/* === ModernClassic === */
[data-theme="modern-classic"] {
    --color-bg: #f4f6fb;
    --color-sidebar-bg: #1e2a3a;
    --color-sidebar-text: #c9d6e3;
    --color-sidebar-active: #3b82f6;
    --color-sidebar-hover: #2d3f55;
    --color-topbar-bg: #ffffff;
    --color-topbar-border: #e5e9f0;
    --color-card-bg: #ffffff;
    --color-card-border: #e5e9f0;
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #64748b;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-danger: #ef4444;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --border-radius: 8px;
    --font-family: 'Roboto Flex', system-ui, sans-serif;
}

/* === MidnightLibrary === */
[data-theme="midnight-library"] {
    --color-bg: #0f172a;
    --color-sidebar-bg: #0a0f1e;
    --color-sidebar-text: #94a3b8;
    --color-sidebar-active: #6366f1;
    --color-sidebar-hover: #1e293b;
    --color-topbar-bg: #1e293b;
    --color-topbar-border: #334155;
    --color-card-bg: #1e293b;
    --color-card-border: #334155;
    --color-text-primary: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-accent: #6366f1;
    --color-accent-hover: #4f46e5;
    --color-danger: #f87171;
    --color-success: #4ade80;
    --color-warning: #fbbf24;
    --shadow-card: 0 2px 8px rgba(0,0,0,0.4);
    --border-radius: 8px;
    --font-family: 'Roboto Flex', system-ui, sans-serif;
}

/* === PaperCoffee === */
[data-theme="paper-coffee"] {
    --color-bg: #fdf6ec;
    --color-sidebar-bg: #3b2a1a;
    --color-sidebar-text: #d4b896;
    --color-sidebar-active: #c07d3a;
    --color-sidebar-hover: #4e3825;
    --color-topbar-bg: #fefaf5;
    --color-topbar-border: #e6d5c0;
    --color-card-bg: #fefaf5;
    --color-card-border: #e6d5c0;
    --color-text-primary: #2c1a0e;
    --color-text-secondary: #7c5c3f;
    --color-accent: #c07d3a;
    --color-accent-hover: #a0642a;
    --color-danger: #c0392b;
    --color-success: #27ae60;
    --color-warning: #e67e22;
    --shadow-card: 0 1px 4px rgba(60,30,10,0.1);
    --border-radius: 6px;
    --font-family: 'Roboto Flex', system-ui, sans-serif;
}

/* === Global Layout === */
* { box-sizing: border-box; }

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    margin: 0;
    display: flex;
    min-height: 100vh;
}

/* === Sidebar === */
.sidebar {
    width: 240px;
    min-width: 240px;
    background-color: var(--color-sidebar-bg);
    color: var(--color-sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: width 0.2s ease;
    overflow: hidden;
}

.sidebar.collapsed {
    width: 56px;
    min-width: 56px;
}

.sidebar-brand {
    padding: 14px 12px 14px 16px;
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-brand img {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    filter: brightness(0) invert(1);
}

.sidebar-brand-text { transition: opacity 0.2s; flex: 1; }
.sidebar.collapsed .sidebar-brand-text { opacity: 0; width: 0; flex: 0; }

/* Toggle-Button im Sidebar-Brand */
.btn-sidebar-brand-toggle {
    margin-left: auto;
    flex-shrink: 0;
    color: rgba(255,255,255,0.55) !important;
}
.btn-sidebar-brand-toggle:hover {
    background-color: rgba(255,255,255,0.1) !important;
    color: #fff !important;
}

/* Collapsed: nur den Toggle-Button zentriert zeigen */
.sidebar.collapsed .sidebar-brand {
    padding: 14px 0;
    justify-content: center;
    gap: 0;
}
.sidebar.collapsed .sidebar-logo { display: none; }

.sidebar-nav { flex: 1; padding: 8px 0; overflow-y: auto; }

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    color: var(--color-sidebar-text);
    text-decoration: none;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    transition: background-color 0.15s, color 0.15s;
}

.sidebar-nav a:hover {
    background-color: var(--color-sidebar-hover);
    color: #ffffff;
}

.sidebar-nav a.active {
    background-color: var(--color-sidebar-active);
    color: #ffffff;
}

.sidebar-nav a svg { flex-shrink: 0; }
.sidebar-nav .nav-label { transition: opacity 0.2s; }
.sidebar.collapsed .nav-label { opacity: 0; width: 0; }

.sidebar-section {
    padding: 16px 16px 4px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.35);
    white-space: nowrap;
    overflow: hidden;
    transition: opacity 0.2s;
}

.sidebar-section-toggle {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
}

.sidebar-section-toggle:hover { color: rgba(255,255,255,0.6); }

.section-chevron {
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.sidebar-section-toggle[aria-expanded="false"] .section-chevron {
    transform: rotate(-90deg);
}

.sidebar-section-group {
    overflow: hidden;
    max-height: 600px;
    transition: max-height 0.25s ease;
}

.sidebar-section-group.closed {
    max-height: 0;
}

.sidebar.collapsed .sidebar-section { opacity: 0; }
.sidebar.collapsed .sidebar-section-group { max-height: 600px !important; }

/* === Main Content === */
.main-wrapper {
    margin-left: 240px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left 0.2s ease;
}

.main-wrapper.sidebar-collapsed { margin-left: 56px; }

/* === Topbar === */
.topbar {
    background-color: var(--color-topbar-bg);
    border-bottom: 1px solid var(--color-topbar-border);
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left { display: flex; align-items: center; gap: 12px; }

.btn-sidebar-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: 6px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
}

.btn-sidebar-toggle:hover { background-color: var(--color-bg); }

/* Hamburger nur auf Mobile anzeigen */
.sidebar-mobile-open-btn { display: none; }

.topbar-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.topbar-right { display: flex; align-items: center; gap: 8px; }

.topbar-user {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* === Page Content === */
.page-content { padding: 24px; flex: 1; }

/* === Cards === */
.dp-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-card);
    padding: 24px;
}

/* === Buttons === */
.btn-primary {
    background-color: var(--color-accent) !important;
    border-color: var(--color-accent) !important;
}
.btn-primary:hover {
    background-color: var(--color-accent-hover) !important;
    border-color: var(--color-accent-hover) !important;
}

/* === Tables === */
.table-dp th {
    background-color: var(--color-bg);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    border-bottom: 2px solid var(--color-card-border);
}

.table-dp tr:hover td { background-color: rgba(0,0,0,0.02); }

/* === Flash Messages === */
.flash-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 1055;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 360px;
    width: 100%;
}

/* === Forms === */
.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.form-control, .form-select {
    border-color: var(--color-card-border) !important;
    background-color: var(--color-card-bg) !important;
    color: var(--color-text-primary) !important;
    border-radius: 6px !important;
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-accent) !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15) !important;
    outline: none !important;
}

/* === Statusbar === */
.statusbar {
    background-color: var(--color-topbar-bg);
    border-top: 1px solid var(--color-topbar-border);
    padding: 6px 24px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    display: flex;
    justify-content: space-between;
}

/* === Planning Grid – sticky first column === */
.planning-grid td:first-child,
.planning-grid th:first-child {
    position: sticky;
    left: 0;
    background: var(--color-card-bg);
    z-index: 2;
}
.planning-grid thead th:first-child {
    background: #212529; /* table-dark */
}

/* === Mobile Sidebar === */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}
.sidebar-overlay.active { display: block; }

@media (max-width: 767px) {
    .sidebar {
        transform: translateX(-100%);
        z-index: 200;
        transition: transform 0.25s ease, width 0.2s ease;
    }
    .sidebar.mobile-open {
        transform: translateX(0);
        width: 240px;
        min-width: 240px;
    }
    .sidebar.mobile-open .nav-label { opacity: 1; width: auto; }
    .sidebar.mobile-open .sidebar-brand-text { opacity: 1; width: auto; flex: 1; }
    .sidebar.mobile-open .sidebar-section { opacity: 1; }
    .sidebar.mobile-open .sidebar-logo { display: block; }
    .sidebar.mobile-open .sidebar-brand { padding: 14px 12px 14px 16px; justify-content: flex-start; gap: 10px; }
    .main-wrapper {
        margin-left: 0 !important;
    }
    .sidebar-mobile-open-btn { display: flex; }
}

/* === Print === */
@media print {
    .sidebar,
    .topbar,
    .statusbar,
    .flash-container,
    .no-print {
        display: none !important;
    }

    .main-wrapper {
        margin-left: 0 !important;
        padding: 0 !important;
    }

    .page-content {
        padding: 0 !important;
    }

    body {
        font-size: 10pt;
        color: #000;
        background: #fff;
    }

    .card {
        border: none !important;
        box-shadow: none !important;
    }

    .card-body {
        padding: 0 !important;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        font-size: 9pt;
    }

    th, td {
        border: 1px solid #000 !important;
        padding: 3px 6px !important;
        background: #fff !important;
        color: #000 !important;
    }

    th {
        background: #e8e8e8 !important;
        font-weight: bold;
    }

    .print-only {
        display: block !important;
    }

    .btn,
    .alert,
    .dropdown,
    .form-select,
    .day-status-icon {
        display: none !important;
    }

    .assignment-label {
        display: block !important;
        font-size: 9pt;
    }

    a {
        color: #000 !important;
        text-decoration: none !important;
    }
}

.print-only {
    display: none;
}

.assignment-label {
    display: none;
}