/* ===================================== */
/* ESTILOS GLOBALES & RESET BÁSICO      */
/* ===================================== */
:root {
    --color-primario: #2c3e50; /* Azul oscuro elegante */
    --color-acento: #e74c3c;   /* Rojo ladrillo, distintivo */
    --color-texto-claro: #f8f8f8;
    --color-texto-oscuro: #34495e;
    --color-fondo-claro: #ffffff;
    --color-fondo-gris: #f7f7f7;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --espaciado-lg: 3rem;
    --espaciado-md: 2rem;
    --espaciado-sm: 1rem;

    --borde-radio: 8px;
    --sombra-card: 0 4px 10px rgba(0,0,0,0.08);
}

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

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-texto-oscuro);
    background-color: var(--color-fondo-claro);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--color-primario);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-acento);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-texto-oscuro);
    font-weight: 600;
}

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

.btn-principal {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: var(--borde-radio);
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    background-color: var(--color-primario);
    color: var(--color-texto-claro);
}

.btn-principal:hover {
    background-color: var(--color-acento);
    color: var(--color-texto-claro);
    transform: translateY(-2px);
    box-shadow: var(--sombra-card);
}

/* ===================================== */
/* HEADER & NAVIGATION                   */
/* ===================================== */
header {
    background-color: var(--color-fondo-claro);
    border-bottom: 1px solid #eee;
    padding: var(--espaciado-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--espaciado-md);
}

header nav .logo img {
    height: 40px;
    vertical-align: middle;
}

header nav ul {
    list-style: none;
    display: flex;
    gap: var(--espaciado-md);
}

header nav ul li a {
    font-weight: 500;
    font-size: 1.05rem;
    padding: 0.5rem 0;
    position: relative;
}

header nav ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-acento);
    transition: width 0.3s ease;
}

header nav ul li a:hover::after {
    width: 100%;
}

/* ===================================== */
/* SECCIONES COMUNES                     */
/* ===================================== */
section {
    padding: var(--espaciado-lg) 0;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: var(--espaciado-lg);
    position: relative;
    padding-bottom: var(--espaciado-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--color-acento);
    border-radius: 2px;
}

.grid-productos, .grid-categorias {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--espaciado-md);
    padding: 0 var(--espaciado-md);
    max-width: 1200px;
    margin: var(--espaciado-md) auto;
}

.card-producto {
    background-color: var(--color-fondo-claro);
    border-radius: var(--borde-radio);
    overflow: hidden;
    text-align: center;
    box-shadow: var(--sombra-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.card-producto:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.card-producto a {
    display: block;
    color: inherit;
}

.card-producto img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card-producto:hover img {
    transform: scale(1.03);
}

.card-producto h3 {
    font-size: 1.3rem;
    margin: var(--espaciado-sm) 0 0.5rem 0;
    padding: 0 var(--espaciado-sm);
    flex-grow: 1;
}

.card-producto .precio {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-acento);
    margin-bottom: var(--espaciado-sm);
    padding: 0 var(--espaciado-sm);
}

/* ===================================== */
/* INDEX.PHP ESPECÍFICO                  */
/* ===================================== */
.hero-section {
    background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('../images/hero-banner.jpg');
    background-size: cover;
    background-position: center;
    color: var(--color-texto-claro);
    padding: 120px 20px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
}

.hero-content {
    max-width: 800px;
    animation: fadeIn 1s ease-out forwards;
    opacity: 0;
}

.hero-content h1 {
    font-size: 4.5rem;
    margin-bottom: var(--espaciado-sm);
    color: var(--color-texto-claro);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-content p {
    font-size: 1.8rem;
    margin-bottom: var(--espaciado-md);
    color: var(--color-texto-claro);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}

.categorias-section {
    background-color: var(--color-fondo-gris);
}

.card-categoria {
    min-height: 200px;
    border-radius: var(--borde-radio);
    overflow: hidden;
    color: var(--color-texto-claro);
    background-color: var(--color-primario);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    box-shadow: var(--sombra-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-categoria:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.card-categoria-content {
    background-color: rgba(0,0,0,0.4);
    padding: var(--espaciado-md);
    text-align: center;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-categoria-content h3 {
    font-size: 2rem;
    color: var(--color-texto-claro);
    margin: 0;
}

.cta-section {
    background-color: var(--color-primario);
    color: var(--color-texto-claro);
    text-align: center;
    padding: var(--espaciado-lg) 0;
}

.cta-section h2 {
    font-size: 3rem;
    margin-bottom: var(--espaciado-sm);
    color: var(--color-texto-claro);
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: var(--espaciado-md);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.social-links a {
    color: var(--color-texto-claro);
    font-size: 2rem;
    margin: 0 var(--espaciado-sm);
}

/* ===================================== */
/* FOOTER                                */
/* ===================================== */
footer {
    background-color: var(--color-texto-oscuro);
    color: var(--color-texto-claro);
    text-align: center;
    padding: var(--espaciado-md) 0;
    font-size: 0.9rem;
}

/* ===================================== */
/* ANIMACIONES PERSONALIZADAS            */
/* ===================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===================================== */
/* RESPONSIVE DESIGN                     */
/* ===================================== */
@media (max-width: 768px) {
    header nav {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-content h1 {
        font-size: 3rem;
    }

    .hero-content p {
        font-size: 1.2rem;
    }
}