/* Modern, clean styling for Mathematik-Olympiade Schulverwaltung (analog zum Knobler des Monats) */

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --success: #16a34a;
    --success-light: #f0fdf4;
    --warning: #d97706;
    --warning-light: #fffbeb;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --neutral-bg: #f8fafc;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text: #0f172a;
    --text-muted: #64748b;
    --radius: 10px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--neutral-bg);
    color: var(--text);
    line-height: 1.5;
}

/* Header */
.app-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1260px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-icon {
    font-size: 32px;
    background: var(--primary-light);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 1px solid #bfdbfe;
}

.brand h1 {
    font-size: 21px;
    font-weight: 800;
    color: #1e293b;
}

.brand .subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.header-stats {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.stat-pill {
    background: #f1f5f9;
    padding: 6px 13px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: #334155;
}

.stat-pill span {
    font-weight: 700;
    color: var(--primary);
}

.stat-pill.qual-pill {
    background: var(--success-light);
    border: 1px solid #bbf7d0;
    color: #166534;
}

.stat-pill.qual-pill span {
    color: var(--success);
}

/* Navigation Tabs */
.nav-tabs {
    max-width: 1260px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    gap: 6px;
    border-top: 1px solid #f1f5f9;
    overflow-x: auto;
}

.tab-btn {
    background: none;
    border: none;
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Main Content */
.main-content {
    max-width: 1260px;
    margin: 24px auto;
    padding: 0 24px 48px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 20px;
    gap: 16px;
    flex-wrap: wrap;
}

.section-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 4px;
}

.section-header p {
    font-size: 13px;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 15px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: all 0.15s;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-success {
    background: var(--success);
    color: #ffffff;
}

.btn-success:hover:not(:disabled) {
    background: #15803d;
}

.btn-secondary {
    background: #ffffff;
    color: #334155;
    border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.btn-danger {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid #fecaca;
}

.btn-danger:hover:not(:disabled) {
    background: #fee2e2;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Forms */
.form-select, .form-input {
    padding: 7px 12px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #ffffff;
    color: var(--text);
    outline: none;
}

.form-select:focus, .form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 20px;
}

.card-pad {
    padding: 18px 20px;
}

/* Class Pills & Checklist Grid */
.class-pills-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.class-pill-btn {
    padding: 7px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #ffffff;
    font-size: 13px;
    font-weight: 600;
    color: #334155;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
}

.class-pill-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.class-pill-btn.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.class-pill-count {
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 10px;
    background: #f1f5f9;
    color: #475569;
}

.class-pill-btn.active .class-pill-count {
    background: rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

.students-check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 10px;
}

.student-check-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    background: #ffffff;
    transition: all 0.15s;
    user-select: none;
}

.student-check-item:hover {
    border-color: #93c5fd;
    background: #f8fafc;
}

.student-check-item.submitted {
    border-color: var(--success);
    background: var(--success-light);
}

.student-check-item input[type="checkbox"] {
    width: 17px;
    height: 17px;
    accent-color: var(--success);
    cursor: pointer;
}

/* Teacher Distribution Cards */
.teachers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 22px;
}

.teacher-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 12px;
}

.teacher-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.teacher-code-badge {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 800;
    font-size: 12px;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 6px;
    border: 1px solid #bfdbfe;
}

.teacher-pin-badge {
    font-family: monospace;
    background: #f1f5f9;
    color: #334155;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
}

.progress-bar-wrap {
    width: 100%;
    height: 8px;
    background: #f1f5f9;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--success);
    transition: width 0.25s;
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    background: #f8fafc;
    padding: 11px 14px;
    text-align: left;
    font-weight: 600;
    color: #475569;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 9px 14px;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
}

.data-table tr:hover td {
    background: #fbfcfe;
}

/* Score Input Box */
.score-box-wrap {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.score-input {
    width: 54px;
    height: 36px;
    text-align: center;
    font-family: monospace;
    font-size: 15px;
    font-weight: 700;
    border: 1.5px solid #cbd5e1;
    border-radius: 6px;
    outline: none;
    background: #ffffff;
    transition: all 0.15s;
}

.score-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.score-input.invalid {
    border-color: var(--danger);
    background: var(--danger-light);
}

.max-pt-hint {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 9px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-qualified {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.badge-graded {
    background: #e0f2fe;
    color: #075985;
    border: 1px solid #bae6fd;
}

.badge-open {
    background: #f1f5f9;
    color: #64748b;
}

.badge-level {
    background: #eff6ff;
    color: #1d4ed8;
    font-weight: 700;
}

/* Rules Info Banner */
.rules-banner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.rule-box {
    background: #ffffff;
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 12.5px;
}

.rule-box strong {
    display: block;
    color: #1e293b;
    margin-bottom: 2px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: #ffffff;
    border-radius: 12px;
    max-width: 520px;
    width: 100%;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: 20px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-muted);
}

/* Teacher Portal Mode Banner */
.teacher-portal-banner {
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    color: #ffffff;
    border-radius: var(--radius);
    padding: 18px 22px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}

/* Print Styles */
@page {
    size: A4 portrait;
    margin: 10mm 12mm;
}

@media print {
    .app-header, .no-print, .btn, .nav-tabs, #step2BulkBar {
        display: none !important;
    }
    body {
        background: #ffffff;
        font-size: 11.5px;
    }
    .main-content {
        margin: 0;
        padding: 0;
        max-width: 100%;
    }
    .section-header {
        margin-bottom: 10px;
    }
    .section-header h2 {
        font-size: 16px;
    }
    .teachers-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
        margin-bottom: 10px !important;
    }
    .teacher-card, .card, .rule-box, tr {
        box-shadow: none !important;
        break-inside: avoid !important;
        page-break-inside: avoid !important;
    }
    .teacher-card {
        padding: 8px 12px !important;
        gap: 6px !important;
        border: 1px solid #94a3b8 !important;
    }
    .data-table th, .data-table td {
        padding: 4px 8px !important;
        font-size: 11px !important;
    }
}