/**
 * ============================================================================
 * PORTAL INSTITUCIONAL COBAEM - HOJA DE ESTILOS PRINCIPAL
 * Archivo: assets/css/main.css
 * Descripción: Estilos base, componentes institucionales, accesibilidad e
 *              integración con Bulma CSS utilizando variables centralizadas.
 * ============================================================================
 */

/* --------------------------------------------------------------------------
   1. Reset Complementario y Base Accesible
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-family: var(--font-family-sans);
    font-size: 16px;
    color: var(--color-text);
    background-color: var(--color-background);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto;
}

img,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Enlace de salto al contenido principal (Accesibilidad por teclado) */
.skip-link {
    position: absolute;
    top: -100px;
    left: 1rem;
    z-index: 1000;
    background-color: var(--color-primary);
    color: #FFFFFF;
    padding: 0.65rem 1.25rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0.75rem;
    outline: 3px solid var(--color-secondary);
    outline-offset: 2px;
    color: #FFFFFF;
}

/* Estados de foco visibles para navegación por teclado */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--color-primary-focus);
}

/* --------------------------------------------------------------------------
   2. Encabezado Institucional y Navegación Principal
   -------------------------------------------------------------------------- */
.site-header {
    background-color: var(--color-background);
    border-bottom: 3px solid var(--color-primary);
    box-shadow: var(--shadow-subtle);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

.site-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-height);
    background-color: transparent;
}

/* Identidad Institucional (Logo + Nombre) */
.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.5rem 0;
    text-decoration: none;
    color: var(--color-text);
}

.brand-wrapper:hover {
    color: var(--color-primary);
}

.brand-logo {
    width: auto;
    height: 48px;
    max-width: 160px;
    object-fit: contain;
    flex-shrink: 0;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-acronym {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--color-primary);
    line-height: 1.15;
}

.brand-fullname {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
    line-height: 1.25;
}

/* Botón hamburguesa para móviles */
.nav-toggle-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0.5rem;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.nav-toggle-btn:hover {
    background-color: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.nav-toggle-icon {
    width: 22px;
    height: 22px;
    stroke: currentColor;
}

/* Menú Principal */
.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
}

.nav-item {
    position: relative;
}

.nav-link,
.nav-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 0.95rem;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    cursor: pointer;
    min-height: 44px;
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover,
.nav-dropdown-trigger:hover,
.nav-dropdown-trigger[aria-expanded="true"] {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.nav-link.is-active {
    color: var(--color-primary);
    font-weight: 600;
}

.dropdown-caret {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
}

.nav-dropdown-trigger[aria-expanded="true"] .dropdown-caret {
    transform: rotate(180deg);
}

/* Submenús Desplegables */
.nav-submenu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 250px;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--color-primary);
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    box-shadow: var(--shadow-dropdown);
    list-style: none;
    margin: 0;
    padding: 0.4rem 0;
    z-index: 200;
}

.nav-item.is-open > .nav-submenu {
    display: block;
}

.nav-submenu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1.1rem;
    font-size: 0.9rem;
    color: var(--color-text);
    text-decoration: none;
    min-height: 42px;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-submenu-link:hover,
.nav-submenu-link:focus-visible {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.external-link-indicator {
    width: 13px;
    height: 13px;
    opacity: 0.65;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

/* --------------------------------------------------------------------------
   3. Slideshow Dinámico de Imágenes (100% Ancho)
   -------------------------------------------------------------------------- */
.slideshow-section {
    width: 100%;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.slideshow-viewport {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 6;
    max-height: 540px;
    min-height: 220px;
    background-color: var(--color-secondary);
    overflow: hidden;
}

.slideshow-track {
    position: relative;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    list-style: none;
}

.slideshow-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slide), visibility var(--transition-slide);
    display: flex;
    align-items: center;
    justify-content: center;
}

.slideshow-slide.is-active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.slideshow-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Controles de navegación del Slideshow */
.slideshow-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background-color: rgba(37, 37, 37, 0.65);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.35);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.slideshow-control:hover {
    background-color: var(--color-primary);
    border-color: #FFFFFF;
}

.slideshow-control--prev {
    left: 1.25rem;
}

.slideshow-control--next {
    right: 1.25rem;
}

.slideshow-control svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
}

/* Barra inferior de indicadores y botón de pausa */
.slideshow-footer-bar {
    position: absolute;
    bottom: 0.875rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    background-color: rgba(37, 37, 37, 0.68);
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
}

.slideshow-indicators {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.slideshow-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.45);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.slideshow-dot:hover {
    background-color: rgba(255, 255, 255, 0.85);
}

.slideshow-dot.is-active {
    background-color: #FFFFFF;
    transform: scale(1.2);
}

.slideshow-pause-btn {
    background: transparent;
    border: none;
    color: #FFFFFF;
    cursor: pointer;
    padding: 0.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    padding-left: 0.55rem;
}

.slideshow-pause-btn:hover {
    color: var(--color-primary-light);
}

/* Estado vacío o de respaldo del Slideshow */
.slideshow-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    width: 100%;
    padding: 2rem;
    background-color: var(--color-surface);
    color: var(--color-text);
}

.slideshow-fallback-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin: 0 0 0.5rem 0;
}

.slideshow-fallback-text {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0;
}

/* --------------------------------------------------------------------------
   4. Secciones Institucionales Comunes
   -------------------------------------------------------------------------- */
.institutional-section {
    padding: 4rem 1.25rem;
}

.institutional-section--alt {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.section-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 2.75rem;
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: var(--line-height-heading);
    margin: 0 0 0.65rem 0;
}

.section-divider {
    width: 56px;
    height: 3px;
    background-color: var(--color-primary);
    margin: 0 auto 0.85rem auto;
    border: none;
}

.section-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    max-width: 680px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   5. Sección: Misión, Visión y Valores (3 Columnas en Escritorio)
   -------------------------------------------------------------------------- */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.pillar-block {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--color-primary);
    border-radius: var(--border-radius-md);
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
}

.pillar-header {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-bottom: 1rem;
}

.pillar-icon-box {
    width: 42px;
    height: 42px;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pillar-icon-box svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
}

.pillar-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.pillar-content {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.65;
}

.pillar-list {
    margin: 0.5rem 0 0 0;
    padding-left: 1.2rem;
    color: var(--color-text-muted);
}

.pillar-list li {
    margin-bottom: 0.35rem;
}

.provisional-badge {
    display: inline-block;
    margin-top: auto;
    padding-top: 1rem;
    font-size: 0.78rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* --------------------------------------------------------------------------
   6. Sección de Contacto (3 Bloques: Dirección, Teléfono, Correo)
   -------------------------------------------------------------------------- */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.contact-block {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.75rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon-wrapper {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon-wrapper svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.contact-label {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.contact-detail {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin: 0;
    word-break: break-word;
}

.contact-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-primary-hover);
    border-bottom-color: var(--color-primary-hover);
}

/* --------------------------------------------------------------------------
   7. Pie de Página Institucional (Footer)
   -------------------------------------------------------------------------- */
.site-footer {
    background-color: var(--color-footer);
    color: var(--color-footer-text);
    padding: 3rem 1.25rem 2rem 1.25rem;
    border-top: 4px solid var(--color-primary);
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-brand-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-footer-text);
    margin: 0 0 0.4rem 0;
}

.footer-supplemental {
    font-size: var(--font-size-sm);
    color: var(--color-footer-muted);
    max-width: 520px;
    margin: 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-link {
    color: var(--color-footer-text);
    font-size: var(--font-size-sm);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: var(--font-size-sm);
    color: var(--color-footer-muted);
}

.footer-copyright {
    margin: 0;
}

/* Notificación discreta para enlaces pendientes de configurar */
.status-banner {
    background-color: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
    color: var(--color-text);
    padding: 0.75rem 1.25rem;
    font-size: var(--font-size-sm);
    display: none;
}

.status-banner.is-visible {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.status-banner-close {
    background: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    padding: 0.2rem 0.6rem;
    font-size: 0.8rem;
    cursor: pointer;
}