@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    /* Brand Colors */
    --azul-marino: #002a4d;
    --azul-marino-light: #003b6d;
    --azul-claro: #35a8ff;
    --azul-claro-hover: #1e92ec;
    
    /* Neutrals */
    --blanco: #ffffff;
    --gris-fondo: #f8fafc;
    --gris-claro: #f1f5f9;
    --gris-oscuro: #0f172a;      /* Deeper elegant dark */
    --gris-texto: #334155;
    
    /* Structural */
    --border-radius: 16px;       /* Slightly rounder for modern feel */
    --border-radius-btn: 10px;
    --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 30px -10px rgba(0, 59, 109, 0.12);
    --shadow-lg: 0 25px 50px -15px rgba(0, 59, 109, 0.25);
    --shadow-glow: 0 0 20px rgba(53, 168, 255, 0.4);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); /* Smoother premium easing */
}

/* CUSTOM SCROLLBAR */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--gris-fondo);
}
::-webkit-scrollbar-thumb {
    background: var(--azul-claro);
    border-radius: 10px;
    border: 2px solid var(--gris-fondo);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--azul-marino);
}

/* BASE */
html { 
    scroll-behavior: smooth; 
    overflow-x: hidden; 
}

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

body { 
    font-family: 'Inter', sans-serif;
    color: var(--gris-texto); 
    line-height: 1.8; 
    background-color: var(--blanco); 
    font-size: 18px; 
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6, .logo-text {
    font-family: 'Montserrat', sans-serif;
    color: var(--azul-marino);
    line-height: 1.25;
}

a {
    text-decoration: none;
    transition: var(--transition);
}

/* HEADER COMPONENT (Premium Glassmorphism) */
.site-header {
    background-color: #ffffff; 
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    position: fixed; 
    width: 100%; 
    top: 0; 
    z-index: 1000; 
    transition: var(--transition);
}

.header-container {
    padding: 12px 5%; 
    max-width: 1400px;
    margin: 0 auto;
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}

.logo-img { 
    height: 70px; 
    width: auto; 
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo-img:hover {
    transform: scale(1.05) rotate(-1deg);
}

.nav-derecha { 
    display: flex; 
    align-items: center; 
    gap: 32px; 
}

nav ul { 
    list-style: none; 
    display: flex; 
    gap: 32px; 
}

nav ul li a { 
    color: var(--azul-marino); 
    font-weight: 600; 
    font-size: 15px; 
    position: relative; 
    padding: 8px 0;
}

nav ul li a::after { 
    content: ''; 
    position: absolute; 
    width: 0; 
    height: 3px; 
    display: block; 
    bottom: -2px; 
    right: 0; 
    background: linear-gradient(90deg, var(--azul-claro), var(--azul-marino)); 
    transition: width 0.4s ease, right 0.4s ease; 
    border-radius: 4px;
}

nav ul li a:hover::after, nav ul li a.active::after { 
    width: 100%; 
    left: 0; 
}

nav ul li a:hover, nav ul li a.active { 
    color: var(--azul-claro); 
}

/* BUTTONS WITH GLOW */
.btn-contacto-menu { 
    background-color: var(--azul-marino); 
    color: var(--blanco); 
    padding: 12px 26px; 
    border-radius: var(--border-radius-btn); 
    font-weight: 600; 
    font-size: 14px; 
    box-shadow: 0 4px 6px -1px rgba(0, 42, 77, 0.2);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-contacto-menu::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s;
    z-index: -1;
}

.btn-contacto-menu:hover::before {
    left: 100%;
}

.btn-contacto-menu:hover { 
    background-color: var(--azul-marino-light); 
    transform: translateY(-3px); 
    box-shadow: 0 10px 20px -3px rgba(0, 42, 77, 0.4); 
    color: var(--blanco);
}

.btn-idioma { 
    background: transparent; 
    border: 2px solid var(--azul-claro); 
    color: var(--azul-claro); 
    padding: 10px 18px; 
    border-radius: var(--border-radius-btn); 
    cursor: pointer; 
    font-weight: 700; 
    font-size: 13px; 
    transition: var(--transition); 
}

.btn-idioma:hover { 
    background-color: var(--azul-claro); 
    color: var(--blanco); 
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-glow);
}

.btn-primario { 
    background: linear-gradient(135deg, var(--azul-claro) 0%, var(--azul-marino-light) 100%); 
    color: var(--blanco); 
    padding: 18px 40px; 
    font-weight: 700; 
    font-family: 'Montserrat', sans-serif;
    font-size: 16px; 
    border-radius: var(--border-radius-btn); 
    display: inline-block; 
    transition: var(--transition); 
    box-shadow: 0 6px 20px rgba(53, 168, 255, 0.3); 
    position: relative;
    z-index: 1;
}

.btn-primario::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, var(--azul-marino-light) 0%, var(--azul-claro) 100%); 
    border-radius: var(--border-radius-btn); 
    opacity: 0;
    z-index: -1;
    transition: opacity 0.4s;
}

.btn-primario:hover::after {
    opacity: 1;
}

.btn-primario:hover { 
    transform: translateY(-5px) scale(1.02); 
    box-shadow: var(--shadow-glow); 
    color: var(--blanco);
}

/* HERO SECTION WITH PARALLAX SETUP */
.hero { 
    min-height: 100vh; 
    background: linear-gradient(135deg, rgba(0, 42, 77, 0.95) 0%, rgba(0, 59, 109, 0.6) 100%), 
                url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80') center/cover; 
    background-attachment: fixed; /* Native Parallax fallback */
    display: flex; 
    align-items: center; 
    padding: 0 10%; 
    overflow: hidden;
}

.hero-content { 
    max-width: 900px; 
    color: var(--blanco); 
    /* Initial state before scroll parallax kicks in */
    will-change: transform, opacity;
}

.hero-content h1 { 
    font-size: clamp(48px, 6vw, 76px); 
    margin-bottom: 24px; 
    color: var(--blanco);
    text-shadow: 0 10px 30px rgba(0,0,0,0.4); 
    letter-spacing: -2px; 
    /* Text Gradient Chrome Effect */
    background: linear-gradient(to right, #ffffff, #d1e8ff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p { 
    font-size: clamp(20px, 2.5vw, 24px); 
    margin-bottom: 40px; 
    color: #e0f0ff; 
    font-weight: 500; 
    max-width: 800px;
    text-shadow: 0 2px 15px rgba(0,0,0,0.3);
}

/* TYPOGRAPHY OVERRIDES */
.page-header { 
    background: linear-gradient(135deg, var(--azul-marino) 0%, var(--azul-marino-light) 100%); 
    color: var(--blanco); 
    padding: 200px 10% 120px 10%; 
    text-align: center; 
    position: relative;
    overflow: hidden;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -50px; left: -5%;
    width: 110%; height: 100px;
    background: var(--blanco);
    transform: rotate(-2deg);
}

.page-header h1 { 
    font-size: clamp(40px, 5vw, 60px); 
    color: var(--blanco);
    margin-bottom: 16px; 
    letter-spacing: -1.5px;
}

/* SECTION LAYOUT SYSTEM */
/* Outer section stretches full width (for bg colors) */
.section-padded {
    padding: 100px 0;
}

/* Inner div constrains content width */
.section-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 60px;
}

section { 
    padding: 120px 10%; 
}

h2 { 
    text-align: center; 
    font-size: clamp(38px, 4vw, 50px); 
    margin-bottom: 60px; 
    position: relative; 
    letter-spacing: -1px; 
    color: var(--gris-oscuro);
}

h2::after { 
    content: ''; 
    width: 80px; 
    height: 6px; 
    background: linear-gradient(90deg, var(--azul-claro), var(--azul-marino)); 
    display: block; 
    margin: 24px auto 0 auto; 
    border-radius: 6px; 
}

.text-left h2 {
    text-align: left;
}
.text-left h2::after {
    margin: 24px 0 0 0;
}

h3 { 
    font-size: 26px; 
    margin-bottom: 16px; 
    letter-spacing: -0.5px;
    color: var(--azul-marino);
}

/* GRID & CARDS */
.grid-2 { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 80px; 
    align-items: center; 
}

.grid-3 { 
    display: grid; 
    grid-template-columns: repeat(3, minmax(0, 1fr)); 
    gap: 28px; 
}

.card { 
    background-color: var(--blanco); 
    padding: 42px 32px; 
    border-radius: var(--border-radius); 
    box-shadow: var(--shadow-sm); 
    border-top: 4px solid transparent;
    transition: var(--transition); 
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: visible;
    min-width: 0; /* Allows grid item to shrink below content size */
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--azul-claro), var(--azul-marino));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover { 
    transform: translateY(-15px); 
    box-shadow: var(--shadow-lg); 
}

.highlight-box { 
    background: linear-gradient(145deg, var(--blanco), var(--gris-claro));
    padding: 50px; 
    border-left: 6px solid var(--azul-claro); 
    border-radius: var(--border-radius); 
    box-shadow: var(--shadow-md); 
    border-top: 1px solid var(--blanco);
    border-right: 1px solid var(--blanco);
    border-bottom: 1px solid var(--blanco);
}

/* SPECIFIC SECTIONS */
.bg-gris { background-color: var(--gris-fondo); }
.bg-marino { 
    background: linear-gradient(135deg, var(--azul-marino) 0%, #00162a 100%); 
    color: var(--blanco); 
}

.bg-marino h2, .bg-marino h3, .bg-marino p { color: var(--blanco); }
.bg-marino h2::after { background: var(--azul-claro); }

.bg-marino .card { 
    background-color: rgba(255,255,255,0.03); 
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.bg-marino .card:hover {
    background-color: rgba(255,255,255,0.06); 
    border-color: rgba(255,255,255,0.2);
}

.image-rounded {
    width: 100%; 
    border-radius: var(--border-radius); 
    box-shadow: var(--shadow-lg); 
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.image-rounded:hover {
    transform: scale(1.03) rotate(1deg);
}

/* LISTS (ROI) */
.roi-list { 
    list-style: none; 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 30px; 
    margin-top: 40px;
}

.roi-list li { 
    background: var(--blanco); 
    padding: 30px; 
    border-radius: var(--border-radius); 
    font-weight: 500; 
    display: flex; 
    align-items: center; 
    gap: 24px; 
    box-shadow: var(--shadow-sm); 
    transition: var(--transition); 
    border: 1px solid rgba(0,0,0,0.03);
}

.roi-list li:hover { 
    transform: translateX(15px) scale(1.02); 
    border-left: 5px solid var(--azul-claro); 
    box-shadow: var(--shadow-md);
}

.roi-list li::before { 
    content: '✔'; 
    color: var(--blanco); 
    font-size: 20px; 
    background: linear-gradient(135deg, var(--azul-claro) 0%, var(--azul-marino) 100%); 
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    border-radius: 50%; 
    box-shadow: var(--shadow-glow);
}

/* FOOTER COMPONENT */
.site-footer { 
    background-color: #001221;
    color: rgba(255,255,255,0.6); 
    text-align: center; 
    padding: 80px 5% 40px 5%; 
}

.footer-content p {
    color: rgba(255,255,255,0.7); 
}

.firma-agencia { 
    margin-top: 40px; 
    font-size: 14px; 
    border-top: 1px solid rgba(255,255,255,0.05); 
    padding-top: 30px; 
}

.firma-agencia strong { 
    color: var(--azul-claro); 
}

/* INTERSECTION OBSERVER ANIMATIONS */
/* Inicia invisible y desplazado */
.reveal { 
    opacity: 0; 
    transform: translateY(60px) scale(0.98); 
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1); 
    will-change: opacity, transform;
}

/* Al ser intersectado */
.reveal.active { 
    opacity: 1; 
    transform: translateY(0) scale(1); 
}

@keyframes fadeUp { 
    from { opacity: 0; transform: translateY(60px) scale(0.98); } 
    to { opacity: 1; transform: translateY(0) scale(1); } 
}

/* RESPONSIVE */
@media (max-width: 1100px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .page-header h1 { font-size: 40px; }
}

@media (max-width: 768px) {
    .header-container { flex-direction: column; gap: 20px; padding: 20px; }
    .nav-derecha { flex-wrap: wrap; justify-content: center; }
    .hero { text-align: center; min-height: 80vh; margin-top: 150px; }
    .hero-content { margin: 0 auto; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 32px; }
    .roi-list { grid-template-columns: 1fr; }
    .text-left h2 { text-align: center; }
    .text-left h2::after { margin: 24px auto 0 auto; }
    .page-header::after { display: none; }
    .section-inner { padding: 0 24px; }
    .section-padded { padding: 70px 0; }
}