/* ========================================
   FERROTECH - Estilos Principales
   Paleta de colores industriales
   ======================================== */

/* Variables CSS */
:root {
    /* Colores principales */
    --color-primary: #FF6B00;        /* Naranja seguridad */
    --color-primary-dark: #E65C00;
    --color-primary-light: #FF8533;
    
    --color-dark: #1a1a1a;           /* Gris oscuro / Negro */
    --color-dark-gray: #2d2d2d;
    --color-medium-gray: #4a4a4a;
    --color-light-gray: #f5f5f5;
    
    --color-white: #ffffff;
    --color-black: #000000;
    
    /* Tipografía */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 50%;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

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

/* Contenedor */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   LOADING SCREEN
   ======================================== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-gray) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.loading-logo {
    margin-bottom: var(--spacing-lg);
    animation: pulse 1.5s ease-in-out infinite;
}

.logo-icon {
    width: 100px;
    height: 100px;
}

.loading-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.loading-offer {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 20px rgba(255, 107, 0, 0.5);
    animation: glow 1s ease-in-out infinite alternate;
}

.loading-subtitle {
    font-size: 1.2rem;
    color: var(--color-light-gray);
    margin-bottom: var(--spacing-lg);
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: var(--color-medium-gray);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-full);
    animation: loading 3s ease-in-out forwards;
}

@keyframes loading {
    0% { width: 0%; }
    100% { width: 100%; }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes glow {
    0% { text-shadow: 0 0 20px rgba(255, 107, 0, 0.5); }
    100% { text-shadow: 0 0 40px rgba(255, 107, 0, 0.8), 0 0 60px rgba(255, 107, 0, 0.4); }
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.header.scrolled {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-md);
    min-height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: opacity var(--transition-fast);
}

.nav-logo:hover {
    opacity: 0.9;
}

.logo-small {
    width: 45px;
    height: 45px;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
}

.logo-text .highlight {
    color: var(--color-primary);
}

/* Estilo especial para Login/Registro */
.nav-link-auth {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-link-auth:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.4);
}

.nav-link-auth::after {
    display: none;
}

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

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-white);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

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

.btn-search,
.btn-cart {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.btn-search:hover,
.btn-cart:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-search svg,
.btn-cart svg {
    width: 20px;
    height: 20px;
}

.btn-cart {
    position: relative;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-mobile-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
}

.btn-mobile-menu span {
    width: 25px;
    height: 3px;
    background: var(--color-white);
    border-radius: var(--radius-sm);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.btn-mobile-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.btn-mobile-menu.active span:nth-child(2) {
    opacity: 0;
}

.btn-mobile-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('https://images.unsplash.com/photo-1581147036324-c1794bc36a23?w=1920&h=1080&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: var(--spacing-xxl) 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(26, 26, 26, 0.9) 0%,
        rgba(45, 45, 45, 0.8) 50%,
        rgba(26, 26, 26, 0.9) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    animation: slideDown 0.8s ease-out;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    animation: slideUp 0.8s ease-out 0.2s both;
}

.hero-title .highlight {
    color: var(--color-primary);
    position: relative;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-light-gray);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    animation: slideUp 0.8s ease-out 0.4s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xxl);
    animation: slideUp 0.8s ease-out 0.6s both;
}

.hero-features {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    flex-wrap: wrap;
    animation: slideUp 0.8s ease-out 0.8s both;
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-white);
}

.feature svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.feature span {
    font-size: 0.9rem;
    font-weight: 600;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-light-gray);
    font-size: 0.85rem;
    z-index: 1;
    animation: fadeIn 1s ease-out 1.5s both;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    animation: scroll 1.5s ease-in-out infinite;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 0, 0.4);
}

.btn-primary svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.btn-primary:hover svg {
    transform: translateX(5px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-dark);
    transform: translateY(-2px);
}

/* ========================================
   CATEGORIES SECTION
   ======================================== */
.categories {
    padding: var(--spacing-xxl) 0;
    background: var(--color-light-gray);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.category-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.category-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.category-card:hover .category-image img {
    transform: scale(1.1);
}

.category-info {
    padding: var(--spacing-lg);
}

.category-info h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.category-info p {
    color: var(--color-medium-gray);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

.category-link {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: gap var(--transition-fast);
}

/* ========================================
   CATÁLOGO DE PRODUCTOS
   ======================================== */
.catalog {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.catalog-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-dark);
    background: var(--color-light-gray);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--color-medium-gray);
    color: var(--color-white);
}

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

.productos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.producto-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.producto-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.producto-image {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: var(--color-light-gray);
}

.producto-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.producto-card:hover .producto-image img {
    transform: scale(1.1);
}

.producto-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.producto-info {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.producto-categoria {
    font-size: 0.75rem;
    color: var(--color-medium-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
}

.producto-nombre {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.producto-descripcion {
    font-size: 0.9rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
    flex: 1;
}

.producto-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-top: auto;
}

.producto-precio {
    display: flex;
    flex-direction: column;
}

.precio-actual {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
}

.precio-anterior {
    font-size: 0.85rem;
    color: var(--color-medium-gray);
    text-decoration: line-through;
}

.btn-add-cart {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-dark);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-add-cart:hover {
    background: var(--color-primary);
    transform: scale(1.05);
}

.btn-add-cart svg {
    width: 18px;
    height: 18px;
}

.btn-add-cart.added {
    background: #25D366;
}

/* Animación de añadido */
@keyframes card-added {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.producto-card.added {
    animation: card-added 0.3s ease-in-out;
}

.category-link:hover {
    gap: var(--spacing-xs);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-dark);
    color: var(--color-light-gray);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-column p {
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-description {
    margin-bottom: var(--spacing-md);
    color: var(--color-medium-gray);
}

.footer-payment {
    margin-top: var(--spacing-md);
}

.payment-title {
    font-size: 0.85rem;
    color: var(--color-medium-gray);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.payment-icons {
    display: flex;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.contact-info svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-social {
    margin-top: var(--spacing-md);
}

.social-instagram {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.social-instagram:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(220, 39, 67, 0.4);
}

.social-instagram svg {
    width: 20px;
    height: 20px;
}

.footer-policies {
    border-top: 1px solid var(--color-dark-gray);
    border-bottom: 1px solid var(--color-dark-gray);
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-md);
}

.policies-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.policies-links a {
    font-size: 0.85rem;
    color: var(--color-medium-gray);
    transition: color var(--transition-fast);
}

.policies-links a:hover {
    color: var(--color-primary);
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    font-size: 0.95rem;
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-xs);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-dark-gray);
    border-radius: var(--radius-full);
    color: var(--color-white);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.social-links a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.social-links svg {
    width: 18px;
    height: 18px;
}

.footer-bottom {
    border-top: 1px solid var(--color-medium-gray);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.9rem;
}

/* ========================================
   ANIMACIONES
   ======================================== */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes scroll {
    0%, 100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 0.5;
        transform: translateX(-50%) translateY(10px);
    }
}

/* ========================================
   PANEL LATERAL DEL CARRITO (OFF-CANVAS)
   ======================================== */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: 11000;
    visibility: hidden;
}

.cart-sidebar.active {
    visibility: visible;
}

.cart-sidebar[aria-hidden="true"] {
    visibility: hidden;
}

.cart-sidebar[aria-hidden="false"] {
    visibility: visible;
}

/* Overlay */
.cart-sidebar-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.cart-sidebar.active .cart-sidebar-overlay {
    opacity: 1;
}

/* Panel */
.cart-sidebar-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 550px;
    height: 100%;
    background: var(--color-white);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

.cart-sidebar.active .cart-sidebar-panel {
    transform: translateX(0);
}

/* Header */
.cart-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-gray) 100%);
    color: var(--color-white);
}

.cart-sidebar-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
}

.cart-sidebar-title svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.cart-sidebar-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-white);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.cart-sidebar-close:hover {
    background: var(--color-primary);
    transform: rotate(90deg);
}

.cart-sidebar-close svg {
    width: 22px;
    height: 22px;
}

/* Contenido */
.cart-sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

/* Carrito vacío */
.cart-empty {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.cart-empty-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-lg);
    background: var(--color-light-gray);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-empty-icon svg {
    width: 50px;
    height: 50px;
    color: var(--color-medium-gray);
}

.cart-empty h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.cart-empty p {
    color: var(--color-medium-gray);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.btn-browse {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-browse:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
}

.btn-browse svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn-browse:hover svg {
    transform: translateX(5px);
}

/* Items del carrito */
.cart-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.cart-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-white);
    border: 1px solid var(--color-light-gray);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.cart-item:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.1);
}

.cart-item-image {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-light-gray);
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item-info {
    flex: 1;
    min-width: 0;
}

.cart-item-name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cart-item-category {
    font-size: 0.8rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-xs);
}

.cart-item-price {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.price-unit {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
}

.price-original {
    font-size: 0.85rem;
    color: var(--color-medium-gray);
    text-decoration: line-through;
}

.cart-item-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    align-items: flex-end;
}

/* Control de cantidad */
.quantity-control {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--color-light-gray);
    border-radius: var(--radius-sm);
    padding: 2px;
}

.qty-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid var(--color-light-gray);
    border-radius: var(--radius-sm);
    color: var(--color-dark);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.qty-input {
    width: 40px;
    height: 28px;
    text-align: center;
    border: none;
    background: transparent;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-dark);
    -moz-appearance: textfield;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Botón eliminar */
.remove-item {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-light-gray);
    border-radius: var(--radius-sm);
    color: var(--color-medium-gray);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.remove-item:hover {
    background: #fee2e2;
    border-color: #ef4444;
    color: #ef4444;
}

.remove-item svg {
    width: 16px;
    height: 16px;
}

/* Footer / Checkout */
.cart-sidebar-footer {
    padding: var(--spacing-lg);
    background: var(--color-light-gray);
    border-top: 1px solid var(--color-medium-gray);
}

/* Resumen de precios */
.cart-summary {
    margin-bottom: var(--spacing-md);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    font-size: 0.95rem;
    color: var(--color-medium-gray);
}

.summary-value {
    font-weight: 600;
    color: var(--color-dark);
}

.summary-row.shipping .summary-value {
    color: var(--color-dark);
}

.summary-row.discount {
    color: #27ae60;
}

.summary-row.discount .summary-value {
    color: #27ae60;
}

.summary-row.total {
    border-top: 2px solid var(--color-dark);
    padding-top: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
}

.summary-row.total .summary-value {
    font-size: 1.4rem;
    color: var(--color-primary);
}

/* Código de descuento */
.discount-code {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.discount-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-medium-gray);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast);
}

.discount-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.discount-apply {
    padding: var(--spacing-sm);
    background: var(--color-dark);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.discount-apply:hover {
    background: var(--color-primary);
}

.discount-apply svg {
    width: 20px;
    height: 20px;
}

/* Métodos de pago */
.payment-methods {
    margin-bottom: var(--spacing-md);
}

.payment-title {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.payment-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xs);
}

.payment-option {
    display: block;
    cursor: pointer;
}

.payment-option input {
    display: none;
}

.payment-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    background: var(--color-white);
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.payment-card:hover {
    border-color: var(--color-medium-gray);
}

.payment-option input:checked + .payment-card {
    border-color: var(--color-primary);
    background: rgba(255, 107, 0, 0.05);
}

.payment-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4px;
}

.payment-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-dark);
}

.payment-card span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-dark);
}

/* Estilos específicos para cada método */
.payment-card.yape .payment-icon {
    background: #742284;
    border-radius: var(--radius-sm);
}

.yape-text {
    color: var(--color-white);
    font-weight: 800;
    font-size: 0.85rem;
    font-style: italic;
}

.payment-card.plin .payment-icon {
    background: #00d4aa;
    border-radius: var(--radius-sm);
}

.plin-text {
    color: var(--color-white);
    font-weight: 800;
    font-size: 0.85rem;
}

.payment-card.paypal .payment-icon svg {
    color: #003087;
}

.payment-card.cash .payment-icon svg {
    color: #27ae60;
}

/* Botón de checkout */
.btn-checkout,
.btn-checkout-continue {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-sm);
}

.btn-checkout:hover,
.btn-checkout-continue:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 0, 0.4);
}

.btn-checkout svg,
.btn-checkout-continue svg {
    width: 22px;
    height: 22px;
}

.checkout-total {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
}

/* Mensaje de envío gratis */
.free-shipping-message {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: rgba(39, 174, 96, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: #27ae60;
    font-weight: 600;
}

.free-shipping-message svg {
    width: 18px;
    height: 18px;
}

/* Scrollbar */
.cart-sidebar-content::-webkit-scrollbar {
    width: 6px;
}

.cart-sidebar-content::-webkit-scrollbar-track {
    background: var(--color-light-gray);
}

.cart-sidebar-content::-webkit-scrollbar-thumb {
    background: var(--color-medium-gray);
    border-radius: var(--radius-full);
}

.cart-sidebar-content::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* ========================================
   MODAL DE AUTENTICACIÓN
   ======================================== */
.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.auth-modal.active {
    opacity: 1;
    visibility: visible;
}

.auth-modal[aria-hidden="true"] {
    opacity: 0;
    visibility: hidden;
}

.auth-modal[aria-hidden="false"] {
    opacity: 1;
    visibility: visible;
}

.auth-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.auth-modal-container {
    position: relative;
    background: var(--color-white);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    transform: translateY(-30px) scale(0.95);
    transition: transform var(--transition-normal);
}

.auth-modal.active .auth-modal-container {
    transform: translateY(0) scale(1);
}

.auth-modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-light-gray);
    border-radius: var(--radius-full);
    color: var(--color-dark);
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.auth-modal-close:hover {
    background: var(--color-dark);
    color: var(--color-white);
    transform: rotate(90deg);
}

.auth-modal-close svg {
    width: 20px;
    height: 20px;
}

.auth-modal-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.auth-modal-logo {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.auth-modal-logo .logo-small {
    width: 60px;
    height: 60px;
}

.auth-modal-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.auth-modal-subtitle {
    font-size: 0.95rem;
    color: var(--color-medium-gray);
}

/* Tabs */
.auth-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    background: var(--color-light-gray);
    padding: var(--spacing-xs);
    border-radius: var(--radius-lg);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-medium-gray);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.auth-tab:hover {
    color: var(--color-dark);
}

.auth-tab.active {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* Formularios */
.auth-form {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.form-label svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-dark);
    background: var(--color-white);
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.1);
}

.form-input::placeholder {
    color: var(--color-medium-gray);
}

.form-input.error {
    border-color: #e74c3c;
}

.form-error {
    display: block;
    font-size: 0.8rem;
    color: #e74c3c;
    margin-top: var(--spacing-xs);
    min-height: 1.2em;
}

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper .form-input {
    padding-right: 45px;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-medium-gray);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.password-toggle:hover {
    color: var(--color-primary);
}

.password-toggle svg {
    width: 20px;
    height: 20px;
}

/* Fortaleza de contraseña */
.password-strength {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.strength-bar {
    flex: 1;
    height: 4px;
    background: var(--color-light-gray);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-full);
    transition: width var(--transition-fast), background var(--transition-fast);
}

.strength-fill.weak {
    width: 25%;
    background: #e74c3c;
}

.strength-fill.fair {
    width: 50%;
    background: #f39c12;
}

.strength-fill.good {
    width: 75%;
    background: #3498db;
}

.strength-fill.strong {
    width: 100%;
    background: #27ae60;
}

.strength-text {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-medium-gray);
    white-space: nowrap;
}

/* Opciones del formulario */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    color: var(--color-medium-gray);
}

.checkbox-wrapper input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-medium-gray);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark::after {
    content: '';
    width: 5px;
    height: 10px;
    border: 2px solid var(--color-white);
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
    margin-top: -2px;
}

.forgot-password {
    color: var(--color-primary);
    font-weight: 600;
    transition: color var(--transition-fast);
}

.forgot-password:hover {
    color: var(--color-primary-dark);
}

.form-options a {
    color: var(--color-primary);
    font-weight: 600;
}

/* Botón de envío */
.btn-auth-submit {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-md);
}

.btn-auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
}

.btn-auth-submit svg {
    width: 20px;
    height: 20px;
}

.btn-auth-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Divider */
.auth-divider {
    position: relative;
    text-align: center;
    margin: var(--spacing-lg) 0;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--color-light-gray);
}

.auth-divider span {
    position: relative;
    background: var(--color-white);
    padding: 0 var(--spacing-md);
    font-size: 0.85rem;
    color: var(--color-medium-gray);
}

/* Auth Social */
.social-auth {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-social {
    flex: 1;
    padding: var(--spacing-sm);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-dark);
    background: var(--color-white);
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.btn-social:hover {
    border-color: var(--color-medium-gray);
    background: var(--color-light-gray);
    transform: translateY(-2px);
}

.btn-social svg {
    width: 20px;
    height: 20px;
}

.btn-social.google:hover {
    border-color: #4285F4;
    background: rgba(66, 133, 244, 0.1);
}

.btn-social.facebook:hover {
    border-color: #1877F2;
    background: rgba(24, 119, 242, 0.1);
}

/* Mensaje de éxito */
.auth-success {
    display: none;
    text-align: center;
    padding: var(--spacing-xl) 0;
    animation: fadeIn var(--transition-normal);
}

.auth-success.active {
    display: block;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: success-pop 0.5s ease-out;
}

.success-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-white);
}

.auth-success h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.auth-success p {
    color: var(--color-medium-gray);
    font-size: 1rem;
}

@keyframes success-pop {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Scrollbar para el modal */
.auth-modal-container::-webkit-scrollbar {
    width: 8px;
}

.auth-modal-container::-webkit-scrollbar-track {
    background: var(--color-light-gray);
    border-radius: var(--radius-full);
}

.auth-modal-container::-webkit-scrollbar-thumb {
    background: var(--color-medium-gray);
    border-radius: var(--radius-full);
}

.auth-modal-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* ========================================
   BOTÓN FLOTANTE DE WHATSAPP
   ======================================== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    background: #25D366;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition-normal);
    animation: whatsapp-pulse 2s ease-in-out infinite;
}

.whatsapp-float:hover {
    background: #20BA5A;
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
    width: 38px;
    height: 38px;
    color: var(--color-white);
}

.whatsapp-tooltip {
    position: absolute;
    right: 75px;
    background: var(--color-white);
    color: var(--color-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all var(--transition-normal);
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    top: 50%;
    left: -6px;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--color-white);
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

@keyframes whatsapp-pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 4px 30px rgba(37, 211, 102, 0.8);
        transform: scale(1.05);
    }
}

/* ========================================
   MEDIA QUERIES - RESPONSIVE
   ======================================== */

/* Tablet */
@media (max-width: 992px) {
    .hero-features {
        gap: var(--spacing-lg);
    }
    
    .feature svg {
        width: 35px;
        height: 35px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-dark);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-xl);
        transition: left var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.5rem;
    }
    
    .btn-mobile-menu {
        display: flex;
    }
    
    .hero {
        background-attachment: scroll;
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }

    .catalog-filters {
        flex-direction: column;
        align-items: center;
    }

    .filter-btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }

    .contact-info li {
        justify-content: center;
    }

    .footer-social {
        display: flex;
        justify-content: center;
    }

    .policies-links {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
}

/* Mobile Small */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .loading-offer {
        font-size: 2rem;
    }

    .nav {
        padding: var(--spacing-sm);
    }

    .logo-text {
        font-size: 1.2rem;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
    }

    .whatsapp-float svg {
        width: 30px;
        height: 30px;
    }

    .whatsapp-tooltip {
        display: none;
    }

    .productos-grid {
        grid-template-columns: 1fr;
    }

    .producto-image {
        height: 200px;
    }

    .btn-add-cart {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }

    .auth-modal-container {
        width: 95%;
        padding: var(--spacing-lg);
    }

    .auth-modal-title {
        font-size: 1.5rem;
    }

    .auth-tabs {
        flex-direction: column;
        background: transparent;
        padding: 0;
    }

    .auth-tab {
        background: var(--color-light-gray);
        margin-bottom: var(--spacing-xs);
    }

    .form-options {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }

    .social-auth {
        flex-direction: column;
    }

    /* Ofertas responsivo */
    .offers-grid {
        grid-template-columns: 1fr;
    }

    .offer-image {
        height: 200px;
    }

    /* Contacto responsivo */
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        padding: var(--spacing-lg);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    /* Carrito responsivo */
    .cart-sidebar-panel {
        max-width: 100%;
    }

    .cart-item {
        padding: var(--spacing-sm);
    }

    .cart-item-image {
        width: 60px;
        height: 60px;
    }

    .payment-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .btn-checkout,
    .btn-checkout-continue {
        font-size: 0.95rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .checkout-total {
        font-size: 0.85rem;
    }
}

/* ========================================
   SECCIÓN DE OFERTAS
   ======================================== */
.offers-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #FFF5F0 0%, #FFFFFF 100%);
}

.offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.offer-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
}

.offer-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.offer-card.highlight {
    border: 2px solid var(--color-primary);
}

.offer-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 700;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    z-index: 10;
}

.offer-card.highlight .offer-badge {
    background: #27ae60;
}

.offer-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background: var(--color-light-gray);
}

.offer-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.offer-card:hover .offer-image img {
    transform: scale(1.1);
}

.offer-info {
    padding: var(--spacing-lg);
}

.offer-info h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.offer-description {
    color: var(--color-medium-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.offer-price {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.old-price {
    font-size: 0.95rem;
    color: var(--color-medium-gray);
    text-decoration: line-through;
}

.new-price {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
}

.btn-add-offer {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-dark);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-add-offer:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 0, 0.3);
}

/* ========================================
   SECCIÓN DE CONTACTO
   ======================================== */
.contact-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
}

.contact-info-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-light-gray);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.contact-info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-white);
}

.contact-info-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.contact-info-card p {
    color: var(--color-medium-gray);
    font-size: 0.95rem;
    line-height: 1.8;
}

.contact-form-container {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-xxl);
    background: var(--color-light-gray);
    border-radius: var(--radius-xl);
}

.contact-form-container h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-input-contact,
.form-textarea-contact {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-dark);
    background: var(--color-white);
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input-contact:focus,
.form-textarea-contact:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.1);
}

.form-textarea-contact {
    resize: vertical;
    min-height: 120px;
}

.btn-submit-contact {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-md);
}

.btn-submit-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 0, 0.4);
}

.btn-submit-contact svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   UTILIDADES
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible para accesibilidad */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--color-medium-gray);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}