/* ===== TEMA OSCURO PREMIUM ===== */
.theme-oscuro {
    --primary: #111827;      /* Fondo principal */
    --secondary: #1F2937;    /* Fondo secundario */
    --accent: #F59E0B;       /* Detalles */
    --background: #1F2937;
    --surface: #111827;
    --text: #F9FAFB;
    --text-muted: #9CA3AF;
    --border: #374151;
    --radius: 20px;
    --shadow: 0 20px 40px rgba(0,0,0,0.4);
    --transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
    --font-title: 'Roboto Slab', serif;
    --font-body: 'Poppins', sans-serif;
}

/* BASE */
.layout-oscuro * { box-sizing:border-box; margin:0; padding:0; }
.layout-oscuro { font-family: var(--font-body); background: var(--background); color: var(--text); line-height:1.6; }

/* NAVBAR con glassmorphism */
.layout-oscuro nav {
    background: rgba(17,24,39,0.85);
    backdrop-filter: blur(10px);
    padding:1rem 2rem;
    position:sticky;
    top:0;
    z-index:1000;
    box-shadow: var(--shadow);
    border-bottom:3px solid var(--accent);
}
.nav-container { max-width:1200px; margin:0 auto; display:flex; justify-content:space-between; align-items:center; }
.nav-brand { font-family:var(--font-title); font-size:1.8rem; font-weight:900; color:white; display:flex; align-items:center; gap:0.5rem; }
.nav-links { display:flex; gap:1.5rem; align-items:center; }
.nav-link-oscuro { color:white; padding:0.5rem 1rem; border-radius:var(--radius); font-weight:700; transition:var(--transition); text-decoration:none; }
.nav-link-oscuro:hover { background: rgba(255,255,255,0.1); transform: translateY(-3px); }
.btn-nav-oscuro {
    background: var(--accent);
    color: #111827;
    padding:1rem 2rem;
    border-radius:40px;
    font-weight:800;
    text-shadow: 0 0 5px #F59E0B, 0 0 10px #F59E0B;
    box-shadow: 0 0 10px #F59E0B, 0 0 20px rgba(245,158,11,0.4);
    transition: var(--transition);
}
.btn-nav-oscuro:hover {
    transform: scale(1.08);
    box-shadow: 0 0 20px #F59E0B, 0 0 40px rgba(245,158,11,0.6);
}

/* BANNER */
.banner-oscuro {
    background: linear-gradient(90deg,var(--primary),var(--secondary));
    color:white;
    font-family: var(--font-title);
    font-size:1.25rem;
    font-weight:900;
    padding:1rem;
    text-align:center;
    text-transform:uppercase;
    letter-spacing:1px;
}

/* HERO con fondo animado */
.hero-section.layout-oscuro {
    display:flex; flex-wrap:wrap; justify-content:center; align-items:center;
    min-height:80vh; max-width:1200px; margin:0 auto; padding:4rem 2rem;
    position:relative;
}
.hero-section.layout-oscuro::after {
    content:""; position:absolute; top:0; left:0; right:0; bottom:0;
    background: linear-gradient(270deg, rgba(31,41,55,0.8), rgba(17,24,39,0.8));
    background-size: 400% 400%;
    animation: gradientOscuro 15s ease infinite;
    opacity:1; z-index:0; border-radius:var(--radius);
}
@keyframes gradientOscuro {
    0%{background-position:0% 50%;}
    50%{background-position:100% 50%;}
    100%{background-position:0% 50%;}
}
.hero-content-oscuro { position:relative; z-index:1; display:flex; flex-direction:column; justify-content:center; gap:1.5rem; max-width:700px; text-align:center; }
.title-oscuro { font-family: var(--font-title); font-size:3.5rem; font-weight:900; color:var(--accent); line-height:1.1; }
.subtitle-oscuro { font-size:1.25rem; color:var(--text-muted); line-height:1.7; }
.btn-hero-oscuro {
    background: var(--accent);
    color: #111827;
    padding:1rem 2.5rem;
    font-weight:800;
    border-radius:50px;
    font-size:1.25rem;
    transition:var(--transition);
    text-decoration:none;
    display:inline-block;
    text-shadow: 0 0 5px #F59E0B, 0 0 10px #F59E0B;
    box-shadow: 0 0 10px #F59E0B, 0 0 20px rgba(245,158,11,0.4);
}
.btn-hero-oscuro:hover {
    transform: scale(1.08);
    box-shadow:0 0 20px #F59E0B, 0 0 40px rgba(245,158,11,0.6);
}

/* About */
.about-section.layout-oscuro { padding:6rem 2rem; background: var(--background); }
.about-container-oscuro { max-width:1000px; margin:0 auto; text-align:center; }
.section-title.title-oscuro { font-family:var(--font-title); font-size:3rem; font-weight:900; color:var(--accent); margin-bottom:2rem; }
.about-text.text-oscuro { font-size:1.125rem; color:var(--text-muted); line-height:1.8; }

/* Services */
.services-section.layout-oscuro { padding:6rem 2rem; background: var(--surface); }
.services-container-oscuro { max-width:1200px; margin:0 auto; }
.grid-oscuro { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:2rem; }
.card-oscuro {
    background: linear-gradient(145deg, #111827, #1F2937);
    border-radius: var(--radius);
    padding:2.5rem;
    box-shadow:0 15px 35px rgba(0,0,0,0.6);
    border:1px solid var(--border);
    text-align:center;
    transition: var(--transition);
}
.card-oscuro:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow:0 35px 60px rgba(0,0,0,0.7);
}
.card-icon.icon-oscuro {
    width:80px; height:80px; border-radius:50%; display:flex; align-items:center; justify-content:center;
    margin:0 auto 1.5rem; font-size:2rem;
    background: linear-gradient(135deg,var(--primary),var(--secondary));
    color:white;
}
.card-title.title-oscuro { font-size:1.5rem; font-weight:900; color:var(--accent); margin-bottom:1rem; }
.card-text.text-oscuro { color:var(--text-muted); line-height:1.6; }

/* Smoothies con 3D */
.smoothies-section.layout-oscuro { padding:6rem 2rem; background: var(--background); text-align:center; perspective:1000px; }
.carousel-oscuro { max-width:800px; margin:0 auto; border-radius:var(--radius); overflow:visible; position:relative; }
.inner-oscuro {
    display:flex; transition:transform 0.7s ease;
    transform-style: preserve-3d;
}
.img-oscuro {
    width:250px; height:350px; object-fit:cover; border-radius:var(--radius);
    margin:0 -50px;
    transition:transform 0.5s ease, box-shadow 0.5s ease;
    box-shadow:0 15px 35px rgba(0,0,0,0.5);
}
.img-oscuro:hover {
    transform: translateY(-10px) scale(1.05) rotateY(5deg);
    z-index:10;
}

/* Footer */
.footer-section.layout-oscuro {
    background: rgba(31,41,55,0.9);
    backdrop-filter: blur(5px);
    border-top:3px solid var(--accent);
    color:white; padding:4rem 2rem 2rem;
}
.footer-container-oscuro { max-width:1200px; margin:0 auto; }
.footer-grid.grid-oscuro { display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:3rem; }
.brand-title.title-oscuro, .contact-title.title-oscuro, .social-title.title-oscuro { font-family:var(--font-title); font-weight:900; color:var(--accent); margin-bottom:1rem; }
.brand-text.text-oscuro, .info-oscuro, .link-oscuro { color:white; }

/* Responsive */
@media(max-width:768px){
    .hero-section.layout-oscuro { flex-direction:column; text-align:center; gap:2rem; }
    .title-oscuro { font-size:2.5rem; }
    .section-title.title-oscuro { font-size:2rem; }
    .nav-container { flex-direction:column; gap:1rem; }
    .nav-links { flex-wrap:wrap; justify-content:center; }
    .img-oscuro { margin:0 -20px; width:200px; height:280px; }
}