:root {
    /* Light Theme Colors */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #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);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Dark Theme Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --primary: #60a5fa;
    --primary-light: #93c5fd;
    --primary-dark: #3b82f6;
    --secondary: #a78bfa;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: var(--transition);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header - Smaller font sizes */
.header {
    margin-bottom: 20px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 10px;
}

h1 i {
    font-size: 1.6rem;
}

h2 {
    font-size: 1.4rem;
}

h3 {
    font-size: 1.2rem;
}

h4 {
    font-size: 1.1rem;
}

/* Theme Toggle - Compact */
.theme-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 15px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.toggle-checkbox {
    display: none;
}

.toggle-label {
    position: relative;
    display: block;
    width: 52px;
    height: 28px;
    background: var(--border);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-label:after {
    content: '';
    position: absolute;
    top: 4px;
    left: 4px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
}

.toggle-checkbox:checked + .toggle-label {
    background: var(--primary);
}

.toggle-checkbox:checked + .toggle-label:after {
    left: calc(100% - 24px);
}

.toggle-label i {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: white;
}

.toggle-label .fa-sun {
    left: 6px;
}

.toggle-label .fa-moon {
    right: 6px;
}

.toggle-text {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Main Grid - Mobile first */
.main-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
}

/* Responsive reordering - Setup panel goes down, Practice goes up on mobile */
@media (min-width: 1024px) {
    .main-grid {
        display: grid;
        grid-template-columns: 1fr 1.5fr;
        gap: 25px;
    }
    
    /* On desktop: Setup = Left, Practice = Right (default order) */
    .setup-panel {
        order: 1;
    }
    
    .practice-panel {
        order: 2;
    }
}

/* On mobile: Practice goes up, Setup goes down */
@media (max-width: 1023px) {
    .setup-panel {
        order: 2;
    }
    
    .practice-panel {
        order: 1;
    }
}

/* Panels - Compact */
.panel {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition);
}

.panel-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.panel-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel-content {
    padding: 20px;
}

/* Setup Panel */
.upload-section {
    margin-bottom: 20px;
}

.file-upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 30px 15px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 15px;
    position: relative;
}

.file-upload-area:hover {
    border-color: var(--primary);
    background: var(--bg-primary);
}

.file-upload-area.drag-over {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.05);
}

.upload-icon {
    font-size: 36px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.file-upload-area p {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 5px;
    font-size: 0.95rem;
}

.upload-subtext {
    color: var(--text-muted) !important;
    font-size: 0.8rem;
}

.file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.file-info {
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Form Groups - Compact */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* Custom Select - Compact */
.select-wrapper {
    position: relative;
}

.custom-select {
    width: 100%;
    padding: 12px 40px 12px 15px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    appearance: none;
    transition: var(--transition);
}

.custom-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.select-arrow {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Difficulty Buttons - Compact */
.difficulty-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.difficulty-btn {
    padding: 12px 8px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.difficulty-btn:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.difficulty-btn.active {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.difficulty-label {
    font-weight: 600;
    font-size: 0.85rem;
}

.difficulty-time {
    font-size: 0.75rem;
    opacity: 0.9;
}

.difficulty-btn[data-level="easy"].active {
    border-color: var(--success);
    background: var(--success);
}

.difficulty-btn[data-level="medium"].active {
    border-color: var(--warning);
    background: var(--warning);
}

.difficulty-btn[data-level="hard"].active {
    border-color: var(--danger);
    background: var(--danger);
}

/* Leaderboard Section - Compact */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.section-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 0.9rem;
}

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

.score-card {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
    color: white;
}

.score-value {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 5px;
}

.score-label {
    font-size: 0.85rem;
    opacity: 0.9;
}

/* Practice Panel Stats Grid - More compact */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

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

.stat-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.stat-info {
    flex: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.multiplier {
    color: var(--primary);
    animation: pulse 1s infinite;
}

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

/* Timer Section - Compact */
.timer-section {
    margin-bottom: 20px;
}

.timer-container {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 15px;
    position: relative;
    overflow: hidden;
}

.timer-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.timer-display {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.timer-display i {
    font-size: 1.2rem;
}

.timer-progress {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.timer-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--success), var(--warning));
    width: 100%;
    transition: width 1s linear;
}

.timer-progress-bar.warning {
    background: linear-gradient(90deg, var(--warning), var(--danger));
}

.timer-progress-bar.danger {
    background: var(--danger);
}

/* Question Section - Compact */
.question-section {
    margin-bottom: 20px;
}

.question-controls {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.question-card {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 20px;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary);
    transition: opacity 0.3s ease;
}

.question-card.loading {
    opacity: 0.7;
}

.question-placeholder {
    text-align: center;
    color: var(--text-muted);
}

.question-placeholder i {
    font-size: 36px;
    margin-bottom: 10px;
    color: var(--primary-light);
}

.question-placeholder p {
    font-size: 0.95rem;
}

.question-content p {
    font-size: 1rem;
    line-height: 1.5;
}

.question-category {
    display: inline-block;
    background: var(--primary-light);
    color: white;
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 0.75rem;
    margin-top: 10px;
    font-weight: 500;
}

.question-category i {
    margin-right: 4px;
    font-size: 0.7rem;
}

/* Answer Section - Compact */
.answer-section {
    margin-bottom: 20px;
}

.textarea-wrapper {
    position: relative;
}

textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.95rem;
    resize: vertical;
    min-height: 100px;
    transition: var(--transition);
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.textarea-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 8px;
}

.char-count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Voice Controls - Compact */
.voice-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.voice-btn {
    flex: 1;
    min-width: 120px;
    padding: 12px 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
}

.voice-btn.stop {
    background: var(--danger);
}

.voice-status {
    padding: 8px 15px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: none;
}

.voice-status.active {
    display: flex;
}

.recording {
    color: var(--danger);
    animation: blink 1s infinite;
}

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

/* Buttons - More compact */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex: 1;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #7c3aed;
    transform: translateY(-2px);
}

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

.btn-success:hover:not(:disabled) {
    background: #0da271;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-submit {
    width: 100%;
    margin-bottom: 20px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn.loading {
    position: relative;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Result Section - Compact */
.result-section {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden;
    display: none;
}

.result-section.active {
    display: block;
    animation: slideUp 0.3s ease;
}

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

.result-header {
    padding: 15px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

.result-content {
    padding: 20px;
}

.similarity-score {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.score-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: conic-gradient(var(--primary) 0% 0%, var(--border) 0% 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.score-circle::before {
    content: '';
    position: absolute;
    width: 75px;
    height: 75px;
    background: var(--bg-secondary);
    border-radius: 50%;
}

.score-circle span {
    position: relative;
    z-index: 1;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.score-text {
    flex: 1;
}

.accuracy {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.feedback {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
}

.feedback.excellent { color: var(--success); }
.feedback.good { color: var(--primary); }
.feedback.fair { color: var(--warning); }
.feedback.poor { color: var(--danger); }

.correct-answer {
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    padding: 15px;
}

.answer-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.answer-text {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.5;
}

/* Footer - Compact */
.footer {
    margin-top: 30px;
    text-align: center;
    padding: 15px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
}

/* Toast Notification - Compact */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
    max-width: 350px;
    font-size: 0.9rem;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

/* Confetti */
.confetti {
    position: fixed;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 2px;
    z-index: 1001;
    pointer-events: none;
    animation: fall 2s linear forwards;
}

@keyframes fall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

/* Loading State */
.loading-placeholder {
    text-align: center;
    padding: 30px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

.loading-placeholder p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

/* Insights Section - Compact */
.insights-section {
    margin-bottom: 20px;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

@media (max-width: 768px) {
    .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .insights-grid {
        grid-template-columns: 1fr;
    }
}

.insight-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

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

.insight-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.insight-content {
    flex: 1;
}

.insight-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.insight-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Notes */
.note {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--primary);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    margin-top: 12px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.note i {
    color: var(--primary);
    font-size: 1rem;
    margin-top: 1px;
}

.note p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.4;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Auto-load notification */
.auto-next-notice {
    position: fixed;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: slideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.auto-next-notice i {
    animation: spin 1s linear infinite;
}

/* Countdown timer */
.countdown-timer {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideUp 0.3s ease;
    font-size: 0.9rem;
}

/* Safety warning */
.safety-warning {
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--danger);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    margin: 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.safety-warning i {
    color: var(--danger);
    font-size: 0.9rem;
}

/* Responsive Design for very small screens */
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    h1 i {
        font-size: 1.3rem;
    }
    
    .panel-header {
        padding: 15px;
    }
    
    .panel-content {
        padding: 15px;
    }
    
    .stats-grid {
        gap: 8px;
    }
    
    .stat-card {
        padding: 12px;
        gap: 10px;
    }
    
    .stat-icon {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
    
    .stat-value {
        font-size: 1.1rem;
    }
    
    .question-controls {
        flex-direction: column;
    }
    
    .voice-controls {
        flex-direction: column;
    }
    
    .voice-btn {
        min-width: 100%;
    }
    
    .timer-display {
        font-size: 1.8rem;
    }
    
    .score-circle {
        width: 80px;
        height: 80px;
    }
    
    .score-circle::before {
        width: 60px;
        height: 60px;
    }
    
    .score-circle span {
        font-size: 1.2rem;
    }
    
    .similarity-score {
        flex-direction: column;
        text-align: center;
    }
}

/* Tablet adjustments */
@media (min-width: 769px) and (max-width: 1023px) {
    .container {
        padding: 20px;
    }
    
    .question-controls {
        flex-wrap: wrap;
    }
    
    .btn {
        min-width: 150px;
    }
}

/* Print styles */
@media print {
    .theme-switch,
    .file-upload-area,
    .voice-controls,
    .toast,
    .confetti {
        display: none !important;
    }
    
    .panel {
        box-shadow: none;
        border: 1px solid var(--border);
    }
}

/* Free Time Button Styles */
#freeTimeBtn {
    background: linear-gradient(135deg, #ff9800, #f57c00);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

#freeTimeBtn:hover {
    background: linear-gradient(135deg, #f57c00, #e65100);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 152, 0, 0.3);
}

#freeTimeBtn:active {
    transform: translateY(0);
}

#freeTimeBtn.free-time-active {
    background: linear-gradient(135deg, #4caf50, #388e3c) !important;
    color: white !important;
    animation: pulse 2s infinite;
}

#freeTimeBtn.free-time-active:hover {
    background: linear-gradient(135deg, #388e3c, #2e7d32) !important;
}

/* Free Time Indicator */
.free-time-indicator {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--success);
    color: white;
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
    animation: pulse 2s infinite;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

@keyframes pulse {
    0% { 
        transform: scale(1);
        box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
    }
    50% { 
        transform: scale(1.05);
        box-shadow: 0 4px 15px rgba(76, 175, 80, 0.5);
    }
    100% { 
        transform: scale(1);
        box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
    }
}

/* Timer in Free Time Mode */
.timer-container.free-time .timer-display {
    color: var(--success);
    font-weight: bold;
}

.timer-container.free-time .timer-progress {
    background: var(--success) !important;
}

/* Typing detection hint */
.typing-hint {
    position: absolute;
    bottom: 5px;
    right: 10px;
    font-size: 11px;
    color: var(--text-muted);
    font-style: italic;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    #freeTimeBtn {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .free-time-indicator {
        top: 5px;
        right: 5px;
        font-size: 11px;
        padding: 3px 8px;
    }
}
div#multiplier {
    width: 33%;
    border-radius: 100%;
}
/* Help Button Styles */
.btn-help {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: white;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(37, 117, 252, 0.3);
    z-index: 1000;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-help:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 117, 252, 0.4);
}

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

/* ====== HELP MODAL STYLES ====== */

/* Help Button */
#helpBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: white;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(37, 117, 252, 0.3);
    z-index: 1000;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

#helpBtn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 117, 252, 0.4);
}

#helpBtn:active {
    transform: scale(0.95);
}

/* Study Mode Buttons */
.study-mode-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 10px;
}

.study-mode-btn {
    padding: 15px;
    border: 2px solid var(--border);
    background: var(--card-bg);
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.study-mode-btn.active {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.2);
}

.study-mode-btn i {
    font-size: 24px;
    color: var(--primary);
}

.study-mode-btn span {
    font-weight: 600;
    color: var(--text);
}

.mode-desc {
    font-size: 12px;
    color: var(--text-muted);
    opacity: 0.8;
}

/* Progress Chart */
.progress-chart {
    margin-top: 20px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 12px;
}

.chart-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    height: 150px;
    margin-top: 15px;
    padding: 0 10px;
}

.chart-bar {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    margin: 0 5px;
}

.bar-container {
    width: 30px;
    height: 100px;
    background: var(--border);
    border-radius: 6px 6px 0 0;
    position: relative;
    overflow: hidden;
}

.bar-fill {
    width: 100%;
    background: linear-gradient(to top, var(--primary), var(--secondary));
    position: absolute;
    bottom: 0;
    transition: height 0.5s ease;
}

.bar-label {
    margin-top: 5px;
    font-size: 12px;
    color: var(--text-muted);
}

.bar-value {
    margin-top: 5px;
    font-weight: 600;
    color: var(--text);
}

/* Achievement Toast */
.achievement-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    animation: slideInRight 0.5s ease;
}

.achievement-toast {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    gap: 15px;
    max-width: 350px;
}

.achievement-icon i {
    font-size: 36px;
}

.achievement-content h4 {
    margin: 0 0 5px 0;
    font-size: 14px;
    opacity: 0.9;
}

.achievement-content h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
}

.achievement-content p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

/* Topic Strength Cards */
.topic-strength-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.topic-card {
    padding: 15px;
    background: var(--card-bg);
    border-radius: 10px;
    border-left: 4px solid var(--border);
}

.topic-card.excellent {
    border-left-color: var(--success);
}

.topic-card.good {
    border-left-color: var(--primary);
}

.topic-card.fair {
    border-left-color: var(--warning);
}

.topic-card.needs-improvement {
    border-left-color: var(--danger);
}

.topic-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.topic-name {
    font-weight: 600;
    color: var(--text);
}

.topic-stats {
    font-size: 14px;
    color: var(--text-muted);
}

/* Recommendations Panel */
.recommendations-panel {
    margin-top: 20px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(var(--secondary-rgb), 0.1));
    border-radius: 12px;
    border: 1px solid rgba(var(--primary-rgb), 0.2);
}

.recommendation-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--card-bg);
    border-radius: 10px;
    margin-bottom: 10px;
    border-left: 4px solid var(--primary);
}

.recommendation-icon {
    width: 40px;
    height: 40px;
    background: rgba(var(--primary-rgb), 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.recommendation-icon i {
    color: var(--primary);
    font-size: 18px;
}

.recommendation-content h4 {
    margin: 0 0 5px 0;
    color: var(--text);
}

.recommendation-content p {
    margin: 0;
    color: var(--text-muted);
    font-size: 14px;
}

/* Animations */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes confettiRain {
    0% {
        transform: translateY(-100vh) rotate(0deg);
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
    }
}

/* Test Mode Specific Styles */
.practice-panel.test-mode {
    border: 2px solid var(--warning);
}

.practice-panel.test-mode .panel-header {
    background: linear-gradient(135deg, var(--warning), #f59e0b);
}

.practice-panel.test-mode .timer-container {
    background: rgba(245, 158, 11, 0.1);
    border: 2px solid var(--warning);
}

/* Review Mode Specific Styles */
.practice-panel.review-mode {
    border: 2px solid var(--success);
}

.practice-panel.review-mode .panel-header {
    background: linear-gradient(135deg, var(--success), #10b981);
}

.hidden {
    display: none !important;
}

/* Button States */
.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-warning:hover {
    background: #d97706;
}

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

.btn-danger:hover {
    background: #dc2626;
}

/* Textarea read-only state */
textarea:read-only {
    background: var(--bg-primary);
    border-color: var(--border);
    cursor: not-allowed;
}

textarea:read-only:focus {
    border-color: var(--border);
    box-shadow: none;
}


/* Study Mode Specific Styles */
.study-mode-btn {
    position: relative;
    overflow: hidden;
}

.review-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--danger);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: bold;
    animation: pulse 1.5s infinite;
}

/* Test Mode Styles */
.practice-panel.test-mode {
    border: 2px solid var(--warning);
    position: relative;
}

.practice-panel.test-mode::before {
    content: 'EXAM MODE';
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--warning);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: bold;
    z-index: 1;
}

/* Review Mode Styles */
.practice-panel.review-mode {
    border: 2px solid var(--success);
    position: relative;
}

.practice-panel.review-mode::before {
    content: 'REVIEW MODE';
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--success);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: bold;
    z-index: 1;
}

/* Animation for timer warning */
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* Responsive adjustments for study modes */
@media (max-width: 768px) {
    .study-mode-buttons {
        grid-template-columns: 1fr;
    }
    
    .practice-panel.test-mode::before,
    .practice-panel.review-mode::before {
        font-size: 8px;
        right: 10px;
        padding: 2px 8px;
    }
}