/**
 * ================================================================
 * Activité Trivia - Mobile-First Architecture
 * Version: 3.17.0
 * ================================================================
 *
 * Quiz trivia avec timer, questions, résultats, leaderboard
 * Mobile-first responsive: <768px (base) → 768px+ (tablet) → 1024px+ (desktop)
 */

/* ================================================================
   1. CSS VARIABLES - Design Tokens
   ================================================================ */
:root {
    /* Colors - Héritage système */
    --cal-primary: #667eea; /* v3.9.4 - Fallback simplifié */
    --cal-secondary: #764ba2; /* v3.9.4 - Fallback simplifié */
    --cal-success: #7ED957 /* v3.9.5 - Fallback simplifié */;
    --cal-danger: #ff4757; /* v3.9.4 - Fallback simplifié */
    --cal-white: #FFFFFF;
    --cal-text: #2B3674;
    --cal-text-light: #A3AED0;
    --cal-text-muted: #6B7280;

    /* Trivia specific colors */
    --trivia-primary: #ff6b6b;
    --trivia-secondary: #ffa500;
    --trivia-gradient: linear-gradient(135deg, var(--trivia-primary) 0%, var(--trivia-secondary) 100%);
    --trivia-success: #22c55e;
    --trivia-success-dark: #16a34a;
    --trivia-warning: #f59e0b;
    --trivia-error: #ef4444;
    --trivia-bg-light: #f8f9fa;
    --trivia-border: #e2e8f0;
    --trivia-text: #2d3748;
    --trivia-text-muted: #64748b;

    /* Typography */
    --cal-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --cal-font-size-xs: 11px;
    --cal-font-size-sm: 14px;
    --cal-font-size-base: 16px;
    --cal-font-size-lg: 18px;
    --cal-font-size-xl: 24px;
    --cal-font-size-2xl: 32px;

    /* Spacing */
    --cal-spacing-xs: 8px;
    --cal-spacing-sm: 12px;
    --cal-spacing-md: 16px;
    --cal-spacing-lg: 24px;
    --cal-spacing-xl: 32px;
    --cal-spacing-2xl: 48px;

    /* Shadows */
    --cal-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --cal-shadow-md: 0 4px 15px rgba(0, 0, 0, 0.05);
    --cal-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --cal-shadow-xl: 0 10px 40px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --cal-radius-sm: 8px;
    --cal-radius-md: 12px;
    --cal-radius-lg: 15px;
    --cal-radius-xl: 20px;
    --cal-radius-full: 9999px;

    /* Transitions */
    --cal-transition-fast: 0.15s ease;
    --cal-transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --cal-transition-slow: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Z-Index */
    --cal-z-confetti: 9999;
}

/* ================================================================
   2. CONTAINER PRINCIPAL - Mobile-First
   ================================================================ */
.trivia-container {
    max-width: 100%;
    margin: 0 auto;
    padding: var(--cal-spacing-lg);
    background: linear-gradient(135deg, var(--cal-white) 0%, var(--trivia-bg-light) 100%);
    border-radius: var(--cal-radius-xl);
    box-shadow: var(--cal-shadow-xl);
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .trivia-container {
        max-width: 900px;
        padding: var(--cal-spacing-xl);
    }
}

/* ================================================================
   3. HEADER
   ================================================================ */
.trivia-header {
    text-align: center;
    margin-bottom: var(--cal-spacing-2xl);
}

.trivia-header h2 {
    font-size: var(--cal-font-size-xl); /* 24px mobile */
    font-weight: bold;
    color: var(--trivia-text);
    margin-bottom: var(--cal-spacing-md);
    background: var(--trivia-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .trivia-header h2 {
        font-size: var(--cal-font-size-2xl); /* 32px desktop */
    }
}

.trivia-intro {
    font-size: var(--cal-font-size-base);
    color: var(--trivia-text-muted);
    line-height: 1.6;
}

/* ================================================================
   4. BARRE DE STATISTIQUES - Mobile-First Grid Fix
   ================================================================ */
.trivia-stats-bar {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 2 cols mobile */
    gap: var(--cal-spacing-sm);
    margin-bottom: var(--cal-spacing-xl);
    padding: var(--cal-spacing-md);
    background: var(--cal-white);
    border-radius: var(--cal-radius-lg);
    box-shadow: var(--cal-shadow-md);
    box-sizing: border-box;
    width: 100%;
    overflow: hidden;
}

@media (min-width: 480px) {
    .trivia-stats-bar {
        grid-template-columns: repeat(4, 1fr); /* 4 cols > 480px */
        gap: var(--cal-spacing-md);
        padding: var(--cal-spacing-lg);
    }
}

/* Stats bar dans le modal */
.crowdaa-modal .trivia-stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--cal-spacing-sm);
    padding: var(--cal-spacing-md);
}

.crowdaa-modal .stat-box {
    padding: var(--cal-spacing-sm);
}

.crowdaa-modal .stat-value {
    font-size: var(--cal-font-size-xl);
}

.crowdaa-modal .stat-label {
    font-size: var(--cal-font-size-xs);
}

/* Résultats dans le modal */
.crowdaa-modal .trivia-results {
    padding: var(--cal-spacing-lg);
}

.crowdaa-modal .results-header {
    margin-bottom: var(--cal-spacing-lg);
}

.crowdaa-modal .results-icon {
    font-size: 50px;
}

.crowdaa-modal .results-header h3 {
    font-size: var(--cal-font-size-xl);
}

.crowdaa-modal .results-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--cal-spacing-md);
}

.crowdaa-modal .result-card {
    padding: var(--cal-spacing-lg);
}

.crowdaa-modal .result-icon {
    font-size: 28px;
    margin-bottom: var(--cal-spacing-sm);
}

.crowdaa-modal .result-value {
    font-size: 26px;
    margin-bottom: var(--cal-spacing-xs);
}

.crowdaa-modal .result-label {
    font-size: var(--cal-font-size-sm);
}

.trivia-game .stat-box {
    display: inline-block;
    text-align: center;
    padding: var(--cal-spacing-md);
    border-radius: var(--cal-radius-md);
    background: linear-gradient(135deg, var(--trivia-bg-light) 0%, var(--cal-white) 100%);
    border: 2px solid var(--trivia-border);
    transition: var(--cal-transition-base);
    transform: translate3d(0, 0, 0); /* GPU acceleration */
    backface-visibility: hidden;
    box-sizing: border-box;
    min-width: 0; /* Permet au contenu de se contracter */
    overflow: hidden;
}

@media (min-width: 768px) {
    .stat-box {
        padding: var(--cal-spacing-lg);
    }
}

.stat-box:hover {
    transform: translateY(-2px) translate3d(0, 0, 0);
    box-shadow: var(--cal-shadow-lg);
}

.stat-label {
    display: block;
    font-size: var(--cal-font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--trivia-text-muted);
    margin-bottom: var(--cal-spacing-xs);
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

@media (max-width: 480px) {
    .stat-label {
        font-size: var(--cal-font-size-xs);
        letter-spacing: 0.3px;
    }
}

.stat-value {
    display: inline-block;
    font-size: var(--cal-font-size-xl); /* 24px mobile */
    font-weight: bold;
    color: var(--trivia-text);
    word-break: break-word;
    overflow-wrap: break-word;
}

@media (max-width: 480px) {
    .stat-value {
        font-size: var(--cal-font-size-lg); /* 18px pour très petit écran */
    }
}

@media (min-width: 768px) {
    .stat-value {
        font-size: 28px;
    }
}

.stat-total {
    font-size: var(--cal-font-size-base);
    color: #94a3b8;
    margin-left: 2px;
}

/* ================================================================
   5. TIMER BOX - États avec animations
   ================================================================ */
.timer-box {
    border-color: var(--trivia-success);
    background: linear-gradient(135deg, #f0fdf4 0%, var(--cal-white) 100%);
}

.timer-box .stat-value {
    color: var(--trivia-success);
}

.timer-box.warning {
    border-color: var(--trivia-warning);
    background: linear-gradient(135deg, #fffbeb 0%, var(--cal-white) 100%);
    animation: pulse-warning 1s ease-in-out infinite;
}

.timer-box.warning .stat-value {
    color: var(--trivia-warning);
}

.timer-box.critical {
    border-color: var(--trivia-error);
    background: linear-gradient(135deg, #fef2f2 0%, var(--cal-white) 100%);
    animation: pulse-critical 0.5s ease-in-out infinite;
}

.timer-box.critical .stat-value {
    color: var(--trivia-error);
}

@keyframes pulse-warning {
    0%, 100% { transform: scale(1) translate3d(0, 0, 0); }
    50% { transform: scale(1.05) translate3d(0, 0, 0); }
}

@keyframes pulse-critical {
    0%, 100% { transform: scale(1) translate3d(0, 0, 0); }
    50% { transform: scale(1.1) translate3d(0, 0, 0); }
}

/* Streak animations */
.stat-box .stat-value.streak-pulse {
    animation: streak-pop 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.stat-box .stat-value.streak-break {
    animation: streak-shake 0.5s ease;
}

@keyframes streak-pop {
    0% { transform: scale(1) translate3d(0, 0, 0); }
    50% { transform: scale(1.3) translate3d(0, 0, 0); color: var(--trivia-primary); }
    100% { transform: scale(1) translate3d(0, 0, 0); }
}

@keyframes streak-shake {
    0%, 100% { transform: translateX(0) translate3d(0, 0, 0); }
    25% { transform: translateX(-10px) translate3d(0, 0, 0); }
    75% { transform: translateX(10px) translate3d(0, 0, 0); }
}

/* Points bonus animation */
.points-bonus {
    position: absolute;
    top: -10px;
    right: 0;
    font-size: var(--cal-font-size-lg);
    font-weight: bold;
    color: var(--trivia-success);
    opacity: 0;
    transform: translateY(0) translate3d(0, 0, 0);
    transition: all 1s ease-out;
    pointer-events: none;
}

.points-bonus.fade-up {
    opacity: 1;
    transform: translateY(-40px) translate3d(0, 0, 0);
}

/* ================================================================
   6. CONTAINER DE JEU & QUESTIONS
   ================================================================ */
.trivia-game {
    background: var(--cal-white);
    border-radius: var(--cal-radius-lg);
    padding: var(--cal-spacing-lg);
    box-shadow: var(--cal-shadow-md);
    margin-bottom: var(--cal-spacing-xl);
}

@media (min-width: 768px) {
    .trivia-game {
        padding: var(--cal-spacing-xl);
    }
}

.trivia-question-container {
    min-height: 400px;
    position: relative;
}

.trivia-question {
    display: none;
    animation: fadeInUp 0.3s ease;
}

.trivia-question:first-child {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px) translate3d(0, 0, 0);
    }
    to {
        opacity: 1;
        transform: translateY(0) translate3d(0, 0, 0);
    }
}

.question-number {
    display: inline-block;
    padding: var(--cal-spacing-xs) var(--cal-spacing-md);
    background: var(--trivia-gradient);
    color: var(--cal-white);
    border-radius: var(--cal-radius-xl);
    font-size: var(--cal-font-size-sm);
    font-weight: 600;
    margin-bottom: var(--cal-spacing-lg);
}

.question-text {
    font-size: var(--cal-font-size-lg); /* 18px mobile */
    font-weight: bold;
    color: var(--trivia-text);
    margin-bottom: var(--cal-spacing-xl);
    line-height: 1.4;
}

@media (min-width: 768px) {
    .question-text {
        font-size: var(--cal-font-size-xl); /* 24px desktop */
    }
}

/* ================================================================
   7. OPTIONS DE RÉPONSE - Touch optimisé
   ================================================================ */
.trivia-options {
    display: grid;
    gap: var(--cal-spacing-md);
}

.trivia-option {
    display: flex;
    align-items: center;
    padding: var(--cal-spacing-md);
    min-height: 56px; /* Touch target */
    background: var(--cal-white);
    border: 3px solid var(--trivia-border);
    border-radius: var(--cal-radius-md);
    cursor: pointer;
    transition: var(--cal-transition-base);
    position: relative;
    overflow: hidden;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@media (min-width: 768px) {
    .trivia-option {
        padding: var(--cal-spacing-lg);
    }
}

.trivia-option:hover:not(.correct):not(.incorrect):not([disabled]) {
    border-color: var(--trivia-primary);
    background: linear-gradient(135deg, #fff5f5 0%, var(--cal-white) 100%);
    transform: translateX(5px) translate3d(0, 0, 0);
}

@media (hover: none) {
    .trivia-option:active:not(.correct):not(.incorrect):not([disabled]) {
        opacity: 0.7;
        transform: scale(0.98) translate3d(0, 0, 0);
    }
}

.trivia-option[disabled] {
    cursor: not-allowed;
}

.option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #f1f5f9 0%, var(--trivia-border) 100%);
    color: var(--trivia-text-muted);
    border-radius: var(--cal-radius-sm);
    font-size: var(--cal-font-size-lg);
    font-weight: bold;
    margin-right: var(--cal-spacing-md);
    flex-shrink: 0;
}

.option-text {
    flex: 1;
    font-size: var(--cal-font-size-sm); /* 14px mobile */
    color: var(--trivia-text);
    font-weight: 500;
}

@media (min-width: 768px) {
    .option-text {
        font-size: var(--cal-font-size-base); /* 16px desktop */
    }
}

.option-feedback {
    margin-left: auto;
    font-size: var(--cal-font-size-xl);
    font-weight: bold;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* État correct */
.trivia-option.correct {
    border-color: var(--trivia-success);
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    animation: correctPulse 0.5s ease;
}

.trivia-option.correct .option-letter {
    background: linear-gradient(135deg, var(--trivia-success) 0%, var(--trivia-success-dark) 100%);
    color: var(--cal-white);
}

.trivia-option.correct .option-feedback {
    opacity: 1;
    color: var(--trivia-success);
}

@keyframes correctPulse {
    0%, 100% { transform: scale(1) translate3d(0, 0, 0); }
    50% { transform: scale(1.02) translate3d(0, 0, 0); }
}

/* État incorrect */
.trivia-option.incorrect {
    border-color: var(--trivia-error);
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    animation: incorrectShake 0.5s ease;
}

.trivia-option.incorrect .option-letter {
    background: linear-gradient(135deg, var(--trivia-error) 0%, #dc2626 100%);
    color: var(--cal-white);
}

.trivia-option.incorrect .option-feedback {
    opacity: 1;
    color: var(--trivia-error);
}

@keyframes incorrectShake {
    0%, 100% { transform: translateX(0) translate3d(0, 0, 0); }
    25% { transform: translateX(-10px) translate3d(0, 0, 0); }
    75% { transform: translateX(10px) translate3d(0, 0, 0); }
}

/* Montrer la bonne réponse */
.trivia-option.show-correct {
    border-color: var(--trivia-success);
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 50%, var(--cal-white) 100%);
}

.trivia-option.show-correct .option-letter {
    background: linear-gradient(135deg, var(--trivia-success) 0%, var(--trivia-success-dark) 100%);
    color: var(--cal-white);
}

/* ================================================================
   8. BARRE DE PROGRESSION
   ================================================================ */
.trivia-progress {
    height: var(--cal-spacing-xs);
    background: var(--trivia-border);
    border-radius: var(--cal-radius-sm);
    overflow: hidden;
    margin-top: var(--cal-spacing-xl);
}

.progress-bar {
    height: 100%;
    background: var(--trivia-gradient);
    border-radius: var(--cal-radius-sm);
    transition: width 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    overflow: hidden;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translate3d(0, 0, 0); }
    100% { transform: translateX(100%) translate3d(0, 0, 0); }
}

/* ================================================================
   9. RÉSULTATS
   ================================================================ */
.trivia-results {
    background: var(--cal-white);
    border-radius: var(--cal-radius-lg);
    padding: var(--cal-spacing-lg);
    box-shadow: var(--cal-shadow-md);
    margin-bottom: var(--cal-spacing-xl);
    animation: fadeIn 0.5s ease;
}

@media (min-width: 768px) {
    .trivia-results {
        padding: var(--cal-spacing-2xl);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.results-header {
    text-align: center;
    margin-bottom: var(--cal-spacing-2xl);
}

.results-icon {
    font-size: 60px; /* Mobile */
    margin-bottom: var(--cal-spacing-md);
    animation: bounce 1s ease infinite;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@media (min-width: 768px) {
    .results-icon {
        font-size: 80px;
    }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0) translate3d(0, 0, 0); }
    50% { transform: translateY(-10px) translate3d(0, 0, 0); }
}

.results-header h3 {
    font-size: var(--cal-font-size-xl); /* Mobile */
    font-weight: bold;
    background: var(--trivia-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .results-header h3 {
        font-size: var(--cal-font-size-2xl);
    }
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 2 cols mobile */
    gap: 12px;
}

@media (min-width: 768px) {
    .results-stats {
        grid-template-columns: repeat(4, 1fr); /* 4 cols desktop */
        gap: var(--cal-spacing-lg);
    }
}

.result-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px 12px;
    background: linear-gradient(135deg, var(--trivia-bg-light) 0%, var(--cal-white) 100%);
    border: 2px solid var(--trivia-border);
    border-radius: var(--cal-radius-md);
    transition: var(--cal-transition-base);
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@media (min-width: 768px) {
    .result-card {
        padding: var(--cal-spacing-xl);
        border-radius: var(--cal-radius-lg);
    }
}

.result-card:hover {
    transform: translateY(-5px) translate3d(0, 0, 0);
    box-shadow: var(--cal-shadow-lg);
}

.result-icon {
    font-size: 22px;
    margin-bottom: 6px;
    line-height: 1;
}

@media (min-width: 768px) {
    .result-icon {
        font-size: 40px;
        margin-bottom: var(--cal-spacing-lg);
    }
}

.result-value {
    font-size: 22px;
    font-weight: bold;
    color: var(--trivia-text);
    margin-bottom: 4px;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .result-value {
        font-size: 36px;
        margin-bottom: var(--cal-spacing-sm);
    }
}

.result-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--trivia-text-muted);
    line-height: 1.3;
    text-align: center;
}

@media (min-width: 768px) {
    .result-label {
        font-size: var(--cal-font-size-sm);
        letter-spacing: 0.5px;
    }
}

/* ================================================================
   10. LEADERBOARD
   ================================================================ */
.trivia-leaderboard {
    background: var(--cal-white);
    border-radius: var(--cal-radius-lg);
    padding: var(--cal-spacing-lg);
    box-shadow: var(--cal-shadow-md);
    animation: fadeIn 0.5s ease 0.2s both;
}

@media (min-width: 768px) {
    .trivia-leaderboard {
        padding: var(--cal-spacing-xl);
    }
}

.leaderboard-title {
    font-size: var(--cal-font-size-lg); /* 18px mobile */
    font-weight: bold;
    color: var(--trivia-text);
    margin-bottom: var(--cal-spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--cal-spacing-sm);
}

@media (min-width: 768px) {
    .leaderboard-title {
        font-size: var(--cal-font-size-xl);
    }
}

.title-icon {
    font-size: 28px;
}

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: var(--cal-spacing-sm);
}

.leaderboard-entry {
    display: flex;
    align-items: center;
    gap: var(--cal-spacing-sm);
    padding: 14px var(--cal-spacing-sm);
    min-height: 50px;
    background: linear-gradient(135deg, var(--trivia-bg-light) 0%, var(--cal-white) 100%);
    border: 2px solid var(--trivia-border);
    border-radius: var(--cal-radius-md);
    transition: var(--cal-transition-base);
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@media (min-width: 768px) {
    .leaderboard-entry {
        gap: var(--cal-spacing-md);
        padding: var(--cal-spacing-md);
        min-height: 60px;
    }
}

.leaderboard-entry:hover {
    transform: translateX(5px) translate3d(0, 0, 0);
    box-shadow: var(--cal-shadow-lg);
}

.leaderboard-entry.current-user {
    border-color: var(--trivia-primary);
    background: linear-gradient(135deg, #fff5f5 0%, #ffe4e6 100%);
}

.entry-rank {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f1f5f9 0%, var(--trivia-border) 100%);
    border-radius: var(--cal-radius-sm);
    font-size: 14px;
    font-weight: bold;
    color: var(--trivia-text-muted);
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .entry-rank {
        width: 40px;
        height: 40px;
        font-size: var(--cal-font-size-lg);
    }
}

.leaderboard-entry:nth-child(1) .entry-rank,
.leaderboard-entry:nth-child(2) .entry-rank,
.leaderboard-entry:nth-child(3) .entry-rank {
    background: none;
    font-size: 22px;
}

@media (min-width: 768px) {
    .leaderboard-entry:nth-child(1) .entry-rank,
    .leaderboard-entry:nth-child(2) .entry-rank,
    .leaderboard-entry:nth-child(3) .entry-rank {
        font-size: var(--cal-font-size-xl);
    }
}

.entry-avatar {
    display: none;
}

.entry-name {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
    color: var(--trivia-text);
    display: flex;
    align-items: center;
    gap: var(--cal-spacing-xs);
    line-height: 1.3;
}

@media (min-width: 768px) {
    .entry-name {
        font-size: var(--cal-font-size-base);
    }
}

.you-badge {
    display: inline-block;
    padding: 4px var(--cal-spacing-sm);
    background: var(--trivia-gradient);
    color: var(--cal-white);
    border-radius: var(--cal-radius-md);
    font-size: var(--cal-font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.entry-stats {
    display: flex;
    align-items: center;
    gap: var(--cal-spacing-sm);
    font-size: var(--cal-font-size-sm);
    font-weight: 600;
}

@media (max-width: 767px) {
    .entry-stats {
        flex-direction: row;
        gap: var(--cal-spacing-xs);
        font-size: 12px;
    }
}

.entry-score {
    color: var(--trivia-primary);
}

.entry-time {
    color: var(--trivia-text-muted);
}

.entry-streak {
    color: var(--trivia-secondary);
}

/* ================================================================
   11. LOADER & ERROR
   ================================================================ */
.trivia-loader {
    text-align: center;
    padding: var(--cal-spacing-3xl) var(--cal-spacing-lg);
}

.trivia-loader .spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--cal-spacing-lg);
    border: 6px solid #f1f5f9;
    border-top-color: var(--trivia-primary);
    border-radius: var(--cal-radius-full);
    animation: spin 1s linear infinite;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@keyframes spin {
    to { transform: rotate(360deg) translate3d(0, 0, 0); }
}

.trivia-loader p {
    font-size: var(--cal-font-size-base);
    color: var(--trivia-text-muted);
    font-weight: 500;
}

.trivia-error {
    padding: var(--cal-spacing-md) var(--cal-spacing-lg);
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 2px solid var(--trivia-error);
    border-radius: var(--cal-radius-md);
    color: #dc2626;
    font-weight: 600;
    margin-bottom: var(--cal-spacing-lg);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px) translate3d(0, 0, 0);
    }
    to {
        opacity: 1;
        transform: translateY(0) translate3d(0, 0, 0);
    }
}

/* ================================================================
   12. CONFETTI ANIMATION
   ================================================================ */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--cal-z-confetti);
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    top: -10px;
    opacity: 0;
    animation: confetti-fall 3s ease-out forwards;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@keyframes confetti-fall {
    0% {
        opacity: 1;
        top: -10px;
        transform: translateX(0) rotateZ(0deg) translate3d(0, 0, 0);
    }
    100% {
        opacity: 0;
        top: 100vh;
        transform: translateX(100px) rotateZ(720deg) translate3d(0, 0, 0);
    }
}