/* ============================================
   Variables CSS
   ============================================ */
:root {
    /* Colores principales */
    --primary: #FF6B35;
    --primary-dark: #E55A2B;
    --secondary: #004E89;
    --accent: #1AE5BE;
    
    /* Neutrales */
    --dark: #1A1A1D;
    --gray: #6E6E73;
    --light-gray: #F5F5F7;
    --white: #FFFFFF;
    
    /* Estados */
    --success: #34C759;
    --warning: #FF9500;
    --error: #FF3B30;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Tipografía */
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Bordes */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

/* ============================================
   Reset y Base
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    color: var(--dark);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hidden {
    display: none !important;
}

/* ============================================
   Header
   ============================================ */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-md);
}

.logo h1 {
    font-size: var(--font-size-xl);
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.logo .tagline {
    font-size: var(--font-size-sm);
    color: var(--gray);
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--dark);
    transition: color 0.3s;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.user-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-photo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--light-gray);
}

.user-name {
    font-weight: 500;
    color: var(--dark);
    font-size: var(--font-size-sm);
}

/* ============================================
   Botones
   ============================================ */
.btn-primary,
.btn-secondary,
.btn-hero {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--dark);
}

.btn-secondary:hover {
    background: #E5E5EA;
}

.btn-hero {
    background: var(--primary);
    color: var(--white);
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

.btn-hero:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    color: var(--white);
    padding: 6rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" xmlns="http://www.w3.org/2000/svg"><circle cx="30" cy="30" r="1.5" fill="white" opacity="0.1"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Secciones
   ============================================ */
.categories-section,
.featured-section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--dark);
}

/* ============================================
   Grid de Categorías
   ============================================ */
.categories-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.category-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
    height: 200px;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: var(--spacing-md);
    color: var(--white);
}

.category-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

/* ============================================
   Grid de Productos
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-image-container {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--light-gray);
    position: relative;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.product-card:hover .product-image {
    transform: scale(1.05);
}

.badge-new {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.product-info {
    padding: var(--spacing-md);
}

.product-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.product-category {
    font-size: var(--font-size-sm);
    color: var(--gray);
    margin-bottom: var(--spacing-sm);
}

.product-colors {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.color-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--light-gray);
    cursor: pointer;
    transition: transform 0.2s;
}

.color-dot:hover {
    transform: scale(1.2);
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary);
}

.btn-quick-view {
    background: var(--secondary);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    transition: background 0.3s;
}

.btn-quick-view:hover {
    background: #003666;
}

/* ============================================
   Skeleton Loading
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--light-gray) 25%, #E5E5EA 50%, var(--light-gray) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.footer-section p {
    color: #B8B8BD;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: var(--spacing-md);
    text-align: center;
    color: #B8B8BD;
    font-size: var(--font-size-sm);
}

/* ============================================
   Responsive
   ============================================ */
@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .nav {
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
        padding-top: var(--spacing-sm);
        border-top: 1px solid var(--light-gray);
    }
    
    .hero {
        padding: 4rem 1rem;
    }
    
    .user-name {
        display: none;
    }
}