:root {
    --primary-color: #7c3aed;
    --primary-dark: #5b21b6;
    --secondary-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --white: #ffffff;
}

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

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

/* Navbar */
.navbar-public {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-public .navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white !important;
}

.navbar-public .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: all 0.3s;
}

.navbar-public .nav-link:hover,
.navbar-public .nav-link.active {
    color: white !important;
    transform: translateY(-2px);
}

.btn-login {
    background: white;
    color: var(--primary-color);
    border: 2px solid white;
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s;
}

.btn-login:hover {
    background: transparent;
    color: white;
    border-color: white;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.9), rgba(91, 33, 182, 0.9)),
                url('../images/hero-bg.jpg') center/cover;
    min-height: 600px;
    display: flex;
    align-items: center;
    color: white;
    padding: 4rem 0;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

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

.btn-hero {
    background: white;
    color: var(--primary-color);
    padding: 0.8rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    border: none;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: var(--secondary-color);
    color: white;
}

/* Section Titles */
.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--text-light);
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    margin: 1rem auto 0;
    border-radius: 2px;
}

/* Course Cards */
.course-card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.2);
}

.course-card img {
    height: 200px;
    object-fit: cover;
}

.course-card .card-body {
    padding: 1.5rem;
}

.course-card .card-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.course-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    margin: 1rem 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.btn-enroll {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-enroll:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

/* Features Section */
.feature-box {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    height: 100%;
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 25px rgba(124, 58, 237, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

.feature-box h4 {
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.feature-box p {
    color: var(--text-light);
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    padding: 1.5rem;
    transform: translateY(100%);
    transition: transform 0.3s;
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

/* Contact Form */
.contact-form {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.contact-info {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 2.5rem;
    border-radius: 15px;
    height: 100%;
}

.contact-info h4 {
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: start;
    margin-bottom: 1.5rem;
}

.contact-item i {
    font-size: 1.5rem;
    margin-right: 1rem;
    margin-top: 0.2rem;
}

/* Footer */
.footer-public {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-public h5 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.footer-public a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-public a:hover {
    color: white;
}

.footer-links {
    list-style: none;
    padding: 0;
}

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

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    text-align: center;
    line-height: 40px;
    border-radius: 50%;
    margin-right: 0.5rem;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
    padding-top: 1.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

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

.animate-fade-in {
    animation: fadeInUp 0.6s ease-out;
}