:root {
            --primary: #0056b3;
            --secondary: #28a745;
            --dark: #2c3e50;
            --light: #f8f9fa;
            --text: #444;
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        html { scroll-behavior: smooth; }

        body { color: var(--text); line-height: 1.6; background: #fff; }

        /* --- Header & Nav --- */
        header {
            background: #fff;
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo { font-size: 1.5rem; font-weight: 700; color: var(--primary); text-decoration: none; }

        nav ul { display: flex; list-style: none; gap: 20px; }
        nav ul li a { text-decoration: none; color: var(--dark); font-weight: 500; font-size: 0.9rem; transition: var(--transition); }
        nav ul li a:hover { color: var(--primary); }

        .btn-cta { background: var(--primary); color: #fff; padding: 10px 20px; border-radius: 5px; text-decoration: none; font-weight: 600; transition: var(--transition); }
        .btn-cta:hover { background: #004494; transform: translateY(-2px); }

        /* --- Hero Section --- */
        .hero {
            background: linear-gradient(rgba(255,255,255,0.8), rgba(255,255,255,0.8)), url('../img/hero.webp');
            background-size: cover;
            padding: 100px 5%;
            text-align: center;
        }

        .hero h1 { font-size: 3rem; color: var(--dark); margin-bottom: 20px; }
        .hero p { max-width: 800px; margin: 0 auto 30px; font-size: 1.1rem; }
        
        .hero-highlights { display: flex; justify-content: center; gap: 30px; margin-bottom: 40px; flex-wrap: wrap; }
        .hero-highlights span { font-weight: 600; color: var(--primary); }

        .hero-btns { display: flex; justify-content: center; gap: 20px; }
        .btn-secondary { background: var(--secondary); color: white; padding: 12px 25px; border-radius: 5px; text-decoration: none; font-weight: 600; }

        /* --- Common Section Styles --- */
        section { padding: 80px 5%; }
        h2 { text-align: center; font-size: 2.2rem; margin-bottom: 40px; color: var(--dark); }

        /* --- Services Grid --- */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 25px;
        }
        .service-card {
            padding: 30px;
            background: var(--light);
            border-radius: 10px;
            transition: var(--transition);
            text-align: center;
        }
        .service-card:hover { transform: translateY(-10px); background: #fff; box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
        .service-card i { font-size: 2.5rem; color: var(--primary); margin-bottom: 15px; }

        /* --- Insurance Section --- */
        .insurance { background: var(--light); }
        .insurance-content { display: flex; gap: 50px; align-items: center; flex-wrap: wrap; text-align: center; }
        .insurance-text { flex: 1; min-width: 300px;  }
        .insurance-list { list-style: none; margin: 20px 0; }
        .insurance-list li { margin-bottom: 10px; }
        .insurance-list li i { color: var(--secondary); margin-right: 10px; }

        /* --- Appointment Form --- */
        .appointment-form {
            max-width: 700px;
            margin: 0 auto;
            background: #fff;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 0 30px rgba(0,0,0,0.1);
        }
        .form-group { margin-bottom: 20px; }
        .form-group label { display: block; margin-bottom: 5px; font-weight: 600; }
        .form-group input, .form-group select, .form-group textarea {
            width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 5px;
        }
        .submit-btn { background: var(--primary); color: white; border: none; padding: 15px 30px; width: 100%; border-radius: 5px; cursor: pointer; font-size: 1rem; font-weight: 600; }

        /* --- Popups (Modals) --- */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0; top: 0; width: 100%; height: 100%;
            background: rgba(0,0,0,0.6);
        }
        .modal-content {
            background: #fff;
            margin: 10% auto;
            padding: 30px;
            width: 90%;
            max-width: 900px;
            border-radius: 10px;
            position: relative;
        }
        .close-modal { position: absolute; right: 20px; top: 15px; font-size: 1.5rem; cursor: pointer; }

        /* --- Footer --- */
        footer { background: var(--dark); color: white; padding: 60px 5% 20px; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; }
        .footer-bottom { text-align: center; border-top: 1px solid #444; padding-top: 20px; font-size: 0.8rem; }
        .social-links a { color: white; margin-right: 15px; font-size: 1.2rem; }

        /* --- Responsive --- */
        @media (max-width: 768px) {
            nav { display: none; } /* Mobile menu simplified for demo */
            .hero h1 { font-size: 2rem; }
        }