/* Quizarr Teacher Dashboard Styles */

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-bg: #eef2ff;

    --success: #22c55e;
    --success-dark: #16a34a;
    --success-bg: #dcfce7;

    --error: #ef4444;
    --error-dark: #dc2626;
    --error-bg: #fee2e2;

    --warning: #f59e0b;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --white: #ffffff;

    /* Answer colors */
    --answer-1: #ef4444;
    --answer-2: #3b82f6;
    --answer-3: #f59e0b;
    --answer-4: #22c55e;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
}

/* Light mode (default) */
:root,
:root[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --border-color: #e5e7eb;
    --border-hover: #d1d5db;
    --surface-card: #ffffff;
    --surface-modal: #ffffff;
    --surface-overlay: rgba(0, 0, 0, 0.5);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

:root[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    --border-color: #374151;
    --border-hover: #4b5563;
    --surface-card: #1f2937;
    --surface-modal: #1f2937;
    --surface-overlay: rgba(0, 0, 0, 0.7);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.25);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3);
}

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

html,
body {
    height: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    background-image: radial-gradient(circle at 100% 0%, rgba(99, 102, 241, 0.05) 0%, transparent 25%),
        radial-gradient(circle at 0% 100%, rgba(99, 102, 241, 0.05) 0%, transparent 25%);
    background-attachment: fixed;
}

#app {
    min-height: 100%;
}

/* ============================================
   Accessibility Utilities
   ============================================ */

/* Screen reader only - visually hidden but accessible to assistive tech */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Show on focus for keyboard users */
.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Skip link - appears when focused, allows keyboard users to skip navigation */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    z-index: 2000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

/* Reduced motion - respect user preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Enhanced focus styles for keyboard navigation */
:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Remove default focus outline (we use focus-visible instead) */
:focus:not(:focus-visible) {
    outline: none;
}

/* Touch target sizing for mobile */
@media (pointer: coarse) {
    .btn,
    .btn-icon-only,
    .modal-close,
    .question-thumb,
    .theme-card,
    .mode-option {
        min-height: 48px;
        min-width: 48px;
    }
}

/* Screens */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: flex;
    flex-direction: column;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-mascot {
    height: 48px;
    width: auto;
}

.logo-small {
    height: 36px;
    width: auto;
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.tagline {
    color: var(--gray-500);
    margin-bottom: var(--space-8);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

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

.btn-danger:hover:not(:disabled) {
    background: var(--error-dark);
}

.btn-small {
    padding: var(--space-2) var(--space-3);
    font-size: 0.875rem;
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: 1.125rem;
}

.btn-icon {
    font-size: 1.25rem;
    line-height: 1;
}

/* Spinner */
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner.large {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

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

/* Forms */
.form-group {
    margin-bottom: var(--space-5);
    text-align: left;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: 1rem;
    font-family: var(--font-sans);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.form-hint {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--space-1);
}

.error {
    background: var(--error-bg);
    color: var(--error-dark);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: var(--space-4);
}

.hidden {
    display: none !important;
}

/* Auth Screen */
#screen-auth {
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--bg-tertiary) 100%);
    justify-content: center;
    align-items: center;
    padding: var(--space-6);
}

.auth-container {
    background: var(--surface-card);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-6);
    color: var(--text-primary);
}

.auth-switch {
    margin-top: var(--space-6);
    color: var(--gray-500);
}

.auth-switch a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-switch a:hover {
    text-decoration: underline;
}

.success-message {
    text-align: center;
    padding: var(--space-6) 0;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: var(--success-bg);
    color: var(--success);
    font-size: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
}

.success-message h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-2);
}

.success-message p {
    color: var(--text-secondary);
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    background: var(--surface-card);
    border-bottom: 1px solid var(--border-color);
    gap: var(--space-4);
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.header-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.user-email {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.title-input {
    font-size: 1.25rem;
    font-weight: 600;
    border: none;
    background: transparent;
    text-align: center;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    max-width: 400px;
    width: 100%;
}

.title-input:hover {
    background: var(--bg-tertiary);
}

.title-input:focus {
    outline: none;
    background: var(--bg-tertiary);
}

/* Dashboard */
.dashboard-content {
    flex: 1;
    padding: var(--space-6) var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
}

.dashboard-header h1 {
    font-size: 1.75rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--space-4);
}

.empty-state h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.loading-state {
    text-align: center;
    padding: var(--space-12);
    color: var(--text-secondary);
}

.loading-state .spinner {
    margin: 0 auto var(--space-4);
    color: var(--primary);
}

/* Quiz Grid */
.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-5);
}

.quiz-card {
    background: var(--surface-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: var(--space-5);
    cursor: pointer;
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
    animation: popIn 0.3s ease-out backwards;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

.quiz-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.quiz-card-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.quiz-card-actions {
    display: flex;
    gap: var(--space-2);
}

/* Quiz Builder */
.builder-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.builder-sidebar {
    width: 240px;
    background: var(--surface-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.question-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-3);
}

.question-thumb {
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}

.question-thumb:hover {
    background: var(--bg-tertiary);
}

.question-thumb.active {
    border-color: var(--primary);
    background: var(--primary-bg);
}

.question-thumb-num {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.question-thumb-text {
    font-size: 0.875rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.builder-main {
    flex: 1;
    padding: var(--space-6);
    overflow-y: auto;
    background: var(--bg-secondary);
}

.empty-builder {
    text-align: center;
    padding: var(--space-12);
    color: var(--text-secondary);
}

.question-editor {
    max-width: 700px;
    margin: 0 auto;
}

.editor-section {
    margin-bottom: var(--space-6);
}

.editor-section>label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.question-textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--space-4);
    font-size: 1.125rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    resize: vertical;
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.question-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.answers-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}

.answer-input {
    display: flex;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.answer-input input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: none;
    font-size: 1rem;
    color: var(--white);
    background: inherit;
}

.answer-input input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.answer-input input:focus {
    outline: none;
}

.answer-1 {
    background: var(--answer-1);
}

.answer-2 {
    background: var(--answer-2);
}

.answer-3 {
    background: var(--answer-3);
}

.answer-4 {
    background: var(--answer-4);
}

.correct-toggle {
    width: 44px;
    background: rgba(0, 0, 0, 0.2);
    border: none;
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.correct-toggle:hover {
    background: rgba(0, 0, 0, 0.3);
}

.correct-toggle.active {
    background: rgba(255, 255, 255, 0.3);
    color: var(--white);
}

.editor-options {
    display: flex;
    gap: var(--space-4);
    align-items: flex-end;
    flex-wrap: wrap;
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.option-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.option-group select {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

/* Launch Screen */
#screen-launch {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    justify-content: center;
    align-items: center;
}

.launch-container {
    text-align: center;
    max-width: 600px;
    padding: var(--space-6);
}

.launch-header h1 {
    font-size: 2rem;
    margin-bottom: var(--space-2);
}

.launch-header p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--space-8);
}

.launch-code {
    margin-bottom: var(--space-6);
}

.room-code {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    background: var(--white);
    color: var(--primary);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-xl);
    display: inline-block;
    margin-bottom: var(--space-2);
}

.launch-code p {
    opacity: 0.8;
}

.launch-qr {
    margin-bottom: var(--space-8);
}

.qr-placeholder {
    width: 180px;
    height: 180px;
    background: var(--white);
    border-radius: var(--radius-lg);
    margin: 0 auto var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3);
}

.qr-placeholder canvas {
    max-width: 100%;
    max-height: 100%;
}

.launch-qr p {
    opacity: 0.8;
}

.launch-players {
    margin-bottom: var(--space-8);
}

.player-count {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.player-names {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    max-height: 120px;
    overflow-y: auto;
}

.player-tag {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

.launch-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
}

.launch-actions .btn-secondary {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--white);
}

.launch-actions .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Game Control Screen */
#screen-game {
    background: var(--gray-900);
    color: var(--white);
}

.game-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
}

.game-progress {
    font-size: 1.125rem;
    opacity: 0.8;
}

.game-timer {
    font-size: 2rem;
    font-weight: 700;
    background: var(--primary);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.game-question {
    text-align: center;
    margin-bottom: var(--space-8);
}

.game-question h2 {
    font-size: 2rem;
    line-height: 1.3;
}

.game-answers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.answer-bar {
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    color: var(--white);
    font-size: 1.125rem;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.answer-bar:nth-child(1) {
    background: var(--answer-1);
}

.answer-bar:nth-child(2) {
    background: var(--answer-2);
}

.answer-bar:nth-child(3) {
    background: var(--answer-3);
}

.answer-bar:nth-child(4) {
    background: var(--answer-4);
}

.answer-count {
    background: rgba(0, 0, 0, 0.2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

.game-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-6);
}

.stat-box {
    text-align: center;
}

.stat-box .stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
}

.stat-box .stat-label {
    font-size: 0.875rem;
    opacity: 0.7;
}

.game-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

.game-controls .btn-secondary {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--white);
}

/* Leaderboard Screen */
#screen-leaderboard {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    justify-content: center;
    align-items: center;
}

.leaderboard-container {
    text-align: center;
    max-width: 600px;
    width: 100%;
    padding: var(--space-6);
}

.leaderboard-container h1 {
    font-size: 2.5rem;
    margin-bottom: var(--space-8);
}

.podium {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.podium-place {
    text-align: center;
}

.podium-place.first {
    order: 2;
}

.podium-place.second {
    order: 1;
}

.podium-place.third {
    order: 3;
}

.podium-avatar {
    width: 60px;
    height: 60px;
    background: var(--white);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--space-2);
}

.podium-place.first .podium-avatar {
    width: 80px;
    height: 80px;
    font-size: 2rem;
}

.podium-name {
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.podium-score {
    font-size: 0.875rem;
    opacity: 0.8;
}

.rankings-list {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-6);
    max-height: 200px;
    overflow-y: auto;
}

.ranking-item {
    display: flex;
    align-items: center;
    padding: var(--space-3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ranking-item:last-child {
    border-bottom: none;
}

.ranking-position {
    width: 32px;
    font-weight: 600;
}

.ranking-name {
    flex: 1;
    text-align: left;
}

.ranking-score {
    opacity: 0.8;
}

.leaderboard-controls {
    margin-top: var(--space-4);
}

/* Results Screen */
.results-content {
    flex: 1;
    padding: var(--space-6) var(--space-8);
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.results-summary {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
    padding: var(--space-6);
    background: var(--surface-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.summary-stat {
    text-align: center;
}

.summary-stat .stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.summary-stat .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.results-table-container {
    background: var(--surface-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
}

.results-table th,
.results-table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.results-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.results-table tbody tr:hover {
    background: var(--bg-secondary);
}

.results-table .rank-1 {
    color: #ffd700;
}

.results-table .rank-2 {
    color: #c0c0c0;
}

.results-table .rank-3 {
    color: #cd7f32;
}

/* Game Over Screen */
#screen-gameover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    justify-content: center;
    align-items: center;
}

.gameover-container {
    text-align: center;
    max-width: 600px;
    padding: var(--space-6);
}

.gameover-container h1 {
    font-size: 3rem;
    margin-bottom: var(--space-8);
}

.winner-display {
    margin-bottom: var(--space-8);
}

.winner-crown {
    font-size: 4rem;
    margin-bottom: var(--space-2);
}

.winner-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.winner-score {
    font-size: 1.25rem;
    opacity: 0.9;
}

.final-podium {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.gameover-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
}

.gameover-actions .btn-secondary {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--white);
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        padding: var(--space-3) var(--space-4);
    }

    .header-center {
        order: 3;
        width: 100%;
        margin-top: var(--space-2);
    }

    .builder-content {
        flex-direction: column;
    }

    .builder-sidebar {
        width: 100%;
        max-height: 150px;
        border-right: none;
        border-bottom: 1px solid var(--gray-200);
    }

    .question-list {
        display: flex;
        overflow-x: auto;
        padding: var(--space-2);
    }

    .question-thumb {
        flex-shrink: 0;
        width: 120px;
        margin-right: var(--space-2);
        margin-bottom: 0;
    }

    .answers-grid {
        grid-template-columns: 1fr;
    }

    .game-answers {
        grid-template-columns: 1fr;
    }

    .room-code {
        font-size: 2.5rem;
        padding: var(--space-3) var(--space-5);
    }

    .dashboard-content {
        padding: var(--space-4);
    }

    .dashboard-header {
        flex-direction: column;
        gap: var(--space-4);
        align-items: stretch;
    }
}

/* ============================================
   Settings Modal & Theme Picker
   ============================================ */

/* Icon-only button */
.btn-icon-only {
    padding: var(--space-2);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

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

/* Modal Base */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: var(--surface-overlay);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--surface-modal);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-1);
    line-height: 1;
    border-radius: var(--radius-md);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* Settings Section */
.settings-section h3 {
    margin: 0 0 var(--space-2);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.settings-hint {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-4);
}

/* Theme Grid */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.theme-card {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
}

.theme-card:hover {
    border-color: var(--border-hover);
}

.theme-card.selected {
    border-color: var(--primary);
    background: var(--primary-bg);
}

.theme-card-colors {
    display: flex;
    gap: 2px;
    margin-bottom: var(--space-2);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.theme-color-swatch {
    height: 32px;
    flex: 1;
}

.theme-color-swatch:first-child {
    flex: 2;
}

.theme-card-name {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Custom Theme Section */
.custom-theme-section {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-5);
    background: var(--bg-secondary);
}

.custom-theme-section h4 {
    margin: 0 0 var(--space-3);
    font-size: 0.875rem;
    font-weight: 600;
}

.color-picker-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-3);
}

.color-picker-item {
    text-align: center;
}

.color-picker-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.color-picker-item input[type="color"] {
    width: 48px;
    height: 48px;
    padding: 0;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    background: none;
}

.color-picker-item input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 4px;
}

.color-picker-item input[type="color"]::-webkit-color-swatch {
    border-radius: var(--radius-sm);
    border: none;
}

/* Theme Preview */
.theme-preview {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    background: var(--bg-secondary);
}

.theme-preview h4 {
    margin: 0 0 var(--space-3);
    font-size: 0.875rem;
    font-weight: 600;
}

.preview-buttons {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.preview-btn {
    padding: var(--space-2) var(--space-4);
    border: none;
    border-radius: var(--radius-md);
    color: var(--white);
    font-weight: 600;
    cursor: default;
}

.preview-primary {
    background: var(--primary);
}

.preview-answer-1 {
    background: var(--answer-1);
}

.preview-answer-2 {
    background: var(--answer-2);
}

.preview-answer-3 {
    background: var(--answer-3);
}

.preview-answer-4 {
    background: var(--answer-4);
}

.settings-separator {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--space-6) 0;
}

.mode-toggle-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

.mode-option {
    padding: var(--space-4);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    transition: var(--transition-base);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
}

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

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

.mode-icon {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
}

/* Responsive Modal */
@media (max-width: 640px) {
    .modal-content {
        width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .color-picker-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .theme-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}