* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #1e5a96;
    --light-blue: #2d7ab8;
    --accent-yellow: #ffc107;
    --dark-text: #1a1a1a;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --border-gray: #e0e0e0;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-text);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background-color: var(--primary-blue);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-yellow);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-yellow);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    color: var(--white);
    padding: 120px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: rgba(255, 193, 7, 0.1);
    border-radius: 50%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-yellow);
    color: var(--dark-text);
    padding: 14px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3);
    border: 2px solid var(--accent-yellow);
}

.cta-button:hover {
    background-color: transparent;
    color: var(--accent-yellow);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.4);
}

/* Highlights Section */
.highlights {
    background-color: var(--light-bg);
    padding: 80px 20px;
}

.highlights h2,
.featured-courses h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 4rem;
    color: var(--primary-blue);
    position: relative;
}

.highlights h2::after,
.featured-courses h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--accent-yellow);
    border-radius: 2px;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.highlight-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border-top: 4px solid var(--primary-blue);
}

.highlight-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.highlight-card .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.highlight-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.highlight-card p {
    color: #666;
    line-height: 1.6;
}

/* Featured Courses Section */
.featured-courses {
    padding: 80px 20px;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.course-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: 1px solid var(--border-gray);
}

.course-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.course-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-card h3 {
    padding: 1.5rem 1.5rem 0.5rem;
    color: var(--primary-blue);
    font-size: 1.5rem;
}

.course-card p {
    padding: 0 1.5rem 1.5rem;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

.learn-more {
    display: inline-block;
    padding: 0 1.5rem 1.5rem;
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.learn-more:hover {
    color: var(--accent-yellow);
    transform: translateX(5px);
}

.text-center {
    text-align: center;
    margin-top: 2rem;
}

/* Footer */
.footer {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 60px 20px 20px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--accent-yellow);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-yellow);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .highlights h2,
    .featured-courses h2 {
        font-size: 2rem;
    }

    .cta-button {
        padding: 12px 30px;
        font-size: 1rem;
    }
}

@media (max-width: 600px) {
    .nav-links {
        gap: 0.5rem;
        font-size: 0.8rem;
    }

    .logo {
        font-size: 1.4rem;
        letter-spacing: 1px;
    }

    .hero {
        padding: 80px 20px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .highlights-grid {
        gap: 1.5rem;
    }

    .highlight-card {
        padding: 1.5rem;
    }

    .courses-grid {
        gap: 1.5rem;
    }
}