/* --- Paleta de Colores y Variables de Diseño --- */
        :root {
            --primary-teal: #0b666b;
            --secondary-teal: #158a96;
            --accent-teal: #29adb4;
            --accent-purple: #7e4892;
            
            --dark-text: #2c3e50;
            --light-text: #7f8c8d;
            --white: #FFFFFF;
            --light-bg: #f8f9fa;
            --border-color: #e9ecef;

            --header-bg: var(--white);
            --footer-bg: var(--primary-teal);
            
            --font-primary: 'Montserrat', sans-serif;
            --font-secondary: 'Open Sans', sans-serif;
            
            --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
            --border-radius: 12px;
        }

        /* --- Reset y Estilos Generales --- */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body { font-family: var(--font-secondary); line-height: 1.7; color: var(--dark-text); background-color: var(--white); overflow-x: hidden; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* --- Encabezado y Navegación --- */
        .main-header { background-color: var(--header-bg); padding: 15px 0; box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 1000; }
        .header-content { display: flex; justify-content: space-between; align-items: center; }
        .logo-container { display: flex; align-items: center; gap: 15px; text-decoration: none; }
        .logo-img { height: 55px; }
        .site-title { font-family: var(--font-primary); font-weight: 800; font-size: 1.5em; color: var(--primary-teal); line-height: 1.1; }

        /* --- Estilos del Subtítulo --- */
        .title-container {
            display: flex;
            flex-direction: column;
        }
        .site-subtitle {
            font-family: var(--font-primary);
            font-size: 0.7em;
            font-weight: 600;
            color: var(--secondary-teal);
            margin-top: -2px;
        }
        
        .mobile-nav-toggle { display: none; font-size: 1.8rem; color: var(--primary-teal); background: transparent; border: none; cursor: pointer; }
        .main-nav ul { list-style: none; display: flex; align-items: center; gap: 5px; }
        .main-nav a { color: var(--dark-text); text-decoration: none; font-family: var(--font-primary); font-weight: 700; font-size: 0.95em; padding: 10px 15px; border-radius: 8px; transition: color 0.3s ease; position: relative; }
        .main-nav a:hover { color: var(--primary-teal); }
        .btn-portal { background-color: var(--accent-purple); color: var(--white) !important; box-shadow: 0 4px 15px rgba(126, 72, 146, 0.3); }
        .btn-portal:hover { color: var(--white) !important; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(126, 72, 146, 0.4); }

        /* --- Estilos de Sección --- */
        section { padding: clamp(60px, 8vw, 100px) 0; }
        section:nth-of-type(odd) { background-color: var(--light-bg); }
        section h2 { font-family: var(--font-primary); font-weight: 800; font-size: clamp(2.2rem, 5vw, 2.8rem); color: var(--primary-teal); text-align: center; margin-bottom: 20px; }
        .section-subtitle { text-align: center; font-size: clamp(1rem, 2.5vw, 1.2rem); color: var(--light-text); max-width: 700px; margin: 0 auto 60px; }

        /* --- Hero Section & Buttons --- */
        .hero-section { background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../img/wellnessBack.jpg') no-repeat center center/cover; color: var(--white); text-align: center; padding: clamp(100px, 15vh, 180px) 20px; display: flex; align-items: center; justify-content: center; }
        .hero-content h1 { font-size: clamp(2.5rem, 7vw, 4rem); font-weight: 800; margin-bottom: 25px; line-height: 1.2; text-shadow: 0 2px 5px rgba(0,0,0,0.2); }
        .hero-content p { font-size: clamp(1.1rem, 3vw, 1.4rem); margin-bottom: 40px; font-weight: 400; max-width: 700px; margin-left: auto; margin-right: auto; }
        .btn-primary { display: inline-block; padding: 15px 35px; border-radius: 50px; text-decoration: none; font-family: var(--font-primary); font-weight: 700; font-size: 1.1em; transition: transform 0.3s ease, box-shadow 0.3s ease; border: none; cursor: pointer; background-color: var(--accent-teal); color: var(--white); box-shadow: 0 4px 15px rgba(41, 173, 180, 0.4); }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(41, 173, 180, 0.5); }
        
        .btn-ghost {
            display: inline-block;
            padding: 6px 15px;
            border-radius: 50px;
            text-decoration: none;
            font-family: var(--font-primary);
            font-weight: 700;
            font-size: 0.9em;
            border: 2px solid var(--accent-teal);
            background-color: transparent;
            color: var(--accent-teal);
            transition: background-color 0.3s ease, color 0.3s ease;
        }
        .btn-ghost:hover {
            background-color: var(--accent-teal);
            color: var(--white);
        }
        
        /* --- Estilos de Tarjetas (Cards) --- */
        .grid-container { display: grid; grid-template-columns: 1fr; gap: 30px; }
        .card { background-color: var(--white); padding: 35px; border-radius: var(--border-radius); box-shadow: var(--shadow-sm); transition: transform 0.3s ease, box-shadow 0.3s ease; border: 1px solid var(--border-color); display: flex; flex-direction: column; }
        .card:hover { transform: translateY(-10px); box-shadow: var(--shadow-md); }
        .card .icon { font-size: 3.5em; margin-bottom: 20px; color: var(--accent-teal); }
        .card h3 { font-family: var(--font-primary); font-weight: 700; color: var(--primary-teal); margin-bottom: 15px; font-size: 1.5em; }
        .card p, .card ul { font-size: 1em; color: var(--light-text); }
        .card ul { list-style: none; padding: 0; margin-top: 15px; flex-grow: 1; }
        .card ul li { margin-bottom: 10px; padding-left: 20px; position: relative; }
        .card ul li::before { content: '\f058'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--accent-purple); position: absolute; left: 0; }
        #acerca .card, #contacto .card, .full-width-card, .holiday-card { text-align: center; }
        
        .service-hours {
            font-size: 0.9em;
            font-weight: 600;
            color: var(--primary-teal);
            margin-top: 20px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        .plans-container { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 25px 35px; margin-top: 25px; }
        .plans-container img { max-height: 55px; max-width: 150px; object-fit: contain; }
        .contact-card a { color: var(--accent-teal); text-decoration: none; font-weight: 600; }

        .main-footer { background-color: var(--footer-bg); color: rgba(255, 255, 255, 0.8); padding: 50px 0; text-align: center; }
        .footer-logo { height: 60px; margin-bottom: 20px; opacity: 0.9; }

        .fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
        .fade-in.is-visible { opacity: 1; transform: translateY(0); }

        /* --- DISEÑO RESPONSIVO Y ADAPTABLE --- */
        @media (min-width: 768px) {
            .grid-container.about-grid,
            .grid-container.contact-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
            .grid-container.services-grid { grid-template-columns: repeat(2, 1fr); }
            .services-grid .full-width-card { grid-column: 1 / -1; }
        }
        
        @media (min-width: 992px) { 
            .mobile-nav-toggle { display: none; } 
        }

        @media (max-width: 991px) {
            .mobile-nav-toggle { 
                display: block; 
            }
            .main-nav { 
                position: absolute; 
                top: 85px; 
                right: 0; 
                left: 0; 
                background: var(--white); 
                box-shadow: var(--shadow-sm); 
                visibility: hidden;
                opacity: 0;
                transform: translateY(-20px);
                transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out, visibility 0.3s; 
            }
            .main-nav.nav-active { 
                visibility: visible;
                opacity: 1;
                transform: translateY(0);
            }
            .main-nav ul { 
                flex-direction: column; 
                align-items: center; 
                gap: 0; 
                width: 100%; 
            }
            .main-nav li { 
                width: 100%; 
                text-align: center; 
            }
            .main-nav a { 
                display: block; 
                padding: 20px; 
                width: 100%; 
                border-radius: 0; 
                border-bottom: 1px solid var(--border-color); 
            }
            .main-nav li:last-child a {
                border-bottom: none;
            }
        }