/* --- Variables de diseño --- */
:root {
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --color-bg-dark: #121212;
    --color-bg-medium: #1E1E1E;
    --color-bg-light: #2A2A2A;
    --color-text-light: #F5F5F5;
    --color-text-medium: #A3A3A3;
    --color-accent: #3b82f6; /* Azul vibrante */
    --color-accent-hover: #60a5fa; /* Azul más claro para hover */
    --section-padding: 6rem 0;
    --container-width: 1200px;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-secondary);
    line-height: 1.7;
    background-color: var(--color-bg-dark);
    color: var(--color-text-medium);
    overflow-x: hidden;
}
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }
img { max-width: 100%; display: block; height: auto; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition-speed) ease; }
a:hover { color: var(--color-accent-hover); }
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    color: var(--color-text-light);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}
.section-padding { padding: var(--section-padding); }

/* --- Header --- */
#main-header {
    background-color: rgba(18, 18, 18, 0.7); backdrop-filter: blur(12px);
    padding: 1rem 0; position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}
#main-header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: var(--font-primary); font-size: 1.8rem; font-weight: 900; color: var(--color-text-light); line-height: 1.1; }
.logo span { color: var(--color-accent); }
#main-nav ul { list-style: none; display: flex; }
#main-nav ul li { margin-left: 25px; }
#main-nav ul li a { color: var(--color-text-light); font-weight: 600; font-size: 0.95rem; }

/* --- Hero Section --- */
.hero {
    height: 100vh; min-height: 600px; display: flex; align-items: center; justify-content: center;
    text-align: center; position: relative; color: #fff;
}
.hero-bg-slider { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; }
.hero-bg-slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center center; background-repeat: no-repeat; opacity: 0; transition: opacity 2s ease-in-out; }
.hero-bg-slide.active { opacity: 1; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to bottom, rgba(18,18,18,0.3) 0%, rgba(18,18,18,0.8) 100%); }
.hero-content { position: relative; z-index: 1; }
.hero-title { font-size: clamp(2.5rem, 6vw, 5rem); font-weight: 900; margin-bottom: 0.5rem; letter-spacing: -1px; color: #fff; text-shadow: 0 2px 10px rgba(0,0,0,0.5); }
.hero-subtitle { font-size: clamp(1rem, 2.5vw, 1.5rem); font-family: var(--font-secondary); margin-bottom: 2rem; color: rgba(245,245,245,0.9); font-weight: 400; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-button { display: inline-block; background-color: var(--color-accent); color: var(--color-text-light); padding: 14px 35px; border-radius: var(--border-radius); font-weight: 700; font-family: var(--font-primary); text-transform: uppercase; letter-spacing: 1px; transition: background-color var(--transition-speed) ease, transform var(--transition-speed) ease; box-shadow: var(--shadow-md); }
.cta-button:hover { background-color: var(--color-accent-hover); transform: translateY(-3px); color: var(--color-text-light); }
.scroll-down-indicator { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); color: #fff; font-size: 1.5rem; animation: bounce 2s infinite; }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); } 40% { transform: translateX(-50%) translateY(-10px); } 60% { transform: translateX(-50%) translateY(-5px); } }

/* --- Section Styling --- */
.section-title { font-size: clamp(2rem, 5vw, 3rem); text-align: center; margin-bottom: 1rem; position: relative; padding-bottom: 1rem; }
.section-title::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background-color: var(--color-accent); border-radius: 2px; }
.section-intro { text-align: center; max-width: 700px; margin: 0 auto 3rem auto; font-size: 1.1rem; color: var(--color-text-medium); }

/* --- Categories Section --- */
.category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; margin-top: 3rem; }
.category-card { position: relative; height: 450px; border-radius: var(--border-radius); overflow: hidden; display: flex; align-items: flex-end; text-decoration: none; box-shadow: var(--shadow-md); transition: transform 0.4s ease, box-shadow 0.4s ease; }
.category-card:hover { transform: translateY(-10px); box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1); }
.category-card-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform 0.6s ease; }
.category-card:hover .category-card-bg { transform: scale(1.05); }
.category-card-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to top, rgba(18,18,18,0.9) 0%, rgba(18,18,18,0.1) 60%, rgba(18,18,18,0) 100%); }
.category-card-content { position: relative; z-index: 2; padding: 2rem; color: #fff; }
.category-card-title { font-size: 1.8rem; color: #fff; margin: 0 0 0.25rem 0; }
.category-card-subtitle { font-size: 1rem; color: var(--color-text-medium); margin: 0; }

/* --- About Section --- */
.about-section { background-color: var(--color-bg-medium); }
.about-content { display: grid; grid-template-columns: 2fr 1fr; gap: 3rem; align-items: center; }
.about-text p { margin-bottom: 1.5rem; color: var(--color-text-medium); }
.about-image img { border-radius: var(--border-radius); border: 5px solid var(--color-accent); box-shadow: var(--shadow-md); }

/* --- Contact Section --- */
.contact-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; margin-top: 3rem; }
.contact-link { color: inherit; }
.contact-option {
    background-color: var(--color-bg-medium); padding: 2.5rem 2rem; border-radius: var(--border-radius);
    text-align: center; border: 1px solid var(--color-bg-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex; flex-direction: column; align-items: center;
}
.contact-option:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
.contact-option i { font-size: 2.5rem; color: var(--color-accent); margin-bottom: 1.5rem; line-height: 1; }
.contact-option h3 { font-size: 1.2rem; color: var(--color-text-light); margin-bottom: 0.5rem; }
.contact-option p { font-size: 0.9rem; color: var(--color-text-medium); margin: 0; font-family: var(--font-secondary); }

/* --- Footer --- */
#main-footer { background-color: #0c0c0c; color: var(--color-text-medium); text-align: center; padding: 3rem 0; margin-top: 4rem; font-size: 0.9rem; }
.footer-social { margin-bottom: 1rem; }
.footer-social a { color: var(--color-text-medium); font-size: 1.3rem; margin: 0 10px; }
.footer-social a:hover { color: var(--color-accent); }

/* --- Responsive --- */
@media (max-width: 768px) {
    html { font-size: 15px; }
    .section-padding { padding: 4rem 0; }
    #main-header .container { flex-direction: column; }
    #main-nav ul { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background-color: var(--color-bg-medium); padding: 1rem 0; box-shadow: var(--shadow-md); }
    #main-nav ul.active { display: flex; }
    #main-nav ul li { margin: 0; width: 100%; }
    #main-nav ul li a { display: block; padding: 1rem 20px; text-align: center; }
    .hero { min-height: 500px; }
    .category-grid { grid-template-columns: 1fr; }
    .about-content { grid-template-columns: 1fr; }
    .about-image { margin-top: 2rem; display: flex; justify-content: center; }
}