:root {
    /* Paleta de colores neutros y cálidos (Premium Minimalist) */
    --color-bg: #fdfcf9; /* Fondo claro cálido */
    --color-text: #1a1a1a; /* Texto oscuro suave */
    --color-text-muted: #666666;
    --color-border: #e5e5e5;
    --color-accent: #2c2c2c;
    --color-white: #ffffff;
    --color-error: #a33b3b;
    --color-success: #3b7a57;

    /* Tipografía */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Contenedores */
    --container-max-width: 1400px;

    /* Responsive Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .font-serif {
    font-family: var(--font-serif);
    font-weight: 400;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.2s;
}

a:hover {
    opacity: 0.7;
}

ul {
    list-style: none;
}

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

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

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

.section {
    padding: var(--spacing-md) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-lg) 0;
    }
}

/* Componentes */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border: 1px solid var(--color-accent);
    background: transparent;
    color: var(--color-accent);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
    width: 100%;
}

@media (min-width: 640px) {
    .btn {
        width: auto;
    }
}

.btn:hover {
    background: var(--color-accent);
    color: var(--color-white);
    opacity: 1;
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--color-accent);
}

.input {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-white);
    font-family: var(--font-sans);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem; /* Better for mobile to avoid zoom */
}

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

/* Art Cards */
.art-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 480px) {
    .art-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 900px) {
    .art-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1200px) {
    .art-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.art-card {
    display: flex;
    flex-direction: column;
}

.art-card__image {
    aspect-ratio: 4/5;
    overflow: hidden;
    background: #f0f0f0;
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.art-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.art-card__info {
    margin-top: var(--spacing-xs);
}

.art-card__artist {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    color: var(--color-text-muted);
}

.art-card__title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    margin: 0.2rem 0;
}

.art-card__price {
    font-weight: 500;
    font-size: 0.9rem;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.4rem;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    border: 1px solid var(--color-border);
}

/* Pagination */
.pagination-container {
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-lg);
}

.pagination-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pagination-numbers {
    display: flex;
    gap: 0.5rem;
}

.pagination-link, .pagination-number {
    background: transparent;
    border: 1px solid transparent;
    color: var(--color-text);
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pagination-number {
    min-width: 40px;
    justify-content: center;
}

.pagination-number:hover, .pagination-link:not(.disabled):hover {
    border-color: var(--color-accent);
}

.pagination-number.active {
    background: var(--color-accent);
    color: var(--color-white);
}

.pagination-link.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.pagination-dots {
    padding: 0.5rem;
    color: var(--color-text-muted);
}

.desktop-only {
    display: none;
}

.mobile-only {
    display: block;
}

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

    .mobile-only {
        display: none;
    }
}

/* Header & Footer */
.header {
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.header__logo {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.1rem;
}

.nav {
    display: none;
    gap: var(--spacing-md);
}

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

.nav__link {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Footer */
.footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xl);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

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

@media (min-width: 768px) {
    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

@media (min-width: 768px) {
    .mobile-nav-toggle {
        display: none;
    }
}

.mobile-nav-toggle span {
    display: block;
    width: 24px;
    height: 1px;
    background: var(--color-text);
}

/* Responsive Overrides */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem !important; }
    h2 { font-size: 2rem !important; }
    .section { padding: var(--spacing-md) 0; }
}

/* Cart & Checkout Responsive */
.cart-grid-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .cart-grid-container {
        grid-template-columns: 1fr 350px;
        gap: 4rem;
    }
}

.cart-item-row {
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

@media (min-width: 640px) {
    .cart-item-row {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.cart-item-info {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .cart-item-info {
        margin-bottom: 0;
    }
}

/* Utils */
.text-center { text-align: center; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-4 { margin-bottom: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-md); }