/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #f59e0b;
    --text-color: #1f2937;
    --light-bg: #f3f4f6;
}

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

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

/* Header Styles */
.header {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Course Hero Section */
.course-hero {
    display: flex;
    gap: 3rem;
    padding: 4rem 0;
    flex-wrap: wrap;
}

.course-hero-image {
    flex: 1;
    min-width: 300px;
}

.course-hero-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.course-hero-content {
    flex: 1;
    min-width: 300px;
}

.course-price {
    font-size: 2rem;
    color: var(--primary-color);
    margin: 1rem 0;
}

.original-price {
    font-size: 1.2rem;
    color: #6b7280;
    text-decoration: line-through;
}

.cta-button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: var(--secondary-color);
}

.course-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* Course Modules */
.course-content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.module-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.module-card:hover {
    transform: translateY(-5px);
}

/* Pricing Section */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.price-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    position: relative;
}

.price-card.recommended {
    border: 2px solid var(--accent-color);
}

.price-card .price {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin: 1rem 0;
}

.price-card ul {
    list-style: none;
    margin: 1.5rem 0;
}

.price-card li {
    padding: 0.5rem 0;
}

/* Footer */
.footer {
    background-color: var(--light-bg);
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .course-hero {
        flex-direction: column;
    }

    .nav-links {
        gap: 1rem;
    }
}