/* --- VARIABLES ULTRA PREMIUM --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap');

:root {
    /* Cambia el color oscuro por un azul rey/tecnológico muy limpio */
    --primary-color: #1e3a8a; /* Azul fuerte y confiable */
    --accent-color: #3b82f6;  /* Azul vibrante tecnológico */
    --bg-color: #f8fafc;
    --text-color: #334155;
    --card-bg: #ffffff;
    --border-radius: 16px;    /* Bordes más redondeados y modernos */
    --shadow-soft: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif; /* Tipografía Premium */
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased; /* Suaviza las letras en pantallas Mac/iOS */
}

.container {
    max-width: 900px; 
    margin: 0 auto;
    padding: 20px;
}

/* Header con Gradiente Sutil */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e293b 100%);
    color: white;
    padding: 40px 20px;
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: 30px;
    box-shadow: var(--shadow-soft);
}
header h1 { font-size: 2.2rem; font-weight: 800; letter-spacing: -1px; color: white;}
header p { font-size: 1.1rem; opacity: 0.8; margin-top: 8px; font-weight: 400;}

/* Tarjetas (Content Box) con Hover Effect */
.content-box {
    background-color: var(--card-bg);
    padding: 35px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    margin-bottom: 30px;
    border: 1px solid #f1f5f9;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.content-box:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

h1, h2, h3 { color: var(--primary-color); font-weight: 800; letter-spacing: -0.5px; }
h1 { font-size: 1.8rem; margin-bottom: 20px; line-height: 1.2; }
h2 { font-size: 1.4rem; margin-top: 35px; margin-bottom: 15px; border-bottom: 2px solid #f1f5f9; padding-bottom: 10px;}

/* Estética de Imagen Hero */
.hero-image {
    width: 100%;
    height: 300px; 
    object-fit: cover;
    border-radius: 12px;
    margin: 10px 0 30px 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Buscador Moderno */
.search-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 35px 0;
    background: #f1f5f9;
    padding: 25px;
    border-radius: 16px;
}
.search-input {
    width: 100%;
    padding: 18px 24px;
    font-size: 16px;
    border: 2px solid transparent;
    border-radius: 12px;
    outline: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    transition: all 0.3s ease;
    font-family: inherit;
}
.search-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}
.search-btn {
    padding: 18px 35px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s, transform 0.1s;
}
.search-btn:hover { background-color: #2563eb; }
.search-btn:active { transform: scale(0.98); }

/* Caja de Advertencia */
.warning-box {
    background-color: #fff7ed;
    border-left: 6px solid #f97316;
    padding: 20px;
    border-radius: 0 12px 12px 0;
    margin: 25px 0;
    font-size: 1rem;
    color: #c2410c;
}

/* Espacios AdSense */
.ad-slot {
    background-color: #f8fafc;
    border: 2px dashed #cbd5e1;
    color: #94a3b8;
    text-align: center;
    padding: 15px;
    margin: 30px 0;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

footer { text-align: center; padding: 30px; font-size: 0.9rem; color: #64748b; }
footer a { color: var(--primary-color); text-decoration: none; margin: 0 12px; font-weight: 600; }
footer a:hover { color: var(--accent-color); }

@media (min-width: 768px) {
    .search-container { flex-direction: row; }
    h1 { font-size: 2.2rem; }
}