/* =========================================================
   ESTILO PRINCIPAL
   Institución Educativa Villa de los Andes
========================================================= */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-principal);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container-xl {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-principal);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.section {
  padding-block: var(--space-xl);
}

.section-header {
  max-width: 720px;
  margin-bottom: var(--space-md);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-secondary);
  margin-bottom: 0.75rem;
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--brand-secondary);
  display: inline-block;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.2;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-top: 0.75rem;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-primary {
  background: var(--brand-primary);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background: var(--brand-accent);
  color: var(--brand-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-outline {
  background: transparent;
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

[data-theme="dark"] .btn-outline {
  color: var(--brand-light);
  border-color: var(--brand-light);
}

.btn-outline:hover {
  background: var(--brand-primary);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.btn-light {
  background: var(--color-blanco);
  color: var(--brand-primary);
}

.btn-light:hover {
  background: var(--bg-surface-alt);
  transform: translateY(-2px);
}

/* =========================================================
   BARRA SUPERIOR
========================================================= */
.topbar {
  background: var(--color-gris-oscuro);
  color: #CBD5E1;
  font-size: 0.85rem;
  padding-block: 0.5rem;
}

.topbar .container-xl {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.topbar-contact {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.topbar-contact a {
  color: #CBD5E1;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition-fast);
}

.topbar-contact a:hover {
  color: var(--brand-light);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-links a {
  color: #CBD5E1;
  transition: color var(--transition-fast);
}

.social-links a:hover {
  color: var(--brand-light);
}

.theme-toggle {
  background: rgba(255,255,255,0.08);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: #CBD5E1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--brand-secondary);
  color: #fff;
}

/* =========================================================
   NAVBAR
========================================================= */
.main-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  transition: height var(--transition-base);
}

.main-header.scrolled .navbar {
  height: var(--header-height-scrolled);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-shield {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 700;
}

.brand-text span {
  font-size: 0.72rem;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

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

.nav-menu > li {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.75rem 1rem;
  font-weight: 500;
  font-size: 0.94rem;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--brand-primary);
  background: var(--bg-surface-alt);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Mega menú */
.has-mega {
  position: static;
}

.mega-menu {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--bg-surface);
  box-shadow: var(--shadow-lg);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: var(--space-md) 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: var(--z-mega-menu);
  border-top: 1px solid var(--border-color);
}

.has-mega:hover .mega-menu,
.has-mega:focus-within .mega-menu,
.has-mega.mega-open .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-menu .container-xl {
  display: contents;
}

.mega-col h6 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--brand-secondary);
  margin-bottom: 0.9rem;
}

.mega-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.mega-col a {
  color: var(--text-primary);
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.mega-col a:hover {
  color: var(--brand-primary);
  transform: translateX(4px);
}

.mega-col a i {
  color: var(--brand-light);
  width: 16px;
}

.mega-feature {
  background: linear-gradient(160deg, var(--brand-primary), var(--brand-secondary));
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  color: #fff;
}

.mega-feature h6 {
  color: rgba(255,255,255,0.8);
}

.mega-feature p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.85);
  margin: 0.5rem 0 1rem;
}

.navbar-toggler-custom {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--brand-primary);
  cursor: pointer;
}

/* =========================================================
   MENÚ MÓVIL OFF-CANVAS
   (Estilos base, independientes de media queries: la visibilidad
   del disparador se controla en responsive.css, pero el propio
   panel debe poder mostrarse siempre que el JS le añada "open".)
========================================================= */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.mobile-menu-overlay.show {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(340px, 85vw);
  background: var(--bg-surface);
  color: var(--text-primary);
  z-index: var(--z-overlay);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  padding: 1.5rem;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.mobile-menu-close {
  background: var(--bg-surface-alt);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.1rem;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-nav-list,
.mobile-nav-list li,
.mobile-submenu,
.mobile-submenu li {
  list-style: none !important;
}

.mobile-nav-list {
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
}

.mobile-nav-list > li {
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0.25rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-nav-link i {
  transition: transform var(--transition-fast);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.mobile-submenu {
  padding: 0 0 0.75rem 1rem;
  margin: 0;
  display: none;
}

.mobile-submenu.open {
  display: block;
}

.mobile-submenu li a {
  display: block;
  padding: 0.55rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.mobile-submenu li a:hover {
  color: var(--brand-primary);
}

/* =========================================================
   HERO
========================================================= */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,71,161,0.55) 0%, rgba(13,20,40,0.85) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(6px);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-title span {
  color: var(--color-azul-claro);
}

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.88);
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-dots {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.6rem;
  z-index: 3;
}

.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.hero-dots button.active {
  background: #fff;
  width: 28px;
  border-radius: var(--radius-pill);
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  right: 2.5rem;
  z-index: 3;
  color: rgba(255,255,255,0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-scroll span {
  writing-mode: vertical-rl;
}

.hero-scroll .line {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.5);
  position: relative;
  overflow: hidden;
}

.hero-scroll .line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  50% { top: 100%; }
  100% { top: 100%; }
}

/* =========================================================
   ACCESOS RÁPIDOS
========================================================= */
.quick-access {
  margin-top: -70px;
  position: relative;
  z-index: 5;
}

.quick-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  height: 100%;
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
}

.quick-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.quick-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--brand-primary), var(--brand-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  color: #fff;
  font-size: 1.5rem;
  transition: transform var(--transition-base);
}

.quick-card:hover .quick-icon {
  transform: rotate(-8deg) scale(1.05);
}

.quick-card h5 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.quick-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 0;
}

/* =========================================================
   BIENVENIDA
========================================================= */
.welcome-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.welcome-media img {
  border-radius: var(--radius-lg);
}

.welcome-badge {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--brand-primary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
  min-width: 150px;
}

.welcome-badge strong {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}

.welcome-badge span {
  font-size: 0.78rem;
  opacity: 0.85;
}

.welcome-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: grid;
  gap: 0.9rem;
}

.welcome-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.welcome-list i {
  color: var(--brand-secondary);
  margin-top: 0.2rem;
}

/* =========================================================
   CARDS: NOTICIAS / PROYECTOS
========================================================= */
.card-custom {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  height: 100%;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.card-custom:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-6px);
}

.card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card-custom:hover .card-img img {
  transform: scale(1.08);
}

.card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--brand-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
}

.card-body-custom {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

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

.card-body-custom h5 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.card-body-custom h5 a {
  transition: color var(--transition-fast);
}

.card-body-custom h5 a:hover {
  color: var(--brand-primary);
}

.card-body-custom p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  flex: 1;
}

.card-link {
  color: var(--brand-primary);
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.card-link i {
  transition: transform var(--transition-fast);
}

.card-link:hover i {
  transform: translateX(4px);
}

/* =========================================================
   OFERTA ACADÉMICA
========================================================= */
.academic-tabs {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.academic-tab {
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 2px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.academic-tab:hover {
  border-color: var(--brand-light);
}

.academic-tab.active {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: #fff;
}

.academic-panel {
  display: none;
}

.academic-panel.active {
  display: block;
}

.level-card {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  height: 100%;
  transition: all var(--transition-base);
}

.level-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.level-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-alt);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.level-card h6 {
  margin-bottom: 0.4rem;
}

.level-card p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin: 0;
}

/* =========================================================
   GALERÍA (preview en home)
========================================================= */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 160px;
  gap: 1rem;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.gallery-item.tall {
  grid-row: span 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(13,71,161,0.85), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-fast);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

/* =========================================================
   CIFRAS INSTITUCIONALES
========================================================= */
.stats-section {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
  top: -150px;
  right: -100px;
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-number {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
}

.stat-label {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.85);
  margin-top: 0.5rem;
}

/* =========================================================
   CONTACTO / MAPA
========================================================= */
.contact-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: var(--space-md);
  height: 100%;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.contact-info-item:last-child {
  border-bottom: none;
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-surface-alt);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-item h6 {
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.contact-info-item p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.form-control-custom {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-principal);
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.form-control-custom:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(25, 118, 210, 0.12);
}

.form-label-custom {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  display: block;
}

.map-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  line-height: 0;
}

/* =========================================================
   FOOTER
========================================================= */
.main-footer {
  background: var(--color-gris-oscuro);
  color: #B0BEC5;
  padding-top: var(--space-lg);
}

[data-theme="dark"] .main-footer {
  background: #060D14;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.footer-brand strong {
  color: #fff;
  font-size: 1.05rem;
}

.footer-col h6 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.82rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col a {
  color: #B0BEC5;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.footer-col a:hover {
  color: var(--brand-light);
  padding-left: 4px;
}

.footer-desc {
  font-size: 0.88rem;
  color: #90A4AE;
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--brand-secondary);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: var(--space-lg);
  padding-block: 1.5rem;
  font-size: 0.82rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-bottom a {
  color: #90A4AE;
}

.footer-bottom a:hover {
  color: var(--brand-light);
}

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: var(--z-header);
  border: none;
  cursor: pointer;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* =========================================================
   PAGE HEADER (páginas internas)
========================================================= */
.page-header {
  position: relative;
  padding: calc(var(--space-xl) + 2rem) 0 var(--space-lg);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #fff;
  overflow: hidden;
}

.page-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.08) 0, transparent 40%),
                     radial-gradient(circle at 80% 80%, rgba(255,255,255,0.08) 0, transparent 40%);
}

.breadcrumb-custom {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.breadcrumb-custom a {
  color: rgba(255,255,255,0.75);
}

.breadcrumb-custom a:hover {
  color: #fff;
}

.page-title {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  position: relative;
  z-index: 1;
}

.page-desc {
  max-width: 640px;
  color: rgba(255,255,255,0.85);
  margin-top: 0.75rem;
  position: relative;
  z-index: 1;
}

/* =========================================================
   UTILIDADES
========================================================= */
.text-brand { color: var(--brand-primary) !important; }
.bg-surface { background: var(--bg-surface) !important; }
.bg-surface-alt { background: var(--bg-surface-alt) !important; }
.rounded-custom { border-radius: var(--radius-lg) !important; }
.shadow-custom { box-shadow: var(--shadow-md) !important; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brand-primary);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 2000;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 3px solid var(--brand-light);
  outline-offset: 2px;
}