:root {
    --background: #ffffff;
    --foreground: #1a1a1a;
    --text-color: #1a1a1a;
}

html.dark {
    --background: #111827;
    --foreground: #f9fafb;
    --text-color: #f9fafb;
}

/* Smooth transition for theme switching */
body, body * {
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

body {
    background: var(--background);
    color: var(--text-color);
    font-family: Arial, Helvetica, sans-serif;
}

h1, h2, h3, h4, p, span, div, label, li, ul, ol {
    color: var(--text-color);
}

/* Markdown Content */
.markdown-content, .markdown-content * {
    color: var(--text-color);
}

.markdown-content h1 {
    font-size: 2em;
    font-weight: bold;
    margin: 0.67em 0;
}

.markdown-content h2 {
    font-size: 1.5em;
    font-weight: bold;
    margin: 0.83em 0;
}

.markdown-content h3 {
    font-size: 1.17em;
    font-weight: bold;
    margin: 1em 0;
}

.markdown-content h4 {
    font-size: 1em;
    font-weight: bold;
    margin: 1.33em 0;
}

.markdown-content p {
    margin: 1em 0;
}

.markdown-content ul {
    list-style-type: disc;
    padding-left: 2em;
    margin: 1em 0;
}

.markdown-content ol {
    list-style-type: decimal;
    padding-left: 2em;
    margin: 1em 0;
}

.markdown-content li {
    margin: 0.25em 0;
}

.markdown-content strong {
    font-weight: bold;
}

.markdown-content em {
    font-style: italic;
}

/* KaTeX Formel-Styling */
.katex {
    font-size: 1.1em !important;
    color: var(--text-color) !important;
}

html.dark .katex * {
    color: var(--text-color) !important;
}

.katex-display {
    margin: 1em 0;
    overflow-x: auto;
    overflow-y: hidden;
}

.katex-display > .katex {
    white-space: nowrap;
}

@media (max-width: 768px) {
    .katex {
        font-size: 1em !important;
    }
}

/* Test Page Specific */
.question-input {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    margin-top: 12px;
    margin-bottom: 24px;
    font-size: 16px;
    color: var(--text-color);
    background: #ffffff;
}

.question-input::placeholder {
    color: #888888;
}

html.dark .question-input {
    background: #374151;
    border-color: #4b5563;
}

.answer-label {
    display: block;
    font-weight: 600;
    color: var(--text-color);
    margin-top: 16px;
}

.question-block {
    margin-bottom: 8px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e5e7eb;
}

html.dark .question-block {
    border-bottom-color: #374151;
}

.timer-warning {
    color: #ef4444;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Einheitliche Schriftgroesse im gesamten Auswertungsbereich */
#evaluationSection {
    font-size: 1.125rem;
    line-height: 1.75rem;
}

#evaluationSection h1,
#evaluationSection h2,
#evaluationSection h3,
#evaluationSection h4 {
    font-size: 1.5rem;
    line-height: 2rem;
    font-weight: 700;
}

/* Auswertungs-Layout: Frage oben, Korrektur darunter */
.evaluation-row {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 2px solid #e5e7eb;
}

html.dark .evaluation-row {
    border-bottom-color: #374151;
}

.question-side {
    min-width: 0;
    overflow-x: auto;
}

.correction-side {
    min-width: 0;
    overflow-x: auto;
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 8px;
    padding: 16px;
}

html.dark .correction-side {
    background: #14532d;
    border-color: #166534;
}

.correction-side.correct {
    background: #f0fdf4;
    border-color: #86efac;
}

.correction-side.partial {
    background: #fefce8;
    border-color: #fde047;
}

.correction-side.wrong {
    background: #fef2f2;
    border-color: #fca5a5;
}

html.dark .correction-side.correct {
    background: #14532d;
    border-color: #166534;
}

html.dark .correction-side.partial {
    background: #422006;
    border-color: #854d0e;
}

html.dark .correction-side.wrong {
    background: #450a0a;
    border-color: #991b1b;
}

/* Kompaktformat: Farbige Icons und Korrekturen */
.eval-correct {
    color: #16a34a;
    font-weight: 600;
}
.eval-wrong {
    color: #dc2626;
    font-weight: 600;
}
.eval-correction {
    color: #dc2626;
}
html.dark .eval-correct {
    color: #4ade80;
}
html.dark .eval-wrong {
    color: #f87171;
}
html.dark .eval-correction {
    color: #f87171;
}

/* Kompakte Absätze innerhalb der Korrektur (Lückentext-Zeilen) */
.correction-side .markdown-content p + p {
    margin-top: 0.15rem;
}

/* Chat-Link pro Aufgabe */
.eval-chat-link {
    display: inline-block;
    margin-top: 8px;
    font-size: 0.85rem;
    color: #6366f1;
    cursor: pointer;
    transition: color 0.15s;
}
.eval-chat-link:hover {
    color: #4f46e5;
    text-decoration: underline;
}
html.dark .eval-chat-link {
    color: #a5b4fc;
}
html.dark .eval-chat-link:hover {
    color: #c7d2fe;
}

.student-answer {
    background: #f3f4f6;
    border-radius: 6px;
    padding: 12px;
    margin-top: 8px;
    font-style: italic;
}

html.dark .student-answer {
    background: #374151;
}

.summary-box {
    background: #eff6ff;
    border: 2px solid #3b82f6;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}

html.dark .summary-box {
    background: #1e3a5f;
    border-color: #2563eb;
}

.grade-display {
    font-size: 2.5em;
    font-weight: bold;
    color: #3b82f6;
}

.topics-box {
    background: #f0fdfa;
    border: 1px solid #5eead4;
    border-radius: 8px;
    padding: 16px;
    margin-top: 24px;
}

html.dark .topics-box {
    background: #042f2e;
    border-color: #0d9488;
}

.recommendations-box {
    background: #faf5ff;
    border: 1px solid #c084fc;
    border-radius: 8px;
    padding: 16px;
    margin-top: 24px;
}

html.dark .recommendations-box {
    background: #3b0764;
    border-color: #7c3aed;
}

/* Vokabeltrainer */
.vocab-card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    padding: 24px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff1f2, #ffe4e6);
    border: 2px solid #fecdd3;
    border-radius: 12px;
    text-align: center;
}

html.dark .vocab-card {
    background: linear-gradient(135deg, #4c0519, #881337);
    border-color: #9f1239;
}

.vocab-stats {
    background: linear-gradient(135deg, #fff1f2, #fce7f3);
    border: 2px solid #f43f5e;
    border-radius: 12px;
    padding: 24px;
}

html.dark .vocab-stats {
    background: linear-gradient(135deg, #4c0519, #831843);
    border-color: #e11d48;
}

.vocab-mistake-row {
    padding: 10px 0;
    border-bottom: 1px solid #e5e7eb;
}

.vocab-mistake-row:last-child {
    border-bottom: none;
}

html.dark .vocab-mistake-row {
    border-bottom-color: #374151;
}

/* Statistik-Icon */
.stats-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.15s;
    color: var(--text-color);
    opacity: 0.5;
}

.stats-icon:hover {
    background: rgba(0, 0, 0, 0.06);
    opacity: 0.8;
}

.stats-icon.active {
    color: #0d9488;
    opacity: 1;
}

html.dark .stats-icon:hover {
    background: rgba(255, 255, 255, 0.08);
}

html.dark .stats-icon.active {
    color: #5eead4;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 9999px;
    border: none;
    background: none;
    cursor: pointer;
    transition: all 0.15s;
    color: var(--text-color);
    opacity: 0.5;
    font-size: 1.1rem;
}

.theme-toggle:hover {
    background: rgba(0, 0, 0, 0.06);
    opacity: 0.8;
}

html.dark .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* Profil-Widget */
.profile-widget {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 9999px;
    text-decoration: none;
    transition: background-color 0.15s;
}

.profile-widget:hover {
    background: rgba(0, 0, 0, 0.06);
}

html.dark .profile-widget:hover {
    background: rgba(255, 255, 255, 0.08);
}

.profile-avatar {
    width: 36px;
    height: 36px;
    border-radius: 9999px;
    object-fit: cover;
    border: 2px solid #e5e7eb;
    flex-shrink: 0;
}

html.dark .profile-avatar {
    border-color: #4b5563;
}

.profile-avatar-fallback {
    width: 36px;
    height: 36px;
    border-radius: 9999px;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 2px solid #d1d5db;
}

html.dark .profile-avatar-fallback {
    background: #374151;
    border-color: #4b5563;
}

.profile-name {
    font-size: 0.875rem;
    font-weight: 500;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-color);
}

/* Fach-Reiter (Profil) */
.subject-tab {
    padding: 10px 16px;
    font-weight: 600;
    font-size: 0.875rem;
    border-bottom: 2px solid transparent;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    cursor: pointer;
    transition: all 0.2s;
    flex: 1;
    text-align: center;
    color: var(--text-color);
    opacity: 0.6;
}

.subject-tab.active {
    color: #0d9488;
    border-bottom-color: #0d9488;
    opacity: 1;
}

.subject-tab:hover:not(.active) {
    opacity: 0.85;
}

html.dark .subject-tab.active {
    color: #5eead4;
    border-bottom-color: #5eead4;
}

#subjectTabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Bild-Upload Komponente */
.image-upload-area {
    margin-top: 8px;
}

.image-upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: 2px dashed #d1d5db;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
    color: var(--text-color);
    opacity: 0.7;
}

.image-upload-btn:hover {
    border-color: #0d9488;
    opacity: 1;
    background: rgba(13, 148, 136, 0.05);
}

.image-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
    padding: 10px 14px;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    font-size: 0.875rem;
}

.upload-thumbnail {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid #d1d5db;
    flex-shrink: 0;
}

.upload-info {
    flex: 1;
    min-width: 0;
}

.upload-filename {
    font-weight: 600;
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.upload-filesize {
    font-size: 0.75rem;
    opacity: 0.6;
}

.upload-remove-btn {
    padding: 4px 10px;
    font-size: 0.75rem;
    color: #ef4444;
    border: 1px solid #fecaca;
    border-radius: 6px;
    background: white;
    cursor: pointer;
    transition: all 0.15s;
    flex-shrink: 0;
}

.upload-remove-btn:hover {
    background: #fef2f2;
    border-color: #ef4444;
}

.upload-error {
    margin-top: 6px;
    padding: 8px 12px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 6px;
    font-size: 0.8rem;
    color: #dc2626;
}

.solution-upload-card {
    max-width: 480px;
    margin: 24px auto;
    padding: 24px;
    border: 2px dashed #d1d5db;
    border-radius: 12px;
    transition: all 0.2s;
}

.solution-upload-card:hover {
    border-color: #0d9488;
    background: rgba(13, 148, 136, 0.03);
}

.solution-upload-card.has-file {
    border-style: solid;
    border-color: #22c55e;
    background: #f0fdf4;
}

html.dark .image-upload-btn {
    border-color: #4b5563;
}

html.dark .image-upload-btn:hover {
    border-color: #5eead4;
    background: rgba(94, 234, 212, 0.05);
}

html.dark .image-preview {
    background: #064e3b33;
    border-color: #065f46;
}

html.dark .upload-remove-btn {
    background: #1f2937;
    border-color: #7f1d1d;
    color: #fca5a5;
}

html.dark .upload-remove-btn:hover {
    background: #450a0a33;
}

html.dark .upload-error {
    background: #450a0a33;
    border-color: #7f1d1d;
    color: #fca5a5;
}

html.dark .solution-upload-card {
    border-color: #4b5563;
}

html.dark .solution-upload-card:hover {
    border-color: #5eead4;
    background: rgba(94, 234, 212, 0.03);
}

html.dark .solution-upload-card.has-file {
    border-color: #16a34a;
    background: #064e3b33;
}

/* Print Header (hidden on screen) */
.print-header {
    display: none;
}

/* Print Styles */
@media print {
    /* === Reset === */
    * {
        color: black !important;
        background: transparent !important;
        box-shadow: none !important;
        text-shadow: none !important;
        transition: none !important;
    }

    body {
        background: white !important;
        color: black !important;
        font-size: 12pt;
        line-height: 1.5;
        margin: 0;
        padding: 0;
    }

    main {
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
        display: block !important;
    }

    /* === Hide app chrome === */
    .screen-header,
    #submitBtn,
    #loading,
    a[href="/"],
    #evaluationSection,
    .timer-warning,
    .image-upload-area,
    .image-upload-btn,
    .solution-upload-card,
    #uploadSheetBtn,
    #inlineUploadArea,
    .print-header-subtitle {
        display: none !important;
    }

    /* === Print Header === */
    .print-header {
        display: block !important;
        margin-bottom: 24pt;
        border-bottom: 2pt solid black;
        padding-bottom: 12pt;
    }

    .print-header-title {
        font-size: 20pt;
        font-weight: bold;
        margin-bottom: 2pt;
    }

    .print-header-subtitle {
        font-size: 11pt;
        color: #555 !important;
        margin-bottom: 12pt;
    }

    .print-header-fields {
        display: flex;
        gap: 40pt;
    }

    .print-header-field {
        display: flex;
        align-items: baseline;
        gap: 8pt;
    }

    .print-header-label {
        font-weight: bold;
        font-size: 11pt;
        white-space: nowrap;
    }

    .print-header-line {
        display: inline-block;
        width: 200pt;
        border-bottom: 1pt solid black;
        height: 1em;
    }

    .print-header-date {
        font-size: 11pt;
    }

    /* === Test content area === */
    #testSection {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
        width: 100% !important;
    }

    #testContent {
        display: block !important;
    }

    /* === Question blocks === */
    .question-block {
        page-break-inside: avoid;
        break-inside: avoid;
        border-bottom: none !important;
        margin-bottom: 0;
        padding-bottom: 0;
    }

    /* Replace textarea with lined answer box */
    .question-input {
        display: block !important;
        visibility: visible !important;
        border: 1.5pt solid black !important;
        border-radius: 0 !important;
        background: white !important;
        min-height: 100pt;
        width: 100% !important;
        padding: 8pt !important;
        margin-top: 6pt !important;
        margin-bottom: 16pt !important;
        font-size: 0 !important;
        color: transparent !important;
        page-break-inside: avoid;
        break-inside: avoid;
        /* Lined background for handwriting */
        background-image: repeating-linear-gradient(
            to bottom,
            transparent,
            transparent 19pt,
            #ccc 19pt,
            #ccc 20pt
        ) !important;
        background-color: white !important;
    }

    .question-input::placeholder {
        color: transparent !important;
        font-size: 0 !important;
    }

    .answer-label {
        font-weight: bold !important;
        font-size: 11pt;
        margin-top: 8pt;
    }

    /* === Page break control === */
    h1, h2, h3, h4, strong, .answer-label {
        page-break-after: avoid;
        break-after: avoid;
    }

    .markdown-content p,
    .markdown-content ul,
    .markdown-content ol {
        orphans: 3;
        widows: 3;
    }

    /* === KaTeX in print === */
    .katex {
        font-size: 1.1em !important;
        color: black !important;
    }

    .katex * {
        color: black !important;
    }

    .katex-display {
        overflow: visible !important;
        page-break-inside: avoid;
        break-inside: avoid;
    }

    /* === Markdown content for print === */
    .markdown-content,
    .markdown-content * {
        color: black !important;
    }

    /* === Links === */
    a {
        text-decoration: none !important;
    }

    /* === Page footer with page numbers === */
    @page {
        margin: 2cm;
        @bottom-center {
            content: "Seite " counter(page) " von " counter(pages);
            font-size: 9pt;
        }
    }
}

/* =============================================================================
   ADMIN BEREICH - Eigenes dunkles Theme
   ============================================================================= */

.admin-body {
    background: #0f172a;
    color: #e2e8f0;
}

.admin-text {
    color: #e2e8f0;
}

.admin-text-muted {
    color: #94a3b8;
}

.admin-card {
    background: #1e293b;
    border: 1px solid #334155;
}

.admin-card:hover {
    border-color: #475569;
}

.admin-input {
    background: #1e293b;
    border: 1px solid #334155;
    color: #e2e8f0;
    transition: border-color 0.2s;
}

.admin-input:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.admin-input::placeholder {
    color: #64748b;
}

/* =============================================================================
   GESPEICHERTE TESTS
   ============================================================================= */

.saved-test-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    margin-bottom: 10px;
    transition: border-color 0.15s;
}

.saved-test-card:hover {
    border-color: #0d9488;
}

html.dark .saved-test-card {
    background: #1f2937;
    border-color: #374151;
}

html.dark .saved-test-card:hover {
    border-color: #5eead4;
}

/* Modal Overlay */
.saved-test-modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.saved-test-modal-inner {
    background: #ffffff;
    border-radius: 12px;
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
    position: relative;
}

html.dark .saved-test-modal-inner {
    background: #1f2937;
    color: #e5e7eb;
}

/* ============================================================================
   Beta-Banner (U-BT-1)
   ============================================================================ */
.beta-banner {
    position: sticky;
    top: 0;
    z-index: 50;
    background: #fffbeb;
    border-bottom: 1px solid #fcd34d;
    height: 36px;
    font-size: 0.875rem;
}
html.dark .beta-banner {
    background: rgba(120, 53, 15, 0.3);
    border-bottom-color: rgba(251, 191, 36, 0.3);
}
.beta-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 0 12px;
    gap: 8px;
}
.beta-banner-text-short { display: none; }
.beta-banner-link {
    color: #d97706;
    font-weight: 600;
    text-decoration: underline;
}
html.dark .beta-banner-link { color: #fbbf24; }
.beta-banner-close {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.6;
    color: var(--text-color);
    padding: 0 4px;
}
.beta-banner-close:hover { opacity: 1; }
@media (max-width: 640px) {
    .beta-banner-text-full { display: none; }
    .beta-banner-text-short { display: inline; }
}

/* ============================================================================
   Bug-Report FAB + Modal (U-BT-3)
   ============================================================================ */
.bug-report-fab {
    position: fixed;
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #ef4444;
    color: #fff;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background 0.2s;
}
.bug-report-fab:hover {
    background: #dc2626;
    transform: scale(1.1);
}
.bug-report-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}
.bug-report-modal {
    background: #fff;
    border-radius: 12px;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
    position: relative;
}
html.dark .bug-report-modal {
    background: #1f2937;
    color: #e5e7eb;
}

/* ============================================================================
   Content-Feedback Buttons (U-BT-4)
   ============================================================================ */
.content-feedback-btns {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}
.content-feedback-btns button {
    background: none;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    padding: 4px 10px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.15s, border-color 0.15s;
}
html.dark .content-feedback-btns button {
    border-color: #4b5563;
}
.content-feedback-btns button:hover {
    background: #f3f4f6;
}
html.dark .content-feedback-btns button:hover {
    background: #374151;
}
.content-feedback-btns button.selected-up {
    background: #d1fae5;
    border-color: #10b981;
    color: #065f46;
}
html.dark .content-feedback-btns button.selected-up {
    background: rgba(16, 185, 129, 0.2);
    border-color: #10b981;
    color: #6ee7b7;
}
.content-feedback-btns button.selected-down {
    background: #fee2e2;
    border-color: #ef4444;
    color: #991b1b;
}
html.dark .content-feedback-btns button.selected-down {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
    color: #fca5a5;
}
.content-feedback-btns button:disabled {
    cursor: default;
    opacity: 0.7;
}
.content-feedback-comment {
    margin-top: 6px;
}
.content-feedback-comment textarea {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.8rem;
    resize: none;
    background: var(--background);
    color: var(--text-color);
}
html.dark .content-feedback-comment textarea {
    border-color: #4b5563;
}

/* ============================================================================
   FAQ/Hilfe Accordion (U-BT-5)
   ============================================================================ */
.accordion-header {
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    font-weight: 600;
    border-radius: 8px;
    transition: background 0.15s;
}
.accordion-header:hover {
    background: #f3f4f6;
}
html.dark .accordion-header:hover {
    background: #374151;
}
.accordion-header .chevron {
    transition: transform 0.2s;
}
.accordion-header.open .chevron {
    transform: rotate(180deg);
}
.accordion-body {
    padding: 8px 16px 16px;
    font-size: 0.9rem;
    line-height: 1.6;
}