/* =================================================================
   1. VARIABLES DE COLOR Y CONFIGURACIÓN GLOBAL
   ================================================================= */

:root {
    --color-fondo: #0a0a0a;
    --color-tarjeta: #1a1a1a;
    --color-texto-principal: #f0f0f0;
    --color-texto-secundario: #a0a0a0;
    --color-acento: #00aaff;
    --color-borde: #333333;
}

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

body {
    background-color: var(--color-fondo);
    color: var(--color-texto-principal);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
}

/* =================================================================
   2. ENCABEZADO Y TÍTULOS
   ================================================================= */

header {
    text-align: center;
    padding: 3rem 1rem;
}

h1 {
    font-size: 3rem;
    color: var(--color-texto-principal);
    font-weight: 700;
}

.category-section {
    padding: 1rem;
    margin-bottom: 3rem;
    text-align: center;
}

.category-section h2 {
    font-size: 2.2rem;
    display: inline-block;
    padding-bottom: 0.5rem;
    margin-bottom: 2.5rem;
    border-bottom: 3px solid var(--color-acento);
}

/* =================================================================
   3. CONTENEDOR DE PRODUCTOS (GRILLA MEJORADA)
   ================================================================= */

.product-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    padding: 0 1rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* =================================================================
   4. TARJETA DE PRODUCTO (MEJORADA PARA MÚLTIPLES IMÁGENES)
   ================================================================= */

.product-card {
    background-color: var(--color-tarjeta);
    border: 1px solid var(--color-borde);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 170, 255, 0.2);
    border-color: var(--color-acento);
}

/* Contenedor para las imágenes - MODIFICADO */
.images-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 columnas de ancho igual */
    gap: 8px;
    margin-bottom: 1.5rem;
}

/* Caso especial: cuando hay solo una imagen */
.images-container.single-image {
    grid-template-columns: 1fr;
}

.images-container.single-image img {
    height: 220px;
}

/* Caso especial: cuando hay 2 imágenes */
.images-container.two-images {
    grid-template-columns: repeat(2, 1fr);
}

/* Caso especial: cuando hay 4 imágenes */
.images-container.four-columns {
    grid-template-columns: repeat(4, 1fr);
}

/* Wrapper para imágenes clickeables */
.image-wrapper {
    display: block;
    cursor: zoom-in;
    transition: transform 0.3s;
    border-radius: 6px;
    overflow: hidden;
    width: 100%;
}

.image-wrapper:hover {
    transform: scale(1.02);
}

/* Estilo base para todas las imágenes */
.product-card img {
    width: 100%;
    height: 120px; /* Altura fija para uniformidad */
    object-fit: cover;
    display: block;
    border-radius: 6px;
}

/* Imágenes en contenedores single-image */
.images-container.single-image img {
    height: 220px;
}

.product-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--color-texto-principal);
}

.product-card .price {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--color-acento);
    margin-bottom: 1rem;
}

.product-card p {
    font-size: 0.95rem;
    color: var(--color-texto-secundario);
}

/* =================================================================
   5. MODAL PARA IMÁGENES EXPANDIDAS (MEJORADO CON NAVEGACIÓN)
   ================================================================= */

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    overflow: auto;
    animation: fadeIn 0.3s;
}

.modal-content {
    display: block;
    margin: 60px auto;
    max-width: 90%;
    max-height: calc(100vh - 120px);
    border: 3px solid var(--color-tarjeta);
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 170, 255, 0.3);
    animation: zoomIn 0.3s;
    position: relative;
}

.close-btn {
    position: absolute;
    top: 25px;
    right: 35px;
    color: var(--color-texto-principal);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    z-index: 1002;
    background-color: rgba(0, 0, 0, 0.5);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close-btn:hover {
    color: var(--color-acento);
    background-color: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

/* Flechas de navegación SOBRE LA IMAGEN */
.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-texto-principal);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1002;
    background-color: rgba(0, 0, 0, 0.5);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    user-select: none;
    opacity: 0.8;
}

.nav-btn:hover {
    color: var(--color-acento);
    background-color: rgba(0, 0, 0, 0.8);
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}

.prev-btn {
    left: 25px;
}

.next-btn {
    right: 25px;
}

/* Contador de imágenes */
.image-counter {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-texto-principal);
    font-size: 18px;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 8px 20px;
    border-radius: 20px;
    z-index: 1002;
    font-weight: 500;
    backdrop-filter: blur(5px);
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes zoomIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* =================================================================
   6. DISEÑO ADAPTABLE (RESPONSIVE)
   ================================================================= */

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .category-section h2 {
        font-size: 1.8rem;
    }
    
    .product-container {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }

    /* Ajuste para imágenes en tablet */
    .images-container {
        grid-template-columns: repeat(2, 1fr); /* 2 columnas en tablet */
    }

    .images-container.four-columns {
        grid-template-columns: repeat(2, 1fr); /* 2 columnas también para 4 imágenes */
    }

    .images-container.single-image img {
        height: 200px;
    }

    .modal-content {
        max-width: 95%;
        margin: 50px auto;
    }

    .close-btn {
        top: 15px;
        right: 25px;
        font-size: 35px;
        width: 45px;
        height: 45px;
    }

    .nav-btn {
        font-size: 35px;
        width: 50px;
        height: 50px;
    }

    .prev-btn {
        left: 15px;
    }

    .next-btn {
        right: 15px;
    }
    
    .image-counter {
        font-size: 16px;
        padding: 6px 16px;
        bottom: 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0.5rem;
    }

    h1 {
        font-size: 2rem;
    }
    
    .product-container {
        grid-template-columns: 1fr;
    }
    
    /* Una sola columna para imágenes en móvil */
    .images-container {
        grid-template-columns: 1fr;
    }

    .images-container.four-columns {
        grid-template-columns: 1fr;
    }

    .images-container.single-image img {
        height: 180px;
    }

    .modal-content {
        max-width: 100%;
        border-radius: 0;
        border: none;
        margin: 0;
        height: 100vh;
        max-height: 100vh;
        object-fit: contain;
    }

    .nav-btn {
        font-size: 30px;
        width: 45px;
        height: 45px;
    }
    
    .close-btn {
        top: 10px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 30px;
    }
    
    .image-counter {
        bottom: 15px;
        font-size: 14px;
        padding: 5px 14px;
    }
}

/* Efecto de desvanecimiento para las flechas en dispositivos táctiles */
@media (hover: none) {
    .nav-btn {
        opacity: 0.6;
    }
    
    .nav-btn:active {
        opacity: 1;
        background-color: rgba(0, 0, 0, 0.8);
    }
}