/* ============================================
   EVENTOS Y SEMINARIOS - CSS PROFESIONAL
   Responsivo: 4 tarjetas/fila (desktop), 2/fila (móvil)
   Sin modo oscuro
   ============================================ */

/* === RESET Y BASE === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* === VARIABLES CSS === */
:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-bg: #f8fafc;
    --color-white: #ffffff;
    --color-border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

/* === CONTENEDOR PRINCIPAL === */
.eventos-container {
    background-color: var(--color-bg);
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 12px;
}

/* === HERO SECTION === */
.eventos-hero {
    background: linear-gradient(135deg, var(--color-primary), #7c3aed);
    padding: 32px 16px;
    text-align: center;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero-title {
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.85rem;
    font-weight: 400;
}

/* === SECCIÓN DE FILTROS === */
.filtros-section {
    background: var(--color-white);
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.filtros-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.busqueda-principal {
    display: flex;
    gap: 8px;
    max-width: 400px;
}

.search-input {
    flex: 1;
    padding: 8px 12px;
    font-size: 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.btn-search {
    padding: 8px 14px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
}

.btn-search:hover {
    background: var(--color-primary-hover);
}

.filtros-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filtro-select {
    padding: 6px 10px;
    font-size: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    cursor: pointer;
    min-width: 120px;
    outline: none;
    transition: var(--transition);
}

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

/* === SECCIÓN DE DESTACADOS === */
.destacados-section {
    padding: 24px 0;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
}

.eventos-destacados {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.evento-destacado-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: block;
}

.evento-destacado-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.evento-destacado-imagen {
    position: relative;
    height: 100px;
    overflow: hidden;
}

.evento-destacado-imagen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.badge-destacado {
    position: absolute;
    top: 6px;
    left: 6px;
    background: var(--color-warning);
    color: var(--color-white);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 600;
}

.evento-destacado-info {
    padding: 10px;
}

.evento-destacado-info h3 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.evento-destacado-info .evento-descripcion {
    font-size: 0.7rem;
    color: var(--color-text-light);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.evento-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.evento-meta span {
    font-size: 0.65rem;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    gap: 3px;
}

.evento-meta i {
    font-size: 0.6rem;
    color: var(--color-primary);
}

/* === LISTA DE EVENTOS - GRID 4 COLUMNAS === */
.eventos-lista-section {
    padding: 24px 0 40px;
}

.resultados-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 8px;
}

.resultados-count {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.eventos-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

/* === TARJETA DE EVENTO === */
.evento-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.evento-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.evento-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.evento-imagen {
    position: relative;
    height: 90px;
    overflow: hidden;
}

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

.evento-card:hover .evento-imagen img {
    transform: scale(1.05);
}

/* === BADGES === */
.evento-badges {
    position: absolute;
    top: 6px;
    left: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.badge {
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.6rem;
    font-weight: 600;
}

.badge-gratis {
    background: var(--color-success);
    color: var(--color-white);
}

.badge-en-curso {
    background: var(--color-danger);
    color: var(--color-white);
}

.badge-modalidad {
    background: var(--color-primary);
    color: var(--color-white);
}

/* === CONTENIDO DE TARJETA === */
.evento-content {
    padding: 10px;
    display: flex;
    gap: 10px;
}

.evento-fecha {
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    padding: 6px 8px;
    text-align: center;
    min-width: 40px;
    flex-shrink: 0;
}

.fecha-dia {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.fecha-mes {
    font-size: 0.6rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    margin-top: 2px;
}

.evento-info {
    flex: 1;
    min-width: 0;
}

.evento-tipo {
    display: inline-block;
    font-size: 0.6rem;
    color: var(--color-primary);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 3px;
}

.evento-titulo {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.evento-info .evento-descripcion {
    font-size: 0.68rem;
    color: var(--color-text-light);
    line-height: 1.4;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* === DETALLES DEL EVENTO === */
.evento-detalles {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 6px;
}

.detalle-item {
    display: flex;
    align-items: center;
    gap: 3px;
    font-size: 0.62rem;
    color: var(--color-text-light);
}

.detalle-item i {
    font-size: 0.58rem;
    color: var(--color-secondary);
}

/* === CRONÓMETRO === */
.countdown-timer {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    border-radius: var(--radius-sm);
    padding: 6px 8px;
    margin-bottom: 6px;
}

.countdown-timer.urgent {
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
}

.countdown-display {
    font-size: 0.65rem;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.countdown-display i {
    color: var(--color-primary);
    font-size: 0.7rem;
}

.countdown-timer.urgent .countdown-display i {
    color: var(--color-danger);
}

.time-unit {
    display: inline-flex;
    align-items: baseline;
    gap: 1px;
}

.time-value {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 0.72rem;
}

.countdown-timer.urgent .time-value {
    color: var(--color-danger);
}

.time-label {
    font-size: 0.55rem;
    color: var(--color-text-light);
}

/* === FOOTER DE TARJETA === */
.evento-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 6px;
    border-top: 1px solid var(--color-border);
    gap: 6px;
    flex-wrap: wrap;
}

.evento-organizador,
.evento-cupos {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.6rem;
    color: var(--color-text-light);
}

.evento-organizador i,
.evento-cupos i {
    font-size: 0.65rem;
    color: var(--color-secondary);
}

/* === PAGINACIÓN === */
.paginacion {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.btn-paginacion {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.75rem;
}

.btn-paginacion:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.paginacion-info {
    font-size: 0.75rem;
    color: var(--color-text-light);
    padding: 0 8px;
}

/* === NO RESULTADOS === */
.no-resultados {
    text-align: center;
    padding: 48px 16px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
}

.no-resultados i {
    font-size: 2.5rem;
    color: var(--color-border);
    margin-bottom: 12px;
}

.no-resultados h3 {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 6px;
}

.no-resultados p {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

/* === TEXTO AUXILIAR === */
.text-muted {
    color: var(--color-text-light);
    font-style: italic;
}

/* ============================================
   RESPONSIVE - TABLETS (3 columnas)
   ============================================ */
@media (max-width: 1024px) {
    .eventos-grid,
    .eventos-destacados {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }

    .container {
        padding: 0 10px;
    }

    .hero-title {
        font-size: 1.3rem;
    }
}

/* ============================================
   RESPONSIVE - TABLETS PEQUEÑAS (2 columnas)
   ============================================ */
@media (max-width: 768px) {
    .eventos-grid,
    .eventos-destacados {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .eventos-hero {
        padding: 24px 12px;
    }

    .hero-title {
        font-size: 1.2rem;
    }

    .hero-subtitle {
        font-size: 0.78rem;
    }

    .filtros-section {
        padding: 12px 0;
    }

    .filtros-grid {
        gap: 6px;
    }

    .filtro-select {
        font-size: 0.7rem;
        padding: 5px 8px;
        min-width: 100px;
    }

    .section-title {
        font-size: 1rem;
    }

    .evento-imagen,
    .evento-destacado-imagen {
        height: 80px;
    }

    .evento-titulo {
        font-size: 0.72rem;
    }

    .evento-info .evento-descripcion,
    .evento-destacado-info .evento-descripcion {
        font-size: 0.65rem;
    }

    .countdown-timer {
        padding: 5px 6px;
    }

    .countdown-display {
        font-size: 0.6rem;
    }

    .time-value {
        font-size: 0.68rem;
    }
}

/* ============================================
   RESPONSIVE - MÓVIL (2 columnas compactas)
   ============================================ */
@media (max-width: 576px) {
    .container {
        padding: 0 8px;
    }

    .eventos-grid,
    .eventos-destacados {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }

    .eventos-hero {
        padding: 20px 10px;
    }

    .hero-title {
        font-size: 1.1rem;
    }

    .hero-subtitle {
        font-size: 0.72rem;
    }

    .filtros-section {
        padding: 10px 0;
    }

    .busqueda-principal {
        max-width: 100%;
    }

    .search-input {
        font-size: 0.75rem;
        padding: 7px 10px;
    }

    .btn-search {
        padding: 7px 12px;
        font-size: 0.75rem;
    }

    .filtros-grid {
        gap: 5px;
    }

    .filtro-select {
        font-size: 0.68rem;
        padding: 5px 6px;
        min-width: 90px;
        flex: 1 1 calc(50% - 5px);
    }

    .section-title {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }

    .destacados-section,
    .eventos-lista-section {
        padding: 16px 0;
    }

    /* Tarjetas más compactas en móvil */
    .evento-card,
    .evento-destacado-card {
        border-radius: var(--radius-sm);
    }

    .evento-imagen,
    .evento-destacado-imagen {
        height: 70px;
    }

    .badge {
        font-size: 0.55rem;
        padding: 2px 4px;
    }

    .badge-destacado {
        font-size: 0.55rem;
        padding: 2px 5px;
    }

    .evento-content {
        padding: 8px;
        gap: 6px;
    }

    .evento-destacado-info {
        padding: 8px;
    }

    .evento-fecha {
        padding: 4px 6px;
        min-width: 34px;
    }

    .fecha-dia {
        font-size: 0.88rem;
    }

    .fecha-mes {
        font-size: 0.55rem;
    }

    .evento-tipo {
        font-size: 0.55rem;
    }

    .evento-titulo {
        font-size: 0.68rem;
        margin-bottom: 3px;
    }

    .evento-destacado-info h3 {
        font-size: 0.7rem;
    }

    .evento-info .evento-descripcion,
    .evento-destacado-info .evento-descripcion {
        font-size: 0.6rem;
        -webkit-line-clamp: 1;
        line-clamp: 1;
        margin-bottom: 4px;
    }

    .evento-detalles {
        gap: 4px;
        margin-bottom: 4px;
    }

    .detalle-item {
        font-size: 0.58rem;
        gap: 2px;
    }

    .detalle-item i {
        font-size: 0.55rem;
    }

    .evento-meta span {
        font-size: 0.58rem;
    }

    .evento-meta i {
        font-size: 0.55rem;
    }

    .countdown-timer {
        padding: 4px 5px;
        margin-bottom: 4px;
    }

    .countdown-display {
        font-size: 0.55rem;
        gap: 4px;
    }

    .countdown-display i {
        font-size: 0.6rem;
    }

    .time-value {
        font-size: 0.62rem;
    }

    .time-label {
        font-size: 0.5rem;
    }

    .evento-footer {
        padding-top: 5px;
        gap: 4px;
    }

    .evento-organizador,
    .evento-cupos {
        font-size: 0.55rem;
        gap: 2px;
    }

    .evento-organizador i,
    .evento-cupos i {
        font-size: 0.58rem;
    }

    /* Paginación móvil */
    .paginacion {
        gap: 5px;
        margin-top: 16px;
    }

    .btn-paginacion {
        width: 28px;
        height: 28px;
        font-size: 0.68rem;
    }

    .paginacion-info {
        font-size: 0.68rem;
    }

    /* No resultados móvil */
    .no-resultados {
        padding: 32px 12px;
    }

    .no-resultados i {
        font-size: 2rem;
    }

    .no-resultados h3 {
        font-size: 0.9rem;
    }

    .no-resultados p {
        font-size: 0.75rem;
    }

    .btn {
        padding: 7px 14px;
        font-size: 0.75rem;
    }

    .resultados-header {
        margin-bottom: 10px;
    }

    .resultados-count {
        font-size: 0.68rem;
    }
}

/* ============================================
   RESPONSIVE - MÓVIL MUY PEQUEÑO
   ============================================ */
@media (max-width: 380px) {
    .container {
        padding: 0 6px;
    }

    .eventos-grid,
    .eventos-destacados {
        gap: 5px;
    }

    .hero-title {
        font-size: 1rem;
    }

    .hero-subtitle {
        font-size: 0.68rem;
    }

    .filtro-select {
        font-size: 0.65rem;
        min-width: 85px;
    }

    .evento-imagen,
    .evento-destacado-imagen {
        height: 60px;
    }

    .evento-content {
        padding: 6px;
        flex-direction: column;
        gap: 4px;
    }

    .evento-fecha {
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 4px 6px;
    }

    .fecha-dia {
        font-size: 0.8rem;
    }

    .fecha-mes {
        font-size: 0.5rem;
        margin-top: 0;
    }

    .evento-titulo {
        font-size: 0.65rem;
    }

    .evento-destacado-info h3 {
        font-size: 0.65rem;
    }

    .evento-info .evento-descripcion {
        display: none;
    }

    .countdown-display {
        font-size: 0.52rem;
    }

    .time-value {
        font-size: 0.58rem;
    }
}

/* ============================================
   UTILIDADES
   ============================================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Forzar repintado en iOS */
@supports (-webkit-touch-callout: none) {
    .eventos-grid,
    .eventos-destacados {
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
    }
}