:root {
    --bg: #f8fafc;
    --text: #0f172a;
    --muted: #334155;
    --brand-1: #22577a;
    --brand-2: #1d3557;
    --card: #ffffff;
    --card-border: rgba(15, 23, 42, 0.06);
    --footer: #222;
}

[data-theme="dark"] {
    --bg: #0b1220;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --brand-1: #0e7490;
    --brand-2: #0b4c6a;
    --card: #0f172a;
    --card-border: rgba(148, 163, 184, 0.2);
    --footer: #0b1220;
}

/* Preferencias del sistema */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0b1220;
        --text: #e2e8f0;
        --muted: #94a3b8;
        --brand-1: #0e7490;
        --brand-2: #0b4c6a;
        --card: #0f172a;
        --card-border: rgba(148, 163, 184, 0.2);
        --footer: #0b1220;
    }
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}
.site-header {
    background: #fff;
}
[data-theme="dark"] .site-header {
    background: #0b1220;
}
.navbar .nav-link, .navbar-brand { color: var(--text); }
.navbar .nav-link:hover { color: var(--brand-1); }
.navbar .navbar-toggler {
    border-color: rgba(0,0,0,.1);
}
[data-theme="dark"] .navbar .navbar-toggler { border-color: rgba(255,255,255,.2); }
.navbar .navbar-toggler-icon { filter: invert(0); }
[data-theme="dark"] .navbar .navbar-toggler-icon { filter: invert(1); }
* { transition: background-color .25s ease, color .25s ease, border-color .25s ease; }

.hero {
    background: linear-gradient(90deg, var(--brand-1) 60%, var(--bg) 100%);
}
.hero h1 {
    font-size: 2.8rem;
}
.hero p {
    font-size: 1.2rem;
}
.hero-img {
    display: inline-block;
    max-width: 100%;
    height: auto;
        width: auto;
        object-fit: cover; /* cubrir el contenedor sin distorsión */
    background: #0b1220; /* fallback para visualizar contenedor */
}

/* Contenedor del hero para controlar altura visible */
.hero-media { position: relative; }
.hero-media .hero-img { width: 100%; height: 100%; }

/* Alturas por breakpoint para que la imagen sea protagonista */
@media (min-width: 992px) { /* lg y superior */
    .hero-media { min-height: 420px; }
}
@media (min-width: 1200px) { /* xl */
    .hero-media { min-height: 520px; }
}
@media (max-width: 991.98px) { /* md y abajo */
    .hero-media { min-height: 320px; }
}

/* Utilidades reutilizables para imágenes en el sitio */
.img-cover { width: 100%; height: 100%; object-fit: cover; }
.ratio-16x9 { aspect-ratio: 16/9; }
.ratio-3x2 { aspect-ratio: 3/2; }
.ratio-4x3 { aspect-ratio: 4/3; }
.ratio-square { aspect-ratio: 1/1; }
.btn-warning {
    color: #222;
    font-weight: 600;
    border-radius: 8px;
    padding: 0.75rem 2rem;
}
.categorias { background: color-mix(in srgb, var(--bg) 92%, #ffffff); }
.categorias .card {
    transition: transform 0.2s, box-shadow 0.2s;
    background: var(--card);
    border: 1px solid var(--card-border);
    color: var(--text);
}
.categorias .card:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 8px 32px rgba(34,87,122,0.12);
}
.categorias .card-title {
    font-size: 1.3rem;
}
.site-footer { background: var(--footer); color: #fff; }

/* Newsletter */
.newsletter-section { background: linear-gradient(135deg, var(--brand-1) 0%, var(--brand-2) 60%); color: #fff; }
.newsletter-section .form-control { border: 2px solid rgba(255,255,255,.4); background: rgba(255,255,255,.08); color: #fff; }
.newsletter-section .form-control:focus { border-color: #ffc107; box-shadow: 0 0 0 .2rem rgba(255,193,7,.25); }

/* Share bar */
.share-bar .share-btn { line-height: 1; }
.letter-sp { letter-spacing: .08em; }

/* Floating buttons */
.scroll-top, .btn-whatsapp { position: fixed; z-index: 980; box-shadow: 0 6px 20px -4px rgba(0,0,0,.35); }
.scroll-top { bottom: 90px; right: 18px; opacity: 0; visibility: hidden; transition: .3s; }
.scroll-top.show { opacity: 1; visibility: visible; }
.btn-whatsapp { bottom: 20px; right: 16px; }
.btn-whatsapp i { font-size: 1.4rem; }

/* Footer links */
.footer-links a:hover { color: #fff !important; }


/* Imágenes responsivas con bordes redondeados consistentes */
img.rounded-4 { border-radius: 1rem !important; }

/* Ajustes responsivos adicionales */
@media (max-width: 767.98px) {
    .hero { background: linear-gradient(180deg, var(--brand-1) 45%, var(--bg) 100%); }
    .hero h1 { font-size: 2.2rem; }
    .hero-img { max-height: 300px; }
}