/* Global Styles */
:root {
    --primary-color: #4e73df;
    --secondary-color: #2e59d9;
    --dark-color: #2c3e50;
    --light-color: #f8f9fc;
    --success-color: #1cc88a;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

/* Navigation */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    color: var(--primary-color) !important;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-link {
    color: var(--dark-color) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

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

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1501504905252-473c47e087f8?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    height: 100vh;
    color: white;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(78, 115, 223, 0.3), rgba(46, 89, 217, 0.3));
}

.hero-shape {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: white;
    clip-path: polygon(0 100%, 100% 100%, 100% 0);
}

.hero-section h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
    font-weight: 700;
}

.hero-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
    opacity: 0.9;
}

.hero-section .btn {
    animation: fadeInUp 1s ease 0.4s;
    animation-fill-mode: both;
}

.achievement {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(5px);
    transition: transform 0.3s ease;
}

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

.achievement h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* Features Section */
.section-header {
    margin-bottom: 3rem;
}

.section-header .badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    font-weight: 500;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 1rem 0;
}

.feature-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: var(--primary-color);
}

.feature-card:hover .feature-icon i {
    color: white;
}

.feature-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.feature-link:hover {
    color: var(--secondary-color);
}

.feature-link i {
    transition: transform 0.3s ease;
}

.feature-link:hover i {
    transform: translateX(5px);
}

/* Courses Section */
.course-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.course-img {
    position: relative;
    overflow: hidden;
}

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

.course-card:hover .course-img img {
    transform: scale(1.1);
}

.course-overlay {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.course-content {
    padding: 1.5rem;
}

.course-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    color: #6c757d;
    font-size: 0.9rem;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

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

/* Testimonials Section */
.testimonial-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.testimonial-rating {
    color: var(--warning-color);
}

.testimonial-text {
    font-style: italic;
    color: #6c757d;
}

.testimonial-card img {
    width: 50px;
    height: 50px;
    object-fit: cover;
}

/* Contact Section */
.contact-wrapper {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.contact-info {
    height: 100%;
}

.contact-info i {
    font-size: 1.2rem;
}

.social-links a {
    color: var(--dark-color);
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

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

.form-control, .form-select {
    padding: 0.8rem;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    box-shadow: none;
    border-color: var(--primary-color);
}

/* Footer */
footer {
    background-color: var(--dark-color);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
}

.footer-links li {
    margin-bottom: 0.5rem;
}

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

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.newsletter-form .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.newsletter-form .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

/* Custom Button Styles */
.btn {
    padding: 0.8rem 2rem;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-outline-light {
    border-width: 2px;
}

.btn-outline-light:hover {
    transform: translateY(-2px);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section p {
        font-size: 1.1rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .feature-card, .testimonial-card {
        margin-bottom: 1.5rem;
    }
    
    .course-img img {
        height: 200px;
    }
    
    .contact-info {
        margin-bottom: 1.5rem;
    }
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* Top Students Section */
.student-card {
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.student-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
}

.student-rank .badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
}

.student-info img {
    border: 3px solid var(--primary-color);
    padding: 3px;
    transition: all 0.3s ease;
}

.student-card:hover .student-info img {
    transform: scale(1.05);
}

.student-info h4 {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.achievement-item {
    padding: 0.5rem;
    border-radius: 5px;
    background-color: var(--light-color);
    transition: all 0.3s ease;
}

.achievement-item:hover {
    background-color: rgba(78, 115, 223, 0.1);
}

.achievement-item span:last-child {
    font-size: 1.1rem;
}