/**
 * public/css/main.css
 * Estilos puristas, minimalistas y soberanos.
 * Diseño Responsive Dual: 2/3 Top Rank vs 1/3 The Loosers.
 * 100% Nativo, Cero Frameworks Externos, Mobile-First.
 */

:root {
    --bg-primary: #0a0a0c;
    --bg-card: #141419;
    --text-primary: #f0f0f5;
    --text-muted: #8e8e99;
    --accent-gold: #f39c12;
    --accent-danger: #c0392b;
    --border-color: #262633;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-header {
    text-align: center;
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-card);
}

.app-header h1 {
    font-size: 1.25rem;
    letter-spacing: 2px;
    color: var(--accent-gold);
}

.subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.arena-container {
    display: grid;
    grid-template-columns: 1fr;
    flex: 1;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .arena-container {
        grid-template-columns: 2fr 1fr; /* Proporción exacta 2/3 Top Rank y 1/3 The Loosers */
    }
}

.arena-zone {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.top-rank {
    border-right: 1px solid var(--border-color);
}

.loosers-zone {
    background-color: rgba(192, 57, 43, 0.03);
}

.zone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.zone-header h2 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.zone-weight {
    font-size: 0.75rem;
    background: var(--border-color);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

.books-grid, .books-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.book-card, .looser-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 6px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.book-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}

.looser-item {
    opacity: 0.75;
    border-color: rgba(192, 57, 43, 0.3);
}

.book-info h3, .book-info h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.author {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: block;
    margin-top: 0.15rem;
}

.score-badge {
    display: inline-block;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--accent-gold);
}

.humiliation-badge {
    font-size: 0.7rem;
    background: rgba(192, 57, 43, 0.2);
    color: var(--accent-danger);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
}

.action-btn {
    background: var(--accent-gold);
    color: #000;
    border: none;
    padding: 0.5rem 0.85rem;
    font-family: var(--font-mono);
    font-weight: bold;
    font-size: 0.75rem;
    cursor: pointer;
    border-radius: 4px;
    text-transform: uppercase;
    transition: opacity 0.2s;
}

.action-btn:hover {
    opacity: 0.9;
}

.app-footer {
    text-align: center;
    padding: 1rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-card);
}