:root {
    --primary-red: #e30613;
    --primary-yellow: #ffd700;
    --primary-white: #ffffff;
    --text-dark: #333333;
    --text-light: #666666;
    --transition-speed: 0.3s;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    padding-top: 70px;
    line-height: 1.6;
}

/* Navigation */
.navbar {
    box-shadow: var(--box-shadow);
    background-color: var(--primary-white) !important;
    padding: 0.5rem 0;
}

.navbar-brand {
    padding: 0;
}

.navbar-brand img {
    max-height: 50px;
    transition: transform var(--transition-speed) ease;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-red);
    transition: width var(--transition-speed) ease;
}

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

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

.dropdown-menu {
    border: none;
    box-shadow: var(--box-shadow);
    border-radius: 8px;
    padding: 0.5rem;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all var(--transition-speed) ease;
}

.dropdown-item:hover {
    background-color: rgba(227, 6, 19, 0.1);
    color: var(--primary-red);
}

/* Hero Slider */
.hero-slider {
    margin-top: -70px;
    overflow: hidden;
}

.carousel-item {
    height: 600px;
    position: relative;
}

.carousel-item img {
    object-fit: cover;
    height: 100%;
    width: 100%;
    transition: transform 8s ease-in-out;
}

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

.carousel-caption {
    background: rgba(0, 0, 0, 0.5);
    padding: 2rem;
    border-radius: 10px;
    bottom: 20%;
}

.carousel-control-prev,
.carousel-control-next {
    width: 5%;
    opacity: 0.8;
    transition: opacity var(--transition-speed) ease;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
    opacity: 1;
}

.carousel-indicators {
    bottom: -40px;
}

.carousel-indicators button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin: 0 5px;
    background-color: var(--primary-red);
    opacity: 0.5;
    transition: all var(--transition-speed) ease;
}

.carousel-indicators button.active {
    opacity: 1;
    transform: scale(1.2);
}

/* Section Titles and Headings */
.section-title {
    color: var(--primary-red);
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
    font-size: 2.2rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-red);
}

/* Cards and Content */
.card {
    border: none;
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed) ease;
    border-radius: 10px;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.card-title {
    color: var(--primary-red);
    font-weight: 600;
    font-size: 1.2rem;
}

.card-text {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Course Sections */
.course-section {
    padding: 4rem 0;
}

.course-section img {
    border-radius: 10px;
    transition: transform var(--transition-speed) ease;
}

.course-section img:hover {
    transform: scale(1.02);
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-red);
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 5px;
    transition: all var(--transition-speed) ease;
}

.btn-primary:hover {
    background-color: #c00511;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(227, 6, 19, 0.2);
}

/* Footer */
.footer {
    background-color: var(--primary-red);
    color: var(--primary-white);
    padding: 3rem 0 1rem;
}

.footer h5 {
    color: var(--primary-yellow);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer a {
    color: var(--primary-white);
    text-decoration: none;
    transition: all var(--transition-speed) ease;
    opacity: 0.9;
}

.footer a:hover {
    color: var(--primary-yellow);
    opacity: 1;
}

.social-links a {
    font-size: 1.5rem;
    margin-right: 1rem;
    transition: transform var(--transition-speed) ease;
}

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

.copyright {
    color: var(--primary-white);
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Welcome Section */
.welcome-section {
    background-color: var(--primary-white);
}

.welcome-text {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto 1rem;
}

.aishe-code {
    font-weight: 600;
    color: var(--primary-red);
}

/* Quick Overview */
.quick-overview {
    background-color: #f8f9fa;
}

/* Responsive Design */
@media (max-width: 768px) {
    .carousel-item {
        height: 400px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .welcome-text {
        font-size: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

@media (max-width: 576px) {
    .carousel-item {
        height: 300px;
    }
    
    .navbar-brand img {
        max-height: 40px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .carousel-caption {
        padding: 1rem;
        bottom: 10%;
    }
}