/* =========================================
 *  1. BASE & BACKGROUND (Universel)
 *  ========================================= */
html, body {
    margin: 0;
    max-width: 100%;
    overflow-x: hidden;
}
body {
    background: #0b0e14;
    color: #e0e0e0;
    font-family: 'Segoe UI', Roboto, sans-serif;
    overflow-x: hidden;
}

.stars-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(ellipse at bottom, #1B2735 0%, #090A0F 100%);
    z-index: -1;
}

.stars-bg::after {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 2px; height: 2px;
    background: transparent;
    box-shadow: 452px 148px #FFF, 120px 785px #FFF, 1245px 321px #FFF, 854px 125px #FFF, 321px 654px #FFF, 1542px 854px #FFF, 154px 952px #FFF, 754px 452px #FFF, 1100px 120px #FFF, 250px 350px #FFF;
    border-radius: 50%;
    opacity: 0.4;
}

.stars-bg::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 3px; height: 3px;
    background: transparent;
    box-shadow: 200px 150px #FFF, 1100px 800px #FFF, 600px 400px #FFF, 1400px 300px #FFF, 400px 900px #FFF, 1000px 100px #FFF;
    border-radius: 50%;
    opacity: 0.7;
    animation: twinkle 5s infinite alternate;
}

@keyframes twinkle {
    from { opacity: 0.5; }
    to { opacity: 0.8; }
}

/* =========================================
 *  2. CONTAINERS & HEADERS
 *  ========================================= */
.container, .container-book {
    max-width: 1100px;
    margin: 180px auto 80px;
    padding: 0 20px;
}

.intro-header {
    text-align: center;
    margin-bottom: 60px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.intro-header h1 {
    font-size: 2.2rem !important;
    text-transform: uppercase;
    letter-spacing: 6px;
    color: #fff;
    margin: 0 0 15px 0;
    text-shadow: 0 0 15px rgba(0, 212, 255, 0.6);
}

.intro-header .subtitle {
    font-size: 1.1rem;
    color: #00d4ff;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

/* =========================================
 *  3. GRILLE D'ACCUEIL (index.php)
 *  ========================================= */
.novels-grid { display: flex; flex-direction: column; gap: 40px; }

.book-card {
    display: flex; align-items: center; gap: 40px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px; padding: 30px;
    transition: transform 0.3s ease;
}

.book-card:hover { transform: translateY(-5px); border-color: rgba(0, 212, 255, 0.3); }

.book-cover img { width: 220px; border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }

.btn-more {
    display: inline-block; margin-top: 20px; color: #00d4ff;
    text-decoration: none; font-weight: bold; border: 1px solid #00d4ff;
    padding: 10px 20px; border-radius: 50px; transition: 0.3s;
}

.btn-more:hover { background: #00d4ff; color: #0b0e14; box-shadow: 0 0 15px rgba(0, 212, 255, 0.4); }

/* =========================================
 *  4. SECTIONS DÉTAILS (les-abysses-stellaires.php)
 *  ========================================= */
.book-hero { display: flex; gap: 60px; align-items: flex-start; margin-bottom: 80px; }
.book-cover-main { flex: 0 0 350px; }
.book-cover-main img { width: 100%; border-radius: 15px; box-shadow: 0 20px 40px rgba(0,0,0,0.6); }

.book-details h2 { font-size: 2.8rem; color: #fff; margin: 0 0 25px 0; }
.event-tag { color: #00d4ff; text-transform: uppercase; font-weight: bold; letter-spacing: 2px; display: block; margin-bottom: 10px; }

/* FIX STORY & MUSICAL SECTIONS */
.story-section, .musical-universe {
    display: flex; gap: 50px; align-items: center; margin-bottom: 80px; padding: 50px;
    background: rgba(255, 255, 255, 0.02); border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 30px; backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
}

.story-image { flex: 0 0 400px; }
.story-image img { width: 100%; filter: drop-shadow(0 10px 20px rgba(0,0,0,0.5)); }
.story-text h2, .musical-info h2 { color: #fff; font-size: 2rem; margin-top: 0; }
.story-text blockquote { font-style: italic; color: #00d4ff; margin: 20px 0; border-left: 3px solid #00d4ff; padding-left: 20px; }

/* FIX VIDÉO YOUTUBE */
.video-wrapper {
    flex: 1.5;
    position: relative;
    padding-bottom: 42%; /* Ratio pour garder la vidéo rectangulaire */
    height: 0;
    overflow: hidden;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

.musical-info { flex: 1; }
.btn-musical, .btn-buy-link {
    display: inline-block; padding: 15px 35px; background: rgba(0, 212, 255, 0.1);
    color: #00d4ff; text-decoration: none; border: 1px solid #00d4ff; border-radius: 50px;
    font-weight: bold; text-transform: uppercase; transition: 0.3s; margin-top: 20px;
}
.btn-musical:hover, .btn-buy-link:hover { background: #00d4ff; color: #0b0e14; box-shadow: 0 0 30px rgba(0, 212, 255, 0.5); }

/* Infos Techniques */
.info-tech { display: flex; gap: 50px; align-items: center; margin-bottom: 80px; }
.tech-list { flex: 1; }
.tech-image img { width: 100%; max-width: 450px; border-radius: 10px; }

/* =========================================
 *  5. RESPONSIVE (Mobile)
 *  ========================================= */
@media (max-width: 900px) {
    .container, .container-book { margin-top: 100px; padding: 0 15px; }
    .book-card, .book-hero, .story-section, .musical-universe, .info-tech {
        flex-direction: column; text-align: center; align-items: center; padding: 20px; gap: 20px;
    }
    .story-image, .book-cover-main, .tech-image { flex: none; width: 100%; max-width: 280px; }
    .video-wrapper { width: 100%; padding-bottom: 56.25%; }
    .intro-header { padding: 20px 15px; }
    .intro-header h1 { font-size: 1.5rem !important; letter-spacing: 3px; }
    .intro-header .subtitle { font-size: 0.95rem; }
    .book-details h2 { font-size: 1.8rem; }
    .story-text h2, .musical-info h2 { font-size: 1.5rem; }
    .book-cover img { width: 160px; }
}

@media (max-width: 480px) {
    .container, .container-book { margin-top: 85px; padding: 0 12px; }
    .intro-header h1 { font-size: 1.2rem !important; letter-spacing: 2px; }
    .intro-header { padding: 15px 10px; }
    .book-card { padding: 15px; gap: 15px; }
    .book-cover img { width: 130px; }
    .book-details h2 { font-size: 1.4rem; }
    .btn-more { padding: 8px 16px; font-size: 0.85rem; }
    .story-section, .musical-universe { padding: 15px; }
}