:root {
    --blue: #3498db;
    --dark-blue: #2980b9;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
    --text-gray: #6c757d;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

body {
    background-color: var(--white);
    color: var(--dark-gray);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Simplified Navigation */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-weight: 700;
    font-size: 1.2rem;
}

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

.nav-links li {
    margin-left: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 600;
    padding: 5px 0;
    position: relative;
}

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

.nav-links a.active {
    color: var(--blue);
}

.nav-links a.active:after,
.nav-links a:hover:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--blue);
    bottom: 0;
    left: 0;
}

/* Page Header */
.page-header {
    background-color: var(--light-gray);
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

/* About Section */
.about-section {
    padding: 60px 0;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.about-text h2 span {
    color: var(--blue);
}

.about-image {
    flex: 1;
    text-align: center;
}

.about-image img {
    max-width: 100%;
    border-radius: 8px;
}

.btn {
    display: inline-block;
    background-color: var(--blue);
    color: white;
    padding: 10px 25px;
    border-radius: 30px;
    text-decoration: none;
    margin-top: 20px;
    font-weight: 600;
}

.btn:hover {
    background-color: var(--dark-blue);
}

/* Courses Section */
.courses-section {
    background-color: var(--light-gray);
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 1.8rem;
}

.section-title h2 span {
    color: var(--blue);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.course-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.course-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.course-info {
    padding: 20px;
}

.course-info h3 {
    margin-bottom: 10px;
}

/* Footer */
.footer {
    background-color: #2a2d34;
    color: white;
    padding: 50px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-col h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #b0b0b0;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #b0b0b0;
}

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

    .nav-links {
        margin-top: 20px;
    }

    .nav-links li {
        margin: 0 10px;
    }

    .about-content {
        flex-direction: column;
    }

    .about-image {
        margin-top: 30px;
    }
}