:root {
    --primary: #000033;      /* Azul Marino Profundo */
    --accent: #00FFFF;       /* Cian de Seguridad */
    --bg-light: #ECEFF1;     /* Gris Claro */
    --text-body: #333333;
    --font-heading: 'Roboto Condensed', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

body {
    font-family: var(--font-body);
    color: var(--text-body);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Navigation Dynamic Opacity Logic --- */
.main-nav {
    background-color: rgba(0, 0, 51, 0.1); /* Inicialmente transparente/baja opacidad */
    backdrop-filter: blur(2px);
    transition: all 0.4s ease-in-out;
    padding: 1.5rem 0;
}

.main-nav.scrolled {
    background-color: rgba(0, 0, 51, 0.95) !important; /* Completamente opaca */
    padding: 0.8rem 0;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.text-accent {
    color: var(--accent) !important;
}

/* --- Buttons & UI Components --- */
.btn {
    border-radius: 2px; /* Bordes casi rectos */
    font-weight: 600;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
}

.btn-accent {
    background-color: var(--accent);
    color: var(--primary);
    border: 1px solid var(--accent);
}

.btn-accent:hover {
    background-color: transparent;
    color: var(--accent);
}

.section-padding {
    padding: 5rem 0;
}

/* --- Hero Section --- */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    overflow: hidden;
}

.hero__bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(0,0,51,0.9) 0%, rgba(0,0,51,0.7) 100%);
    z-index: 1;
}

/* --- Cards --- */
.card {
    border: none;
    border-radius: 2px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); /* Sombra dura técnica */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    transform: translateY(-5px);
}

.card-img-wrapper {
    height: 200px;
    background-color: #ddd;
}

.card-img-top {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
}

/* --- MANDATORY IMAGE HOVER RULE --- */
img {
    transition: transform 0.3s ease;
}

img:hover {
    transform: scale(1.05);
    transition: transform 0.3s ease;
}

/* --- Testimonials --- */
.swiper-pagination-bullet-active {
    background-color: var(--accent) !important;
}

/* --- Forms --- */
.form-control {
    border-radius: 2px;
    padding: 0.8rem;
    border: 1px solid #ced4da;
}

.form-control:focus {
    box-shadow: none;
    border-color: var(--primary);
}