/* ============================================
   FARMACIA ROBERTO VALERO - TIENDA ONLINE
   Estilo: Farmacéutico Premium / Luxury Minimal
   ============================================ */

/* === CSS VARIABLES === */
:root {
    /* Brand Colors */
    --color-verde: #4e6d66;
    --color-verde-dark: #2d4a44;
    --color-verde-light: #6a8a82;
    --color-dorado: #c8a96e;
    --color-dorado-light: #d9c499;
    --color-dorado-dark: #a68b4f;
    
    /* Neutrals */
    --color-fondo: #f4f9fe;
    --color-blanco: #ffffff;
    --color-negro: #1a1a1a;
    --color-gris-100: #f7f7f7;
    --color-gris-200: #e8e8e8;
    --color-gris-300: #d1d1d1;
    --color-gris-400: #9a9a9a;
    --color-gris-500: #6b6b6b;
    --color-gris-600: #4a4a4a;
    
    /* Semantic */
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Layout */
    --container-max: 1280px;
    --container-padding: 1.5rem;
    
    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* === RESET === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-negro);
    background-color: var(--color-fondo);
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

address {
    font-style: normal;
}

/* === UTILITIES === */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.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;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.01em;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

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

.btn--secondary {
    background: transparent;
    color: var(--color-verde);
    border: 1.5px solid var(--color-verde);
}

.btn--secondary:hover {
    background: var(--color-verde);
    color: var(--color-blanco);
}

.btn--gold {
    background: var(--color-dorado);
    color: var(--color-negro);
}

.btn--gold:hover {
    background: var(--color-dorado-dark);
}

.btn--sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

.btn--full {
    width: 100%;
}

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.header__logo-img {
    height: 40px;
    width: auto;
}

.header__nav {
    display: none;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .header__nav {
        display: flex;
    }
}

.header__nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-gris-600);
    transition: color var(--transition-fast);
    position: relative;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-dorado);
    transition: width var(--transition-base);
}

.header__nav-link:hover {
    color: var(--color-verde);
}

.header__nav-link:hover::after {
    width: 100%;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.header__search-btn,
.header__cart-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--color-gris-600);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.header__search-btn:hover,
.header__cart-btn:hover {
    background: var(--color-gris-100);
    color: var(--color-verde);
}

.header__cart-btn {
    position: relative;
}

.header__cart-count {
    position: absolute;
    top: 6px;
    right: 6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 11px;
    font-weight: 700;
    line-height: 18px;
    text-align: center;
    color: var(--color-blanco);
    background: var(--color-dorado);
    border-radius: var(--radius-full);
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--transition-fast);
}

.header__cart-count.visible {
    opacity: 1;
    transform: scale(1);
}

.header__menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 12px;
}

@media (min-width: 768px) {
    .header__menu-btn {
        display: none;
    }
}

.header__menu-btn span {
    display: block;
    height: 2px;
    background: var(--color-gris-600);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.header__menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.header__menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Search Bar */
.header__search {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-blanco);
    border-bottom: 1px solid var(--color-gris-200);
    padding: var(--space-md) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.header__search.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.header__search-container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.header__search-input {
    flex: 1;
    padding: var(--space-md);
    font-size: 1rem;
    border: 1px solid var(--color-gris-200);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast);
}

.header__search-input:focus {
    border-color: var(--color-verde);
}

.header__search-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-gris-500);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.header__search-close:hover {
    background: var(--color-gris-100);
    color: var(--color-negro);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-blanco);
    z-index: 99;
    padding: var(--space-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateX(100%);
    transition: all var(--transition-slow);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.mobile-menu__link {
    display: block;
    padding: var(--space-md) 0;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-gris-600);
    border-bottom: 1px solid var(--color-gris-200);
    transition: color var(--transition-fast);
}

.mobile-menu__link:hover {
    color: var(--color-verde);
}

/* === HERO === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(72px + var(--space-3xl)) var(--container-padding) var(--space-3xl);
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(78, 109, 102, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(200, 169, 110, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-fondo) 0%, var(--color-blanco) 100%);
    z-index: -1;
}

.hero__bg::before {
    content: '';
    position: absolute;
    top: 15%;
    right: 5%;
    width: 400px;
    height: 400px;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234e6d66' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    opacity: 0.5;
}

.hero__content {
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 0.8s ease-out;
}

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

.hero__badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-dorado-dark);
    background: linear-gradient(135deg, rgba(200, 169, 110, 0.15), rgba(200, 169, 110, 0.05));
    border: 1px solid rgba(200, 169, 110, 0.3);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-xl);
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 500;
    line-height: 1.1;
    color: var(--color-verde-dark);
    margin-bottom: var(--space-lg);
}

.hero__title em {
    font-style: italic;
    color: var(--color-dorado);
}

.hero__subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-gris-500);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.hero__scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gris-400);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* === SECTION HEADER === */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header__badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-dorado-dark);
    margin-bottom: var(--space-md);
}

.section-header__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 500;
    color: var(--color-verde-dark);
}

/* === CATEGORÍAS === */
.categorias {
    padding: var(--space-4xl) 0;
    background: var(--color-blanco);
}

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

.categoria-card {
    position: relative;
    padding: var(--space-2xl);
    background: var(--color-fondo);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    overflow: hidden;
}

.categoria-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-verde), var(--color-dorado));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.categoria-card:hover {
    border-color: var(--color-gris-200);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.categoria-card:hover::before {
    opacity: 1;
}

.categoria-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-verde);
    color: var(--color-blanco);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.categoria-card__title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 500;
    color: var(--color-verde-dark);
    margin-bottom: var(--space-sm);
}

.categoria-card__count {
    font-size: 0.875rem;
    color: var(--color-gris-500);
}

/* === CATÁLOGO === */
.catalogo {
    padding: var(--space-4xl) 0;
}

.catalogo__filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-gris-200);
}

.catalogo__filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.catalogo__filter-btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gris-600);
    background: var(--color-blanco);
    border: 1px solid var(--color-gris-200);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.catalogo__filter-btn:hover {
    border-color: var(--color-verde);
    color: var(--color-verde);
}

.catalogo__filter-btn.active {
    background: var(--color-verde);
    border-color: var(--color-verde);
    color: var(--color-blanco);
}

.catalogo__sort-select {
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.875rem;
    font-family: var(--font-body);
    color: var(--color-gris-600);
    background: var(--color-blanco);
    border: 1px solid var(--color-gris-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition-fast);
}

.catalogo__sort-select:focus {
    border-color: var(--color-verde);
}

.catalogo__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-xl);
}

/* Product Card */
.producto-card {
    background: var(--color-blanco);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.producto-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.producto-card__image {
    position: relative;
    aspect-ratio: 1;
    background: var(--color-gris-100);
    overflow: hidden;
}

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

.producto-card:hover .producto-card__image img {
    transform: scale(1.05);
}

.producto-card__badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-blanco);
    background: var(--color-dorado);
    border-radius: var(--radius-sm);
}

.producto-card__badge--agotado {
    background: var(--color-gris-500);
}

.producto-card__quick-add {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-verde);
    color: var(--color-blanco);
    border-radius: var(--radius-full);
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.producto-card:hover .producto-card__quick-add {
    opacity: 1;
    transform: translateY(0);
}

.producto-card__quick-add:hover {
    background: var(--color-verde-dark);
    transform: scale(1.1);
}

.producto-card__content {
    padding: var(--space-lg);
}

.producto-card__category {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-dorado-dark);
    margin-bottom: var(--space-xs);
}

.producto-card__title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-verde-dark);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.producto-card__description {
    font-size: 0.875rem;
    color: var(--color-gris-500);
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.producto-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.producto-card__price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-verde);
}

.producto-card__price-old {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-gris-400);
    text-decoration: line-through;
    margin-right: var(--space-sm);
}

.producto-card__stock {
    font-size: 0.75rem;
    color: var(--color-gris-400);
}

.producto-card__stock--low {
    color: var(--color-warning);
}

.producto-card__stock--out {
    color: var(--color-error);
}

/* Loading & Empty States */
.catalogo__loading,
.catalogo__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl);
    color: var(--color-gris-500);
    text-align: center;
}

.catalogo__spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gris-200);
    border-top-color: var(--color-verde);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-md);
}

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

.catalogo__empty svg {
    margin-bottom: var(--space-md);
    color: var(--color-gris-300);
}

/* === INFO BANNER === */
.info-banner {
    padding: var(--space-4xl) 0;
    background: var(--color-verde-dark);
}

.info-banner__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
}

.info-banner__item {
    text-align: center;
    color: var(--color-blanco);
}

.info-banner__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    color: var(--color-dorado);
}

.info-banner__title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.info-banner__text {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* === FOOTER === */
.footer {
    background: var(--color-negro);
    color: var(--color-blanco);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

@media (max-width: 900px) {
    .footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .footer__grid {
        grid-template-columns: 1fr;
    }
}

.footer__logo {
    height: 48px;
    margin-bottom: var(--space-md);
}

.footer__tagline {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-lg);
}

.footer__social {
    display: flex;
    gap: var(--space-md);
}

.footer__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-blanco);
    transition: all var(--transition-fast);
}

.footer__social a:hover {
    background: var(--color-dorado);
    color: var(--color-negro);
}

.footer__heading {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: var(--space-lg);
    color: var(--color-dorado);
}

.footer__links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__links a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-blanco);
}

.footer__contact address {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer__contact a:hover {
    color: var(--color-dorado);
}

.footer__bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer__payments {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.footer__payments img {
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.footer__payments img:hover {
    opacity: 1;
}

/* === CART SIDEBAR === */
.cart-sidebar {
    position: fixed;
    inset: 0;
    z-index: 200;
    visibility: hidden;
}

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

.cart-sidebar__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.cart-sidebar__content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 420px;
    background: var(--color-blanco);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

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

.cart-sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--color-gris-200);
}

.cart-sidebar__header h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
}

.cart-sidebar__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-gris-500);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.cart-sidebar__close:hover {
    background: var(--color-gris-100);
    color: var(--color-negro);
}

.cart-sidebar__items {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

.cart-sidebar__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: var(--space-xl);
    text-align: center;
    color: var(--color-gris-500);
}

.cart-sidebar__empty svg {
    margin-bottom: var(--space-md);
    color: var(--color-gris-300);
}

.cart-sidebar__empty p {
    margin-bottom: var(--space-lg);
}

.cart-sidebar__footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--color-gris-200);
    background: var(--color-gris-100);
}

.cart-sidebar__total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    font-size: 1.125rem;
    font-weight: 600;
}

.cart-sidebar__total span:last-child {
    font-size: 1.375rem;
    color: var(--color-verde);
}

.cart-sidebar__view-cart {
    display: block;
    text-align: center;
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: var(--color-gris-600);
    text-decoration: underline;
}

.cart-sidebar__view-cart:hover {
    color: var(--color-verde);
}

/* Cart Item */
.cart-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-gris-200);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item__image {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-gris-100);
}

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

.cart-item__details {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.cart-item__title {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--color-negro);
    margin-bottom: var(--space-xs);
}

.cart-item__price {
    font-size: 0.875rem;
    color: var(--color-verde);
    font-weight: 600;
}

.cart-item__actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: auto;
}

.cart-item__qty {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.cart-item__qty-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gris-100);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    color: var(--color-gris-600);
    transition: all var(--transition-fast);
}

.cart-item__qty-btn:hover {
    background: var(--color-gris-200);
}

.cart-item__qty-value {
    min-width: 24px;
    text-align: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.cart-item__remove {
    color: var(--color-gris-400);
    font-size: 0.75rem;
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.cart-item__remove:hover {
    color: var(--color-error);
}

/* === TOAST === */
.toast-container {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-blanco);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    animation: slideIn 0.3s ease-out;
    max-width: 360px;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast--success {
    border-left: 4px solid var(--color-success);
}

.toast--error {
    border-left: 4px solid var(--color-error);
}

.toast__icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

.toast--success .toast__icon {
    color: var(--color-success);
}

.toast--error .toast__icon {
    color: var(--color-error);
}

.toast__message {
    font-size: 0.9375rem;
    color: var(--color-negro);
}

.toast__close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gris-400);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.toast__close:hover {
    background: var(--color-gris-100);
    color: var(--color-negro);
}

/* === RESPONSIVE === */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .hero__actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero__actions .btn {
        width: 100%;
    }
    
    .catalogo__filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .catalogo__filter-group {
        overflow-x: auto;
        padding-bottom: var(--space-sm);
        -webkit-overflow-scrolling: touch;
    }
    
    .catalogo__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }
    
    .producto-card__content {
        padding: var(--space-md);
    }
    
    .producto-card__title {
        font-size: 1rem;
    }
    
    .producto-card__description {
        display: none;
    }
    
    .toast-container {
        left: var(--space-md);
        right: var(--space-md);
        bottom: var(--space-md);
    }
    
    .toast {
        max-width: 100%;
    }
}