/* KartApp - Georgian Learning PWA Styles */

:root {
    /* Color Palette - Warm earth tones inspired by Georgian culture */
    --primary: #8B4513;
    --primary-rgb: 139, 69, 19;
    --primary-dark: #6B3410;
    --primary-light: #A0522D;
    --secondary: #D4A574;
    --accent: #C9302C;

    --bg-main: #FAF8F5;
    --bg-card: #FFFFFF;
    --bg-hover: #F5F0EB;

    --text-primary: #2C2416;
    --text-secondary: #5C5347;
    --text-muted: #8B8379;

    --border: #E5DED5;
    --border-light: #F0EBE5;

    --success: #2E7D32;
    --success-bg: #E8F5E9;
    --error: #C62828;
    --error-bg: #FFEBEE;
    --warning: #F57C00;
    --warning-bg: #FFF3E0;
    --info: #1565C0;
    --info-bg: #E3F2FD;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;

    --font-geo: 'Noto Sans Georgian', sans-serif;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --transition: 0.2s ease;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

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

#app {
    max-width: 600px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--bg-main);
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 600;
}

.logo-geo {
    font-family: var(--font-geo);
    color: var(--primary);
    font-weight: 700;
}

.logo-text {
    color: var(--text-primary);
}

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.btn-icon svg {
    width: 22px;
    height: 22px;
}

.btn-icon.hidden {
    visibility: hidden;
}

/* Main Content */
.main-content {
    padding: 20px;
    padding-bottom: 40px;
}

/* Views */
.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Welcome Section */
.welcome-section {
    text-align: center;
    margin-bottom: 24px;
}

.welcome-section h2 {
    font-family: var(--font-geo);
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.welcome-text {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Progress Overview */
.progress-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 24px;
}

.progress-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-sm);
}

.progress-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-dark);
}

.progress-icon svg {
    width: 20px;
    height: 20px;
}

.progress-info {
    display: flex;
    flex-direction: column;
}

.progress-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.progress-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Navigation Cards */
.main-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nav-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    width: 100%;
}

.nav-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.nav-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.nav-icon svg {
    width: 24px;
    height: 24px;
}

.nav-icon.alphabet-icon {
    font-family: var(--font-geo);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.nav-content {
    flex: 1;
}

.nav-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.nav-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.nav-arrow {
    color: var(--text-muted);
}

.nav-arrow svg {
    width: 20px;
    height: 20px;
}

/* Section Header */
.section-header {
    margin-bottom: 24px;
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Info Box */
.info-box {
    background: var(--info-bg);
    border-left: 4px solid var(--info);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 24px;
}

.info-box h4 {
    color: var(--info);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.info-box ul {
    margin-left: 20px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.info-box li {
    margin-bottom: 4px;
}

/* Alphabet Grid */
.alphabet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: 10px;
}

.letter-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 12px 8px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.letter-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.letter-card.learned {
    border-color: var(--success);
    background: var(--success-bg);
}

.letter-geo {
    font-family: var(--font-geo);
    font-size: 2rem;
    font-weight: 500;
    color: var(--primary);
    display: block;
    line-height: 1.2;
}

.letter-translit {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Letter Detail */
.letter-detail {
    text-align: center;
}

.letter-display {
    font-family: var(--font-geo);
    font-size: 8rem;
    font-weight: 500;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 16px;
}

.letter-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.letter-info-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.letter-info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 4px;
}

.letter-info-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.audio-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 24px;
}

.audio-btn:hover {
    background: var(--primary-dark);
}

.audio-btn svg {
    width: 20px;
    height: 20px;
}

.letter-examples {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: left;
    box-shadow: var(--shadow-sm);
}

.letter-examples h4 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.example-word {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-light);
}

.example-word:last-child {
    border-bottom: none;
}

.example-geo {
    font-family: var(--font-geo);
    font-size: 1.25rem;
    color: var(--primary);
    min-width: 100px;
}

.example-translit {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.example-meaning {
    color: var(--text-secondary);
    margin-left: auto;
}

/* Units List */
.units-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.unit-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.unit-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.unit-card.locked {
    opacity: 0.6;
    cursor: not-allowed;
}

.unit-card.completed {
    border-color: var(--success);
}

.unit-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.unit-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.unit-card.completed .unit-number {
    background: var(--success);
}

.unit-card.locked .unit-number {
    background: var(--text-muted);
}

.unit-title {
    flex: 1;
}

.unit-title h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.unit-title p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.unit-progress {
    height: 4px;
    background: var(--border-light);
    border-radius: 2px;
    overflow: hidden;
}

.unit-progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.unit-card.completed .unit-progress-bar {
    background: var(--success);
}

/* Lesson Content */
.lesson-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.lesson-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.lesson-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.lesson-header p {
    color: var(--text-secondary);
}

.lesson-section {
    margin-bottom: 24px;
}

.lesson-section h3 {
    font-size: 1.125rem;
    color: var(--primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.lesson-section p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.concept-highlight {
    background: var(--warning-bg);
    border-left: 4px solid var(--warning);
    padding: 16px;
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

.concept-highlight h4 {
    color: var(--warning);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.lesson-examples {
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    padding: 16px;
}

.lesson-example {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-light);
}

.lesson-example:last-child {
    border-bottom: none;
}

.example-georgian {
    font-family: var(--font-geo);
    font-size: 1.5rem;
    color: var(--primary);
}

.example-details {
    display: flex;
    gap: 16px;
    font-size: 0.875rem;
}

.example-details .translit {
    color: var(--text-muted);
}

.example-details .meaning {
    color: var(--text-secondary);
}

.lesson-nav {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.btn {
    flex: 1;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-secondary:hover {
    background: var(--border-light);
}

/* Exercise Container */
.exercise-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.exercise-progress {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.exercise-progress-bar {
    flex: 1;
    height: 6px;
    background: var(--border-light);
    border-radius: 3px;
    overflow: hidden;
}

.exercise-progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.exercise-progress-text {
    font-size: 0.875rem;
    color: var(--text-muted);
    min-width: 40px;
}

.exercise-question {
    margin-bottom: 24px;
}

.exercise-question h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.exercise-prompt {
    font-family: var(--font-geo);
    font-size: 2rem;
    color: var(--primary);
    text-align: center;
    padding: 24px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
}

.exercise-prompt-translit {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.exercise-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 24px;
}

.option-btn {
    padding: 16px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.option-btn:hover:not(.selected):not(.correct):not(.incorrect) {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.option-btn.selected {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.option-btn.correct {
    border-color: var(--success);
    background: var(--success-bg);
}

.option-btn.incorrect {
    border-color: var(--error);
    background: var(--error-bg);
}

.option-btn .option-geo {
    font-family: var(--font-geo);
    font-size: 1.25rem;
    color: var(--primary);
}

/* Feedback */
.feedback {
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    display: none;
}

.feedback.show {
    display: block;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.feedback.correct {
    background: var(--success-bg);
    border: 1px solid var(--success);
}

.feedback.incorrect {
    background: var(--error-bg);
    border: 1px solid var(--error);
}

.feedback h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.feedback.correct h4 {
    color: var(--success);
}

.feedback.incorrect h4 {
    color: var(--error);
}

.feedback p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Reorder Exercise */
.reorder-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 60px;
    padding: 16px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.reorder-word {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-geo);
    font-size: 1.125rem;
    color: var(--primary);
    transition: var(--transition);
}

.reorder-word:hover {
    border-color: var(--primary);
}

.reorder-word.placed {
    opacity: 0.4;
}

.reorder-answer {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 60px;
    padding: 16px;
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

/* Vocabulary List */
.filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-select {
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    font-size: 0.9375rem;
    color: var(--text-primary);
    cursor: pointer;
}

.btn-transliteration {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.toggle-switch {
    width: 36px;
    height: 20px;
    background: var(--border);
    border-radius: 10px;
    position: relative;
    transition: var(--transition);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: var(--transition);
}

.toggle-switch.active {
    background: var(--primary);
}

.toggle-switch.active::after {
    left: 18px;
}

.vocabulary-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.vocab-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.vocab-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.vocab-card.due {
    border-left: 3px solid var(--warning);
}

.vocab-mastery-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.vocab-main {
    min-width: 0;
    flex-shrink: 0;
}

.vocab-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.vocab-geo {
    font-family: var(--font-geo);
    font-size: 1.25rem;
    color: var(--primary);
    display: block;
}

.vocab-translit {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.vocab-meaning {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.vocab-mastery-label {
    font-size: 0.6875rem;
    font-weight: 500;
}

.vocab-audio {
    padding: 8px;
    background: var(--bg-hover);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.vocab-audio:hover {
    background: var(--primary);
    color: white;
}

.vocab-audio svg {
    width: 18px;
    height: 18px;
}

/* Grammar List */
.grammar-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.grammar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.grammar-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.grammar-card h3 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.grammar-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Grammar Detail */
.grammar-detail {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.grammar-detail h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.grammar-detail h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-top: 24px;
    margin-bottom: 12px;
}

.grammar-detail p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.grammar-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.grammar-table th,
.grammar-table td {
    padding: 12px;
    text-align: left;
    border: 1px solid var(--border-light);
}

.grammar-table th {
    background: var(--bg-hover);
    font-weight: 600;
    color: var(--text-primary);
}

.grammar-table td {
    color: var(--text-secondary);
}

.grammar-table .geo {
    font-family: var(--font-geo);
    color: var(--primary);
    font-size: 1.125rem;
}

/* Review Options */
.review-options {
    display: grid;
    gap: 12px;
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.review-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.review-card h3 {
    color: var(--text-primary);
    margin-bottom: 4px;
}

.review-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Settings */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

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

.setting-info h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.setting-info p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.switch {
    position: relative;
    width: 48px;
    height: 28px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--border);
    border-radius: 14px;
    transition: var(--transition);
}

.slider::before {
    position: absolute;
    content: '';
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

input:checked + .slider {
    background: var(--primary);
}

input:checked + .slider::before {
    transform: translateX(20px);
}

.btn-danger {
    padding: 10px 20px;
    background: var(--error);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-danger:hover {
    background: #B71C1C;
}

.about-section {
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.about-section h3 {
    color: var(--text-primary);
    margin-bottom: 12px;
}

.about-section p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 8px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ========== Onboarding ========== */
.onboarding-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-main);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.onboarding-overlay.hidden {
    display: none;
}

.onboarding-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 500px;
    margin: 0 auto;
    padding: 40px 24px;
    width: 100%;
}

.onboarding-step {
    display: none;
    flex-direction: column;
    align-items: center;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

.onboarding-step.active {
    display: flex;
    flex: 1;
}

.onboarding-illustration {
    margin-bottom: 32px;
}

.geo-big {
    font-family: var(--font-geo);
    font-size: 3rem;
    font-weight: 600;
    color: var(--primary);
    display: block;
    padding: 32px;
    background: linear-gradient(135deg, var(--secondary) 0%, #E8DDD0 100%);
    border-radius: var(--radius-lg);
}

.onboarding-step h2 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.onboarding-step > p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 32px;
    max-width: 360px;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

/* Onboarding Options */
.onboarding-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    margin-bottom: 24px;
}

.onboarding-option {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    width: 100%;
}

.onboarding-option:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.onboarding-option.selected {
    border-color: var(--primary);
    background: var(--secondary);
}

.onboarding-option .option-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.onboarding-option .option-icon svg {
    width: 24px;
    height: 24px;
}

.onboarding-option .option-icon.geo-letters {
    font-family: var(--font-geo);
    font-size: 1rem;
    font-weight: 600;
}

.onboarding-option h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.onboarding-option p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0;
}

/* Goals */
.onboarding-goals {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    margin-bottom: 32px;
}

.goal-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.goal-option:hover {
    border-color: var(--primary);
}

.goal-option input {
    display: none;
}

.goal-check {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.goal-option input:checked + .goal-check {
    background: var(--primary);
    border-color: var(--primary);
}

.goal-option input:checked + .goal-check::after {
    content: '';
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    margin-bottom: 2px;
}

.goal-option span:last-child {
    color: var(--text-primary);
    font-size: 0.9375rem;
}

/* Test Info */
.test-info {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 32px;
}

.test-info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.test-info-item svg {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

.onboarding-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 300px;
}

/* Placement Test */
.placement-test {
    width: 100%;
    text-align: left;
}

.placement-test h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-align: center;
}

.placement-question {
    margin-bottom: 24px;
}

.placement-prompt {
    font-family: var(--font-geo);
    font-size: 2.5rem;
    color: var(--primary);
    text-align: center;
    padding: 24px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.placement-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.placement-option {
    padding: 14px 16px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    text-align: left;
}

.placement-option:hover {
    border-color: var(--primary);
}

.placement-option.selected {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.placement-progress {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
}

.placement-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
    transition: var(--transition);
}

.placement-dot.active {
    background: var(--primary);
}

.placement-dot.done {
    background: var(--success);
}

/* Result */
.onboarding-result {
    text-align: center;
}

.result-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--success-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.result-icon svg {
    width: 40px;
    height: 40px;
    color: var(--success);
}

.result-level {
    margin-bottom: 16px;
}

.level-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.result-level p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.result-desc {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.result-summary {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 32px;
    text-align: left;
}

.result-summary h4 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-summary ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.result-summary li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.result-summary li svg {
    width: 18px;
    height: 18px;
    color: var(--success);
}

/* Progress Dots */
.onboarding-progress {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 20px;
}

.progress-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    transition: var(--transition);
}

.progress-dot.active {
    background: var(--primary);
    width: 24px;
    border-radius: 4px;
}

.progress-dot.done {
    background: var(--primary);
}

/* ========== Daily Words Section ========== */
.daily-words-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 24px;
    color: white;
}

.daily-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.daily-title h3 {
    font-size: 1.125rem;
    margin-bottom: 4px;
}

.daily-theme {
    font-size: 0.8125rem;
    opacity: 0.85;
    background: rgba(255,255,255,0.2);
    padding: 2px 10px;
    border-radius: 12px;
}

.daily-count {
    background: rgba(255,255,255,0.2);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
}

.daily-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.daily-word-preview {
    background: rgba(255,255,255,0.15);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-geo);
    font-size: 1rem;
}

.daily-word-preview.learned {
    background: rgba(255,255,255,0.3);
    text-decoration: line-through;
    opacity: 0.7;
}

.daily-loading {
    opacity: 0.7;
    font-size: 0.875rem;
}

.daily-start-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: white;
    color: var(--primary);
}

.daily-start-btn:hover {
    background: var(--bg-hover);
}

.daily-start-btn svg {
    width: 20px;
    height: 20px;
}

.daily-completed {
    text-align: center;
    padding: 12px;
    background: rgba(255,255,255,0.15);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
}

/* ========== Daily Article Section ========== */
.daily-article-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.article-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.article-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.article-badge svg {
    width: 16px;
    height: 16px;
}

.article-source {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.article-content {
    margin-bottom: 20px;
}

.article-loading {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    margin: 0 auto 12px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.article-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
    font-family: var(--font-geo);
    line-height: 1.5;
}

.article-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text);
    font-family: var(--font-geo);
}

.article-text .vocab-highlight {
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.15) 0%, rgba(var(--primary-rgb), 0.25) 100%);
    color: var(--primary-dark);
    padding: 2px 6px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    border-bottom: 2px solid var(--primary);
}

.article-text .vocab-highlight:hover {
    background: var(--primary);
    color: white;
}

.article-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    font-size: 0.8125rem;
    color: var(--primary);
    text-decoration: none;
}

.article-link:hover {
    text-decoration: underline;
}

.article-link svg {
    width: 14px;
    height: 14px;
}

.article-vocabulary {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
}

.article-vocabulary h4 {
    font-size: 0.9375rem;
    margin-bottom: 12px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.article-vocabulary h4::before {
    content: "";
    display: block;
    width: 4px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
}

.vocab-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vocab-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.vocab-item-word {
    font-family: var(--font-geo);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-dark);
    min-width: 100px;
}

.vocab-item-info {
    flex: 1;
}

.vocab-item-translit {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.vocab-item-meaning {
    font-size: 0.9375rem;
    color: var(--text);
}

.vocab-item-context {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-style: italic;
    font-family: var(--font-geo);
}

.vocab-item-level {
    font-size: 0.6875rem;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bg);
    color: var(--text-muted);
}

.article-learn-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.article-learn-btn svg {
    width: 20px;
    height: 20px;
}

.article-error {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-muted);
}

.article-error svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* Word Tooltip */
.word-tooltip {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    min-width: 150px;
    animation: tooltipFadeIn 0.2s ease;
}

@keyframes tooltipFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tooltip-word {
    font-family: var(--font-geo);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 4px;
}

.tooltip-translit {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.tooltip-meaning {
    font-size: 0.9375rem;
    color: var(--text);
    font-weight: 500;
}

/* ========== Flashcard System ========== */
.flashcard-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
}

.flashcard-progress {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.flashcard-progress-bar {
    flex: 1;
    height: 6px;
    background: var(--border-light);
    border-radius: 3px;
    overflow: hidden;
}

.flashcard-progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.flashcard-progress-text {
    font-size: 0.875rem;
    color: var(--text-muted);
    min-width: 40px;
}

.flashcard-card {
    perspective: 1000px;
    margin-bottom: 24px;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 280px;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    cursor: pointer;
}

.flashcard-card.flipped .flashcard-inner {
    transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    box-shadow: var(--shadow-md);
}

.flashcard-front {
    background: var(--bg-card);
    border: 2px solid var(--border-light);
}

.flashcard-back {
    background: linear-gradient(135deg, var(--secondary) 0%, #E8DDD0 100%);
    transform: rotateY(180deg);
}

.flashcard-geo {
    font-family: var(--font-geo);
    font-size: 3rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 12px;
    text-align: center;
}

.flashcard-translit {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.flashcard-audio-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-hover);
    border: none;
    cursor: pointer;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.flashcard-audio-btn svg {
    width: 24px;
    height: 24px;
}

.flashcard-meaning {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 12px;
}

.flashcard-theme {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    background: rgba(0,0,0,0.1);
    padding: 4px 12px;
    border-radius: 12px;
}

.flashcard-hint {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-top: -12px;
    margin-bottom: 24px;
}

.flashcard-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.flashcard-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: var(--transition);
}

.flashcard-action-btn svg {
    width: 32px;
    height: 32px;
}

/* SRS 4-button layout */
.flashcard-actions.srs-actions {
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 8px;
}

.flashcard-actions.srs-actions .flashcard-action-btn {
    padding: 10px 6px;
    font-size: 0.8125rem;
}

.flashcard-actions.srs-actions .flashcard-action-btn svg {
    width: 24px;
    height: 24px;
}

.srs-interval {
    font-size: 0.6875rem;
    opacity: 0.7;
    font-weight: 400;
}

.flashcard-action-btn.again {
    background: var(--error-bg);
    color: var(--error);
}

.flashcard-action-btn.again:hover {
    background: var(--error);
    color: white;
}

.flashcard-action-btn.hard {
    background: var(--warning-bg);
    color: var(--warning);
}

.flashcard-action-btn.hard:hover {
    background: var(--warning);
    color: white;
}

.flashcard-action-btn.good {
    background: var(--success-bg);
    color: var(--success);
}

.flashcard-action-btn.good:hover {
    background: var(--success);
    color: white;
}

.flashcard-action-btn.easy {
    background: var(--info-bg);
    color: var(--info);
}

.flashcard-action-btn.easy:hover {
    background: var(--info);
    color: white;
}

/* Legacy compat */
.flashcard-action-btn.wrong {
    background: var(--error-bg);
    color: var(--error);
}

.flashcard-action-btn.correct {
    background: var(--success-bg);
    color: var(--success);
}

/* Flashcard Results */
.flashcard-results {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

.results-header {
    margin-bottom: 24px;
}

.results-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.results-header p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.results-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
    margin-bottom: 4px;
}

.stat-value.correct {
    color: var(--success);
}

.stat-value.wrong {
    color: var(--error);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.results-words {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
    text-align: left;
}

.results-word {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
}

.results-word:last-child {
    border-bottom: none;
}

.results-word-status {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.results-word-status.correct {
    background: var(--success-bg);
    color: var(--success);
}

.results-word-status.wrong {
    background: var(--error-bg);
    color: var(--error);
}

.results-word-status svg {
    width: 14px;
    height: 14px;
}

.results-word-info {
    flex: 1;
}

.results-word-geo {
    font-family: var(--font-geo);
    color: var(--primary);
    font-size: 1.125rem;
}

.results-word-meaning {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.results-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Level indicator for vocabulary */
.level-badge-small {
    font-size: 0.625rem;
    padding: 2px 6px;
    border-radius: 8px;
    background: var(--bg-hover);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.level-badge-small.beginner {
    background: var(--success-bg);
    color: var(--success);
}

.level-badge-small.elementary {
    background: var(--info-bg);
    color: var(--info);
}

.level-badge-small.intermediate {
    background: var(--warning-bg);
    color: var(--warning);
}

/* Unit level filtering */
.unit-card.below-level {
    opacity: 0.5;
}

.unit-card.below-level .unit-number {
    background: var(--text-muted);
}

.unit-card.below-level::after {
    content: 'Niveau acquis';
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 0.625rem;
    background: var(--success);
    color: white;
    padding: 2px 8px;
    border-radius: 8px;
}

.unit-card {
    position: relative;
}

/* SRS Review Section */
.srs-review-section {
    margin-bottom: 20px;
}

.srs-review-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--warning-bg) 0%, #FFF8E1 100%);
    border: 1px solid #FFE082;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
}

.srs-review-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.srs-review-icon svg {
    width: 32px;
    height: 32px;
    color: var(--warning);
}

.srs-review-info {
    flex: 1;
}

.srs-review-info h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.srs-review-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.srs-review-info #srsReviewCount {
    font-weight: 700;
    color: var(--warning);
}

.srs-review-arrow svg {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 480px) {
    .main-content {
        padding: 16px;
    }

    .welcome-section h2 {
        font-size: 2rem;
    }

    .progress-overview {
        grid-template-columns: 1fr;
    }

    .letter-display {
        font-size: 6rem;
    }

    .exercise-prompt {
        font-size: 1.5rem;
    }

    .flashcard-actions.srs-actions {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .flashcard-actions.srs-actions .flashcard-action-btn {
        padding: 10px 8px;
    }
}

/* Hide transliteration when disabled */
body.no-translit .letter-translit,
body.no-translit .vocab-translit,
body.no-translit .exercise-prompt-translit,
body.no-translit .example-translit {
    display: none;
}

/* Print styles */
@media print {
    .header,
    .btn,
    .audio-btn,
    .nav-arrow {
        display: none;
    }
}