:root {
    --primary-color: #785D3E;
    --secondary-color: #f59e0b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --surface: #2D363E;
    --text-primary: #E5E0D8;
    --text-secondary: #d1d1d1;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


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


.hidden {
    display: none !important;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, rgb(36, 37, 37) 0%, rgb(36, 37, 37) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}


.header {
    text-align: center;
    padding: 2rem;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}


.screen {
    flex: 1;
    display: none;
    padding: 0 2rem 2rem;
}

.screen.active {
    display: block;
}


.selection-container {
    max-width: 600px;
    margin: 0 auto;
}

.selection-container h2 {
    text-align: center;
    color: white;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    font-weight: 600;
}

.type-selection {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.type-btn {
    background: var(--surface);
    border: none;
    border-radius: var(--border-radius);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.type-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.type-btn.special-mode {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border: 2px solid #f87171;
}

.type-btn.special-mode-2 {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    border: 2px solid #2563eb;
}

.type-btn.special-mode-3 {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
    border: 2px solid #a78bfa;
}

.type-btn.special-mode:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    border-color: #ef4444;
}

.type-btn.special-mode-2:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
    border-color: #3b82f6;
}

.type-btn.special-mode-3:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    border-color: #8b5cf6;
}

.type-btn.special-mode-2.active {
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
    color: white;
} 

.type-btn.special-mode-3.active {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    color: white;
}

.type-btn span {
    display: block;
    font-size: 0.9rem;
    font-weight: 400;
    margin-top: 0.5rem;
    opacity: 0.8;
}

.filters {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 1.5rem 0;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow);
    max-height: 80vh;
    overflow-y: auto;
}

.filters.hidden {
    display: none;
}

.filter-section {
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    background: var(--background);
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.filter-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.select-all-container {
    font-size: 0.9rem;
}

.checkbox-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    max-height: 200px;
    overflow-y: auto;
    padding: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    background: white;
    border: 1px solid var(--border-color);
}

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

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    width: 18px;
    height: 18px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-right: 0.75rem;
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: -2px;
    left: 2px;
    color: white;
    font-size: 14px;
    font-weight: bold;
}

.checkbox-label input[type="checkbox"]:indeterminate + .checkmark {
    background: var(--warning-color);
    border-color: var(--warning-color);
}

.checkbox-label input[type="checkbox"]:indeterminate + .checkmark::after {
    content: '−';
    position: absolute;
    top: -4px;
    left: 2px;
    color: white;
    font-size: 16px;
    font-weight: bold;
}

.checkbox-label:hover .checkmark {
    border-color: white;
    background: rgba(255, 255, 255, 0.2);
}

.checkbox-label:hover input[type="checkbox"]:checked + .checkmark {
    background: white;
    border-color: white;
}

.checkbox-label:hover input[type="checkbox"]:checked + .checkmark::after {
    color: var(--surface);
}

.selection-summary {
    background: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin: 1.5rem 0;
    text-align: center;
}

.summary-text {
    font-weight: 500;
}

.filter-group {
    margin-bottom: 1.5rem;
}

.filter-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.filter-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    transition: var(--transition);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.start-btn {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
}

.start-btn:hover {
    transform: translateY(-1px);
}

.start-btn:disabled {
    background: rgba(120, 93, 62, 0.5);
    cursor: not-allowed;
    opacity: 0.6;
}

.start-btn:disabled:hover {
    background: rgba(120, 93, 62, 0.5);
    transform: none;
}


.revision-container {
    max-width: 800px;
    margin: 0 auto;
}

.progress-bar {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    height: 8px;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.progress-fill {
    background: var(--success-color);
    height: 100%;
    border-radius: 20px;
    transition: width 0.5s ease;
    width: 0%;
}

#progress-text {
    position: absolute;
    top: -25px;
    right: 0;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
}

.card-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.flashcard {
    background: var(--surface);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: var(--transition);
    cursor: pointer;
}

.flashcard:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.card-front, .card-back {
    padding: 2rem;
    text-align: center;
    width: 100%;
}

.card-back.hidden {
    display: none;
}

.arabic-text {
    font-family: 'Amiri', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.4;
    direction: rtl;
}

#translation-text {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

#additional-info {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

#card-type {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

#difficulty-indicator {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.controls {
    text-align: center;
    margin-bottom: 2rem;
}

.control-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin: 0 0.5rem;
}

.control-btn:hover {
    transform: translateY(-1px);
}

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

.control-btn.primary:hover {
    background: #d97706;
}

.control-btn.special {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    border: 1px solid #f87171;
}

.control-btn.special:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    border-color: #ef4444;
}

.answer-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.answer-buttons.hidden {
    display: none;
}

.answer-btn {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.answer-btn.incorrect {
    background: #fef2f2;
    color: var(--error-color);
    border: 2px solid #fecaca;
}

.answer-btn.incorrect:hover {
    background: var(--error-color);
    color: white;
}

.answer-btn.difficult {
    background: #fffbeb;
    color: var(--warning-color);
    border: 2px solid #fed7aa;
}

.answer-btn.difficult:hover {
    background: var(--warning-color);
    color: white;
}

.answer-btn.correct {
    background: #f0fdf4;
    color: var(--success-color);
    border: 2px solid #bbf7d0;
}

.answer-btn.correct:hover {
    background: var(--success-color);
    color: white;
}

.answer-btn.easy {
    background: #f0f9ff;
    color: var(--primary-color);
    border: 2px solid #bfdbfe;
}

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

.session-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
    color: white;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 0.25rem;
}

.stat span:last-child {
    font-size: 1.5rem;
    font-weight: 700;
}

.back-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}


.results-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.results-container h2 {
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-size: 2rem;
}

.final-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--background);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
}

.stat-card .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.stat-card .stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}


.mode-selector {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.mode-toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.mode-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.mode-toggle input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    width: 50px;
    height: 24px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    position: relative;
    transition: var(--transition);
    margin-right: 1rem;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    top: 2px;
    left: 2px;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.mode-toggle input[type="checkbox"]:checked + .toggle-slider {
    background: var(--success-color);
}

.mode-toggle input[type="checkbox"]:checked + .toggle-slider::before {
    transform: translateX(26px);
}

.mode-label {
    color: white;
    font-weight: 500;
    font-size: 0.95rem;
}

.mode-toggle input[type="checkbox"]:checked ~ .mode-label {
    color: var(--success-color);
}


.card-mode-indicator {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--secondary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.card-mode-indicator.reverse {
    background: var(--success-color);
}


.card-repeat-indicator {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--warning-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    animation: pulse 2s infinite;
}


.card-intensive-indicator {
    position: absolute;
    top: 3.5rem;
    right: 1rem;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #f87171;
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 5px #ef4444;
    }
    to {
        box-shadow: 0 0 15px #ef4444;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}


@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.flashcard {
    animation: fadeIn 0.5s ease;
}


.stats-section {
    background: var(--primary-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.stats-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
   
}

.stats-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.stats-toggle-btn {
    background: var(--primary-color);
    border: white 2px solid;
    box-shadow: var(--shadow);
    color: white;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.stats-toggle-btn:hover {
    background: #6b5b4f;
    transform: translateY(-1px);
}

.stats-content {
    transition: var(--transition);
    overflow: hidden;
}

.stats-content.hidden {
    display: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
    margin-top: 1.5rem;
}

.stat-card {
    background: var(--surface);
    border: 1px solid rgba(120, 93, 62, 0.2);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: 50%;
    color: white;
}

.stat-info {
    flex: 1;
}

.stat-number {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

.stats-actions {
    display: flex;
    justify-content: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(120, 93, 62, 0.2);
}

.reset-stats-btn {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid #f87171;
}

.reset-stats-btn:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    border-color: #ef4444;
    transform: translateY(-1px);
}


@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .type-selection {
        grid-template-columns: 1fr;
    }
    
    .arabic-text {
        font-size: 2rem;
    }
    
    #translation-text {
        font-size: 1.5rem;
    }
    
    .answer-buttons {
        grid-template-columns: 1fr 1fr;
    }
    
    .session-info {
        flex-direction: column;
        gap: 1rem;
    }
    
    .final-stats {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1rem;
    }
    
    .screen {
        padding: 0 1rem 1rem;
    }
    
    .arabic-text {
        font-size: 1.8rem;
    }
    
    .answer-buttons {
        grid-template-columns: 1fr;
    }
}


.filter-header-main {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--primary-color);
}

.filter-header-main h3 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1.4rem;
    font-weight: 600;
}

.hierarchical-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.niveau-section {
    background: var(--background);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.niveau-section.expanded {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.niveau-header {
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.niveau-header:hover {
    background: rgba(120, 93, 62, 0.9);
}

.niveau-title {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.niveau-arrow {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.niveau-section.expanded .niveau-arrow {
    transform: rotate(90deg);
}

.niveau-content {
    display: none;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgb(36, 37, 37) 0%, rgb(36, 37, 37) 100%);
}

.niveau-section.expanded .niveau-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;

}

.thematique-section {
   
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.thematique-header {
    background: var(--secondary-color);
    color: white;
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.thematique-header:hover {
    background: #d97706;
}

.thematique-title {
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.thematique-arrow {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.thematique-section.expanded .thematique-arrow {
    transform: rotate(90deg);
}

.thematique-content {
    display: none;
    padding: 1rem;
    background: var(--surface);
}

.thematique-section.expanded .thematique-content {
    display: block;
}

.parties-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.75rem;
}

.partie-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    background: var(--primary-color);
}

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

.partie-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.partie-checkmark {
    width: 16px;
    height: 16px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 3px;
    margin-right: 0.5rem;
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.partie-checkbox input[type="checkbox"]:checked + .partie-checkmark {
    background: var(--success-color);
    border-color: var(--success-color);
}

.partie-checkbox input[type="checkbox"]:checked + .partie-checkmark::after {
    content: '✓';
    position: absolute;
    top: -2px;
    left: 1px;
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.partie-checkbox:hover .partie-checkmark {
    border-color: white;
    background: rgba(255, 255, 255, 0.2);
}

.partie-checkbox:hover input[type="checkbox"]:checked + .partie-checkmark {
    background: white;
    border-color: white;
}

.partie-checkbox:hover input[type="checkbox"]:checked + .partie-checkmark::after {
    color: var(--success-color);
}

.expand-all-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 1rem;
}

.expand-all-btn:hover {
    background: var(--primary-color);
}



.custom-selection {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 1.5rem 0;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.custom-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.custom-type-selector,
.custom-theme-selector {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.custom-type-selector label,
.custom-theme-selector label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.custom-type-selector select,
.custom-theme-selector select {
    background: var(--primary-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--text-primary);
    transition: var(--transition);
    cursor: pointer;
}

.custom-type-selector select:focus,
.custom-theme-selector select:focus {
    outline: none;
    border-color: var(--border-color);
    box-shadow: 0 0 0 3px rgba(120, 93, 62, 0.1);
}

.custom-words-container {
    margin: 1.5rem 0;
}

.words-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
}

.word-checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--surface);
    border: 2px solid white;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.word-checkbox:hover {
    border-color: white;
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.word-checkbox input[type="checkbox"] {
    display: none;
}

.word-checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.word-checkbox input[type="checkbox"]:checked + .word-checkmark {
    background: var(--success-color);
    border-color: var(--success-color);
}

.word-checkbox input[type="checkbox"]:checked + .word-checkmark::after {
    content: '✓';
    color: white;
    font-weight: bold;
    font-size: 12px;
}

.word-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.word-arabic {
    font-family: 'Amiri', serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    direction: rtl;
    text-align: right;
}

.word-translation {
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}

.word-details {
    font-size: 0.8rem;
    color: #888;
    font-style: italic;
}

.word-checkbox:hover .word-checkmark {
    border-color: white;
    background: rgba(120, 93, 62, 0.1);
}

.word-checkbox:hover input[type="checkbox"]:checked + .word-checkmark {
    background: var(--success-color);
    border-color: white;
}


@media (max-width: 768px) {
    .words-grid {
        grid-template-columns: 1fr;
        max-height: 300px;
    }
    
    .custom-controls {
        gap: 1rem;
    }
    
    .word-checkbox {
        padding: 0.75rem;
    }
}

#custom-selection-count {
    font-weight: 600;
    color: white;
}



.audio-btn {
    position: absolute;
    background: rgba(120, 93, 62, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.audio-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.audio-btn:active {
    transform: scale(0.95);
}

.audio-btn.playing {
    background: var(--success-color);
    animation: pulse-audio 1s infinite;
}

.front-audio {
    top: 0.5rem;
    left: 0.5rem;
}

.back-audio {
    top: 0.5rem;
    right: 0.5rem;
}

.arabic-audio {
    top: 0.5rem;
    left: 0.5rem;
    z-index: 10;
}

@keyframes pulse-audio {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}


@media (max-width: 480px) {
    .audio-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
}



::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: #6b5b4f;
    background-clip: content-box;
}

::-webkit-scrollbar-corner {
    background: var(--surface);
}


* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--surface);
}



.numbers-selection {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 1.5rem 0;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.numbers-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1rem 0;
}

.numbers-difficulty-selector,
.numbers-count-selector {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.numbers-difficulty-selector label,
.numbers-count-selector label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.numbers-difficulty-selector select,
.numbers-count-selector select {
    background: var(--primary-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--text-primary);
    transition: var(--transition);
    cursor: pointer;
}

.numbers-difficulty-selector select:focus,
.numbers-count-selector select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(120, 93, 62, 0.1);
}

.numbers-preview {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    text-align: center;
}

.numbers-preview h4 {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.numbers-preview-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 1.5rem;
}

.arabic-number {
    font-family: 'Amiri', serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    background: rgba(120, 93, 62, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    min-width: 80px;
    text-align: center;
}

.preview-arrow {
    color: var(--text-secondary);
    font-size: 1.5rem;
}

.french-number {
    font-weight: 600;
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    min-width: 80px;
    text-align: center;
}

.special-mode-4 {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.special-mode-4:hover {
    background: linear-gradient(135deg, #5855ea 0%, #7c3aed 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.special-mode-4.active {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}


@media (max-width: 768px) {
    .numbers-preview-display {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .arabic-number,
    .french-number {
        font-size: 1.5rem;
    }
    
    .preview-arrow {
        transform: rotate(90deg);
        font-size: 1.2rem;
    }
}


.arabic-number-display {
    font-family: 'Amiri', serif !important;
    font-size: 3rem !important;
    font-weight: 700 !important;
    color: var(--primary-color) !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.card-numbers-indicator {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
    display: none;
}

.number-info {
    text-align: center;
    padding: 1rem;
}

.number-info > div {
    margin: 0.5rem 0;
    font-size: 1.1rem;
}

.number-tip {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 8px;
    padding: 0.75rem;
    margin-top: 1rem !important;
    font-size: 0.9rem !important;
    color: var(--success-color);
    font-style: italic;
    display: none;
}