/* 1. Variables de Modo Oscuro */
:root {
    --bg-color: #0f172a; /* Fondo principal oscuro (tipo azul marino noche) */
    --card-bg: #1e293b; /* Fondo de las tarjetas y barra superior */
    --text-main: #f8fafc; /* Texto principal en blanco/gris claro */
    --text-muted: #94a3b8; /* Texto secundario gris */
    --accent-color: #38bdf8; /* Azul claro llamativo para botones */
    --border-color: #334155; /* Líneas separadoras oscuras */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
}

/* 2. Barra de Navegación Oscura */
.navbar {
    background-color: var(--bg-color);
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 1px;
}

.logo-container {
    display: flex;
    align-items: center;
    height: 100%;
    text-decoration: none;
    color: var(--text-main);
}

.logo-container:hover,
.logo-container:visited,
.logo-container:active,
.logo-container:focus {
    text-decoration: none;
    color: var(--text-main);
}

.brand-logo {
    height: 45px;
    width: auto;
    object-fit: contain;
}

.search-container {
    width: 40%;
    display: flex;
    align-items: center;
    gap: 10px;
}
/* Barra de búsqueda adaptada al modo oscuro */
.search-bar {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--card-bg);
    color: var(--text-main);
    font-size: 14px;
    outline: none;
}

/* Decoración de imagen en el buscador */
.search-decoration {
    height: 70px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

    .search-bar::placeholder {
        color: var(--text-muted);
    }

.header-actions {
    display: flex;
    align-items: center;
    gap: 25px;
    font-size: 14px;
}

.location-selector {
    color: var(--text-muted);
}

    .location-selector strong {
        color: var(--text-main);
    }

/* 3. Estructura Principal */
.container {
    display: flex;
    max-width: 1300px;
    margin: 30px auto;
    gap: 40px;
    padding: 0 20px;
}

.sidebar {
    width: 220px;
    flex-shrink: 0;
}

    .sidebar h3 {
        font-size: 16px;
        margin-bottom: 15px;
        font-weight: 700;
        text-transform: uppercase;
        color: var(--text-main);
    }

.mt-20 {
    margin-top: 30px;
}

.filter-list {
    list-style: none;
}

    .filter-list li {
        margin-bottom: 12px;
    }

    .filter-list a {
        text-decoration: none;
        color: var(--text-muted);
        font-size: 14px;
    }

        .filter-list a:hover, .filter-list a.active {
            color: var(--text-main);
            font-weight: 600;
        }

.size-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}
/* Botones de tallas oscuros */
.size-btn {
    background: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
}

    .size-btn:hover {
        border-color: var(--accent-color);
    }

/* 4. Tarjetas de Productos */
.products-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 25px;
}

.product-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

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

/* El fondo de la imagen se queda blanco para que las fotos de productos sigan luciendo bien */
.image-container {
    padding: 20px;
    background-color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-card img {
    width: 100%;
    height: 180px;
    object-fit: contain;
}

.product-info {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.badge {
    display: inline-block;
    align-self: flex-start;
    background: rgba(56, 189, 248, 0.15);
    color: var(--accent-color);
    font-size: 10px;
    font-weight: 700;
    padding: 6px 8px;
    border-radius: 999px;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.brand {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.title {
    font-size: 15px;
    margin: 8px 0 15px 0;
    font-weight: 500;
    color: var(--text-main);
}

.price-row {
    margin-top: auto;
    margin-bottom: 15px;
}

.lowest-ask .label {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
}

.lowest-ask .price {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
}

/* Verde más brillante para que se lea bien en fondo oscuro */
.stock-info {
    font-size: 12px;
    color: #34d399;
    margin-bottom: 15px;
}

.btn-buy {
    width: 100%;
    background-color: var(--accent-color);
    color: #0f172a;
    border: none;
    padding: 12px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 700;
}

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

/* 5. Menú de Categorías Principal */
.category-menu {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
    position: sticky;
    top: 71px;
    z-index: 99;
}

.container-nav {
    display: flex;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px;
    gap: 30px;
}

.category-link {
    display: inline-block;
    padding: 15px 0;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    white-space: nowrap;
}

    .category-link:hover {
        color: var(--text-main);
        border-bottom-color: var(--accent-color);
    }

    .category-link.active {
        color: var(--accent-color);
        border-bottom-color: var(--accent-color);
    }

/* 6. Header de Sección */
.section-header {
    grid-column: 1 / -1;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-main);
}

.section-header p {
    color: var(--text-muted);
    font-size: 14px;
}

/* 7. Responsivo */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
        gap: 20px;
    }

    .sidebar {
        width: 100%;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .container-nav {
        gap: 15px;
        overflow-x: auto;
    }

    .category-link {
        font-size: 13px;
        padding: 12px 0;
    }
}