:root {
    --bg-gradient: linear-gradient(135deg, #0c0c0c 0%, #1a0033 50%, #330066 100%);
    --neon-blue: #00f5ff;
    --neon-pink: #ff00ff;
    --neon-purple: #8b00ff;
}

body {
    background: var(--bg-gradient);
    background-attachment: fixed;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
}

.quiz-card {
    width: 100%;
    max-width: 700px;
    background: rgba(15, 15, 30, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    padding: 3rem;
    border: 2px solid transparent;
    background-clip: padding-box;
    box-shadow: 0 25px 50px rgba(0, 245, 255, 0.1);
}

.text-gradient {
    background: linear-gradient(45deg, var(--neon-blue), var(--neon-pink), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.question-title {
    color: var(--neon-blue) !important;
    text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
}

.reponse-btn {
    background: linear-gradient(145deg, rgba(255,255,255,0.1), rgba(0,0,0,0.3)) !important;
    border: 2px solid var(--neon-purple) !important;
    color: white !important;
    margin-bottom: 1rem !important;
    padding: 1.2rem !important;
    border-radius: 20px !important;
    transition: all 0.3s ease !important;
    backdrop-filter: blur(10px);
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.reponse-btn:hover {
    transform: translateY(-5px) scale(1.05) !important;
    box-shadow: 0 15px 30px rgba(139, 0, 255, 0.4) !important;
    border-color: var(--neon-pink) !important;
}

.reponse-btn.correcte {
    background: linear-gradient(145deg, #00ff88, #00cc6a) !important;
    border-color: #00ff88 !important;
    animation: pulse-green 0.6s ease-in-out;
}

.reponse-btn.incorrecte {
    background: linear-gradient(145deg, #ff4757, #ff3838) !important;
    border-color: #ff3838 !important;
    animation: shake 0.5s ease-in-out;
}

.btn-play {
    background: linear-gradient(45deg, #ffd700, #ffed4a) !important;
    border: none !important;
    color: #1a0033 !important;
    font-weight: bold !important;
    padding: 1rem 3rem !important;
    border-radius: 50px !important;
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.4);
}

@keyframes pulse-green {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.manga-hero, .manga-trophy {
    animation: float 3s ease-in-out infinite;
}

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

.reponse-btn.selectionnee {
    box-shadow: 0 0 25px rgba(0, 245, 255, 0.8);
    transform: scale(1.03);
}