/* Variables de Color */
:root {
    --primary-blue: #0056b3; 
    --electric-blue: #00d4ff; 
    --dark-bg: #0a192f;      
    --text-color: #333;
    --light-bg: #f4f7f6;
    --results-bg: #cedce8; /* NUEVO: Fondo más oscuro para resultados */
    --white: #ffffff;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
}

/* Navegación */
.navbar {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.container {
    max-width: 1250px; /* Aumentado ligeramente para acomodar 5 columnas */
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-blue);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: #555;
    font-weight: 600;
    transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-blue);
}

/* Hero Section (Index) */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #004e92 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 60%);
    animation: pulse 10s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.8; }
    100% { transform: scale(1); opacity: 0.5; }
}

.hero-content {
    z-index: 2;
    padding: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 20px;
    color: var(--electric-blue);
}

.btn-main {
    display: inline-block;
    padding: 15px 30px;
    background-color: var(--electric-blue);
    color: var(--dark-bg);
    text-decoration: none;
    font-weight: 700;
    border-radius: 50px;
    margin-top: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 15px var(--electric-blue);
}

/* Search Section */
.search-section {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.search-section .container {
    display: block; 
}

.filter-container {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

input, select {
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    outline: none;
}

input {
    width: 300px;
}

/* Grid de Resultados */
.results-section {
    padding: 50px 0;
    background-color: var(--results-bg); /* Fondo más oscuro aplicado aquí */
}

/* Configuración para 5 columnas: minmax ajustado a 210px */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 20px;
}

.card {
    background: var(--white);
    border-radius: 8px; /* Radio un poco menor para tarjetas más chicas */
    padding: 20px;      /* Padding reducido para aprovechar espacio */
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s, border 0.3s;
    border-top: 4px solid transparent;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%; /* Asegura altura uniforme */
}

.card:hover {
    transform: translateY(-5px);
    border-top: 4px solid var(--electric-blue);
}

.card h3 {
    color: var(--primary-blue);
    margin-bottom: 8px;
    font-size: 1rem; /* Fuente más pequeña para caber en 5 columnas */
    line-height: 1.3;
}

.card .category-tag {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: #888;
    margin-bottom: 10px;
    display: block;
    font-weight: 600;
}

.card p {
    font-size: 0.85rem; /* Descripción más pequeña */
    color: #555;
    margin-bottom: 15px;
    line-height: 1.4;
}

.btn-card {
    text-align: center;
    padding: 8px;
    background: #eef2f5;
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    font-size: 0.8rem;
    transition: background 0.2s;
}

.btn-card:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.hidden {
    display: none;
}

#noResults {
    text-align: center;
    font-size: 1.2rem;
    color: #444;
    margin-top: 20px;
}

.footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .filter-container { flex-direction: column; align-items: center; }
    input, select { width: 100%; max-width: 400px; }
    /* En móvil se ajustará solo gracias al auto-fill, no hace falta forzar columnas */
}