/* --- VARIABLES DE DISEÑO ARFLO --- */
:root {
    /* Paleta de Colores del Catálogo */
    --color-primary: rgba(37, 99, 235, 1);       /* Azul principal (botones, enlaces) */
    --color-primary-dark: rgba(30, 58, 138, 1);   /* Azul oscuro (footer) */
    --color-primary-light: rgba(219, 234, 254, 1); /* Azul claro (fondos) */
    --color-text: rgba(15, 23, 42, 1);            /* Texto principal (casi negro) */
    --color-text-secondary: rgba(100, 116, 139, 1);/* Texto secundario (gris) */
    --color-surface: rgba(255, 255, 255, 1);     /* Fondo de tarjetas y header */
    --color-background: rgba(248, 250, 252, 1);  /* Fondo general de la página */
    --color-border: rgba(226, 232, 240, 1);      /* Bordes sutiles */
    --color-success: rgba(22, 163, 74, 1);         /* Verde para notificaciones */

    /* Tipografía */
    
    /* Tipografía Nueva */
    --font-family-base: 'Inter', sans-serif;
    --font-family-headings: 'Montserrat', sans-serif; /* Nueva variable para títulos */
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Espaciado y Radios */
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 32px;
    --radius-base: 8px;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

/* --- ESTILOS GENERALES --- */
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}
h1, h2, h3 { font-family: var(--font-family-headings); font-weight: 600; line-height: 1.2; margin: 0; }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
p { margin: 0 0 var(--space-md) 0; }
a { color: var(--color-primary); text-decoration: none; }

/* --- COMPONENTES REUTILIZABLES --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px var(--space-md);
    border-radius: var(--radius-base);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}
.btn--primary {
    background-color: var(--color-primary);
    color: white;
}
.btn--primary:hover { background-color: var(--color-primary-dark); }
.btn--outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn--outline:hover { background-color: var(--color-primary-light); }
.btn--full-width { width: 100%; }

.section-title { text-align: center; margin-bottom: var(--space-md); }
.section-subtitle { text-align: center; color: var(--color-text-secondary); max-width: 600px; margin: 0 auto var(--space-lg) auto; }
.catalog-section { padding: var(--space-lg) 0; }
.alternate-bg { background-color: var(--color-surface); }

/* --- HEADER Y NAVEGACIÓN --- */
.header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}
.navbar { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.logo { display: flex; align-items: center; gap: var(--space-sm); font-size: 1.5rem; font-weight: 700; color: var(--color-primary-dark); }
.nav-menu { list-style: none; display: flex; gap: var(--space-md); margin: 0; padding: 0; }
.nav-link { color: var(--color-text-secondary); font-weight: 500; padding: var(--space-sm); border-radius: 4px; transition: all 0.2s ease; }
.nav-link:hover, .nav-link.active { color: var(--color-primary); background-color: var(--color-primary-light); }
.nav-actions { display: flex; align-items: center; gap: var(--space-md); }
.cart-btn { position: relative; background: none; border: none; font-size: 1.25rem; cursor: pointer; color: var(--color-text); }
.cart-count { position: absolute; top: -5px; right: -10px; background: var(--color-primary); color: white; border-radius: 50%; width: 20px; height: 20px; font-size: 12px; font-weight: bold; display: flex; align-items: center; justify-content: center; }
.nav-toggle { display: none; font-size: 1.5rem; background: none; border: none; cursor: pointer; }
.logo img {
    height: 63px; /* Puedes ajustar este valor */
    width: auto;
}
/* --- SECCIONES --- */
.hero { padding: calc(var(--space-lg) * 2) 0; text-align: center; background-color: var(--color-primary-light); }
.hero h1 { margin-bottom: var(--space-md); }
.hero p { max-width: 600px; margin: 0 auto var(--space-lg) auto; color: var(--color-text-secondary); }
.hero-buttons { display: flex; justify-content: center; gap: var(--space-md); }
.promo-banner { background-color: var(--color-primary); color: white; text-align: center; padding: 12px 0; }
.promo-content { display: flex; align-items: center; justify-content: center; gap: var(--space-md); font-weight: 500; }

/* Grid de Productos */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}
.product-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.product-image { height: 200px; background-color: #f0f0f0; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-image img { width: 100%; height: 100%; object-fit: cover; }
.product-image .placeholder-icon { font-size: 4rem; color: var(--color-text-secondary); }
.product-info { padding: var(--space-md); flex-grow: 1; display: flex; flex-direction: column; }
.product-name { font-size: 1.1rem; margin-bottom: var(--space-sm); }
.product-desc { color: var(--color-text-secondary); font-size: 0.9rem; margin-bottom: var(--space-md); flex-grow: 1; }
.product-footer { margin-top: auto; display: flex; justify-content: space-between; align-items: center; }
.product-price { font-size: 1.25rem; font-weight: 600; color: var(--color-primary-dark); }

/* --- CONTACTO --- */
.contact-content { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); max-width: 900px; margin: 0 auto; }
.contact-info .contact-item { display: flex; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-sm); }
.contact-info i { color: var(--color-primary); width: 20px; }
.form-group { margin-bottom: var(--space-md); }
.form-control { width: 100%; padding: 12px; border: 1px solid var(--color-border); border-radius: var(--radius-base); font-size: 1rem; }
.form-control:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }

/* --- MODAL CARRITO --- */
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; opacity: 0; visibility: hidden; transition: all 0.3s; }
.modal:not(.hidden) { opacity: 1; visibility: visible; }
.modal-content { background: var(--color-surface); border-radius: var(--radius-base); width: 90%; max-width: 500px; box-shadow: var(--shadow-md); transform: scale(0.95); transition: transform 0.3s; }
.modal:not(.hidden) .modal-content { transform: scale(1); }
.modal-header, .modal-footer { padding: var(--space-md); display: flex; justify-content: space-between; align-items: center; }
.modal-header { border-bottom: 1px solid var(--color-border); }
.modal-footer { border-top: 1px solid var(--color-border); gap: var(--space-md); }
.modal-close { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--color-text-secondary); }
.modal-body { padding: var(--space-md); max-height: 60vh; overflow-y: auto; }
.cart-item { display: flex; gap: var(--space-md); align-items: center; padding-bottom: var(--space-md); border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-md); }
.cart-item-info { flex-grow: 1; }
.cart-item-name { font-weight: 600; }
.cart-item-price { color: var(--color-text-secondary); }
.quantity-controls { display: flex; align-items: center; gap: var(--space-sm); }
.quantity-btn { background: var(--color-background); border: 1px solid var(--color-border); width: 28px; height: 28px; border-radius: 4px; cursor: pointer; }
.remove-item-btn { background: none; border: none; color: var(--color-text-secondary); cursor: pointer; }
.cart-total { text-align: right; font-weight: bold; font-size: 1.2rem; padding-top: var(--space-md); }
.empty-cart-msg { text-align: center; color: var(--color-text-secondary); padding: var(--space-lg); }

/* --- FOOTER --- */
.footer { background-color: var(--color-primary-dark); color: white; padding: var(--space-lg) 0; text-align: center; }
.footer p { margin: 0; color: rgba(255,255,255,0.8); }
.footer p:first-child { margin-bottom: var(--space-sm); }

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-menu { position: fixed; top: 70px; left: -100%; width: 100%; height: calc(100vh - 70px); background: var(--color-surface); flex-direction: column; align-items: center; padding-top: var(--space-lg); gap: var(--space-lg); transition: left 0.3s ease; }
    .nav-menu.active { left: 0; }
    .contact-content { grid-template-columns: 1fr; }
}