: default;
}

.announcement-single-body {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text);
    margin-bottom: 1.75rem;
}

/* Πλούσιο περιεχόμενο σώματος – λίστες με checkmark, παράθεση μπλε */
.announcement-body-content ul,
.announcement-body-content ol { margin: 0.75rem 0; padding-left: 0; list-style: none; }
.announcement-body-content ul li {
    position: relative;
    padding-left: 1.75rem;
    margin: 0.5rem 0;
}
.announcement-body-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0.1rem;
    width: 1.15rem;
    height: 1.15rem;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    font-size: 0.65rem;
    font-weight: bold;
    line-height: 1.15rem;
    text-align: center;
}
.announcement-body-content ol { counter-reset: ann-ol; padding-left: 1.5rem; }
.announcement-body-content ol li { counter-increment: ann-ol; margin: 0.35rem 0; list-style-type: decimal; }
.announcement-body-content blockquote {
    margin: 1.25rem 0;
    padding: 1rem 1.25rem;
    border-left: 4px solid var(--primary);
    background: #eff6ff;
    color: #1e40af;
    font-style: italic;
    border-radius: 0 6px 6px 0;
}
.announcement-body-content h2 { font-size: 1.25rem; margin: 1rem 0 0.5rem; font-weight: 700; color: var(--text); }
.announcement-body-content h3 { font-size: 1.1rem; margin: 0.75rem 0 0.4rem; font-weight: 600; color: var(--text); }
.announcement-body-content h4 { font-size: 1rem; margin: 0.5rem 0 0.35rem; font-weight: 600; color: var(--text); }
.announcement-body-content p { margin: 0.6rem 0; }
.announcement-body-content .ql-size-small { font-size: 0.875em; }
.announcement-body-content .ql-size-large { font-size: 1.25em; }

.announcement-single-footer {
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
}
.announcement-single-footer-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}
.announcement-single-footer .btn-ghost {
    color: var(--primary);
    font-weight: 500;
}
.announcement-single-footer .btn-ghost:hover { text-decoration: underline; }
.announcement-single-footer .btn-danger {
    background: var(--danger);
    color: #fff;
    border: none;
}
.announcement-single-footer .btn-danger:hover {
    filter: brightness(1.1);
    color: #fff;
}
.announcement-delete-form { display: inline; }

/* Editor ανακοίνωσης (Quill) */
.announcement-editor-wrap { min-height: 200px; }
.announcement-editor-wrap .ql-editor { min-height: 200px; }
.form-hint { font-size: 0.875rem; color: var(--text-muted); margin-top: 0.25rem; margin-bottom: 0.5rem; }

/* Announcement edit page: full-width + checkbox alignment */
.announcement-edit-page {
    padding: 0 1.5rem 2rem;
    box-sizing: border-box;
}
.announcement-edit-page .announcement-edit-card {
    max-width: 100%;
    width: 100%;
}
.announcement-edit-page .form-group .checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 400;
    margin-bottom: 0;
}
.announcement-edit-page .form-group .checkbox-label input[type="checkbox"] {
    width: auto;
    min-width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
    margin: 0;
}
.announcement-edit-page .announcement-visibility-fieldset .checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.announcement-edit-page .announcement-visibility-fieldset .checkbox-label input[type="checkbox"] {
    width: auto;
    min-width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
    margin: 0;
}

.exam-question-block { margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.exam-question-block:last-of-type { border-bottom: none; }
.exam-answers-list { margin: 0.5rem 0 0.75rem; padding-left: 1.25rem; }
.correct-badge { color: var(--success); font-size: 0.9rem; }
.exam-add-hr { margin: 1.5rem 0 1rem; }
.exam-add-question-form .form-group { margin-bottom: 1rem; }

/* ========== Exam management (exam-edit.php) – Διαχείριση Εξετάσεων ========== */
.exam-management-page { max-width: 900px; }
.exam-management-page .exam-edit-breadcrumb { margin-bottom: 1rem; }
.exam-management-card { margin-bottom: 1.5rem; }
.exam-management-card .card-header { padding: 1rem 1.25rem; }
.exam-management-card .card-body { padding: 1.25rem; overflow: visible; }
.exam-add-question-card .card-body,
.exam-question-edit-page .card-body { overflow: visible; }
.exam-add-question-form,
.exam-answers-group { width: 100%; min-width: 0; overflow: visible; }

.exam-details-form .exam-details-grid {
    display: grid;
    grid-template-columns: 1fr auto auto auto auto;
    gap: 1rem 1.5rem;
    align-items: end;
    flex-wrap: wrap;
}
@media (max-width: 768px) {
    .exam-details-form .exam-details-grid { grid-template-columns: 1fr; }
}
.exam-details-form .form-group { margin-bottom: 0; }
.exam-details-form .exam-time-inputs {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}
.exam-details-form .exam-time-inputs input[type="number"] { width: 4rem; }
.exam-details-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.btn-icon-text { display: inline-flex; align-items: center; gap: 0.4rem; }
.btn-icon-text .btn-icon { font-size: 1rem; }

.exam-questions-list-title { margin: 0; font-size: 1.1rem; display: flex; align-items: center; gap: 0.5rem; }
.exam-list-icon { font-size: 1.25rem; }
.exam-no-questions { color: var(--text-muted); margin: 0; padding: 1rem 0; }
.exam-questions-list { list-style: none; margin: 0; padding: 0; }
.exam-question-row {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}
.exam-question-row:last-child { border-bottom: none; }
.exam-question-num {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--border);
    color: var(--text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 600;
}
.exam-question-content { flex: 1; min-width: 0; }
.exam-question-text { margin: 0 0 0.25rem; font-weight: 500; }
.exam-question-meta { margin: 0; font-size: 0.85rem; color: var(--text-muted); }
.exam-meta-difficulty {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.exam-difficulty-1 { background: rgba(34, 197, 94, 0.15); color: #15803d; }
.exam-difficulty-2 { background: rgba(234, 179, 8, 0.2); color: #a16207; }
.exam-difficulty-3 { background: rgba(239, 68, 68, 0.15); color: #b91c1c; }
.exam-question-bank-wrap .exam-question-bank-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
}
.exam-question-bank-wrap .exam-label-inline { margin: 0; font-weight: 500; }
.exam-question-actions {
    display: flex;
    gap: 0.25rem;
    flex-shrink: 0;
}
.exam-question-action-form { display: inline; margin: 0; }
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: none;
    border-radius: var(--radius);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.15s, color 0.15s;
}
.btn-icon:hover { background: var(--border); color: var(--text); }
.btn-icon-danger:hover { background: var(--msg-error-bg); color: var(--danger); }

.exam-add-question-title { margin: 0; font-size: 1.1rem; display: flex; align-items: center; gap: 0.5rem; }
.exam-add-icon { font-size: 1.25rem; }
.exam-answers-group { margin-top: 1rem; }
.exam-answers-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}
.exam-correct-hint { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); }
.exam-answer-rows { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 0.75rem; width: 100%; }
.exam-answer-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    min-width: 0;
}
.exam-answer-row .exam-correct-radio { margin: 0; justify-self: start; }
.exam-answer-row .exam-answer-input {
    min-width: 0;
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    background: var(--surface);
    color: var(--text);
    box-sizing: border-box;
}
.exam-answer-row .exam-answer-input::placeholder { color: var(--text-muted); }
.btn-remove-answer {
    width: 2rem;
    height: 2rem;
    justify-self: end;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-muted);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s;
}
.btn-remove-answer:hover { background: var(--danger); color: #fff; }

/* ========== Exam edit – EduPlatform-style (exam-edit-edu) ========== */
.exam-edit-edu .exam-edit-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}
.exam-edit-edu .exam-edit-breadcrumb a { color: var(--text-muted); transition: color 0.15s; }
.exam-edit-edu .exam-edit-breadcrumb a:hover { color: var(--primary); }
.exam-edit-edu .breadcrumb-current { color: var(--text); font-weight: 700; }
.exam-edit-edu .breadcrumb-sep { color: var(--text-muted); user-select: none; }

.exam-edit-edu .exam-edit-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
    margin-bottom: 2rem;
    overflow: hidden;
}
.exam-edit-edu .exam-edit-card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}
.exam-edit-edu .exam-edit-card-header h2 { margin: 0; font-size: 1.1rem; }
.exam-edit-edu .exam-edit-card-body { padding: 1.5rem; overflow: visible; }

.exam-edit-edu .exam-form-group { margin-bottom: 1rem; }
.exam-edit-edu .exam-form-group:last-of-type { margin-bottom: 0; }
.exam-edit-edu .exam-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.35rem;
}
.exam-edit-edu .exam-input {
    width: 100%;
    padding: 0.6rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: var(--bg);
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
}
.exam-edit-edu .exam-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(13, 70, 191, 0.2);
}
.exam-edit-edu .exam-input::placeholder { color: var(--text-muted); }
.exam-edit-edu .exam-select { cursor: pointer; appearance: auto; }
.exam-edit-edu .exam-textarea { min-height: 5rem; resize: vertical; }

.exam-edit-edu .exam-time-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.exam-edit-edu .exam-time-wrap {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex: 0 0 auto;
}
.exam-edit-edu .exam-input-time {
    width: 4rem;
    min-width: 4rem;
    padding: 0.6rem 0.75rem;
    box-sizing: border-box;
    text-align: center;
}
.exam-edit-edu .exam-time-suffix {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--text-muted);
    flex-shrink: 0;
}

.exam-edit-edu .exam-details-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem 0;
    align-items: end;
}
@media (min-width: 769px) {
    .exam-edit-edu .exam-details-grid {
        grid-template-columns: auto auto auto 1fr;
        gap: 1.25rem 1.5rem;
    }
}
.exam-edit-edu .exam-details-form .exam-form-deadline { margin-bottom: 0; }
@media (max-width: 768px) {
    .exam-edit-edu .exam-details-grid { grid-template-columns: 1fr; }
}
.exam-edit-edu .exam-details-form .exam-form-title { grid-column: 1 / -1; }
/* Τα πεδία ανανέωσης σε πλήρες πλάτος ώστε το κείμενο να μην σωριέται */
.exam-edit-edu .exam-details-form .exam-renewal-check-wrap,
.exam-edit-edu .exam-details-form .exam-renewal-months,
.exam-edit-edu .exam-details-form .exam-renewal-exam {
    grid-column: 1 / -1;
    min-width: 0;
}
.exam-edit-edu .exam-details-form .exam-form-group .exam-hint,
.exam-edit-edu .exam-details-form .exam-renewal-exam .exam-hint {
    max-width: 42em;
    line-height: 1.45;
}
.exam-edit-edu .exam-details-form .exam-time-group,
.exam-edit-edu .exam-details-form .exam-form-pass { margin-bottom: 0; }
.exam-edit-edu .exam-details-actions {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.exam-edit-edu .exam-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 700;
    border-radius: 1rem;
    border: none;
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s;
    text-decoration: none;
    box-sizing: border-box;
}
.exam-edit-edu .exam-btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    box-shadow: 0 4px 14px rgba(13, 70, 191, 0.25);
}
.exam-edit-edu .exam-btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 16px rgba(13, 70, 191, 0.35);
}
.exam-edit-edu .exam-btn-primary .exam-btn-ico { color: #fff; }
.exam-edit-edu .exam-btn-secondary {
    background: var(--border);
    color: var(--text);
}
.exam-edit-edu .exam-btn-secondary:hover { background: var(--card-visual-to); }
.exam-edit-edu .exam-btn-ico { font-size: 1.1rem; }
.exam-btn-ico-img-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.1rem;
    height: 1.1rem;
}
.exam-btn-ico-img {
    display: block;
    width: 18px;
    height: 18px;
    object-fit: contain;
}
.exam-btn-ico-img-dark { display: none; }
.exam-btn-ico-img-light { display: block; }
html[data-theme="dark"] .exam-btn-ico-img-light { display: none; }
html[data-theme="dark"] .exam-btn-ico-img-dark { display: block; }

.exam-edit-edu .exam-section-head { margin-bottom: 1rem; padding: 0 0.25rem; }
.exam-edit-edu .exam-section-title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.exam-edit-edu .exam-section-ico { color: var(--primary); font-size: 1.25rem; }
.exam-edit-edu .exam-section-ico.exam-btn-ico-img-wrap { display: inline-flex; width: 1.25rem; height: 1.25rem; }
.exam-edit-edu .exam-section-ico .exam-btn-ico-img { width: 20px; height: 20px; }

.exam-edit-edu .exam-questions-block { margin-bottom: 2.5rem; }
.exam-edit-edu .exam-questions-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.75rem; }
.exam-edit-edu .exam-no-questions { color: var(--text-muted); margin: 0; padding: 1.25rem 0; font-size: 0.9375rem; }

.exam-edit-edu .exam-question-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 0;
    list-style: none;
    transition: box-shadow 0.2s;
}
.exam-edit-edu .exam-question-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.exam-edit-edu .exam-question-card-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
}
.exam-edit-edu .exam-question-num {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    background: var(--bg);
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
}
.exam-edit-edu .exam-question-content { flex: 1; min-width: 0; }
.exam-edit-edu .exam-question-text { margin: 0 0 0.35rem; font-size: 0.9375rem; font-weight: 500; line-height: 1.4; }
.exam-edit-edu .exam-question-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}
.exam-edit-edu .exam-meta-answers { display: inline-flex; align-items: center; gap: 0.25rem; }
.exam-edit-edu .exam-meta-correct {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--success);
    font-weight: 700;
}
.exam-edit-edu .exam-meta-ico { font-size: 0.875rem; }

.exam-edit-edu .exam-question-actions { display: flex; gap: 0.25rem; flex-shrink: 0; }
.exam-edit-edu .exam-question-action-form { display: inline; margin: 0; }
.exam-edit-edu .exam-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: none;
    border-radius: 0.5rem;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    transition: background 0.15s, color 0.15s;
    text-decoration: none;
}
.exam-edit-edu .exam-action-edit:hover,
.exam-edit-edu .exam-action-copy:hover {
    background: rgba(13, 70, 191, 0.08);
    color: var(--primary);
}
.exam-edit-edu .exam-action-delete:hover {
    background: var(--msg-error-bg);
    color: var(--danger);
}

.exam-edit-edu .exam-add-card-dashed { border: 2px dashed var(--border); }
.exam-edit-edu .exam-add-card-header {
    background: var(--bg);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
}
.exam-edit-edu .exam-add-card-title {
    margin: 0;
    font-size: 0.9375rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text);
}
.exam-edit-edu .exam-add-ico { color: var(--primary); font-size: 1.25rem; }

.exam-edit-edu .exam-add-question-form .exam-form-group { margin-bottom: 1.5rem; }
.exam-edit-edu .exam-add-question-form .exam-answers-group { margin-top: 1rem; }
.exam-edit-edu .exam-correct-hint {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}
.exam-edit-edu .exam-answer-rows { gap: 0.75rem; margin-bottom: 1rem; }
.exam-edit-edu .exam-answer-row .exam-answer-input.exam-input:focus,
.exam-edit-edu .exam-answer-row .exam-correct-radio:checked + .exam-answer-input {
    border-color: var(--primary);
    background: rgba(13, 70, 191, 0.06);
}
.exam-edit-edu .exam-correct-radio { accent-color: var(--primary); }
.exam-edit-edu .exam-link-add {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary);
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 0.5rem;
    transition: background 0.15s;
}
.exam-edit-edu .exam-link-add:hover { background: rgba(13, 70, 191, 0.08); }
.exam-edit-edu .exam-add-form-actions {
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
}
.exam-edit-edu .exam-add-form-actions .exam-btn { padding: 0.75rem 1.75rem; }
.exam-edit-edu .btn-remove-answer {
    color: var(--text-muted);
    background: transparent;
    border-radius: 0.5rem;
}
.exam-edit-edu .btn-remove-answer:hover { color: var(--danger); background: var(--msg-error-bg); }

.exam-take-header { margin-bottom: 1rem; }
.exam-take-meta { color: var(--text-muted); margin-top: 0.25rem; }
.exam-progress-wrap { margin-bottom: 1.5rem; }
.exam-progress-label { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.35rem; }
.exam-progress-bar {
    height: 10px;
    background: var(--border);
    border-radius: 999px;
    overflow: hidden;
}
.exam-progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 999px;
    transition: width 0.25s ease;
}
.exam-take-form .exam-question-card {
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    background: var(--surface);
}
.exam-question-text { margin: 0 0 1rem; }
.exam-options { display: flex; flex-direction: column; gap: 0.5rem; }
.exam-option {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}
.exam-option:hover { background: var(--bg); }
.exam-option input.exam-radio { margin-top: 0.2rem; flex-shrink: 0; }
.exam-submit-wrap { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }

/* ========== Exam take – screenshot layout ========== */
.exam-take-screenshot .exam-take-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}
.exam-take-screenshot .exam-take-breadcrumb {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}
.exam-take-screenshot .exam-take-breadcrumb a { color: var(--text-muted); }
.exam-take-screenshot .exam-take-breadcrumb a:hover { color: var(--primary); }
.btn-submit-top {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}
.btn-submit-icon { font-size: 0.65em; opacity: 0.9; }

.exam-take-screenshot .exam-info-card {
    margin-bottom: 1.25rem;
    padding: 1.25rem 1.5rem;
    overflow: visible;
}
.exam-info-title {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text);
}
.exam-info-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
}
.exam-info-meta {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.exam-info-icon { font-size: 1rem; opacity: 0.8; }

.exam-countdown-fixed {
    position: fixed;
    top: 1rem;
    right: 1.5rem;
    z-index: 30;
}
.exam-countdown-fixed .exam-countdown-box {
    margin-left: 0;
    padding: 0.6rem 1rem;
    background: #FFEAEA;
    border: 1px solid rgba(220, 38, 38, 0.25);
    border-radius: var(--radius);
    text-align: center;
    transition: padding 0.2s ease, box-shadow 0.2s ease;
}
.exam-countdown-fixed.exam-countdown-compact .exam-countdown-box {
    padding: 0.35rem 0.65rem;
    box-shadow: var(--shadow-md);
}
.exam-countdown-fixed.exam-countdown-compact .exam-countdown-box-label {
    font-size: 0.55rem;
    margin-bottom: 0.1rem;
}
.exam-countdown-fixed.exam-countdown-compact .exam-countdown-box-time {
    font-size: 1.1rem;
}
.exam-countdown-fixed.exam-countdown-compact .exam-countdown-clock {
    font-size: 0.9rem;
}
html[data-theme="dark"] .exam-countdown-box {
    background: rgba(220, 38, 38, 0.15);
    border-color: rgba(220, 38, 38, 0.35);
}
.exam-countdown-box-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #b91c1c;
    margin-bottom: 0.2rem;
}
html[data-theme="dark"] .exam-countdown-box-label { color: #f87171; }
.exam-countdown-box-time {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: #dc2626;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
}
.exam-countdown-clock { font-size: 1.1rem; opacity: 0.95; }
html[data-theme="dark"] .exam-countdown-box-time { color: #f87171; }
.exam-countdown-box-time.exam-countdown-expired { color: #b91c1c; }

.exam-take-screenshot .exam-progress-wrap {
    margin-bottom: 1.25rem;
}
.exam-take-screenshot .exam-progress-label { display: inline-block; margin-bottom: 0.35rem; }

.exam-take-screenshot .exam-question-card {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.exam-question-label {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 0.3rem 0.6rem;
    background: #E8F0FE;
    color: var(--primary);
    border-radius: 6px;
    margin-bottom: 1rem;
}
html[data-theme="dark"] .exam-question-label {
    background: rgba(59, 130, 246, 0.2);
    color: #93b8f7;
}
.exam-take-screenshot .exam-question-text {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 1.25rem;
    line-height: 1.45;
}
.exam-take-screenshot .exam-option {
    padding: 0.75rem 1rem;
    border-radius: 10px;
    position: relative;
}
.exam-take-screenshot .exam-option .exam-option-check {
    margin-left: auto;
    width: 24px;
    height: 24px;
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: transparent;
    flex-shrink: 0;
}
.exam-take-screenshot .exam-option input.exam-radio:checked ~ .exam-option-check {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}
.exam-take-screenshot .exam-option input.exam-radio:checked ~ .exam-option-text {
    color: var(--primary);
    font-weight: 600;
}
.exam-take-screenshot .exam-option:has(input.exam-radio:checked) {
    background: #E8F0FE;
    border-color: var(--primary);
}
html[data-theme="dark"] .exam-take-screenshot .exam-option:has(input.exam-radio:checked) {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--primary);
}

.exam-take-screenshot .exam-nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 2px solid var(--border);
}
.exam-take-screenshot .exam-nav-wrap .btn-exam-prev {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.exam-take-screenshot .exam-nav-wrap .btn-exam-prev:hover:not(:disabled) {
    background: var(--bg);
    border-color: var(--border);
    color: var(--text);
}
.exam-pagination-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.exam-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: var(--border);
    cursor: pointer;
    padding: 0;
    transition: background 0.2s, transform 0.15s;
}
.exam-dot:hover { background: var(--text-muted); }
.exam-dot.active {
    background: var(--primary);
    transform: scale(1.15);
}
.exam-take-screenshot .exam-nav-wrap .btn-exam-next.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
}
.exam-take-screenshot .exam-nav-wrap .btn-exam-next.btn-primary:hover {
    background: var(--primary-hover);
    color: var(--on-primary);
}
.exam-take-screenshot .exam-nav-wrap .btn-exam-submit-bottom {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 10rem;
    justify-content: flex-end;
    background: var(--primary);
    color: var(--on-primary);
    border: none;
}
.exam-take-screenshot .exam-nav-wrap .btn-exam-submit-bottom:hover {
    background: var(--primary-hover);
    color: var(--on-primary);
}

.exam-start-screen { max-width: 560px; }
.exam-start-card { text-align: center; padding: 2rem; }
.exam-start-desc { color: var(--text-muted); margin: 1rem 0 1.5rem; }
.btn-exam-start { padding: 0.75rem 2rem; font-size: 1.1rem; }

.exam-countdown-wrap { margin-bottom: 1rem; }
.exam-countdown-label { font-size: 0.9rem; color: var(--text-muted); display: block; margin-bottom: 0.25rem; }
.exam-countdown {
    font-size: 1.75rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--primary);
}
.exam-countdown-expired { color: var(--danger); }

.exam-nav-wrap {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 2px solid var(--border);
}
.btn-exam-nav {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.25rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.1s;
}
.btn-exam-nav:hover:not(:disabled) {
    background: var(--bg);
    border-color: var(--primary);
    color: var(--primary);
}
.btn-exam-nav:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
.btn-exam-nav:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.btn-exam-prev .btn-exam-nav-icon { font-size: 1.2em; line-height: 1; }
.btn-exam-next .btn-exam-nav-icon { font-size: 1.2em; line-height: 1; }
.btn-exam-nav.btn-exam-prev { min-width: 10rem; justify-content: flex-start; }
.btn-exam-nav.btn-exam-next { min-width: 10rem; justify-content: flex-end; }
.exam-nav-wrap .btn-exam-submit {
    margin-left: auto;
    padding: 0.7rem 1.5rem;
    font-weight: 600;
}

.exam-time-fields .exam-time-inputs { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.35rem; }
.exam-time-fields .exam-time-inputs input[type="number"] { width: 5rem; padding: 0.5rem; border: 1px solid var(--border); border-radius: 8px; }
.form-hint { display: block; color: var(--text-muted); font-size: 0.85rem; margin-top: 0.25rem; }

.exam-result-card { max-width: 520px; margin: 0 auto; text-align: center; padding: 2rem; }
.exam-result-header { margin-bottom: 1.5rem; }
.exam-result-course { color: var(--text-muted); margin-top: 0.25rem; }
.exam-result-course a { color: var(--primary); }
.exam-result-score-wrap { margin: 1.5rem 0; }
.exam-result-score {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}
.exam-result-desc { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.5rem; }
.exam-result-status { font-weight: 600; margin-top: 0.5rem; }
.exam-result-passed { color: var(--success); }
.exam-result-failed { color: var(--danger); }
.exam-result-no-retry { color: var(--text-muted); font-size: 0.9rem; margin: 0; }
.exam-result-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; margin-top: 1.5rem; align-items: center; }

/* ========== Exam result – redesign (screenshot style) ========== */
.exam-result-redesign .exam-result-breadcrumb {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}
.exam-result-redesign .exam-result-breadcrumb a { color: var(--text-muted); }
.exam-result-redesign .exam-result-breadcrumb a:hover { color: var(--primary); }
.exam-result-redesign .exam-result-page-title {
    margin: 0 0 0.25rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}
.exam-result-redesign .exam-result-subtitle {
    margin: 0 0 1.5rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}
.exam-result-main-card {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
    overflow: hidden;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius);
}
.exam-result-main-left {
    flex: 0 0 280px;
    min-height: 220px;
    background: linear-gradient(135deg, #e8dcc8 0%, #d4c4a8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}
html[data-theme="dark"] .exam-result-main-left {
    background: linear-gradient(135deg, #2d2a26 0%, #3d3832 100%);
}
.exam-result-illustration {
    text-align: center;
    padding: 1.5rem;
}
.exam-result-illus-icon { font-size: 4rem; display: block; margin-bottom: 0.5rem; }
.exam-result-illus-desc {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}
.exam-result-main-right {
    flex: 1;
    min-width: 280px;
    padding: 2rem 2rem 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.exam-result-score-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}
.exam-result-big-score {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
}
.exam-result-status-pill {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}
.exam-result-status-pill.status-passed {
    background: var(--success);
    color: var(--on-primary);
}
.exam-result-status-pill.status-failed {
    background: var(--danger);
    color: #fff;
}
.exam-result-main-message {
    margin: 0 0 0.75rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
}
.exam-result-motivation {
    margin: 0 0 1.25rem;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
}
.exam-result-redesign .exam-result-actions {
    justify-content: flex-start;
    margin-top: 0;
    gap: 0.75rem;
}
.exam-result-redesign .btn-retake,
.exam-result-redesign .btn-back-course {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.exam-result-redesign .btn-back-course {
    border: 1px solid var(--border);
    color: var(--text);
}
.exam-result-redesign .btn-back-course:hover {
    background: var(--bg);
    color: var(--text);
}

.exam-result-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}
@media (max-width: 768px) {
    .exam-result-metrics { grid-template-columns: 1fr; }
}
.exam-result-metric {
    padding: 1.25rem;
    position: relative;
    text-align: left;
}
.exam-result-metric .metric-icon {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}
.exam-result-metric .metric-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.exam-result-metric .metric-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.25rem;
}
.exam-result-metric .metric-value-correct.metric-failed { color: var(--danger); }
.exam-result-metric .metric-sublabel {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.exam-result-study-plan {
    display: flex;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
    text-align: left;
}
.study-plan-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}
.study-plan-content { flex: 1; min-width: 0; }
.study-plan-title {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
}
.study-plan-desc {
    margin: 0 0 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}
.study-plan-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.study-plan-link:hover { text-decoration: underline; }
.study-plan-link .link-arrow { font-size: 0.85em; }

.exam-result-extra-links {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}
.exam-result-extra-links a { color: var(--primary); }
.exam-result-extra-links a:hover { text-decoration: underline; }

.exam-attempts-table { width: 100%; border-collapse: collapse; }
.exam-attempts-table th, .exam-attempts-table td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }
.exam-attempts-table th { font-weight: 600; }
.attempt-badge { display: inline-block; padding: 0.25rem 0.6rem; border-radius: 6px; font-size: 0.85rem; font-weight: 600; }
.attempt-passed { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.attempt-failed { background: rgba(220, 38, 38, 0.1); color: var(--danger); }

/* Certification verify (public page) */
.cert-verify-title { margin: 0 0 1rem; font-size: 1.25rem; }
.cert-verify-dl { margin: 1rem 0; }
.cert-verify-dl dt { font-weight: 600; color: var(--text-muted); font-size: 0.875rem; margin-top: 0.75rem; }
.cert-verify-dl dt:first-child { margin-top: 0; }
.cert-verify-dl dd { margin: 0.25rem 0 0; }
.cert-verify-link { margin-top: 1.25rem; }