:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #111827;
    --accent-red: #e50914;
    --accent-hover: #f40612;
    --text-primary: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --star-gold: #fbbf24;
    --success-green: #22c55e;
    --error-red: #ef4444;
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header & Nav */
.app-header {
    background-color: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.logo-icon {
    font-size: 2.2rem;
}

.brand-logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.5px;
}

.tagline {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-checking .status-dot { background-color: var(--star-gold); }
.status-online .status-dot { background-color: var(--success-green); box-shadow: 0 0 8px var(--success-green); }
.status-offline .status-dot { background-color: var(--error-red); }

/* Navegación SPA */
.main-nav {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.nav-links {
    display: flex;
    overflow-x: auto;
    gap: 0.5rem;
    padding: 0.5rem 0;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    color: #fff;
    background-color: var(--bg-secondary);
}

.nav-btn.active {
    color: #fff;
    background-color: var(--accent-red);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 1rem;
}

.app-view {
    display: block;
}

.app-view.hidden {
    display: none !important;
}
.hidden {
    display: none !important;
}
/* Secciones de Formulario */
.form-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    padding: 0 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.title-num {
    background-color: var(--accent-red);
    color: #fff;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.section-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0.5rem 0 1rem 0;
}

/* Grids de Selección */
.platforms-grid, .genres-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.75rem;
}

.checkbox-card {
    position: relative;
}

.checkbox-card input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-card label {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0.6rem 0.5rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
    min-height: 48px;
}

.checkbox-card input:checked + label {
    background-color: rgba(229, 9, 20, 0.15);
    border-color: var(--accent-red);
    color: #fff;
    font-weight: 600;
}

.checkbox-card input:focus-visible + label {
    outline: 2px solid var(--accent-red);
}

.age-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.radio-card input {
    position: absolute;
    opacity: 0;
}

.radio-card label {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.radio-card input:checked + label {
    background-color: var(--accent-red);
    border-color: var(--accent-red);
    color: #fff;
    font-weight: 700;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-cta {
    background-color: var(--accent-red);
    color: #fff;
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    border-radius: var(--radius-md);
}

.btn-cta:hover { background-color: var(--accent-hover); }

.btn-primary { background-color: #2563eb; color: #fff; }
.btn-primary:hover { background-color: #1d4ed8; }

.btn-secondary { background-color: var(--bg-secondary); color: #fff; border: 1px solid var(--border-color); }
.btn-secondary:hover { background-color: var(--border-color); }

.btn-ghost { background: none; color: var(--text-muted); }
.btn-ghost:hover { color: #fff; }

.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; }

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Estado de Carga y Errores */
.loading-state {
    text-align: center;
    padding: 3rem 1rem;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin: 2rem 0;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-box {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error-red);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    color: #fca5a5;
    margin: 1.5rem 0;
}

.error-box h3 { margin-bottom: 0.5rem; color: var(--error-red); }

/* Tarjetas de Películas */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 2rem 0 1rem 0;
}

.badge {
    background-color: var(--border-color);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.movie-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow);
    position: relative;
}

.movie-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.movie-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
}

.movie-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.75rem;
}

.age-badge {
    border: 1px solid var(--text-muted);
    padding: 0.05rem 0.3rem;
    border-radius: 3px;
    font-size: 0.7rem;
}

.movie-genres {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-bottom: 0.75rem;
}

.genre-tag {
    background-color: var(--bg-secondary);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    color: var(--text-muted);
}

.movie-platforms {
    margin: 0.75rem 0;
    padding: 0.5rem;
    background-color: rgba(255,255,255,0.03);
    border-radius: var(--radius-sm);
}

.platform-tag {
    display: inline-block;
    background-color: var(--accent-red);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-right: 0.3rem;
    margin-bottom: 0.2rem;
}

.movie-desc {
    font-size: 0.85rem;
    color: #cbd5e1;
    margin-bottom: 0.75rem;
}

.movie-why {
    font-size: 0.8rem;
    font-style: italic;
    color: var(--text-muted);
    background-color: var(--bg-secondary);
    padding: 0.5rem;
    border-left: 3px solid var(--accent-red);
    margin-bottom: 1rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.movie-ratings {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.rating-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.4rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
}

.rating-link:hover {
    border-color: var(--star-gold);
}

.card-actions {
    display: flex;
    gap: 0.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
}

/* Buscador Específico */
.search-box-form {
    margin: 1.5rem 0;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group input {
    flex: 1;
    padding: 0.8rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 1rem;
}

.single-movie-detail {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-top: 1.5rem;
    border: 1px solid var(--border-color);
}

/* Lista Watched */
.watched-items-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.watched-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

/* PWA Banner */
.pwa-banner {
    background-color: var(--bg-secondary);
    border-bottom: 2px solid var(--accent-red);
    padding: 0.75rem 1rem;
}

.pwa-banner.hidden { display: none; }

.pwa-banner-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.pwa-banner-actions {
    display: flex;
    gap: 0.5rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-icon { font-size: 3rem; display: block; margin-bottom: 0.5rem; }

.footer-content {
    text-align: center;
    padding: 2rem 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

.disclaimer { margin-top: 0.5rem; font-size: 0.75rem; }

/* Responsive Adjustments */
@media (min-width: 768px) {
    .pwa-banner {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .pwa-banner-content { margin-bottom: 0; }
}