/* Courses Hero */
.courses-hero {
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    padding: 3rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.courses-hero-content h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.courses-hero-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

.courses-hero-shapes {
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 1rem;
}

.shape {
    font-size: 2.5rem;
    animation: float 3s ease-in-out infinite;
}

.shape-2 { animation-delay: 0.5s; }
.shape-3 { animation-delay: 1s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Filters */
.filters-section {
    margin-bottom: 2rem;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.filter-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}

.filter-tab:hover {
    border-color: var(--primary-light);
    color: var(--primary);
}

.filter-tab.active {
    background: var(--primary-50);
    border-color: var(--primary);
    color: var(--primary);
}

.tab-icon {
    font-size: 1.1rem;
}

.filter-options {
    display: flex;
    gap: 1rem;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    color: var(--dark);
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Course Card */
.course-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.course-card-header {
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.course-card-header.health { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.course-card-header.social { background: linear-gradient(135deg, #8b5cf6, #c4b5fd); }
.course-card-header.tech { background: linear-gradient(135deg, #3b82f6, #93c5fd); }
.course-card-header.lang { background: linear-gradient(135deg, #ec4899, #f9a8d4); }
.course-card-header.business { background: linear-gradient(135deg, #f59e0b, #fcd34d); }
.course-card-header.gov { background: linear-gradient(135deg, #10b981, #6ee7b7); }
.course-card-header.default { background: linear-gradient(135deg, #6b7280, #9ca3af); }

.course-icon {
    font-size: 3.5rem;
}

.course-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.35rem 0.85rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--dark);
}

.course-card-body {
    padding: 1.5rem;
}

.course-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.course-card-desc {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--gray-400);
}

.course-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.course-card-meta i {
    color: var(--primary);
}

.course-card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
}

/* Loading State */
.loading-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty State */
.empty-state-full {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    background: var(--white);
    border-radius: var(--radius-xl);
}

.empty-state-full i {
    font-size: 4rem;
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.empty-state-full h3 {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.empty-state-full p {
    color: var(--gray-400);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.pagination-btn {
    padding: 0.75rem 1.5rem;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    font-size: 0.9rem;
    color: var(--gray-500);
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--white);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border: none;
    border-radius: 50%;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
    z-index: 1;
}

.modal-close:hover {
    background: var(--gray-200);
}

.modal-content {
    padding: 2rem;
}

.modal-loading {
    text-align: center;
    padding: 3rem;
}

.modal-course-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.modal-course-icon {
    font-size: 3rem;
}

.modal-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary-50);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.modal-course-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.modal-course-desc {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.modal-course-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.modal-stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-600);
}

.modal-stat i {
    color: var(--primary);
}

.modal-section {
    margin-bottom: 1.5rem;
}

.modal-section h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-section h3 i {
    color: var(--primary);
}

.learning-outcomes {
    list-style: none;
}

.learning-outcomes li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--gray-600);
}

.learning-outcomes li i {
    color: #10b981;
    margin-top: 0.2rem;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-100);
}

.price-label {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-500);
}

.price-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Search Box */
.search-box {
    position: relative;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

.search-box input {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    width: 250px;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .courses-hero {
        padding: 2rem;
    }
    
    .courses-hero-shapes {
        display: none;
    }
    
    .filter-options {
        flex-direction: column;
    }
    
    .filter-select {
        width: 100%;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .modal-footer {
        flex-direction: column;
        gap: 1rem;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
}