:root {
            --primary-color: #0056a6;
            --secondary-color: #28a745;
            --accent-color: #ffc107;
            --text-dark: #333;
            --text-light: #555;
            --background-light: #f8f9fa;
            --white: #ffffff;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: var(--white);
            box-shadow: var(--shadow);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            color: var(--text-dark) !important;
            font-weight: 500;
            padding: 0.5rem 1rem;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--secondary-color) !important;
            transform: translateY(-2px);
        }
        .hero {
            background: linear-gradient(rgba(0, 86, 166, 0.85), rgba(40, 167, 69, 0.8)), url('https://images.unsplash.com/photo-1586773860418-dc22f8b874bc?w=1920&h=1080&fit=crop') center/cover no-repeat;
            color: var(--white);
            padding: 8rem 0;
            text-align: center;
        }
        .hero h1 {
            color: var(--white);
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border: none;
            padding: 0.8rem 2rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #004085;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.2);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: var(--primary-color);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 1.8rem;
            transition: var(--transition);
        }
        .service-card:hover .icon-box {
            background: var(--secondary-color);
            transform: rotate(15deg) scale(1.1);
        }
        .doctor-card .card-img-top {
            height: 280px;
        }
        .news-card .card-body {
            padding: 1.5rem;
        }
        .contact-info {
            background: var(--background-light);
            border-radius: 12px;
            padding: 2rem;
            box-shadow: var(--shadow);
        }
        .contact-info i {
            color: var(--primary-color);
            margin-right: 10px;
        }
        footer {
            background: #2c3e50;
            color: var(--white);
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        footer a:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            background: rgba(255,255,255,0.1);
            border-radius: 6px;
            color: #ddd;
            transition: var(--transition);
        }
        .flink:hover {
            background: var(--primary-color);
            color: var(--white);
            transform: translateY(-3px);
            text-decoration: none;
        }
        friendlink {
            display: block;
            background: rgba(255,255,255,0.05);
            border-radius: 10px;
            padding: 2rem;
            margin-top: 2rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            z-index: 1000;
            opacity: 0;
            transition: var(--transition);
        }
        .back-to-top.show {
            opacity: 1;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .navbar-nav {
                text-align: center;
            }
        }