:root {
    --primary-blue: #0056b3;
    --secondary-blue: #004494;
    --accent-blue: #007bff;
    --light-blue: #e7f1ff;
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --gray-dark: #343a40;
    --text-color: #333;
    --transition-smooth: all 0.3s ease;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--gray-light);
}
::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: var(--transition-smooth);
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-blue) !important;
}

.nav-link {
    color: var(--gray-dark) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: var(--transition-smooth);
}

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

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 86, 179, 0.8), rgba(0, 86, 179, 0.8)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 90vh;
    display: flex;
    align-items: center;
    color: var(--white);
    text-align: center;
}

/* Section Headings */
.section-title {
    color: var(--primary-blue);
    font-weight: 700;
    margin-bottom: 20px;
}

/* Course Cards */
.card {
    border: none;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition-smooth);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.card-img-top {
    transition: var(--transition-smooth);
}

.card:hover .card-img-top {
    transform: scale(1.1);
}

/* Why Choose Us */
.feature-box {
    padding: 30px;
    background: var(--white);
    border-radius: 10px;
    margin-bottom: 20px;
    transition: var(--transition-smooth);
}

.feature-box:hover {
    background: var(--light-blue);
}

/* Contact Form */
.form-control:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 86, 179, 0.25);
}

/* Footer */
footer {
    background: var(--gray-dark);
    color: var(--white);
    padding: 50px 0 20px;
}

.footer-link {
    color: #bbb;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-link:hover {
    color: var(--white);
}

/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 100;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.whatsapp-float:hover {
    background-color: #128C7E;
    color: #FFF;
    transform: scale(1.1);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section {
        height: 70vh;
    }
}