:root {
            --primary-blue: #0a2540;
            --primary-teal: #005f73;
            --primary-red: #bb2d3b;
            --gold-accent: #c69214;
            --gold-light: #e6c667;
            --bg-light: #f8f9fa;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #333;
            background-color: #ffffff;
        }

        /* --- Top Bar de Contactos --- */
        .top-bar {
            background-color: var(--primary-blue);
            color: #ffffff;
            font-size: 0.825rem;
        }

        /* --- Header con Logo Principal --- */
        .top-header {
            background-color: #ffffff;
        }

        /* --- Navbar Flotante / Navegación --- */
        .navbar-floating {
            background-color: #ffffff;
        }

        .nav-link {
            color: var(--primary-blue) !important;
            font-weight: 600;
            font-size: 0.875rem;
            text-transform: uppercase;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary-teal) !important;
        }

        /* --- Barra de Anuncio Alert --- */
        .announcement-bar {
            background-color: #d1ecf1;
            color: #0c5460;
            font-size: 0.85rem;
            border-bottom: 1px solid #bee5eb;
        }

        /* --- Hero Section IUNAV --- */
        .hero-section {
            position: relative;
            background-color: #ffffff;
            overflow: hidden;
            padding-top: 2rem;
            padding-bottom: 4rem;
            border-bottom: 4px solid var(--gold-accent);
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1.1;
            letter-spacing: -1px;
        }

        /* Formas Circulares de Imágenes */
        .circle-img-container {
            position: relative;
            width: 100%;
            padding-bottom: 100%;
            border-radius: 50%;
            overflow: hidden;
            border: 4px solid #ffffff;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }

        .circle-img-container img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Escudo Dorado Flotante */
        .floating-shield {
            position: absolute;
            bottom: -20px;
            right: 15%;
            z-index: 10;
            width: 140px;
        }

        /* --- Sección Cursos / Programas Hexagonales --- */
        .courses-section {
            background-color: #f4f6f8;
            padding: 4rem 0;
        }

        .section-title {
            color: var(--primary-blue);
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--primary-teal);
        }

        /* Tarjeta Estilo Hexagonal / Biselada */
        .hex-card {
            background-color: #ffffff;
            border: 1px solid #e0e0e0;
            padding: 2.5rem 1.5rem;
            text-align: center;
            clip-path: polygon(10% 0%, 90% 0%, 100% 50%, 90% 100%, 10% 100%, 0% 50%);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            min-height: 200px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .hex-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
            border-color: var(--gold-accent);
        }

        .hex-icon {
            font-size: 2rem;
            color: var(--primary-blue);
            margin-bottom: 0.5rem;
        }

        .hex-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 0.25rem;
            text-transform: uppercase;
        }

        .hex-subtitle {
            font-size: 0.8rem;
            color: #6c757d;
            margin-bottom: 0.5rem;
        }

        .hex-link {
            font-size: 0.85rem;
            color: var(--primary-teal);
            font-weight: 700;
            text-decoration: none;
        }   

        .btn-catalog {
            background-color: var(--primary-teal);
            color: white;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 0.8rem 2.5rem;
            border: none;
            clip-path: polygon(5% 0%, 95% 0%, 100% 50%, 95% 100%, 5% 100%, 0% 50%);
            text-decoration: none;
            display: inline-block;
        }

        .btn-catalog:hover {
            background-color: var(--primary-blue);
            color: white;
        }

        /* --- Footer --- */
        footer {
            background-color: #ffffff;
            border-top: 1px solid #e0e0e0;
            font-size: 0.85rem;
            color: #555;
        }

        footer a {
            color: #555;
            text-decoration: none;
        }

        footer a:hover {
            color: var(--primary-teal);
        }