/* ── Design System (CSS Variables) ──────────────────── */

/* Palette an ProfileFlow angeglichen (2026): primary blaugrau #4a6d85, accent orange #D97B4A.
   Diese Variablen färben das gesamte Legacy-System (Stundenplan-Grid, Sidebar, Modal,
   JS-erzeugte Buttons/Toasts) automatisch in die neue Farbwelt — ohne JS-verzahnte
   Klassennamen anzufassen. */
:root, [data-theme="light"] {
    --color-bg: #ffffff;
    --color-surface: #ffffff;
    --color-surface-hover: #f3f4f6;
    --color-text: #111827;
    --color-text-muted: #6b7280;
    --color-text-light: #9ca3af;
    --color-border: #e5e7eb;
    --color-primary: #4a6d85;
    --color-primary-hover: #3d5a6e;
    --color-primary-light: #e8eff4;
    --color-accent: #D97B4A;
    --color-accent-hover: #c26938;
    --color-accent-light: #fdf0e8;
    --color-success: #059669;
    --color-success-light: #ecfdf5;
    --color-danger: #dc2626;
    --color-danger-light: #fef2f2;
    --color-warning: #d97706;
    --color-warning-light: #fffbeb;
    --color-info: #0891b2;
    --color-info-light: #ecfeff;
    --color-frozen: #2563eb;
    --color-frozen-light: #dbeafe;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.10);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

[data-theme="dark"] {
    --color-bg: #171717;
    --color-surface: #1e1e1e;
    --color-surface-hover: #262626;
    --color-text: #f3f4f6;
    --color-text-muted: #9ca3af;
    --color-text-light: #6b7280;
    --color-border: #2e2e2e;
    --color-primary: #7B9EB8;
    --color-primary-hover: #adc5d7;
    --color-primary-light: #2e414f;
    --color-accent: #D97B4A;
    --color-accent-hover: #e89263;
    --color-accent-light: #3a2a1f;
    --color-success: #10b981;
    --color-success-light: #064e3b;
    --color-danger: #ef4444;
    --color-danger-light: #450a0a;
    --color-warning: #f59e0b;
    --color-warning-light: #451a03;
    --color-info: #22d3ee;
    --color-info-light: #164e63;
    --color-frozen: #60a5fa;
    --color-frozen-light: #1e3a5f;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
}

/* ── Reset & Base ──────────────────────────────────── */

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

html { height: 100%; }
body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.5;
    transition: background 0.2s, color 0.2s;
    -webkit-font-smoothing: antialiased;
}

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

/* ── Layout ────────────────────────────────────────── */

.top-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 1rem;
    min-height: 56px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
}

/* Hamburger-Toggle nur auf Tablet/Mobile sichtbar */
.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-radius: var(--radius-xs);
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    align-items: center;
    justify-content: center;
}
.nav-toggle:hover { background: var(--color-surface-hover); }
.nav-overlay {
    display: none;
    position: fixed;
    inset: 56px 0 0 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 90;
}

.top-bar .logo {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-primary);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.top-bar .logo .logo-icon {
    font-size: 1.3rem;
    line-height: 1;
}

.top-bar .logo .logo-icon-svg {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
}

/* Logo-Farbe folgt dem Primary-Theme */
.top-bar .logo .logo-icon-svg {
    color: var(--color-primary);
}

.top-bar .logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.top-bar .logo .logo-subtitle {
    font-size: 0.6rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 0.04em;
}

.top-bar nav {
    display: flex;
    gap: 0.25rem;
    flex: 1;
    overflow-x: auto;
}

.top-bar nav a {
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-xs);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all 0.15s;
}
.top-bar nav a:hover, .top-bar nav a.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.top-bar .actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
}

.main-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

.main-content.full-width {
    max-width: none;
}

/* ── Cards ─────────────────────────────────────────── */

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.15s;
}
.card:hover { box-shadow: var(--shadow-md); }
.card + .card { margin-top: 0.75rem; }

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.card-title {
    font-weight: 600;
    font-size: 1.05rem;
}

/* ── Buttons ───────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
    text-align: center;
    justify-content: center;
}
.btn:hover { background: var(--color-surface-hover); box-shadow: var(--shadow-sm); }

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

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

.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }
.btn-lg { padding: 0.7rem 1.5rem; font-size: 1rem; }
.btn-block { display: flex; width: 100%; }
.btn-ghost { border: none; background: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { background: var(--color-surface-hover); color: var(--color-text); }

/* ── Forms ──────────────────────────────────────────── */

.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    font-weight: 500;
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
    color: var(--color-text-muted);
}

input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="search"], input[type="date"],
input[type="file"], select, textarea {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.9rem;
    font-family: var(--font);
    transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13,148,136,0.15);
}
input::placeholder, textarea::placeholder {
    color: var(--color-text-light);
}

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

.form-row {
    display: flex;
    gap: 0.75rem;
}
.form-row .form-group { flex: 1; }

.form-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1.25rem;
}

/* ── Alerts ────────────────────────────────────────── */

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}
.alert-success { background: var(--color-success-light); color: var(--color-success); border-color: var(--color-success); }
.alert-danger { background: var(--color-danger-light); color: var(--color-danger); border-color: var(--color-danger); }
.alert-warning { background: var(--color-warning-light); color: var(--color-warning); border-color: var(--color-warning); }

/* ── Badges ────────────────────────────────────────── */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge-program { background: var(--color-primary-light); color: var(--color-primary); }
.badge-semester { background: var(--color-info-light); color: var(--color-info); }
.badge-frozen { background: var(--color-frozen-light); color: var(--color-frozen); }

/* ── Data Tables ───────────────────────────────────── */

.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 2px solid var(--color-border);
}
.data-table td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
}
.data-table tbody tr:hover {
    background: var(--color-surface-hover);
}

/* ── Stats Grid (Dashboard) ────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}
.stat-card-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}
.stat-card-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-top: 0.3rem;
}

/* ── Progress Bar ──────────────────────────────────── */

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--color-surface-hover);
    border-radius: 999px;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background: var(--color-primary);
    border-radius: 999px;
    transition: width 0.5s ease;
}

/* ── Auth Pages ────────────────────────────────────── */

.auth-container {
    max-width: 400px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.auth-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.25rem;
}
.auth-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* ── Section Headers ───────────────────────────────── */

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.section-title {
    font-weight: 700;
    font-size: 1.3rem;
}

/* ── Empty State ───────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-text-muted);
}
.empty-state-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.empty-state-text { font-size: 0.95rem; }

/* ── Theme Toggle ──────────────────────────────────── */

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.3rem;
    border-radius: var(--radius-xs);
    color: var(--color-text-muted);
    transition: color 0.15s;
}
.theme-toggle:hover { color: var(--color-text); }

/* ── Setup Wizard ──────────────────────────────────── */

.setup-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 1.5rem;
}

.setup-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.step-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--color-surface-hover);
    color: var(--color-text-muted);
    border: 2px solid var(--color-border);
    transition: all 0.2s;
}
.setup-step.active .step-dot { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.setup-step.done .step-dot { background: var(--color-success); color: #fff; border-color: var(--color-success); }

.step-label { font-size: 0.7rem; color: var(--color-text-muted); }
.setup-step.active .step-label { color: var(--color-primary); font-weight: 600; }

.step-line {
    width: 40px;
    height: 2px;
    background: var(--color-border);
    margin: 0 0.25rem;
    margin-bottom: 1rem;
}
.step-line.done { background: var(--color-success); }

/* ── Modal ─────────────────────────────────────────── */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 300;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.modal-overlay.active { display: flex; }

.modal {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
}
.modal-header h3 { font-weight: 600; font-size: 1.1rem; }
.modal-body {
    padding: 1rem 1.25rem;
    overflow-y: auto;
    flex: 1;
}

/* ── Utility Classes ───────────────────────────────── */

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 0.85rem; }
.text-center { text-align: center; }
.text-success { color: var(--color-success) !important; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.hidden { display: none !important; }

/* ── Availability Grid ─────────────────────────────── */

.avail-grid-wrapper {
    overflow-x: auto;
}

.avail-grid {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}
.avail-grid th, .avail-grid td {
    text-align: center;
    padding: 0.4rem;
}
.avail-corner {
    width: 110px;
}
.avail-day-header {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    padding: 0.5rem 0.4rem !important;
    border-bottom: 2px solid var(--color-border);
    /* Klar als klickbarer Tages-Schalter erkennbar (Sascha-Feedback 07/26):
       'ganzen Tag sperren' war unsichtbar, weil die Köpfe nicht wie Buttons aussahen. */
    cursor: pointer;
    user-select: none;
    border-radius: 6px 6px 0 0;
    transition: background 0.12s, color 0.12s;
}
.avail-day-header:hover {
    background: var(--color-primary);
    color: #fff;
}
.avail-day-header:hover::after {
    content: " ⤓";
    font-weight: 700;
}
/* Block-Zeilenkoepfe (B1-B5) genauso klickbar wie die Tage — Sascha-Call
   2026-07-23: 'es gibt Leute, die nur um 8.15 Uhr alles geblockt haben moechten'. */
.avail-block-label {
    cursor: pointer;
    user-select: none;
    border-radius: 6px 0 0 6px;
    transition: background 0.12s, color 0.12s;
}
.avail-block-label:hover {
    background: var(--color-primary);
}
.avail-block-label:hover .avail-block-num,
.avail-block-label:hover .avail-block-time {
    color: #fff;
}
.avail-block-label:hover .avail-block-num::after {
    content: " ⇥";
    font-weight: 700;
}

/* Filter-Pills (Lehrenden-Liste: Suche + Status-Filter) */
.lf-btn {
    padding: 0.35rem 0.7rem;
    font-size: 0.8rem;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    background: transparent;
    cursor: pointer;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.lf-btn:hover { background: var(--color-surface-hover); }
.lf-btn.lf-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.avail-block-label {
    text-align: left !important;
    padding: 0.5rem 0.75rem !important;
    border-right: 2px solid var(--color-border);
}
.avail-block-num {
    font-weight: 600;
    font-size: 0.85rem;
}
.avail-block-time {
    font-size: 0.7rem;
    color: var(--color-text-muted);
}
.avail-cell {
    padding: 0.5rem !important;
}

.avail-btn {
    width: 100%;
    height: 52px;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.avail-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.avail-free {
    background: var(--color-success-light);
    color: var(--color-success);
    border-color: var(--color-success);
}
.avail-free:hover {
    background: var(--color-success);
    color: #fff;
}

.avail-blocked {
    background: var(--color-danger-light);
    color: var(--color-danger);
    border-color: var(--color-danger);
}
.avail-blocked:hover {
    background: var(--color-danger);
    color: #fff;
}

.avail-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.75rem;
    flex-shrink: 0;
}
.badge-avail-set {
    background: var(--color-danger-light);
    color: var(--color-danger);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-xs);
    font-weight: 500;
}
.badge-avail-open {
    background: var(--color-surface-hover);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-xs);
    font-weight: 500;
}
.card-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Availability Peek Modal (Notion-style centered overlay) */
.avail-peek-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.15s ease;
}
.avail-peek {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    width: 90%;
    max-width: 580px;
    box-shadow: var(--shadow-lg);
    animation: peekSlideUp 0.2s ease;
}
@keyframes peekSlideUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.avail-peek-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}
.avail-peek-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    line-height: 1.3;
}
.avail-peek-close {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    text-decoration: none;
    line-height: 1;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-xs);
    transition: background 0.15s, color 0.15s;
}
.avail-peek-close:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.avail-legend {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}
.avail-legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}
.avail-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.avail-dot-free { background: var(--color-success); }
.avail-dot-blocked { background: var(--color-danger); }

/* Schedule Toolbar */
.schedule-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Scheduler Modal */
.scheduler-modal {
    position: fixed;
    inset: 0;
    z-index: 500;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.scheduler-modal.hidden { display: none; }
.scheduler-modal-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-lg);
}

/* Toast animation */
@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ── Export Grid ──────────────────────────────────── */

.export-grid-wrapper {
    overflow-x: auto;
    margin-top: 0.75rem;
}

.export-grid {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}
.export-grid th, .export-grid td {
    text-align: center;
    vertical-align: top;
}
.eg-corner {
    width: 90px;
}
.eg-day-header {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    padding: 0.6rem 0.4rem !important;
    border-bottom: 2px solid var(--color-border);
}
.eg-block-label {
    text-align: left !important;
    padding: 0.6rem 0.75rem !important;
    border-right: 2px solid var(--color-border);
    vertical-align: middle;
}
.eg-block-num {
    font-weight: 600;
    font-size: 0.85rem;
}
.eg-block-time {
    font-size: 0.7rem;
    color: var(--color-text-muted);
}
.eg-cell {
    border: 1px solid var(--color-border);
    padding: 0.3rem !important;
    min-height: 60px;
}

.eg-entry {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-xs);
    padding: 0.35rem 0.5rem;
    margin-bottom: 0.25rem;
    text-align: left;
    position: relative;
}
.eg-entry-frozen {
    border-color: var(--color-frozen);
    background: var(--color-frozen-light);
}
.eg-entry-title {
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}
.eg-entry-meta {
    display: flex;
    gap: 0.4rem;
    font-size: 0.68rem;
    color: var(--color-text-muted);
    margin-top: 0.15rem;
}
.eg-room {
    font-weight: 600;
    color: var(--color-primary);
}
.eg-frozen-badge {
    position: absolute;
    top: 0.2rem;
    right: 0.3rem;
    font-size: 0.6rem;
}
.eg-empty {
    color: var(--color-text-light);
    font-size: 0.8rem;
    padding: 0.5rem;
}

/* ── Responsive ────────────────────────────────────── */

/* Tablet / Splitscreen-Browser: Nav als Drawer von links, Burger-Toggle aktiv */
@media (max-width: 1024px) {
    .nav-toggle {
        display: inline-flex;
    }
    .top-bar nav {
        position: fixed;
        top: 56px;
        left: 0;
        bottom: 0;
        width: 260px;
        max-width: 80vw;
        background: var(--color-surface);
        border-right: 1px solid var(--color-border);
        flex-direction: column;
        align-items: stretch;
        gap: 0.15rem;
        padding: 0.75rem;
        overflow-y: auto;
        overflow-x: hidden;
        transform: translateX(-100%);
        transition: transform 0.2s ease-out;
        box-shadow: 4px 0 12px rgba(0, 0, 0, 0.15);
        z-index: 95;
    }
    .top-bar nav a {
        padding: 0.7rem 0.9rem;       /* Touch-Target ≥ 44px Hoehe */
        font-size: 0.95rem;
        border-radius: var(--radius-sm);
    }
    body.nav-open .top-bar nav {
        transform: translateX(0);
    }
    body.nav-open .nav-overlay {
        display: block;
    }
    .top-bar .logo-subtitle {
        display: none;  /* spart Platz im Header */
    }
    .top-bar .actions {
        gap: 0.35rem;
    }
    .top-bar .actions .text-sm {
        display: none;  /* User-Name weglassen */
    }
    .badge-semester {
        max-width: 110px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        display: inline-block;
    }
    .schedule-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .form-row {
        flex-wrap: wrap;
    }
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    .data-table {
        font-size: 0.85rem;
    }
    /* Touch-friendly Action-Buttons */
    .btn { min-height: 40px; }
    .btn-sm { min-height: 32px; }

}

/* Mobile (≤ 640px): noch kompakter */
@media (max-width: 640px) {
    .main-content { padding: 1rem 0.75rem; }
    .top-bar { padding: 0 0.5rem; }
    .top-bar .logo { font-size: 1rem; }
    .top-bar .logo .logo-icon-svg { width: 22px; height: 22px; }
    .top-bar .actions .badge-semester { display: none; }
    .form-row { flex-direction: column; gap: 0; }
    .auth-container { margin: 1.5rem auto; }
    .auth-card { padding: 1.5rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    /* Tabellen scrollen horizontal statt zu zerbrechen */
    .card .data-table { font-size: 0.78rem; }
}

/* ──────────────────────────────────────────────────────────────────────
   Auswahl-Highlights für die interaktiven Plan-Boards.
   Als echte CSS-Klassen (nicht dynamische Tailwind-Utilities), weil das
   Tailwind-Play-CDN für per-JS hinzugefügte Klassen kein CSS generiert —
   sonst bleibt die Auswahl unsichtbar. Theme-sicher über --color-primary.
   ────────────────────────────────────────────────────────────────────── */
/* outline statt border/box-shadow/background: Tailwind setzt outline auf diesen
   Elementen NICHT, also greift unsere Regel ohne Cascade-Kampf. outline-offset
   negativ -> Ring liegt innen, wird vom overflow der Sidebar nicht geclippt. */
.is-selected {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}
.cell-target {
    outline: 1.5px dashed var(--color-primary);
    outline-offset: -2px;
}