/* ==========================================
   DESIGN SYSTEM - KursSelect
   Aesthetics: Sleek Charcoal Glassmorphism
   Theme: Neutral Charcoal & Emerald Green Accent (No Purple/Blue)
   Fonts: Outfit (Headings), Inter (Body)
   ========================================== */

:root {
    --bg-app: #18181b;
    --bg-glass: rgba(39, 39, 42, 0.82);
    --bg-glass-hover: rgba(63, 63, 70, 0.9);
    --border-glass: rgba(255, 255, 255, 0.12);
    
    --primary: #10b981;
    --primary-hover: #059669;
    --primary-soft: rgba(16, 185, 129, 0.18);
    
    --success: #10b981;
    --success-soft: rgba(16, 185, 129, 0.2);
    
    --warning: #f59e0b;
    --warning-soft: rgba(245, 158, 11, 0.2);
    
    --danger: #ef4444;
    --danger-soft: rgba(239, 68, 68, 0.2);
    
    --text-main: #f4f4f5;
    --text-muted: #d4d4d8;
    --text-white: #ffffff;
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-premium: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    
    --font-size-offset: 0px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base resets & accessible font scaling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: calc(16px + var(--font-size-offset, 0px));
}

button, input, select, textarea, table {
    font-size: inherit;
    font-family: inherit;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 1rem;
    background-color: var(--bg-app);
    background-image: radial-gradient(at 0% 0%, var(--primary-soft) 0px, transparent 50%),
                      radial-gradient(at 100% 100%, var(--warning-soft) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1.25;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 4px;
    line-height: 1.5;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
}

.section-subtitle {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
}

.section-description {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

.app-header {
    background-color: var(--bg-header, rgba(24, 24, 27, 0.95));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    padding: 8px 0 6px 0;
}

.header-container {
    width: 95%;
    max-width: 1560px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.header-top-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.brand-icon {
    font-size: 1.625rem;
}

.brand-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--text-white);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.brand-logo-img {
    height: 32px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
    border-radius: 4px;
    margin-right: 8px;
}

.header-right-section {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.school-year-global-wrapper {
    flex-shrink: 0;
}

.school-year-select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-white);
    padding: 5px 10px;
    border-radius: 8px;
    font-size: 0.8125rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    backdrop-filter: blur(5px);
    outline: none;
}

.school-year-select option {
    background: var(--bg-glass);
    color: var(--text-main);
}

.font-size-controls {
    display: flex;
    gap: 2px;
    background: rgba(255, 255, 255, 0.04);
    padding: 3px 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-glass);
    flex-shrink: 0;
}

.font-size-controls button {
    padding: 2px 8px !important;
    font-weight: 700;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.8125rem;
    cursor: pointer;
    line-height: 1.2;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.font-size-controls button:hover {
    color: var(--text-white);
    background: rgba(255, 255, 255, 0.1);
}

/* User Badge & Avatar */
.user-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(39, 39, 42, 0.85);
    border: 1px solid var(--border-glass);
    border-radius: 50px;
    padding: 4px 8px 4px 6px;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    width: auto;
    max-width: none;
    box-sizing: border-box;
}

.badge-avatar {
    width: 32px;
    height: 32px;
    min-width: 32px;
    max-width: 32px;
    min-height: 32px;
    max-height: 32px;
    aspect-ratio: 1 / 1;
    background: linear-gradient(135deg, var(--primary), #059669);
    border-radius: 50%;
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    font-size: 0.8125rem;
    flex-shrink: 0;
}

.badge-info {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    max-width: 140px;
    min-width: 0;
}

.badge-name {
    font-size: 0.84375rem;
    font-weight: 600;
    color: var(--text-white);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.badge-role {
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logout-btn {
    color: var(--text-muted);
    width: 28px;
    height: 28px;
    min-width: 28px;
    max-width: 28px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: var(--transition-fast);
    flex-shrink: 0;
    box-sizing: border-box;
}

.logout-btn:hover {
    color: var(--text-white);
    border-color: var(--primary);
    background: var(--primary-soft);
}

.logout-btn[title="Abmelden"]:hover {
    color: #fca5a5;
    border-color: var(--danger);
    background: var(--danger-soft);
}

/* Navigation Bar */
.main-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
    gap: 4px;
    align-items: center;
    margin: 0;
    padding: 0;
}

.main-nav a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.8125rem;
    padding: 5px 12px;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    border: none;
}

.main-nav a:hover {
    color: var(--text-main);
    background-color: var(--primary-soft);
}

.main-nav a.active {
    color: var(--text-white);
    background-color: var(--primary);
    font-weight: 600;
    box-shadow: 0 2px 10px var(--primary-soft);
}

.main-nav a.active:hover {
    background-color: var(--primary-hover);
    color: var(--text-white);
}

.logout-btn:hover {
    color: #fca5a5;
    background: var(--danger-soft);
}

/* Application Layout */
.app-content-wrapper {
    flex: 1;
    width: 90%;
    max-width: 1400px;
    margin: 40px auto;
}

.content-container {
    animation: fadeIn 0.4s ease-out;
}

/* Welcome Banner */
.welcome-banner {
    margin-bottom: 30px;
}

.banner-title {
    font-size: 2rem;
    font-weight: 800;
}

.banner-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

.text-primary {
    color: var(--primary);
}

/* General components: Glass Cards */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    padding: 30px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

/* Buttons Styling */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--text-white);
    box-shadow: 0 4px 14px var(--primary-soft);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--primary-soft);
    color: var(--text-white);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.05);
    border: 1.5px solid var(--border-glass);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--text-white);
    background-color: var(--primary-soft);
}

.btn-outline-warning {
    background: transparent;
    border: 1.5px solid var(--warning);
    color: var(--warning);
}

.btn-outline-warning:hover {
    background-color: var(--warning-soft);
    color: var(--warning);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
}

.btn-ghost:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-white);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
}

/* Grids & Panels */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
}

.clickable-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(16, 185, 129, 0.25);
    border-color: var(--primary);
    background: var(--bg-glass-hover);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    background: var(--primary-soft);
    padding: 10px;
    border-radius: var(--radius-md);
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 4px;
}

/* Tables styling */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.8125rem;
}

.table th {
    padding: 12px 14px;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(24, 24, 27, 0.6);
    border-bottom: 2px solid rgba(255, 255, 255, 0.15);
}

.table td {
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    font-size: 0.8125rem;
    color: var(--text-main);
}

.table td .font-bold {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-white);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table-compact th, .table-compact td {
    padding: 8px 10px;
    font-size: 0.75rem;
}

/* Disable any table row hover effects globally */
table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.03) !important;
    transform: none !important;
    box-shadow: none !important;
}

/* Badges & Course types */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.3;
    text-align: center;
    box-sizing: border-box;
}

.badge-pill {
    border-radius: 30px;
}

.badge-success { background-color: var(--success-soft); color: var(--success); border: 1px solid var(--success); }
.badge-warning { background-color: var(--warning-soft); color: var(--warning); border: 1px solid var(--warning); }
.badge-danger { background-color: var(--danger-soft); color: var(--danger); border: 1px solid var(--danger); }
.badge-primary { background-color: var(--primary-soft); color: var(--primary); border: 1px solid var(--primary); }
.badge-outline { border: 1px solid var(--border-glass); color: var(--text-muted); }

.course-type-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    line-height: 1.25;
    text-align: center;
    box-sizing: border-box;
}

.type-pflicht { background-color: var(--danger-soft); color: var(--danger); border: 1px solid var(--danger); }
.type-wahlpflicht { background-color: var(--success-soft); color: var(--success); border: 1px solid var(--success); }
.type-ag_freifach { background-color: var(--warning-soft); color: var(--warning); border: 1px solid var(--warning); }

/* Alerts */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 0.9375rem;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.alert-danger {
    background-color: var(--danger-soft);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-success {
    background-color: var(--success-soft);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-warning {
    background-color: var(--warning-soft);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.alert-danger-compact {
    background-color: var(--danger-soft);
    color: var(--danger);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    text-align: center;
    border: 1px solid var(--danger);
}

/* Make SVG icons scale with text */
.btn svg,
.alert svg,
.logout-btn svg,
.flex-actions svg,
.glass-card svg {
    width: 1.2em !important;
    height: 1.2em !important;
    flex-shrink: 0;
}

/* Authentication Styling */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    animation: fadeIn 0.4s ease-out;
}

.auth-card {
    width: 100%;
    max-width: 480px;
    padding: 40px;
}

.auth-title {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 8px;
}

.auth-subtitle {
    color: var(--text-muted);
    text-align: center;
    font-size: 0.875rem;
    margin-bottom: 30px;
}

.auth-form .form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border-glass);
    background-color: rgba(24, 24, 27, 0.8);
    transition: var(--transition-fast);
    outline: none;
    color: var(--text-white);
}

select option {
    background-color: #27272a;
    color: #ffffff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-row .col-6 {
    flex: 0 0 calc(50% - 8px);
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 10px;
    margin-top: 8px;
    max-height: 200px;
    overflow-y: auto;
    padding: 8px;
    background: rgba(24, 24, 27, 0.8);
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border-glass);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-main);
}

.checkbox-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Demo quicklogin styles */
.demo-login-box {
    margin-top: 30px;
    padding: 16px;
    background: rgba(16, 185, 129, 0.08);
    border-radius: var(--radius-md);
    border: 1px dashed rgba(16, 185, 129, 0.4);
}

.demo-login-box h3 {
    font-size: 0.8125rem;
    margin-bottom: 10px;
    color: #34d399;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.demo-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Teacher View Grid */
.teacher-view-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 30px;
    align-items: start;
}

@media (max-width: 1024px) {
    .teacher-view-grid {
        grid-template-columns: 1fr;
    }
}

.courses-list-column, .left-column-wrapper {
    min-width: 0;
}

.courses-compact-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.course-compact-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-fast);
}

.course-compact-card:hover {
    background: var(--bg-glass-hover);
    transform: translateX(2px);
    border-color: var(--primary);
}

.border-left-pflicht { border-left: 5px solid var(--danger); }
.border-left-wahlpflicht { border-left: 5px solid var(--primary); }
.border-left-ag_freifach { border-left: 5px solid var(--warning); }
.border-left-gray { border-left: 5px solid var(--text-muted); }

.c-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.c-title {
    font-size: 1.125rem;
    color: var(--text-white);
}

/* Course Grid for Student Selector */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 25px;
}

.course-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.course-disabled {
    opacity: 0.75;
    background: rgba(24, 24, 27, 0.8);
}

.course-disabled:hover {
    transform: none;
    box-shadow: var(--shadow-premium);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.course-title {
    font-size: 1.375rem;
    margin-bottom: 8px;
    line-height: 1.2;
}

.course-desc {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 66px;
}

.course-details-mini {
    background: rgba(24, 24, 27, 0.6);
    border-radius: var(--radius-sm);
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.detail-mini-item {
    display: flex;
    font-size: 0.8125rem;
    justify-content: space-between;
}

.detail-mini-item .label {
    color: var(--text-muted);
    font-weight: 500;
}

.detail-mini-item .value {
    color: var(--text-main);
    font-weight: 600;
}

/* Occupancy progress bar */
.course-occupancy-bar-wrapper {
    margin-bottom: 8px;
}

.occupancy-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    margin-bottom: 6px;
}

.occupancy-bar-bg {
    width: 100%;
    height: 8px;
    background-color: var(--border-glass);
    border-radius: 10px;
    overflow: hidden;
}

.occupancy-bar-fill {
    height: 100%;
    border-radius: 10px;
    transition: width var(--transition-normal);
}

.bg-success { background-color: var(--success); }
.bg-warning { background-color: var(--warning); }

/* Course Detailed View */
.course-detail-header-card {
    background: linear-gradient(135deg, rgba(39, 39, 42, 0.95), rgba(24, 24, 27, 0.95));
}

.detail-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.course-detail-title {
    font-size: 2rem;
    font-weight: 800;
}

.occupancy-large {
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    padding: 12px 20px;
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-sm);
}

.occupancy-number {
    display: block;
    font-family: 'Outfit', sans-serif;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.occupancy-label {
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.divider {
    border: 0;
    height: 1px;
    background: var(--border-glass);
    margin: 20px 0;
}

.course-meta-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
}

.meta-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
}

.enrollment-lists-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 768px) {
    .enrollment-lists-grid {
        grid-template-columns: 1fr;
    }
}

.back-link {
    margin-bottom: 10px;
}

.btn-back {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.875rem;
}

.btn-back:hover {
    color: #34d399;
}

/* Filter controls */
.flex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.filter-form {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.filter-form label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
}

.filter-form select {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border-glass);
    outline: none;
    font-weight: 600;
    color: var(--text-white);
    background: rgba(24, 24, 27, 0.8);
}

.admin-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    align-items: start;
}

@media (max-width: 900px) {
    .admin-grid {
        grid-template-columns: 1fr;
    }
}

.flex-actions {
    display: flex;
    gap: 8px;
}

/* Footer layout */
.app-footer {
    background-color: var(--bg-header, rgba(24, 24, 27, 0.95));
    border-top: 1px solid var(--border-glass);
    padding: 24px 0;
    margin-top: 60px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-container {
    width: 90%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--primary);
}

/* Utilities */
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 24px; }
.mt-5 { margin-top: 40px; }
.mb-4 { margin-bottom: 24px; }
.mb-5 { margin-bottom: 40px; }
.p-4 { padding: 24px !important; }
.p-5 { padding: 40px !important; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--text-muted); }

/* Keyframe animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Modal Overlay & Card Centering */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(18, 18, 18, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.25s ease-out;
}

dialog.modal {
    border: none !important;
    background: transparent !important;
    padding: 0 !important;
    margin: auto !important;
    overflow: visible !important;
    width: 90vw !important;
    max-width: 600px !important;
    color: var(--text-main) !important;
}

dialog.modal::backdrop {
    background: rgba(18, 18, 18, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-content {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--border-glass);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 30px;
    color: var(--text-main);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1.5px solid var(--border-glass);
}

.btn-close, .close-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-glass);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition-fast);
    padding: 0;
    flex-shrink: 0;
}

.btn-close:hover, .close-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.4);
    color: #f87171;
    transform: scale(1.08);
}

/* Multi-column layout additions */
.flex-column {
    flex-direction: column;
}

.left-column-wrapper {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ==========================================
   MOBILE-FIRST RESPONSIVE BREAKPOINTS
   ========================================== */

/* Tablet & Mobile Layouts */
@media (max-width: 768px) {
    .app-header {
        padding: 10px 0 6px 0;
    }
    
    .header-top-row {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
    
    .brand {
        width: 100%;
        justify-content: center;
    }
    
    .header-right-section {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
        gap: 8px;
    }
    
    .main-nav ul {
        gap: 4px;
    }
    
    .main-nav a {
        padding: 5px 9px;
        font-size: 12px;
    }
    
    .school-year-global-wrapper {
        margin-right: 0 !important;
        margin-top: 2px;
    }
    
    .app-content-wrapper {
        margin: 20px auto;
        width: 94%;
    }
    
    .banner-title {
        font-size: 26px;
    }
    
    .banner-subtitle {
        font-size: 14px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .table td, .table th {
        padding: 12px 10px;
        font-size: 14px;
    }
}

/* Small Smartphone Layouts */
@media (max-width: 576px) {
    .glass-card {
        padding: 20px 16px;
        border-radius: var(--radius-md);
    }
    
    .form-row {
        flex-direction: column;
        gap: 12px;
    }
    
    .form-row .col-6 {
        flex: 0 0 100%;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .course-card {
        padding: 18px 14px;
    }
    
    .course-title {
        font-size: 20px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .modal-content {
        padding: 20px 16px;
        width: 95%;
        max-height: 90vh;
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
    
    .footer-links {
        justify-content: center;
    }
}