:root {
    --primary-color: #4e73df;
    --secondary-color: #2e59d9;
    --dark-color: #5a5c69;
    --light-color: #f8f9fc;
}

body {
    font-family: 'Nunito', sans-serif;
    color: #333;
    line-height: 1.6;
}

/* Navbar Styles */
.navbar {
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand img {
    transition: transform 0.3s;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: color 0.3s;
}

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

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

/* Hero Section */
.hero-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--light-color) 0%, #fff 100%);
}

.hero-section h1 {
    font-weight: 800;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.hero-section .lead {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #6c757d;
}

/* Features Section */
.features-section {
    background-color: #fff;
}

.feature-card {
    background-color: var(--light-color);
    border-radius: 10px;
    transition: transform 0.3s, box-shadow 0.3s;
    height: 100%;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
}

/* Course Cards */
.course-card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 2rem;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.course-img {
    height: 200px;
    object-fit: cover;
    width: 100%;
}

.course-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.course-location {
    color: #6c757d;
    margin-bottom: 0.5rem;
}

/* Filter Section */
.filter-section {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Register Form */
.register-section {
    background-color: var(--light-color);
}

/* Login Form */
.login-section {
    min-height: calc(100vh - 150px);
    display: flex;
    align-items: center;
}

/* Course Detail */
.course-detail-section img {
    border-radius: 10px 10px 0 0;
}

/* Membership Cards */
.membership-section .card {
    border-radius: 10px;
}

.membership-section .card-header {
    border-radius: 10px 10px 0 0 !important;
}

/* Footer */
footer {
    background-color: #2c3e50;
}

footer a {
    text-decoration: none;
    transition: color 0.3s;
}

footer a:hover {
    color: var(--primary-color) !important;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding: 3rem 0;
    }
    
    .hero-section img {
        margin-top: 2rem;
    }
    
    .feature-card {
        margin-bottom: 1.5rem;
    }
    
    .course-img {
        height: 150px;
    }
}