/**
 * ================================================================
 * Activité Mystery Box - Mobile-First Architecture
 * Version: 3.16.0
 * ================================================================
 *
 * Boîte mystère 3D avec animations, confettis, modal de révélation
 * 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;

    /* Mystery Box specific colors */
    --mystery-primary: #f093fb;
    --mystery-secondary: var(--cal-danger);
    --mystery-gradient: linear-gradient(135deg, var(--mystery-primary) 0%, var(--mystery-secondary) 100%);
    --mystery-gradient-alt: linear-gradient(135deg, #ff6b95 0%, #ff4d7d 100%);
    --mystery-success: #52de97;
    --mystery-success-dark: #3bb78f;
    --mystery-bg-light: #f8f9fa;

    /* Typography */
    --cal-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --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;
    --cal-font-size-3xl: 48px;

    /* 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;
    --cal-spacing-3xl: 64px;

    /* Shadows */
    --cal-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --cal-shadow-md: 0 2px 10px rgba(0, 0, 0, 0.1);
    --cal-shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.1);
    --cal-shadow-xl: 0 10px 40px rgba(0, 0, 0, 0.2);
    --cal-shadow-2xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    --mystery-shadow-glow: 0 0 30px rgba(240, 147, 251, 0.5);

    /* Border Radius */
    --cal-radius-sm: 8px;
    --cal-radius-md: 12px;
    --cal-radius-lg: 16px;
    --cal-radius-xl: 24px;
    --cal-radius-2xl: 30px;
    --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-modal: 10000;
    --cal-z-modal-overlay: 10001;
    --cal-z-toast: 15000;

    /* Mystery Box sizes */
    --box-size-mobile: 200px;
    --box-size-desktop: 250px;
}

/* ================================================================
   2. CONTAINER PRINCIPAL - Mobile-First
   ================================================================ */
.mystery-box-container {
    max-width: 100%;
    margin: 0 auto;
    padding: var(--cal-spacing-md);
    font-family: var(--cal-font-family);
    box-sizing: border-box;
}

/* Tablet (768px+) */
@media (min-width: 768px) {
    .mystery-box-container {
        max-width: 900px;
        padding: var(--cal-spacing-lg);
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .mystery-box-container {
        padding: var(--cal-spacing-xl);
    }
}

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

.mystery-box-header h2 {
    font-size: var(--cal-font-size-2xl); /* 32px mobile */
    margin-bottom: var(--cal-spacing-md);
    background: var(--mystery-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .mystery-box-header h2 {
        font-size: 2.5em; /* Plus grand desktop */
    }
}

.mystery-box-intro {
    font-size: var(--cal-font-size-lg);
    color: var(--cal-text-muted);
    line-height: 1.6;
}

/* ================================================================
   4. SCÈNE MYSTERY BOX
   ================================================================ */
.mystery-box-scene {
    text-align: center;
    padding: var(--cal-spacing-2xl) var(--cal-spacing-lg);
}

.mystery-box-title h3 {
    font-size: var(--cal-font-size-2xl);
    margin-bottom: var(--cal-spacing-sm);
    color: var(--cal-text);
}

.box-description {
    font-size: var(--cal-font-size-lg);
    color: var(--cal-text-muted);
    margin-bottom: var(--cal-spacing-2xl);
}

/* ================================================================
   5. BOÎTE 3D - Mobile-First avec Variables
   ================================================================ */
.box-3d-wrapper {
    perspective: 1200px;
    margin: var(--cal-spacing-3xl) auto;
    width: var(--box-size-mobile); /* 200px mobile */
    height: var(--box-size-mobile);
}

@media (min-width: 768px) {
    .box-3d-wrapper {
        width: var(--box-size-desktop); /* 250px desktop */
        height: var(--box-size-desktop);
    }
}

.box-3d {
    width: var(--box-size-mobile);
    height: var(--box-size-mobile);
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(-15deg) rotateY(25deg) translate3d(0, 0, 0);
    transition: var(--cal-transition-base);
    cursor: pointer;
    backface-visibility: hidden;
    will-change: transform;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

@media (min-width: 768px) {
    .box-3d {
        width: var(--box-size-desktop);
        height: var(--box-size-desktop);
    }
}

/* Use @media hover for pointer devices only */
@media (hover: hover) {
    .box-3d:hover {
        transform: rotateX(-10deg) rotateY(30deg) scale(1.05);
    }
}

/* Touch feedback for mobile */
.box-3d:active {
    transform: rotateX(-10deg) rotateY(30deg) scale(0.98);
}

.box-face {
    position: absolute;
    width: var(--box-size-mobile);
    height: var(--box-size-mobile);
    background: var(--mystery-gradient);
    border: 3px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3em; /* Mobile */
    box-shadow: var(--mystery-shadow-glow);
    transform: translate3d(0, 0, 0); /* GPU acceleration */
    backface-visibility: hidden;
}

@media (min-width: 768px) {
    .box-face {
        width: var(--box-size-desktop);
        height: var(--box-size-desktop);
        font-size: 4em; /* Desktop */
    }
}

/* Faces 3D - Mobile (100px) / Desktop (125px) */
.box-front {
    transform: translateZ(100px); /* Mobile */
}

.box-back {
    transform: translateZ(-100px) rotateY(180deg);
}

.box-left {
    transform: rotateY(-90deg) translateZ(100px);
}

.box-right {
    transform: rotateY(90deg) translateZ(100px);
}

.box-top {
    transform: rotateX(90deg) translateZ(100px);
    background: var(--mystery-gradient-alt);
}

.box-bottom {
    transform: rotateX(-90deg) translateZ(100px);
}

@media (min-width: 768px) {
    .box-front { transform: translateZ(125px); }
    .box-back { transform: translateZ(-125px) rotateY(180deg); }
    .box-left { transform: rotateY(-90deg) translateZ(125px); }
    .box-right { transform: rotateY(90deg) translateZ(125px); }
    .box-top { transform: rotateX(90deg) translateZ(125px); }
    .box-bottom { transform: rotateX(-90deg) translateZ(125px); }
}

/* ================================================================
   6. ANIMATIONS & ICÔNES
   ================================================================ */
.box-icon {
    font-size: 3em;
    animation: float 3s ease-in-out infinite;
    transform: translate3d(0, 0, 0); /* GPU acceleration */
    backface-visibility: hidden;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translate3d(0, 0, 0); }
    50% { transform: translateY(-15px) translate3d(0, 0, 0); }
}

.box-sparkles {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.sparkle {
    position: absolute;
    font-size: 1.5em;
    animation: sparkle 2s ease-in-out infinite;
}

.sparkle:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.sparkle:nth-child(2) { top: 10%; right: 10%; animation-delay: 0.5s; }
.sparkle:nth-child(3) { bottom: 10%; left: 10%; animation-delay: 1s; }
.sparkle:nth-child(4) { bottom: 10%; right: 10%; animation-delay: 1.5s; }

@keyframes sparkle {
    0%, 100% { opacity: 0; transform: scale(0); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Ruban et noeud */
.ribbon {
    position: absolute;
    background: #ff4d7d;
    transform: translate3d(0, 0, 0); /* GPU acceleration */
    backface-visibility: hidden;
}

.ribbon-horizontal {
    width: 100%;
    height: var(--cal-spacing-xl);
    top: 50%;
    left: 0;
    transform: translateY(-50%) translate3d(0, 0, 0);
}

.ribbon-vertical {
    width: var(--cal-spacing-xl);
    height: 100%;
    left: 50%;
    top: 0;
    transform: translateX(-50%) translate3d(0, 0, 0);
}

.bow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translate3d(0, 0, 0);
    font-size: 3em;
    z-index: 10;
}

/* Animations de la boîte (conservées - nécessaires) */
.shake-animation {
    animation: shake 1s ease-in-out infinite;
}

@keyframes shake {
    0%, 100% { transform: rotateX(-15deg) rotateY(25deg) translateX(0) translate3d(0, 0, 0); }
    25% { transform: rotateX(-15deg) rotateY(25deg) translateX(-10px) rotate(-5deg) translate3d(0, 0, 0); }
    75% { transform: rotateX(-15deg) rotateY(25deg) translateX(10px) rotate(5deg) translate3d(0, 0, 0); }
}

.spin-animation {
    animation: spin-box 1.5s ease-in-out;
}

@keyframes spin-box {
    0% { transform: rotateX(-15deg) rotateY(25deg) translate3d(0, 0, 0); }
    100% { transform: rotateX(1080deg) rotateY(1440deg) translate3d(0, 0, 0); }
}

.explode-animation {
    animation: explode 0.5s ease-out forwards;
}

@keyframes explode {
    0% { transform: scale(1) translate3d(0, 0, 0); opacity: 1; }
    100% { transform: scale(3) translate3d(0, 0, 0); opacity: 0; }
}

/* ================================================================
   7. BOUTON D'OUVERTURE - Touch optimisé
   ================================================================ */
.open-box-btn {
    padding: var(--cal-spacing-lg) var(--cal-spacing-2xl);
    min-height: 56px; /* Touch target > 44px */
    font-size: 1.3em;
    font-weight: 700;
    color: var(--cal-white);
    background: var(--mystery-gradient);
    border: none;
    border-radius: var(--cal-radius-full);
    cursor: pointer;
    transition: var(--cal-transition-base);
    box-shadow: 0 10px 30px rgba(240, 147, 251, 0.4);
    display: inline-flex;
    align-items: center;
    gap: var(--cal-spacing-sm);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    transform: translate3d(0, 0, 0); /* GPU acceleration */
    backface-visibility: hidden;
}

.open-box-btn:hover {
    transform: translateY(-3px) translate3d(0, 0, 0);
    box-shadow: 0 15px 40px rgba(240, 147, 251, 0.6);
}

.open-box-btn:active {
    transform: translateY(0) translate3d(0, 0, 0);
}

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

.open-box-btn.opening {
    animation: pulse 1s ease-in-out infinite;
}

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

@media (hover: none) {
    .open-box-btn:active {
        opacity: 0.7;
        transform: scale(0.97) translate3d(0, 0, 0);
    }
}

.btn-icon {
    font-size: 1.2em;
}

/* Hint */
.box-hint {
    margin-top: var(--cal-spacing-xl);
    display: inline-flex;
    align-items: center;
    gap: var(--cal-spacing-xs);
    padding: var(--cal-spacing-sm) var(--cal-spacing-lg);
    background: rgba(240, 147, 251, 0.1);
    border-radius: var(--cal-radius-xl);
    color: var(--mystery-secondary);
    font-weight: 600;
}

.hint-icon {
    font-size: 1.3em;
}

/* ================================================================
   8. MODAL DE RÉVÉLATION - Safe areas iOS
   ================================================================ */
.reward-reveal-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--cal-z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* Safe areas iOS */
@supports (padding: max(0px)) {
    .reward-reveal-modal {
        padding-top: max(var(--cal-spacing-md), env(safe-area-inset-top));
        padding-bottom: max(var(--cal-spacing-md), env(safe-area-inset-bottom));
        padding-left: max(var(--cal-spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--cal-spacing-md), env(safe-area-inset-right));
    }
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    z-index: var(--cal-z-modal-overlay);
    width: 90%;
    max-width: 500px;
}

/* Confettis (conservé - nécessaire) */
.confetti-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    top: -20px;
    opacity: 1;
    animation: confetti-fall 3s ease-out forwards;
    transform: translate3d(0, 0, 0); /* GPU acceleration */
    backface-visibility: hidden;
}

@keyframes confetti-fall {
    0% {
        top: -20px;
        opacity: 1;
        transform: rotate(0deg) translate3d(0, 0, 0);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: rotate(720deg) translate3d(0, 0, 0);
    }
}

/* ================================================================
   9. CARTE DE RÉCOMPENSE
   ================================================================ */
.reward-card {
    background: var(--cal-white);
    border-radius: var(--cal-radius-2xl);
    padding: var(--cal-spacing-3xl) var(--cal-spacing-2xl);
    text-align: center;
    box-shadow: var(--cal-shadow-2xl);
    transform: scale(0) translate3d(0, 0, 0);
    opacity: 0;
    transition: var(--cal-transition-slow);
    backface-visibility: hidden;
}

.reward-card.reveal {
    transform: scale(1) translate3d(0, 0, 0);
    opacity: 1;
}

.reward-icon-large {
    font-size: 6em;
    margin-bottom: var(--cal-spacing-lg);
    animation: bounce-in 1s ease-out;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@keyframes bounce-in {
    0% { transform: scale(0) translate3d(0, 0, 0); }
    50% { transform: scale(1.2) translate3d(0, 0, 0); }
    100% { transform: scale(1) translate3d(0, 0, 0); }
}

.reward-title {
    font-size: 2.5em;
    margin: 0 0 var(--cal-spacing-lg) 0;
    background: var(--mystery-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.reward-label {
    font-size: 1.3em;
    color: var(--cal-text-muted);
    margin-bottom: var(--cal-spacing-lg);
}

.reward-details {
    margin: var(--cal-spacing-xl) 0;
    padding: var(--cal-spacing-lg);
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.1) 0%, rgba(245, 87, 108, 0.1) 100%);
    border-radius: var(--cal-radius-lg);
}

.reward-points,
.reward-multiplier,
.reward-badge,
.reward-text {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--mystery-secondary);
}

.points-value,
.multiplier-value {
    font-size: 2em;
    display: inline-block;
    margin: 0 5px;
}

.claim-reward-btn {
    padding: var(--cal-spacing-lg) var(--cal-spacing-2xl);
    min-height: 56px; /* Touch target > 44px */
    font-size: var(--cal-font-size-lg);
    font-weight: 700;
    color: var(--cal-white);
    background: var(--mystery-gradient);
    border: none;
    border-radius: var(--cal-radius-full);
    cursor: pointer;
    transition: var(--cal-transition-base);
    box-shadow: 0 10px 30px rgba(240, 147, 251, 0.4);
    display: inline-flex;
    align-items: center;
    gap: var(--cal-spacing-sm);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

.claim-reward-btn:hover {
    transform: translateY(-3px) translate3d(0, 0, 0);
    box-shadow: 0 15px 40px rgba(240, 147, 251, 0.6);
}

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

.claim-reward-btn.claiming {
    animation: pulse 1s ease-in-out infinite;
}

@media (hover: none) {
    .claim-reward-btn:active {
        opacity: 0.7;
        transform: scale(0.97) translate3d(0, 0, 0);
    }
}

/* ================================================================
   10. SECTION RÉCOMPENSE RÉCLAMÉE
   ================================================================ */
.reward-claimed-section {
    text-align: center;
    padding: var(--cal-spacing-2xl) var(--cal-spacing-lg);
}

.claimed-box-visual {
    margin: var(--cal-spacing-2xl) auto var(--cal-spacing-3xl);
    width: 300px;
}

.opened-box {
    position: relative;
    width: 300px;
    height: 250px;
}

.box-lid {
    width: 100%;
    height: 80px;
    background: var(--mystery-gradient);
    border-radius: var(--cal-radius-md) var(--cal-radius-md) 0 0;
    position: absolute;
    top: -20px;
    left: 0;
    transform: rotateX(-45deg) translate3d(0, 0, 0);
    transform-origin: bottom;
    box-shadow: 0 10px 30px rgba(240, 147, 251, 0.4);
    animation: lid-open 1s ease-out;
    backface-visibility: hidden;
}

@keyframes lid-open {
    0% { transform: rotateX(0deg) translate3d(0, 0, 0); top: 0; }
    100% { transform: rotateX(-45deg) translate3d(0, 0, 0); top: -20px; }
}

.box-body {
    width: 100%;
    height: 200px;
    background: var(--mystery-gradient-alt);
    border-radius: 0 0 var(--cal-radius-md) var(--cal-radius-md);
    position: absolute;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(240, 147, 251, 0.3);
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

.reward-floating {
    animation: float 3s ease-in-out infinite;
}

.reward-icon-claimed {
    font-size: 5em;
}

/* ===== Info Récompense Réclamée ===== */
.claimed-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--cal-spacing-xs);
    padding: var(--cal-spacing-sm) var(--cal-spacing-lg);
    background: linear-gradient(135deg, var(--mystery-success) 0%, var(--mystery-success-dark) 100%);
    color: var(--cal-white);
    border-radius: var(--cal-radius-xl);
    font-weight: 700;
    margin-bottom: var(--cal-spacing-lg);
    box-shadow: 0 5px 20px rgba(82, 222, 151, 0.3);
}

.claimed-title {
    font-size: 2.2em;
    margin: var(--cal-spacing-lg) 0;
    color: var(--cal-text);
}

.claimed-reward-card {
    background: white;
    border-radius: 25px;
    padding: 40px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 30px;
}

.claimed-reward-icon {
    font-size: 5em;
    flex-shrink: 0;
}

.claimed-reward-content {
    text-align: left;
    flex: 1;
}

.claimed-reward-content h4 {
    font-size: 1.8em;
    margin: 0 0 10px 0;
    color: var(--mystery-secondary);
}

.reward-value,
.reward-message,
.reward-multiplier,
.reward-badge-name {
    font-size: 1.2em;
    color: #666;
    margin-bottom: 15px;
}

.claimed-date {
    font-size: 0.9em;
    color: #999;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ================================================================
   11. HISTORIQUE
   ================================================================ */
.mystery-box-history {
    margin-top: var(--cal-spacing-3xl);
    padding: var(--cal-spacing-2xl);
    background: var(--mystery-bg-light);
    border-radius: var(--cal-radius-xl);
}

.history-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--cal-spacing-md);
    font-size: var(--cal-font-size-2xl);
    margin-bottom: var(--cal-spacing-xl);
    text-align: center;
}

.refresh-history-btn {
    display: block;
    margin: 0 auto var(--cal-spacing-xl);
    padding: var(--cal-spacing-sm) var(--cal-spacing-lg);
    min-height: 44px; /* iOS touch target */
    font-size: var(--cal-font-size-base);
    font-weight: 600;
    color: var(--mystery-secondary);
    background: var(--cal-white);
    border: 2px solid var(--mystery-secondary);
    border-radius: var(--cal-radius-xl);
    cursor: pointer;
    transition: var(--cal-transition-base);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.refresh-history-btn:hover {
    background: var(--mystery-secondary);
    color: var(--cal-white);
}

@media (hover: none) {
    .refresh-history-btn:active {
        opacity: 0.7;
        transform: scale(0.97) translate3d(0, 0, 0);
    }
}

.history-list-container {
    position: relative;
    min-height: 150px;
}

.history-items {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.history-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.history-item-icon {
    font-size: 2.5em;
    flex-shrink: 0;
}

.history-item-content {
    flex: 1;
}

.history-item-user {
    font-weight: 700;
    color: #333;
    margin-bottom: 5px;
}

.history-item-reward {
    color: var(--mystery-secondary);
    font-weight: 600;
}

.history-item-time {
    font-size: 0.9em;
    color: #999;
}

.empty-history {
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 1.1em;
}

/* ================================================================
   12. LOADING SPINNER
   ================================================================ */
.loading-spinner {
    display: none;
    text-align: center;
    padding: var(--cal-spacing-2xl);
}

.spinner,
.spinner-small {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--cal-spacing-md);
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--mystery-secondary);
    border-radius: var(--cal-radius-full);
    animation: spin 1s linear infinite;
    transform: translate3d(0, 0, 0); /* GPU acceleration */
    backface-visibility: hidden;
}

.spinner-small {
    width: 20px;
    height: 20px;
    margin: 0;
    border-width: 3px;
}

@keyframes spin {
    0% { transform: rotate(0deg) translate3d(0, 0, 0); }
    100% { transform: rotate(360deg) translate3d(0, 0, 0); }
}

/* ================================================================
   13. SUCCESS OVERLAY - Safe areas iOS
   ================================================================ */
.success-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: var(--cal-z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

@supports (padding: max(0px)) {
    .success-overlay {
        padding-top: max(var(--cal-spacing-md), env(safe-area-inset-top));
        padding-bottom: max(var(--cal-spacing-md), env(safe-area-inset-bottom));
        padding-left: max(var(--cal-spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--cal-spacing-md), env(safe-area-inset-right));
    }
}

.success-content {
    background: var(--cal-white);
    padding: var(--cal-spacing-3xl) var(--cal-spacing-2xl);
    border-radius: var(--cal-radius-2xl);
    text-align: center;
    max-width: 500px;
    width: 90%;
}

.success-icon {
    width: 100px;
    height: 100px;
    line-height: 100px;
    margin: 0 auto var(--cal-spacing-xl);
    background: linear-gradient(135deg, var(--mystery-success) 0%, var(--mystery-success-dark) 100%);
    color: var(--cal-white);
    border-radius: var(--cal-radius-full);
    font-size: 4em;
    font-weight: 700;
}

.success-content h3 {
    font-size: 2.5em;
    margin: 0 0 var(--cal-spacing-md) 0;
    color: var(--cal-text);
}

.success-content p {
    font-size: var(--cal-font-size-lg);
    color: var(--cal-text-muted);
}

/* ================================================================
   14. NOTIFICATIONS TOAST - Safe areas iOS
   ================================================================ */
.mystery-box-notification {
    position: fixed;
    top: var(--cal-spacing-lg);
    right: var(--cal-spacing-lg);
    padding: var(--cal-spacing-md) var(--cal-spacing-lg);
    background: var(--cal-white);
    border-radius: var(--cal-radius-md);
    box-shadow: var(--cal-shadow-xl);
    transform: translate3d(400px, 0, 0);
    transition: var(--cal-transition-base);
    z-index: var(--cal-z-toast);
    max-width: 400px;
    font-weight: 600;
    backface-visibility: hidden;
}

@supports (padding: max(0px)) {
    .mystery-box-notification {
        top: max(var(--cal-spacing-lg), env(safe-area-inset-top));
        right: max(var(--cal-spacing-lg), env(safe-area-inset-right));
    }
}

.mystery-box-notification.show {
    transform: translate3d(0, 0, 0);
}

.mystery-box-notification.success {
    border-left: 5px solid var(--mystery-success);
}

.mystery-box-notification.error {
    border-left: 5px solid #ff6b6b;
}

/* ================================================================
   15. RESPONSIVE - Mobile-First (déjà implémenté ci-dessus)
   ================================================================
   Base mobile (<768px) : box 200px, font-size réduits
   Tablet (768px+) : box 250px, font-size moyens
   Desktop (1024px+) : padding augmentés

   Toutes les media queries mobile-first sont intégrées dans chaque section
   ================================================================ */

/* Ajustements spécifiques desktop pour claimed-reward-card */
@media (max-width: 767px) {
    .claimed-reward-card {
        flex-direction: column;
        text-align: center;
    }

    .claimed-reward-content {
        text-align: center;
    }

    /* Notification mobile slide depuis le haut */
    .mystery-box-notification {
        left: var(--cal-spacing-sm);
        right: var(--cal-spacing-sm);
        top: var(--cal-spacing-lg);
        transform: translateY(-100px) translate3d(0, 0, 0);
    }

    .mystery-box-notification.show {
        transform: translateY(0) translate3d(0, 0, 0);
    }

    @supports (padding: max(0px)) {
        .mystery-box-notification {
            top: max(var(--cal-spacing-lg), env(safe-area-inset-top));
            left: max(var(--cal-spacing-sm), env(safe-area-inset-left));
            right: max(var(--cal-spacing-sm), env(safe-area-inset-right));
        }
    }
}