/* Courses Page Styles */
.courses-hero {
    padding: 8rem 0 4rem;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.hero-features .feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.hero-features .feature i {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Course Filters */
.course-filters {
    padding: 2rem 0;
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.filter-controls {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.filter-group select {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.filter-group select:focus {
    border-color: var(--primary-color);
}

.search-group {
    position: relative;
    margin-left: auto;
}

.search-group input {
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    outline: none;
    width: 250px;
    transition: border-color 0.3s ease;
}

.search-group input:focus {
    border-color: var(--primary-color);
}

.search-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

/* Featured Courses */
.featured-courses {
    padding: 4rem 0;
    background: #f8fafc;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.course-card {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

.course-card.featured {
    border-color: var(--primary-color);
}

.course-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.course-card:hover .course-image img {
    transform: scale(1.05);
}

.course-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

.course-duration {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
}

.course-content {
    padding: 2rem;
}

.course-header {
    margin-bottom: 1rem;
}

.course-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.course-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stars {
    display: flex;
    gap: 0.125rem;
}

.stars i {
    color: #fbbf24;
    font-size: 0.875rem;
}

.rating-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.course-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.course-features {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.feature-item i {
    color: var(--primary-color);
}

.course-instructor {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 10px;
}

.course-instructor img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.instructor-info {
    display: flex;
    flex-direction: column;
}

.instructor-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.instructor-title {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.course-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

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

.original-price {
    font-size: 1rem;
    color: var(--text-secondary);
    text-decoration: line-through;
}

.discount {
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.enroll-btn {
    padding: 0.75rem 1.5rem;
    font-weight: 600;
}

/* Learning Paths */
.learning-paths {
    padding: 5rem 0;
}

.paths-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.path-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
    border: 2px solid var(--border-color);
}

.path-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.path-header {
    text-align: center;
    margin-bottom: 2rem;
}

.path-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.path-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.path-duration {
    color: var(--text-secondary);
    font-weight: 500;
}

.path-courses {
    margin-bottom: 2rem;
}

.course-step {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.course-step.completed {
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--success-color);
}

.course-step.current {
    background: rgba(99, 102, 241, 0.1);
    border-left: 4px solid var(--primary-color);
}

.course-step:hover {
    background: #f8fafc;
}

.step-number {
    width: 30px;
    height: 30px;
    background: var(--border-color);
    color: var(--text-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.course-step.completed .step-number {
    background: var(--success-color);
    color: white;
}

.course-step.current .step-number {
    background: var(--primary-color);
    color: white;
}

.step-title {
    font-weight: 500;
    color: var(--text-primary);
}

.path-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.path-price {
    text-align: left;
}

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

.individual-price {
    font-size: 0.875rem;
    color: var(--success-color);
    font-weight: 600;
}

/* Course Modal */
.course-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.course-modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: var(--text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .filter-controls {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .search-group {
        margin-left: 0;
    }
    
    .search-group input {
        width: 100%;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .course-features {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .course-footer {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .paths-grid {
        grid-template-columns: 1fr;
    }
    
    .path-footer {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .course-content {
        padding: 1.5rem;
    }
    
    .course-instructor {
        flex-direction: column;
        text-align: center;
    }
    
    .course-price {
        flex-direction: column;
        gap: 0.25rem;
        align-items: center;
    }
    
    .modal-content {
        padding: 1.5rem;
        width: 95%;
    }
}