/* HERO DE CURSOS */
.cursos-hero {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, #1a3a6e 100%);
    padding: 140px 0 80px;
    overflow: hidden;
    z-index: 5;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.cursos-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 50px;
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-badge svg {
    stroke: var(--color-secondary);
}

.cursos-hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 800;
    color: white;
    margin-bottom: 20px;
    line-height: 1.2;
}

.cursos-hero .text-gradient {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #f0c040 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cursos-hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-search {
    max-width: 500px;
    margin: 0 auto;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: white;
    padding: 12px 20px;
    border-radius: 50px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.search-box svg {
    stroke: var(--color-gray);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1rem;
    font-family: var(--font-primary);
    color: var(--color-dark);
    background: transparent;
}

.search-box input::placeholder {
    color: var(--color-gray);
}

.cursos-section {
    background: var(--color-light);
}

/* Filtros de categoría (botones) */
.filter-section {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
    justify-content: center;
    padding: 20px;
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.filter-btn {
    padding: 10px 24px;
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-gray-light);
    border-radius: 25px;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* Grid de cursos */
.cursos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

/* Card de curso */
.curso-card {
    background: var(--color-white);
    border-radius: 16px;
    padding: 35px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    opacity: 1;
    transform: translateY(0);
}

.curso-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.curso-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 20px;
    background: var(--color-light);
}

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

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

.curso-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--color-primary);
    opacity: 0.5;
}

.curso-placeholder svg {
    opacity: 0.6;
}

.curso-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.curso-categoria {
    display: inline-block;
    padding: 6px 16px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 15px;
    width: fit-content;
}

.curso-title {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: 15px;
    font-weight: 600;
    line-height: 1.3;
}

.curso-description {
    color: var(--color-gray);
    margin-bottom: 20px;
    flex-grow: 1;
    line-height: 1.6;
}

.curso-features {
    list-style: none;
    margin-bottom: 25px;
    padding: 15px;
    background: var(--color-light);
    border-radius: 8px;
}

.curso-features li {
    padding: 6px 0;
    color: var(--color-text);
    font-size: 0.95rem;
}

.curso-features li strong {
    color: var(--color-primary);
    font-weight: 600;
}

.btn-curso {
    display: inline-block;
    padding: 12px 28px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    transition: var(--transition);
}

.btn-curso:hover {
    background: var(--color-primary-light);
    transform: translateX(5px);
}

.courses-catalog-section {
    padding: 80px 0;
    background: var(--color-light);
    position: relative;
    z-index: 10;
}

.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    margin-top: 40px;
}

/* SIDEBAR DE FILTROS */
.filters-sidebar {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    height: fit-content;
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-gray-light);
}

.filters-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.filters-header h3 svg {
    stroke: var(--color-secondary);
}

.btn-clear-filters {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--color-light);
    border: none;
    color: var(--color-gray);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    padding: 6px 12px;
    border-radius: 20px;
}

.btn-clear-filters:hover {
    background: #fee;
    color: #c22;
}

.btn-clear-filters svg {
    stroke: currentColor;
}

.filter-group {
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--color-gray-light);
}

.filter-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.filter-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.filter-title svg {
    stroke: var(--color-secondary);
    flex-shrink: 0;
}

.filter-group-last {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Checkbox personalizado */
.filter-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    position: relative;
    padding-left: 32px;
    user-select: none;
    transition: var(--transition);
}

.filter-checkbox:hover {
    color: var(--color-primary);
}

.filter-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.filter-checkbox .checkmark {
    position: absolute;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: white;
    border: 2px solid var(--color-gray);
    border-radius: 4px;
    transition: var(--transition);
}

.filter-checkbox:hover .checkmark {
    border-color: var(--color-primary);
}

.filter-checkbox input:checked ~ .checkmark {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.filter-checkbox .checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.filter-checkbox input:checked ~ .checkmark:after {
    display: block;
}

.filter-label {
    flex: 1;
    font-size: 0.95rem;
}

.filter-count {
    background: var(--color-gray-light);
    color: var(--color-gray);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Filtro de precio */
.filter-price-range {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.price-inputs {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 8px;
}

.price-inputs input {
    width: 100%;
    min-width: 0;
    padding: 6px 8px;
    border: 1px solid var(--color-gray-light);
    border-radius: 6px;
    font-size: 0.8rem;
    text-align: center;
    background: var(--color-light);
    transition: var(--transition);
}

.price-inputs input:focus {
    border-color: var(--color-primary);
    background: white;
    outline: none;
}

.price-inputs input::-webkit-outer-spin-button,
.price-inputs input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.price-inputs input[type=number] {
    -moz-appearance: textfield;
}

.price-separator {
    color: var(--color-gray);
    font-size: 0.8rem;
    font-weight: 500;
}

.price-slider {
    position: relative;
    height: 6px;
    background: var(--color-gray-light);
    border-radius: 3px;
}

.price-slider input[type="range"] {
    position: absolute;
    width: 100%;
    height: 6px;
    background: transparent;
    pointer-events: none;
    -webkit-appearance: none;
}

.price-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    pointer-events: all;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}

.price-slider input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    pointer-events: all;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}

.price-display {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-gray);
    font-weight: 600;
    background: var(--color-light);
    padding: 8px 12px;
    border-radius: 6px;
}

   ÁREA DE RESULTADOS
.catalog-results {
    min-height: 600px;
}

.results-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px 24px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.results-info {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
}

.results-sort {
    display: flex;
    align-items: center;
    gap: 12px;
}

.results-sort label {
    font-size: 0.95rem;
    color: var(--color-gray);
    font-weight: 500;
}

.sort-select {
    padding: 8px 16px;
    border: 1px solid var(--color-gray-light);
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    background: white;
    transition: var(--transition);
}

.sort-select:hover {
    border-color: var(--color-primary);
}

.sort-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(18, 29, 104, 0.1);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.course-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.course-card.course-destacado {
    border: 2px solid var(--color-secondary);
}

.badge-destacado {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--color-secondary);
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    z-index: 10;
    text-transform: uppercase;
}

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

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.course-card:hover .course-image img {
    transform: scale(1.1);
}

.course-categoria {
    position: absolute;
    bottom: 12px;
    left: 12px;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
    text-transform: capitalize;
}

/* Badges por categoría */
.badge-negocios { background: #2c3e50; }
.badge-informatica { background: #3498db; }
.badge-marketing { background: #e74c3c; }
.badge-educacion { background: #27ae60; }
.badge-ambiental { background: #16a085; }
.badge-sence { background: #9b59b6; }

.course-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.course-description {
    font-size: 0.9rem;
    color: var(--color-gray);
    margin-bottom: 16px;
    flex: 1;
    line-height: 1.6;
}

.course-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-gray-light);
    font-size: 0.85rem;
    color: var(--color-gray);
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* ESTADOS ESPECIALES */
.loading-state,
.error-state,
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
}

.loading-state .spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-gray-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.no-results-icon,
.error-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.no-results h3,
.error-state h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--color-dark);
}

.no-results p,
.error-state p {
    color: var(--color-gray);
    margin-bottom: 24px;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
}

.pagination-btn,
.pagination-number {
    padding: 10px 16px;
    border: 1px solid var(--color-gray-light);
    background: white;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.pagination-number.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination-ellipsis {
    padding: 10px 8px;
    color: var(--color-gray);
}

@media (max-width: 1024px) {
    .catalog-layout {
        grid-template-columns: 250px 1fr;
        gap: 30px;
    }

    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .catalog-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .filters-sidebar {
        position: static;
    }

    .courses-grid,
    .cursos-grid {
        grid-template-columns: 1fr;
    }

    .results-toolbar {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .results-sort {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
    }

    .sort-select {
        width: 100%;
    }

    .filter-section {
        gap: 8px;
        padding: 15px;
    }

    .filter-btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .courses-catalog-section {
        padding: 40px 0;
    }

    .filters-sidebar {
        padding: 16px;
    }

    .course-card {
        margin-bottom: 16px;
    }

    .pagination {
        flex-wrap: wrap;
    }
    
    .cursos-hero {
        padding: 120px 0 60px;
    }
    
    .cursos-hero h1 {
        font-size: 1.8rem;
    }
    
    .cursos-hero p {
        font-size: 1rem;
    }
}