:root {
    --primary-color: #0056D2;
    --secondary-color: #00A8E8;
    --accent-color: #FF6B35;
    --dark-color: #1A2238;
    --light-color: #F8F9FA;
    --gradient-primary: linear-gradient(135deg, #0056D2 0%, #00A8E8 100%);
    --gradient-accent: linear-gradient(135deg, #FF6B35 0%, #FF9E00 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--dark-color);
}

/* Navigation */
.navbar-brand {
    font-weight: 900;
    font-size: 1.8rem;
    color: var(--primary-color) !important;
}

.navbar-brand span {
    color: var(--accent-color);
}

/* Hero Section */
.hero-section {
    background: var(--gradient-primary);
    color: white;
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    top: -150px;
    right: -150px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
    max-width: 600px;
}

/* Buttons */
.btn-primary-custom {
    background: var(--gradient-accent);
    border: none;
    padding: 15px 35px;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
    color: white;
    text-decoration: none;
    display: inline-block;
}

.btn-primary-custom:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 107, 53, 0.4);
    color: white;
}

.btn-outline-light {
    border: 2px solid white;
    padding: 13px 35px;
    border-radius: 50px;
    font-weight: 600;
}

/* Sections */
.section-padding {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 70px;
    height: 5px;
    background: var(--gradient-accent);
    bottom: -10px;
    left: 0;
    border-radius: 5px;
}

.lead {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

/* Stats */
.stats-section {
    background: var(--light-color);
    padding: 80px 0;
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

.stat-text {
    font-size: 1.1rem;
    color: #666;
    margin-top: 10px;
}

/* Course Cards */
.course-card {
    border-radius: 15px;
    overflow: hidden;
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    height: 100%;
    margin-bottom: 30px;
    position: relative;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--gradient-primary);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

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

.course-card .card-body {
    padding: 25px;
}

.course-tag {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.course-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

/* Features */
.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: 20px;
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

/* Testimonials */
.testimonial-card {
    padding: 30px;
    border-radius: 15px;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
    height: 100%;
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 20px;
    position: relative;
}

.testimonial-text::before {
    content: '"';
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: -20px;
    left: -10px;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
}

/* CTA Section */
.cta-section {
    background: var(--gradient-primary);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: white;
}

.cta-text {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 70px 0 30px;
}

.footer h5 {
    color: white;
    margin-bottom: 25px;
    font-size: 1.2rem;
}

.footer-text {
    color: #aaa;
}

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

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

.footer-links a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s;
}

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

.social-icons a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    margin-right: 10px;
    color: white;
    transition: all 0.3s;
}

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

.copyright {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

.copyright a {
    color: #aaa;
    text-decoration: none;
}

.copyright a:hover {
    color: white;
}

/* Animations */
.floating-element {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-section {
        padding: 120px 0 80px;
    }
    
    .section-padding {
        padding: 70px 0;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}