/* Course Details Page Styles */
.course-details-container {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
}

/* Hero Section */
.course-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
}

.course-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 100%);
    z-index: 1;
}

.course-hero .container {
    position: relative;
    z-index: 2;
}

.hero-logo {
    max-width: 200px;
    height: auto;
    margin-bottom: 2rem;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    transition: all 0.3s ease;
}

.hero-logo:hover {
    opacity: 1;
    transform: scale(1.05);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.hero-features {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    opacity: 0.9;
}

.feature-item i {
    color: #ffc107;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.hero-cta .btn {
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.hero-cta .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Content Sections */
.course-section {
    padding: 1.5rem 0;
}

.course-section:nth-child(even) {
    background-color: #f8f9fa;
}

/* Remove spacing for the first section after hero */
#overview-section {
    padding-top: 0;
    margin-top: -3.5rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 0.5rem;
}

.section-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #495057;
    margin-top: 0.5rem;
}

.section-content h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

.section-content ul {
    padding-left: 1.5rem;
}

.section-content li {
    margin-bottom: 0.5rem;
}

/* Cards */
.info-card {
    background: white;
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.info-card .card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.info-card .card-icon i {
    font-size: 1.5rem;
    color: white;
}

.info-card .card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.info-card .card-content {
    color: #6c757d;
    line-height: 1.6;
}

/* Pricing Section */
.pricing-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.pricing-section .section-title {
    color: white;
}

.pricing-section .section-title::after {
    background: white;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pricing-card .period {
    font-size: 1.1rem;
    opacity: 0.8;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    text-align: center;
}

.cta-section .section-title {
    color: white;
}

.cta-section .section-title::after {
    background: #ffc107;
    left: 50%;
    transform: translateX(-50%);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.cta-buttons .btn {
    padding: 1rem 2.5rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.cta-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .info-card {
        margin-bottom: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* Remove spacing for the first section after hero on mobile */
    #overview-section {
        padding-top: 0;
        margin-top: -4.5rem;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up {
    opacity: 0;
    transform: translateY(50px);
    animation: slideUp 1s ease forwards;
    animation-delay: 0.2s;
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Additional responsive rules for very small screens */
@media (max-width: 576px) {
    #overview-section {
        padding-top: 0;
        margin-top: -5rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}