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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    min-height: 100vh;
}

header {
    background: rgba(0, 0, 0, 0.8);
    padding: 2rem;
    text-align: center;
    border-bottom: 3px solid #00d4ff;
}

header h1 {
    font-size: 2rem;
    color: #00d4ff;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.controls {
    padding: 2rem;
    text-align: center;
}

#searchInput {
    padding: 12px 24px;
    font-size: 1rem;
    border: none;
    border-radius: 25px;
    width: 80%;
    max-width: 400px;
    background: white;
    color: #1a1a2e;
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.chapter-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.chapter-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.chapter-cover {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: linear-gradient(135deg, #00d4ff, #090979);
}

.chapter-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.chapter-info {
    padding: 1rem;
}

.chapter-number {
    font-size: 1.2rem;
    color: #00d4ff;
    font-weight: bold;
}

.chapter-title {
    font-size: 1rem;
    margin-top: 0.5rem;
    color: #ddd;
}

.chapter-info small {
    display: block;
    margin-top: 0.5rem;
    color: #888;
}

footer {
    text-align: center;
    padding: 2rem;
    background: rgba(0, 0, 0, 0.8);
    margin-top: 2rem;
}

.no-results {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: #888;
}

/* Vista lista */
.list-view {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
}

/* Controles */
.controls-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem 1rem 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.sort-select, .view-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    color: white;
    cursor: pointer;
}

.view-btn.active {
    background: #00d4ff;
    color: black;
}

.view-buttons {
    display: flex;
    gap: 8px;
}

@media (max-width: 768px) {
    .chapters-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .chapter-cover {
        height: 200px;
    }
    
    .controls-row {
        padding: 0 1rem 1rem 1rem;
    }
}