/* ============================================
   SOLO LEVELING FITNESS SYSTEM v3.0 - CSS
   STYLE CYBERPUNK NÉON
   ============================================ */

/* Variables CSS - Palette Cyberpunk */
:root {
    /* Couleurs néon cyberpunk */
    --neon-cyan: #00ffff;
    --neon-pink: #ff00ff;
    --neon-purple: #bf00ff;
    --neon-blue: #00d4ff;
    --neon-green: #00ff88;
    --neon-yellow: #ffff00;
    --neon-orange: #ff6600;
    --neon-red: #ff0055;

    /* Rangs avec couleurs néon */
    --rank-e: #c0c0c0;
    --rank-e-glow: rgba(192, 192, 192, 0.8);
    --rank-d: #00ffff;
    --rank-d-glow: rgba(0, 255, 255, 0.9);
    --rank-c: #00d4ff;
    --rank-c-glow: rgba(0, 212, 255, 0.9);
    --rank-b: #bf00ff;
    --rank-b-glow: rgba(191, 0, 255, 0.9);
    --rank-a: #ff6600;
    --rank-a-glow: rgba(255, 102, 0, 0.9);
    --rank-s: #ff0055;
    --rank-s-glow: rgba(255, 0, 85, 1);
    --rank-s-gold: #ffd700;

    --bg-dark: #0a0a0f;
    --bg-panel: rgba(10, 10, 25, 0.95);
    --border-color: rgba(0, 255, 255, 0.2);
    --text-primary: #ffffff;
    --text-secondary: rgba(200, 220, 255, 0.8);

    --success: #00ff88;
    --warning: #ffaa00;
    --danger: #ff0055;
}

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

body {
    font-family: 'Roboto Mono', monospace;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    /* Fond cyberpunk avec grille */
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(0, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(255, 0, 255, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 50px 50px, 50px 50px;
}

/* Effet de scan ligne */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            rgba(0, 255, 255, 0.01) 2px,
            rgba(0, 255, 255, 0.01) 4px);
    pointer-events: none;
    z-index: 9998;
    animation: scanlines 10s linear infinite;
}

@keyframes scanlines {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 0 100px;
    }
}

/* Mode Repos (Dimanche) */
body.rest-mode {
    background-image:
        radial-gradient(ellipse at center, rgba(191, 0, 255, 0.15) 0%, transparent 60%),
        linear-gradient(180deg, rgba(191, 0, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(191, 0, 255, 0.02) 1px, transparent 1px);
    background-size: 100% 100%, 50px 50px, 50px 50px;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    padding: 20px 0;
    animation: fadeInDown 0.8s ease-out;
}

.header-logo {
    width: 100px;
    height: 100px;
    margin-bottom: 15px;
    filter: drop-shadow(0 0 15px var(--neon-cyan)) drop-shadow(0 0 30px var(--neon-pink));
    animation: logo-pulse 3s ease-in-out infinite;
}

@keyframes logo-pulse {

    0%,
    100% {
        filter: drop-shadow(0 0 15px var(--neon-cyan)) drop-shadow(0 0 30px rgba(0, 255, 255, 0.5));
        transform: scale(1);
    }

    50% {
        filter: drop-shadow(0 0 25px var(--neon-pink)) drop-shadow(0 0 50px rgba(255, 0, 255, 0.6));
        transform: scale(1.02);
    }
}

.system-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 8px;
    margin-bottom: 5px;
    text-shadow:
        0 0 10px var(--neon-cyan),
        0 0 20px var(--neon-cyan),
        0 0 40px var(--neon-cyan);
}

.bracket {
    color: var(--neon-cyan);
    text-shadow:
        0 0 5px var(--neon-cyan),
        0 0 10px var(--neon-cyan),
        0 0 20px var(--neon-cyan),
        0 0 40px var(--neon-cyan);
    animation: neon-flicker 3s infinite;
}

@keyframes neon-flicker {

    0%,
    19%,
    21%,
    23%,
    25%,
    54%,
    56%,
    100% {
        opacity: 1;
        text-shadow:
            0 0 5px var(--neon-cyan),
            0 0 10px var(--neon-cyan),
            0 0 20px var(--neon-cyan);
    }

    20%,
    24%,
    55% {
        opacity: 0.8;
        text-shadow: none;
    }
}

.title-text {
    color: var(--text-primary);
    text-shadow:
        0 0 10px rgba(255, 255, 255, 0.5),
        0 0 30px var(--neon-pink);
}

.subtitle {
    font-size: 0.75rem;
    color: var(--neon-pink);
    letter-spacing: 4px;
    margin-bottom: 8px;
    text-shadow: 0 0 10px var(--neon-pink);
}

.day-display {
    font-size: 0.7rem;
    color: var(--neon-cyan);
    letter-spacing: 3px;
    text-shadow: 0 0 10px var(--rank-d-glow);
}

/* Mode Repos */
.rest-mode {
    background: linear-gradient(135deg, rgba(80, 50, 120, 0.3), rgba(30, 20, 50, 0.8));
    border: 2px solid rgba(150, 100, 200, 0.5);
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    margin-bottom: 25px;
    animation: floatIn 0.8s ease-out;
}

.rest-icon {
    font-size: 4rem;
    margin-bottom: 15px;
    animation: moonGlow 3s ease-in-out infinite;
}

.rest-title {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: #c0a0ff;
    text-shadow: 0 0 20px rgba(192, 160, 255, 0.6);
    margin-bottom: 15px;
}

.rest-message {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.rest-bonus {
    color: var(--rank-s-gold);
    font-weight: 700;
}

/* Streak Display */
.streak-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, rgba(255, 100, 0, 0.1), rgba(255, 50, 0, 0.05));
    border: 1px solid rgba(255, 100, 0, 0.3);
    border-radius: 8px;
    padding: 12px 20px;
    margin-bottom: 20px;
}

.streak-display.no-streak {
    opacity: 0.5;
    background: rgba(50, 50, 50, 0.3);
    border-color: rgba(100, 100, 100, 0.3);
}

.streak-flame {
    font-size: 2rem;
    animation: flameFlicker 0.5s ease-in-out infinite alternate;
}

.streak-display.no-streak .streak-flame {
    animation: none;
    opacity: 0.3;
}

.streak-info {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.streak-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--rank-a);
    text-shadow: 0 0 15px var(--rank-a-glow);
}

.streak-label {
    font-size: 0.6rem;
    color: var(--text-secondary);
    letter-spacing: 2px;
}

.streak-bonus {
    font-size: 0.7rem;
    color: var(--success);
    font-weight: 700;
    padding: 4px 8px;
    background: rgba(0, 255, 0, 0.1);
    border-radius: 4px;
}

/* Stat Window */
.stat-window {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 20px;
    animation: fadeIn 0.6s ease-out 0.2s backwards;
    position: relative;
    overflow: hidden;
}

.stat-window::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--rank-d), transparent);
    animation: scanline 3s linear infinite;
}

/* Affichage du Rang */
.rank-display {
    text-align: center;
    margin-bottom: 20px;
}

.rank-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    letter-spacing: 3px;
    margin-bottom: 8px;
}

.rank-letter {
    font-size: 5rem;
    font-weight: 700;
    line-height: 1;
    transition: all 0.5s ease;
    animation: pulse 2s ease-in-out infinite;
}

.rank-name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 2px;
    margin-top: 5px;
}

/* Classes de couleur pour chaque rang */
.rank-e {
    color: var(--rank-e);
    text-shadow: 0 0 30px var(--rank-e-glow), 0 0 60px var(--rank-e-glow);
}

.rank-d {
    color: var(--rank-d);
    text-shadow: 0 0 30px var(--rank-d-glow), 0 0 60px var(--rank-d-glow);
}

.rank-c {
    color: var(--rank-c);
    text-shadow: 0 0 30px var(--rank-c-glow), 0 0 60px var(--rank-c-glow);
}

.rank-b {
    color: var(--rank-b);
    text-shadow: 0 0 30px var(--rank-b-glow), 0 0 60px var(--rank-b-glow);
}

.rank-a {
    color: var(--rank-a);
    text-shadow: 0 0 30px var(--rank-a-glow), 0 0 60px var(--rank-a-glow);
}

.rank-s {
    color: var(--rank-s);
    text-shadow: 0 0 40px var(--rank-s-glow), 0 0 80px var(--rank-s-glow), 0 0 120px var(--rank-s-glow);
    animation: pulse-intense 1.5s ease-in-out infinite;
}

/* Grille des Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 20px;
}

.stat-box {
    background: rgba(30, 30, 50, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 6px;
    text-align: center;
}

.stat-label {
    font-size: 0.55rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--rank-d);
    text-shadow: 0 0 10px var(--rank-d-glow);
}

/* Barre d'XP */
.xp-section {
    margin-bottom: 15px;
}

.xp-label,
.volume-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.xp-bar,
.volume-bar {
    height: 10px;
    background: rgba(30, 30, 50, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.xp-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--rank-d), var(--rank-c));
    box-shadow: 0 0 15px var(--rank-d-glow);
    transition: width 0.5s ease-out;
    position: relative;
}

.xp-fill::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;
}

/* Volume d'entraînement */
.volume-section {
    margin-top: 10px;
}

.volume-fill {
    height: 100%;
    transition: width 0.5s ease-out, background 0.3s ease;
}

.volume-fill.normal {
    background: linear-gradient(90deg, #00cc00, #00ff00);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.5);
}

.volume-fill.warning {
    background: linear-gradient(90deg, #ff9900, #ffcc00);
    box-shadow: 0 0 15px rgba(255, 153, 0, 0.6);
}

.volume-fill.danger {
    background: linear-gradient(90deg, #ff3300, #ff0000);
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.7);
    animation: dangerPulse 1s ease-in-out infinite;
}

.volume-status {
    font-size: 0.6rem;
    text-align: right;
    margin-top: 4px;
    letter-spacing: 1px;
}

.volume-status.normal {
    color: var(--success);
}

.volume-status.warning {
    color: var(--warning);
}

.volume-status.danger {
    color: var(--danger);
}

/* Section Quêtes */
.quests-section,
.bonus-section {
    margin-bottom: 20px;
    animation: fadeIn 0.6s ease-out 0.4s backwards;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.8rem;
    letter-spacing: 2px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.quest-counter {
    background: rgba(0, 212, 255, 0.2);
    color: var(--rank-d);
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.7rem;
}

.bonus-header {
    color: var(--rank-s-gold);
}

.bonus-tag {
    background: rgba(255, 215, 0, 0.2);
    color: var(--rank-s-gold);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 700;
}

.quests-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
    animation: blink 1.5s infinite;
}

/* Carte de Quête - Style Cyberpunk */
.quest-card {
    background: linear-gradient(135deg, rgba(10, 10, 30, 0.95), rgba(20, 10, 40, 0.9));
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow:
        0 0 10px rgba(0, 255, 255, 0.1),
        inset 0 0 20px rgba(0, 0, 0, 0.5);
}

.quest-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    transition: all 0.3s ease;
}

/* Effet de brillance au hover */
.quest-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg,
            transparent 40%,
            rgba(0, 255, 255, 0.03) 50%,
            transparent 60%);
    transform: rotate(45deg);
    transition: all 0.5s ease;
    opacity: 0;
}

.quest-card:hover {
    transform: translateY(-3px);
    box-shadow:
        0 0 20px rgba(0, 255, 255, 0.3),
        0 0 40px rgba(0, 255, 255, 0.1),
        inset 0 0 20px rgba(0, 0, 0, 0.5);
}

.quest-card:hover::after {
    opacity: 1;
    animation: shine 1.5s ease;
}

@keyframes shine {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

.quest-card.bonus-quest {
    border-style: dashed;
    background: linear-gradient(135deg, rgba(20, 10, 30, 0.95), rgba(40, 10, 50, 0.9));
}

/* Couleurs de bordure par rang */
.quest-rank-e {
    border-color: var(--rank-e);
}

.quest-rank-e::before {
    background: var(--rank-e);
    box-shadow: 0 0 15px var(--rank-e-glow);
}

.quest-rank-d {
    border-color: var(--rank-d);
}

.quest-rank-d::before {
    background: var(--rank-d);
    box-shadow: 0 0 15px var(--rank-d-glow);
}

.quest-rank-c {
    border-color: var(--rank-c);
}

.quest-rank-c::before {
    background: var(--rank-c);
    box-shadow: 0 0 15px var(--rank-c-glow);
}

.quest-rank-b {
    border-color: var(--rank-b);
}

.quest-rank-b::before {
    background: var(--rank-b);
    box-shadow: 0 0 20px var(--rank-b-glow);
}

.quest-rank-a {
    border-color: var(--rank-a);
}

.quest-rank-a::before {
    background: var(--rank-a);
    box-shadow: 0 0 25px var(--rank-a-glow);
}

.quest-rank-s {
    border-color: var(--rank-s);
    animation: glow-pulse 2s ease-in-out infinite;
}

.quest-rank-s::before {
    background: linear-gradient(180deg, var(--rank-s), var(--rank-s-gold));
    box-shadow: 0 0 30px var(--rank-s-glow);
}

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

.quest-rank-badge {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    letter-spacing: 2px;
}

.quest-xp {
    font-size: 0.7rem;
    color: var(--rank-s-gold);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.quest-content {
    margin-bottom: 12px;
}

.quest-exercise {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 3px;
    color: var(--text-primary);
}

.quest-quantity {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.quest-button {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 2px solid currentColor;
    border-radius: 6px;
    color: inherit;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.quest-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.quest-button:hover::before {
    left: 100%;
}

.quest-button:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.02);
}

.quest-button:active {
    transform: scale(0.98);
}

/* Quête Complétée */

.quest-format-hint {
    font-size: 0.75rem;
    color: #66d9ff;
    font-style: italic;
    margin-top: 0.5rem;
    opacity: 0.8;
    text-align: center;
}

.quest-card.completed {
    opacity: 0.4;
    filter: grayscale(0.7);
}

.quest-card.completed .quest-button {
    cursor: not-allowed;
    opacity: 0.5;
}

.quest-card.completed::after {
    content: '✓ COMPLÉTÉ';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-5deg);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--success);
    text-shadow: 0 0 20px rgba(0, 255, 0, 0.8);
    letter-spacing: 4px;
    pointer-events: none;
}

/* Stats Totales */
.total-stats {
    display: flex;
    justify-content: space-around;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 20px;
}

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

.total-label {
    font-size: 0.6rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 3px;
}

.total-value {
    font-size: 0.9rem;
    color: var(--rank-d);
    font-weight: 700;
}

/* Alertes Système */
.system-alert,
.levelup-alert {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.hidden {
    display: none !important;
}

.alert-content {
    background: var(--bg-panel);
    border: 2px solid var(--rank-d);
    border-radius: 12px;
    padding: 25px;
    max-width: 320px;
    text-align: center;
    animation: alertPopIn 0.4s ease-out;
    box-shadow: 0 0 50px var(--rank-d-glow);
}

.alert-content.warning {
    border-color: var(--warning);
    box-shadow: 0 0 50px rgba(255, 170, 0, 0.5);
}

.alert-content.danger {
    border-color: var(--danger);
    box-shadow: 0 0 50px rgba(255, 50, 50, 0.5);
}

.alert-content.penalty {
    border-color: var(--rank-s);
    box-shadow: 0 0 50px var(--rank-s-glow);
}

.alert-header {
    margin-bottom: 15px;
}

.alert-icon {
    font-size: 1.8rem;
    display: block;
    margin-bottom: 8px;
    animation: flash 0.5s ease-in-out 3;
}

.alert-title {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--rank-d);
    text-shadow: 0 0 15px var(--rank-d-glow);
}

.alert-message {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--text-primary);
    white-space: pre-line;
}

.alert-close {
    padding: 10px 35px;
    background: transparent;
    border: 2px solid var(--rank-d);
    border-radius: 6px;
    color: var(--rank-d);
    font-family: 'Roboto Mono', monospace;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.alert-close:hover {
    background: var(--rank-d);
    color: var(--bg-dark);
    box-shadow: 0 0 20px var(--rank-d-glow);
}

/* Level Up Alert */
.levelup-content {
    text-align: center;
    animation: levelUpAnimation 0.6s ease-out;
}

.levelup-icon {
    font-size: 4rem;
    color: var(--rank-s-gold);
    text-shadow: 0 0 40px rgba(255, 215, 0, 0.8);
    animation: bounce 0.6s ease-in-out infinite;
}

.levelup-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 6px;
    color: var(--rank-s-gold);
    text-shadow: 0 0 30px rgba(255, 215, 0, 0.8);
    margin: 15px 0;
}

.levelup-level {
    font-size: 1.3rem;
    color: var(--text-primary);
    letter-spacing: 3px;
}

.levelup-rank {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.levelup-rank .rank-letter {
    font-size: 2.5rem;
    display: block;
    margin-top: 8px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 15px 0;
    margin-top: auto;
}

.footer-text {
    font-size: 0.65rem;
    color: var(--text-secondary);
    letter-spacing: 2px;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes floatIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

@keyframes pulse-intense {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.9;
        transform: scale(1.05);
    }
}

@keyframes glow-pulse {

    0%,
    100% {
        box-shadow: 0 0 20px var(--rank-s-glow);
    }

    50% {
        box-shadow: 0 0 40px var(--rank-s-glow), 0 0 60px var(--rank-s-glow);
    }
}

@keyframes scanline {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

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

    100% {
        transform: translateX(200%);
    }
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

@keyframes flameFlicker {
    0% {
        transform: scale(1) rotate(-3deg);
    }

    100% {
        transform: scale(1.1) rotate(3deg);
    }
}

@keyframes moonGlow {

    0%,
    100% {
        text-shadow: 0 0 20px rgba(192, 160, 255, 0.5);
    }

    50% {
        text-shadow: 0 0 40px rgba(192, 160, 255, 0.8);
    }
}

@keyframes dangerPulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

@keyframes alertPopIn {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(-20px);
    }

    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes levelUpAnimation {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }

    50% {
        transform: scale(1.1);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

@keyframes flash {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.2;
    }
}

/* Responsive */
@media (max-width: 400px) {
    .container {
        padding: 12px;
    }

    .system-title {
        font-size: 1.4rem;
        letter-spacing: 4px;
    }

    .rank-letter {
        font-size: 4rem;
    }

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

    .stat-value {
        font-size: 0.95rem;
    }

    .quest-exercise {
        font-size: 0.9rem;
    }

    .auth-box {
        padding: 25px 20px;
    }
}

/* ============================================
   PAGES D'AUTHENTIFICATION
   ============================================ */

.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 400px;
    animation: fadeIn 0.6s ease-out;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-box {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 35px 30px;
    position: relative;
    overflow: hidden;
}

.auth-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--rank-d), var(--rank-b), var(--rank-d));
}

.auth-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 20px;
    display: block;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
}

.form-group input {
    background: rgba(30, 30, 50, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px 15px;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--rank-d);
    box-shadow: 0 0 15px var(--rank-d-glow);
}

.form-group input::placeholder {
    color: rgba(150, 150, 180, 0.5);
}

.auth-button {
    margin-top: 10px;
    padding: 14px;
    background: linear-gradient(135deg, var(--rank-d), var(--rank-c));
    border: none;
    border-radius: 6px;
    color: var(--bg-dark);
    font-family: 'Roboto Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.auth-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 25px var(--rank-d-glow);
}

.auth-button:active {
    transform: translateY(0);
}

.auth-switch {
    text-align: center;
    margin-top: 25px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--rank-d);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.auth-switch a:hover {
    text-shadow: 0 0 10px var(--rank-d-glow);
}

.auth-footer {
    text-align: center;
    margin-top: 25px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.flash-message {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 0.8rem;
    text-align: center;
}

.flash-message.error {
    background: rgba(255, 50, 50, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.flash-message.success {
    background: rgba(0, 255, 0, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
}

/* User Header */
.user-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    font-size: 1.5rem;
}

.user-name {
    font-size: 0.85rem;
    color: var(--rank-d);
    font-weight: 700;
    text-shadow: 0 0 10px var(--rank-d-glow);
}

.logout-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--danger);
    border-radius: 4px;
    color: var(--danger);
    font-family: 'Roboto Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.logout-btn:hover {
    background: var(--danger);
    color: var(--bg-dark);
}

/* Notification Prompt Button */
.notif-prompt-btn {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 165, 0, 0.05));
    border: 1px dashed rgba(255, 215, 0, 0.5);
    border-radius: 8px;
    color: var(--rank-s-gold);
    font-family: 'Roboto Mono', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: fadeIn 0.6s ease-out;
}

.notif-prompt-btn:hover {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 165, 0, 0.1));
    border-style: solid;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
}

/* ============================================
   PROFILE PAGE v4.0
   ============================================ */

.nav-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.nav-tab {
    flex: 1;
    padding: 12px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    text-align: center;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.nav-tab:hover,
.nav-tab.active {
    border-color: var(--rank-d);
    color: var(--rank-d);
    box-shadow: 0 0 10px var(--rank-d-glow);
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 20px;
}

.profile-avatar {
    font-size: 4rem;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 2px solid var(--rank-d);
    border-radius: 50%;
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--rank-d);
    text-shadow: 0 0 15px var(--rank-d-glow);
}

.profile-rank,
.profile-level {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.stat-icon {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.stat-num {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--rank-d);
}

.stat-label {
    font-size: 0.6rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.section-title {
    font-size: 0.9rem;
    letter-spacing: 2px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.challenges-section,
.achievements-section,
.records-section,
.settings-section,
.leaderboard-section {
    margin-bottom: 25px;
}

.challenge-card {
    padding: 15px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 10px;
}

.challenge-card.weekly {
    border-left: 4px solid var(--rank-d);
}

.challenge-card.monthly {
    border-left: 4px solid var(--rank-s-gold);
}

.challenge-type {
    font-size: 0.65rem;
    color: var(--text-secondary);
    letter-spacing: 2px;
    margin-bottom: 5px;
}

.challenge-desc {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.challenge-progress {
    display: flex;
    align-items: center;
    gap: 10px;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: rgba(30, 30, 50, 0.8);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--rank-d), var(--rank-c));
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.challenge-reward {
    font-size: 0.75rem;
    color: var(--rank-s-gold);
    margin-top: 8px;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.achievement-card {
    padding: 12px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

.achievement-card.locked {
    opacity: 0.4;
    filter: grayscale(1);
}

.achievement-card.unlocked {
    border-color: var(--rank-s-gold);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.2);
}

.ach-icon {
    font-size: 2rem;
    display: block;
}

.ach-name {
    font-size: 0.75rem;
    font-weight: 700;
    display: block;
    margin: 5px 0;
}

.ach-desc {
    font-size: 0.6rem;
    color: var(--text-secondary);
    display: block;
}

.ach-xp {
    font-size: 0.65rem;
    color: var(--rank-s-gold);
    display: block;
    margin-top: 5px;
}

.records-list,
.leaderboard-list {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.record-item,
.leaderboard-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
}

.record-item:last-child,
.leaderboard-item:last-child {
    border-bottom: none;
}

.record-value {
    color: var(--rank-d);
    font-weight: 700;
}

.leaderboard-item.is-you {
    background: rgba(0, 212, 255, 0.1);
}

.lb-position {
    font-weight: 700;
    min-width: 40px;
}

.lb-name {
    flex: 1;
}

.lb-level,
.lb-rank {
    font-weight: 700;
    margin-left: 10px;
}

.settings-section {
    padding: 15px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.setting-item {
    margin-bottom: 15px;
}

.setting-item label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.avatar-picker {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.avatar-option {
    font-size: 1.5rem;
    padding: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.avatar-option:hover,
.avatar-option.selected {
    border-color: var(--rank-d);
    background: rgba(0, 212, 255, 0.1);
}

.setting-item select {
    width: 100%;
    padding: 10px;
    background: rgba(30, 30, 50, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: 'Roboto Mono', monospace;
}

.save-settings-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--rank-d), var(--rank-c));
    border: none;
    border-radius: 6px;
    color: var(--bg-dark);
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.save-settings-btn:hover {
    box-shadow: 0 0 20px var(--rank-d-glow);
}

.logout-link {
    display: block;
    text-align: center;
    padding: 15px;
    color: var(--danger);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 2px;
}

/* ============================================
   BOUTON INFO EXERCICE
   ============================================ */

.quest-info-btn {
    background: transparent;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 2px 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.quest-info-btn:hover {
    opacity: 1;
    transform: scale(1.2);
    background: rgba(255, 255, 255, 0.1);
}

/* ============================================
   MODAL EXERCICE
   ============================================ */

.exercise-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.exercise-modal.show {
    display: flex;
}

.exercise-modal-content {
    background: linear-gradient(135deg, rgba(20, 20, 40, 0.98), rgba(10, 10, 30, 0.98));
    border: 2px solid var(--rank-d);
    border-radius: 15px;
    padding: 30px;
    max-width: 400px;
    width: 90%;
    position: relative;
    box-shadow:
        0 0 30px var(--rank-d-glow),
        inset 0 0 30px rgba(0, 212, 255, 0.1);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: transparent;
    border: 1px solid var(--danger);
    color: var(--danger);
    font-size: 1.2rem;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--danger);
    color: white;
    box-shadow: 0 0 15px var(--danger);
}

.modal-title {
    text-align: center;
    font-size: 1.5rem;
    letter-spacing: 3px;
    margin-bottom: 25px;
    color: var(--rank-d);
    text-shadow: 0 0 20px var(--rank-d-glow);
}

.modal-section {
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    border-left: 3px solid var(--rank-d);
}

.modal-label {
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

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

.format-highlight {
    color: #66d9ff;
    font-style: italic;
    font-weight: 600;
}

/* ============================================
   RESPONSIVE MOBILE
   ============================================ */

@media screen and (max-width: 600px) {
    .container {
        padding: 10px;
        max-width: 100%;
    }

    .system-title {
        font-size: 1.3rem;
        letter-spacing: 4px;
    }

    .subtitle {
        font-size: 0.65rem;
        letter-spacing: 2px;
    }

    .player-card {
        padding: 15px;
    }

    .player-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .player-info {
        align-items: center;
    }

    .player-name {
        font-size: 1.3rem;
    }

    .player-level {
        font-size: 0.75rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .stat-box {
        padding: 10px 5px;
    }

    .stat-value {
        font-size: 1.3rem;
    }

    .stat-label {
        font-size: 0.6rem;
    }

    .section-header {
        font-size: 0.85rem;
        letter-spacing: 2px;
    }

    .quest-card {
        padding: 12px;
    }

    .quest-header {
        flex-wrap: wrap;
        gap: 5px;
    }

    .quest-rank-badge {
        font-size: 0.65rem;
        padding: 3px 8px;
    }

    .quest-info-btn {
        font-size: 1.2rem;
        padding: 5px 10px;
    }

    .quest-xp {
        font-size: 0.7rem;
    }

    .quest-exercise {
        font-size: 1rem;
    }

    .quest-quantity {
        font-size: 0.85rem;
    }

    .quest-format-hint {
        font-size: 0.7rem;
    }

    .quest-button {
        padding: 10px 15px;
        font-size: 0.75rem;
    }

    /* Modal mobile */
    .exercise-modal-content {
        padding: 20px;
        max-width: 95%;
        max-height: 90vh;
        overflow-y: auto;
    }

    .modal-title {
        font-size: 1.2rem;
        letter-spacing: 2px;
        margin-bottom: 15px;
    }

    .modal-section {
        padding: 12px;
        margin-bottom: 12px;
    }

    .modal-label {
        font-size: 0.65rem;
    }

    .modal-value {
        font-size: 0.9rem;
    }

    .modal-close {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }

    /* Nav mobile */
    .nav-link {
        padding: 8px 12px;
        font-size: 0.7rem;
    }

    /* Volume section */
    .volume-section {
        padding: 10px;
    }

    .xp-section {
        padding: 10px;
    }
}

/* Très petits écrans */
@media screen and (max-width: 360px) {
    .system-title {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 5px;
    }

    .stat-value {
        font-size: 1.1rem;
    }

    .player-name {
        font-size: 1.1rem;
    }

    .quest-exercise {
        font-size: 0.9rem;
    }
}

/* ============================================
   BOUTON INSTALLATION PWA
   ============================================ */

.pwa-install-btn {
    display: none;
    width: calc(100% - 40px);
    max-width: 460px;
    margin: 10px auto;
    padding: 15px 25px;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink));
    border: none;
    border-radius: 10px;
    color: var(--bg-dark);
    font-family: 'Roboto Mono', monospace;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow:
        0 0 20px var(--neon-cyan),
        0 0 40px rgba(0, 255, 255, 0.3);
    animation: pulse-glow 2s infinite;
}

.pwa-install-btn:hover {
    transform: translateY(-3px);
    box-shadow:
        0 0 30px var(--neon-cyan),
        0 0 60px var(--neon-pink),
        0 0 90px rgba(0, 255, 255, 0.4);
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow:
            0 0 20px var(--neon-cyan),
            0 0 40px rgba(0, 255, 255, 0.3);
    }

    50% {
        box-shadow:
            0 0 30px var(--neon-pink),
            0 0 50px rgba(255, 0, 255, 0.4);
    }
}

/* ============================================
   NOTIFICATION PERMISSION POPUP
   ============================================ */

.notification-prompt {
    text-align: center;
}

.notification-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

.notif-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-family: 'Roboto Mono', monospace;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.notif-accept {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-green));
    color: var(--bg-dark);
    box-shadow: 0 0 20px var(--neon-cyan);
}

.notif-accept:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px var(--neon-cyan), 0 0 50px var(--neon-green);
}

.notif-decline {
    background: rgba(100, 100, 100, 0.3);
    color: var(--text-secondary);
    border: 1px solid rgba(100, 100, 100, 0.5);
}

.notif-decline:hover {
    background: rgba(255, 0, 85, 0.2);
    border-color: var(--neon-red);
    color: var(--neon-red);
}

/* ============================================
   REST TIMER
   ============================================ */

.rest-timer-section {
    border-top: 1px solid rgba(0, 255, 255, 0.2);
    margin-top: 1rem;
    padding-top: 1rem;
}

.rest-timer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.rest-timer-buttons {
    display: flex;
    gap: 0.5rem;
}

.rest-timer-btn {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 100, 200, 0.3));
    border: 2px solid var(--neon-blue);
    color: var(--neon-blue);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-shadow: 0 0 5px var(--neon-blue);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.rest-timer-btn:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.4), rgba(0, 100, 200, 0.5));
    box-shadow: 0 0 20px var(--neon-blue);
    transform: translateY(-2px);
}

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

.rest-timer-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    padding: 1rem;
}

.rest-timer-display.hidden {
    display: none;
}

.timer-countdown {
    font-family: 'Orbitron', monospace;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--neon-blue);
    text-shadow: 0 0 10px currentColor, 0 0 20px currentColor, 0 0 40px currentColor;
    animation: none;
}

.timer-label {
    font-family: 'Orbitron', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    letter-spacing: 3px;
    margin-top: 0.3rem;
}

.timer-stop-btn {
    position: absolute;
    top: 0;
    right: 0;
    background: rgba(255, 0, 85, 0.2);
    border: 1px solid var(--neon-red);
    color: var(--neon-red);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.timer-stop-btn:hover {
    background: var(--neon-red);
    color: white;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* ============================================
   EXERCISE ANIMATIONS
   ============================================ */

.exercise-animation-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    margin-bottom: 1rem;
    background: rgba(0, 20, 40, 0.5);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 12px;
    box-shadow:
        inset 0 0 30px rgba(0, 0, 0, 0.3),
        0 0 15px rgba(0, 255, 255, 0.1);
}

.exercise-animation {
    width: 100%;
    max-width: 280px;
    height: auto;
    filter: drop-shadow(0 0 5px rgba(0, 255, 255, 0.5));
}

.exercise-animation line,
.exercise-animation circle {
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Animation glow effect on hover */
.exercise-animation-container:hover .exercise-animation {
    filter: drop-shadow(0 0 10px rgba(0, 255, 255, 0.8));
}

/* Image style for exercise demos */
.exercise-demo-image {
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: 10px;
    filter: drop-shadow(0 0 15px rgba(0, 255, 255, 0.4));
    transition: transform 0.3s ease, filter 0.3s ease;
}

.exercise-animation-container:hover .exercise-demo-image {
    transform: scale(1.02);
    filter: drop-shadow(0 0 20px rgba(0, 255, 255, 0.7));
}

/* Slideshow Animation Styles */
.exercise-animation-container {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: #000;
}

.exercise-demo-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    z-index: 1;
}

.exercise-demo-image.active {
    opacity: 1;
    z-index: 2;
}