@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800;900&family=Fira+Code:wght@400;500&display=swap');

:root {
    --bg-dark: #07070f;
    --bg-surface: rgba(255, 255, 255, 0.03);
    --bg-surface-hover: rgba(255, 255, 255, 0.06);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-glow: rgba(99, 102, 241, 0.4);
    
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.25);
    --accent: #a855f7;
    --accent-glow: rgba(168, 85, 247, 0.25);
    
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.2);
    --warning: #f59e0b;
    --warning-glow: rgba(245, 158, 11, 0.2);
    --error: #ef4444;
    --error-glow: rgba(239, 68, 68, 0.2);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.5;
}

/* Ambient Background Lights */
.bg-glow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.bg-glow-1 {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, rgba(0,0,0,0) 70%);
    top: -200px;
    right: -100px;
    border-radius: 50%;
    filter: blur(80px);
    animation: float 20s infinite alternate;
}

.bg-glow-2 {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.1) 0%, rgba(0,0,0,0) 70%);
    bottom: -150px;
    left: -100px;
    border-radius: 50%;
    filter: blur(80px);
    animation: float 25s infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Layout */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 10px var(--primary-glow));
}

.logo-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, #ffffff, #d1d5db);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 0.35rem;
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.tab-btn.active {
    color: var(--text-primary);
    background: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* Common Components */
.glass-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    transition: var(--transition-normal);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

.section {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.section.active {
    display: block;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    color: #fff;
    font-weight: 700;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--primary);
    border: 1px solid var(--border-color);
}

.stat-card.accent .stat-icon {
    color: var(--accent);
}

.stat-card.success .stat-icon {
    color: var(--success);
}

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

.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Quiz List */
.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.quiz-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.quiz-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.quiz-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.quiz-badge {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: 'Fira Code', monospace;
}

.quiz-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 3rem;
}

.quiz-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.quiz-meta-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.quiz-meta-item i {
    font-size: 0.85rem;
}

.quiz-stats-row {
    display: flex;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.8rem;
    margin-bottom: 1.5rem;
    font-size: 0.8rem;
}

.quiz-stat-item {
    display: flex;
    flex-direction: column;
}

.quiz-stat-val {
    font-weight: 700;
    color: #fff;
}

.quiz-stat-lbl {
    color: var(--text-muted);
    font-size: 0.7rem;
}

.quiz-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid transparent;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    background: #4f46e5;
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-accent:hover {
    background: #9333ea;
    box-shadow: 0 6px 16px rgba(168, 85, 247, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn-danger {
    background: var(--error-glow);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.btn-danger:hover {
    background: var(--error);
    color: #fff;
}

.btn-success {
    background: var(--success);
    color: #fff;
    box-shadow: 0 4px 12px var(--success-glow);
}

.btn-success:hover {
    background: #059669;
}

.btn-icon-only {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* File Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.01);
    cursor: pointer;
    transition: var(--transition-normal);
    margin-bottom: 2rem;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.02);
}

.upload-icon {
    font-size: 2.8rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}

.upload-zone:hover .upload-icon {
    color: var(--primary);
    transform: translateY(-5px);
}

.upload-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

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

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.input-control {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    color: #fff;
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.input-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(255, 255, 255, 0.05);
}

textarea.input-control {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

/* Toggle Switch */
.toggle-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
}

.toggle-label {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.toggle-title {
    font-size: 0.9rem;
    font-weight: 600;
}

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

.switch {
    position: relative;
    display: inline-block;
    width: 46px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

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

input:checked + .slider:before {
    transform: translateX(22px);
}

/* Segmented Control */
.segmented-control {
    display: flex;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.25rem;
}

.segmented-control input {
    display: none;
}

.segmented-control label {
    flex: 1;
    text-align: center;
    padding: 0.5rem 0;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 0;
    transition: var(--transition-fast);
}

.segmented-control input:checked + label {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

/* Creator Flow Panels */
.builder-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 1.75rem;
    align-items: start;
}

.questions-list-sidebar {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 600px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.sidebar-q-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.85rem 1rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-q-card:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.15);
}

.sidebar-q-card.active {
    background: var(--primary-glow);
    border-color: var(--primary);
    box-shadow: inset 0 0 8px rgba(99, 102, 241, 0.1);
}

.sidebar-q-num {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    font-family: 'Fira Code', monospace;
}

.sidebar-q-card.active .sidebar-q-num {
    color: var(--primary);
}

.sidebar-q-text {
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

.question-edit-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.answer-option-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.option-correct-checkbox {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    appearance: none;
    outline: none;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    flex-shrink: 0;
}

.option-correct-checkbox:checked {
    border-color: var(--success);
    background: var(--success);
}

.option-correct-checkbox:checked::after {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: #fff;
    font-size: 0.75rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state-icon {
    font-size: 3.5rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Modal and Result Lists */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.01);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.85rem;
}

th, td {
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: rgba(255, 255, 255, 0.02);
    font-weight: 600;
    color: var(--text-secondary);
}

tr:last-child td {
    border-bottom: none;
}

.score-badge {
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.score-badge.grade-5 { background: var(--success-glow); color: #a7f3d0; border: 1px solid rgba(16, 185, 129, 0.3); }
.score-badge.grade-4 { background: var(--primary-glow); color: #c7d2fe; border: 1px solid rgba(99, 102, 241, 0.3); }
.score-badge.grade-3 { background: var(--warning-glow); color: #fde68a; border: 1px solid rgba(245, 158, 11, 0.3); }
.score-badge.grade-2 { background: var(--error-glow); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3); }

/* Play Screen Specific Styles */
.play-layout {
    max-width: 680px;
    margin: 2rem auto;
    width: 100%;
}

.play-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.play-title {
    font-size: 1.2rem;
    font-weight: 800;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 320px;
}

.play-timer {
    font-family: 'Fira Code', monospace;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(168, 85, 247, 0.2);
}

.play-timer.warning {
    color: var(--error);
    background: var(--error-glow);
    border-color: rgba(239, 68, 68, 0.3);
    animation: pulse 1s infinite alternate;
}

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

.progress-track {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(to right, var(--primary), var(--accent));
    box-shadow: 0 0 10px var(--primary-glow);
    width: 0;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.question-play-card {
    margin-bottom: 1.5rem;
    min-height: 320px;
    display: flex;
    flex-direction: column;
}

.question-text-play {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    color: #fff;
}

.choices-play-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 1.5rem;
}

.choice-play-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    text-align: left;
    width: 100%;
}

.choice-play-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

.choice-play-btn.selected {
    background: var(--primary-glow);
    border-color: var(--primary);
    color: #fff;
}

.choice-play-indicator {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-fast);
}

.choice-play-btn.selected .choice-play-indicator {
    border-color: var(--primary);
    background: var(--primary);
}

.choice-play-btn.selected .choice-play-indicator::after {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fff;
}

/* Post-Submit Review Styles */
.choice-play-btn.correct {
    background: var(--success-glow);
    border-color: var(--success);
    color: #fff;
}

.choice-play-btn.correct .choice-play-indicator {
    background: var(--success);
    border-color: var(--success);
}

.choice-play-btn.correct .choice-play-indicator::after {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.65rem;
    color: #fff;
    border-radius: 0;
    background: transparent;
    width: auto;
    height: auto;
}

.choice-play-btn.incorrect {
    background: var(--error-glow);
    border-color: var(--error);
    color: #fff;
}

.choice-play-btn.incorrect .choice-play-indicator {
    background: var(--error);
    border-color: var(--error);
}

.choice-play-btn.incorrect .choice-play-indicator::after {
    content: "\f00d";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.65rem;
    color: #fff;
    border-radius: 0;
    background: transparent;
    width: auto;
    height: auto;
}

/* Explanation Footer Card */
.explanation-card {
    border-color: var(--success-glow);
    background: rgba(16, 185, 129, 0.02);
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.explanation-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success);
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.explanation-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

/* Circular Meter */
.circular-meter-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.circular-meter {
    position: relative;
    width: 160px;
    height: 160px;
}

.circular-meter svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.meter-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.05);
    stroke-width: 12;
}

.meter-fill {
    fill: none;
    stroke: var(--primary);
    stroke-width: 12;
    stroke-linecap: round;
    stroke-dasharray: 440;
    stroke-dashoffset: 440;
    transition: stroke-dashoffset 1s ease-out;
}

.meter-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.meter-score {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    font-weight: 900;
    color: #fff;
    line-height: 1;
}

.meter-lbl {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* Detailed Review Play */
.review-questions-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 2rem;
}

.review-q-item {
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
}

.review-q-item.correct {
    border-color: rgba(16, 185, 129, 0.15);
}

.review-q-item.incorrect {
    border-color: rgba(239, 68, 68, 0.15);
}

.review-q-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.review-q-icon {
    font-size: 1.15rem;
    margin-top: 0.15rem;
}

.review-q-icon.correct { color: var(--success); }
.review-q-icon.incorrect { color: var(--error); }

.review-q-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
}

.review-q-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8rem;
    padding-left: 1.8rem;
}

.review-q-ans-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.review-q-ans-lbl {
    color: var(--text-secondary);
    font-weight: 600;
}

.review-q-ans-val {
    font-weight: 700;
}

.review-q-ans-val.correct { color: var(--success); }
.review-q-ans-val.incorrect { color: var(--error); }

.review-q-expl {
    background: rgba(255, 255, 255, 0.02);
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-top: 0.5rem;
    border-left: 3px solid var(--primary);
}

/* Spinner */
.spinner-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 0;
    gap: 1rem;
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(255, 255, 255, 0.05);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Mobile responsive fixes */
@media (max-width: 768px) {
    .builder-layout {
        grid-template-columns: 1fr;
    }
    
    .questions-list-sidebar {
        max-height: 200px;
    }
    
    header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .tabs {
        overflow-x: auto;
    }
}