/* =============================================================================
   Abiturkasse – Dark Theme
   ============================================================================= */

:root {
    --bg-primary: #121212;
    --bg-secondary: #1E1E1E;
    --bg-card: #252525;
    --bg-input: #2C2C2C;
    --bg-hover: #333333;
    --text-primary: #E0E0E0;
    --text-secondary: #A0A0A0;
    --text-muted: #666666;
    --accent-primary: #1B5E20;
    --accent-secondary: #A5D6A7;
    --accent-light: #4CAF50;
    --danger: #C62828;
    --danger-light: #EF5350;
    --info: #1565C0;
    --border-color: #333333;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.5);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.2s ease;
    --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html { font-size: 16px; }

body {
    font-family: var(--font-stack);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover { color: var(--accent-light); }

/* --- Layout --- */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px;
}

.main-content {
    padding: 24px 0;
    min-height: calc(100vh - 140px);
}

/* --- Navbar --- */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-secondary) !important;
    letter-spacing: -0.5px;
}

.navbar-logo {
    height: 32px;
    width: auto;
}

.navbar-links {
    display: flex;
    gap: 24px;
    align-items: center;
    list-style: none;
}

.navbar-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 4px 0;
    position: relative;
    transition: color var(--transition);
}

.navbar-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-secondary);
    transition: width 0.3s ease;
}

.navbar-links a:hover::after,
.navbar-links a.active::after { width: 100%; }

.navbar-links a:hover,
.navbar-links a.active { color: var(--text-primary); }

/* Hamburger-Menü (mobil) */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    z-index: 200;
    padding: 80px 24px 24px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.mobile-nav.open { transform: translateX(0); }

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 199;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav-overlay.open { opacity: 1; }

.mobile-nav a {
    display: block;
    color: var(--text-primary);
    padding: 14px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
}

/* --- Seitentitel & Begrüßungstext --- */
.page-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.greeting-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    min-height: 44px;
    min-width: 44px;
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background: #2E7D32;
    color: white;
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-light);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    min-height: 36px;
}

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

/* --- Formulare & Eingabefelder --- */
.form-group { margin-bottom: 20px; }

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-stack);
    transition: border-color var(--transition), box-shadow var(--transition);
    min-height: 44px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 3px rgba(165, 214, 167, 0.15);
}

.form-input::placeholder { color: var(--text-muted); }

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23A0A0A0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* --- Toggle-Switches --- */
.toggle-switch {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.toggle-switch input { display: none; }

.toggle-track {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--border-color);
    border-radius: 12px;
    transition: background var(--transition);
    flex-shrink: 0;
}

.toggle-track::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: transform var(--transition), background var(--transition);
}

.toggle-switch input:checked + .toggle-track {
    background: rgba(27, 94, 32, 0.3);
}

.toggle-switch input:checked + .toggle-track::after {
    transform: translateX(20px);
    background: var(--accent-secondary);
}

.toggle-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* --- Flash-Meldungen (Erfolg, Fehler, Info) --- */
.flash {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flash-success {
    background: rgba(27, 94, 32, 0.2);
    border: 1px solid var(--accent-primary);
    color: var(--accent-secondary);
}

.flash-error {
    background: rgba(198, 40, 40, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger-light);
}

.flash-info {
    background: rgba(21, 101, 192, 0.2);
    border: 1px solid var(--info);
    color: #64B5F6;
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.7;
    padding: 4px;
    min-width: 32px;
    min-height: 32px;
}

.flash-close:hover { opacity: 1; }

.flash.fade-out {
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* --- Tabellen --- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table th {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    text-align: left;
    white-space: nowrap;
}

.table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.table tr.cancelled td { opacity: 0.5; }

/* --- Badges --- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(27, 94, 32, 0.3);
    color: var(--accent-secondary);
}

.badge-danger {
    background: rgba(198, 40, 40, 0.3);
    color: var(--danger-light);
}

.badge-info {
    background: rgba(21, 101, 192, 0.3);
    color: #64B5F6;
}

.badge-muted {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

/* --- Stat-Cards (Dashboard-Kacheln) --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.accent { color: var(--accent-secondary); }

/* --- Donut-Charts (Schüler-Dashboard) --- */
.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.chart-wrapper {
    position: relative;
    max-width: 250px;
    margin: 0 auto;
}

.chart-center-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.chart-center-text .amount {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chart-center-text .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.chart-title {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-weight: 600;
}

/* --- Einzahlungsliste --- */
.transaction-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.transaction-card {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 16px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.transaction-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.transaction-desc {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.transaction-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.transaction-amount {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-secondary);
    white-space: nowrap;
}

/* --- Wenn nix da ist (Empty State) --- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 1rem;
    margin-bottom: 16px;
}

/* --- Karten --- */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* --- Login & Setup --- */
.auth-container {
    max-width: 420px;
    margin: 60px auto;
    padding: 0 16px;
}

.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 0.9rem;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* --- Footer --- */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    margin-top: auto;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

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

/* --- Utility-Klassen --- */
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent-secondary); }
.text-danger { color: var(--danger-light); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }

/* --- Responsive (Handy & Tablet) --- */
@media (max-width: 767px) {
    .hamburger { display: flex; }
    .navbar-links { display: none; }
    .mobile-nav { display: block; }
    .mobile-nav-overlay { display: block; pointer-events: none; }
    .mobile-nav-overlay.open { pointer-events: auto; }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .chart-grid { grid-template-columns: 1fr; }
    .table th, .table td { padding: 10px 12px; font-size: 0.85rem; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .greeting-text { font-size: 1.25rem; }
}