/* =============================================
   ESCUELA DE POSTGRADO USAC — main.css
   Estilos globales: variables, body, navbar, footer
   ============================================= */

/* ===== VARIABLES ===== */
:root {
  --azul:          #012463;
  --azul-hover:    #0236a0;
  --azul-oscuro:   #011d4e;
  --azul-profundo: #010f2e;
  --gris-fondo:    #f4f6fb;
  --radio:         10px;
  --sombra:        0 2px 10px rgba(1, 36, 99, 0.10);
  --sombra-hover:  0 6px 24px rgba(1, 36, 99, 0.18);
  --blanco:        #ffffff;
  --texto:         #1e293b;
  --texto-suave:   #64748b;
}

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

body {
  font-family: 'Montserrat', sans-serif;
  background-color: var(--gris-fondo);
  color: var(--texto);
  margin: 0;
  padding: 0;
}

/* ===== ENCABEZADO ===== */
.encabezado-wrap {
  width: 100%;
  background-color: var(--azul);
  overflow: hidden;
}

.encabezado-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== NAVBAR ===== */
.navbar-postgrado {
  background-color: var(--azul);
  border: none;
  border-bottom: 3px solid rgba(255,255,255,0.12);
  margin: 0;
  border-radius: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(1,36,99,0.35);
}

.navbar-postgrado .navbar-brand { display: none !important; }

/* Botón hamburguesa */
.navbar-postgrado .navbar-toggler {
  border: 2px solid rgba(255,255,255,0.35);
  border-radius: 6px;
  padding: 7px 10px;
  margin: 8px 15px;
  transition: background 0.2s, border-color 0.2s;
}

.navbar-postgrado .navbar-toggler:hover {
  background-color: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.6);
}

.navbar-postgrado .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255%2C255%2C255%2C0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Tamaño hamburguesa en móvil */
@media (max-width: 991px) {
  .navbar-postgrado .navbar-toggler {
    padding: 4px 7px;
    margin: 5px 10px;
  }

  .navbar-postgrado .navbar-toggler-icon {
    width: 18px;
    height: 18px;
  }
}

/* Items principales */
.navbar-postgrado .nav-link {
  color: rgba(255,255,255,0.85) !important;
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  font-weight: 600;
  padding: 16px 13px !important;
  letter-spacing: 0.3px;
  position: relative;
  transition: color 0.2s;
}

/* Línea animada debajo en hover — solo desktop */
.navbar-postgrado .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: rgba(255,255,255,0.7);
  border-radius: 2px 2px 0 0;
  transition: width 0.25s ease;
}

.navbar-postgrado .nav-item:hover > .nav-link::after,
.navbar-postgrado .nav-item.active > .nav-link::after {
  width: 70%;
}

.navbar-postgrado .nav-link:hover,
.navbar-postgrado .nav-item.active > .nav-link {
  color: #fff !important;
  background: transparent !important;
}

/* ===== DROPDOWN DESKTOP ===== */
.navbar-postgrado .dropdown-menu {
  background-color: var(--azul);
  border: 1px solid rgba(255,255,255,0.12);
  border-top: 3px solid rgba(255,255,255,0.5);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  padding: 8px 0;
  min-width: 220px;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.navbar-postgrado .dropdown-menu.show {
  opacity: 1;
  transform: translateY(0);
}

.navbar-postgrado .dropdown-item {
  color: rgba(255,255,255,0.78) !important;
  font-size: 12px;
  font-weight: 500;
  padding: 10px 20px;
  border-left: 3px solid transparent;
  transition: background 0.15s, color 0.15s, padding-left 0.15s;
}

.navbar-postgrado .dropdown-item::before {
  content: "›";
  font-size: 16px;
  opacity: 0.4;
  margin-right: 8px;
  display: inline-block;
  transition: opacity 0.15s, transform 0.15s;
}

.navbar-postgrado .dropdown-item:hover {
  background-color: rgba(255,255,255,0.10) !important;
  color: #fff !important;
  padding-left: 26px !important;
  border-left-color: rgba(255,255,255,0.5);
}

.navbar-postgrado .dropdown-item + .dropdown-item {
  border-top: 1px solid rgba(255,255,255,0.05);
}

/* ===== NAVBAR MÓVIL ===== */
@media (max-width: 991px) {

  .navbar-postgrado .navbar-collapse {
    background-color: var(--azul-oscuro);
    border-top: 1px solid rgba(255,255,255,0.10);
    padding: 6px 0 16px;
    max-height: 80vh;
    overflow-y: auto;
  }

  /* Sin línea animada en móvil */
  .navbar-postgrado .nav-link::after { display: none; }

  .navbar-postgrado .nav-link {
    font-size: 13px;
    padding: 13px 20px !important;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: background 0.2s, padding-left 0.2s;
  }

  .navbar-postgrado .nav-link:hover,
  .navbar-postgrado .nav-item.show > .nav-link {
    background-color: rgba(255,255,255,0.08) !important;
    padding-left: 26px !important;
    color: #fff !important;
  }

  /* Caret giratorio */
  .navbar-postgrado .nav-item.dropdown > .nav-link .caret-icon {
    float: right;
    margin-top: 3px;
    transition: transform 0.3s;
  }

  .navbar-postgrado .nav-item.dropdown.show > .nav-link .caret-icon {
    transform: rotate(180deg);
  }

  /* Dropdown móvil — sin animación desktop */
  .navbar-postgrado .dropdown-menu {
    background-color: var(--azul-profundo) !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .navbar-postgrado .dropdown-item {
    padding: 11px 20px 11px 44px !important;
    font-size: 12px !important;
    border-bottom: 1px solid rgba(255,255,255,0.04) !important;
    border-left: none !important;
  }

  .navbar-postgrado .dropdown-item:hover {
    padding-left: 52px !important;
    background-color: rgba(255,255,255,0.07) !important;
  }
}

/* ===== FOOTER ===== */
.footer-postgrado {
  background-color: var(--azul);
  border-top: 3px solid rgba(255,255,255,0.12);
  margin-top: 40px;
  padding: 24px 16px;
}

.footer-contenido {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-texto {
  color: rgba(255,255,255,0.85);
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  margin: 0;
  line-height: 1.6;
}

.footer-texto span {
  color: rgba(255,255,255,0.55);
  font-size: 12px;
}

.footer-redes {
  display: flex;
  gap: 16px;
}

.footer-redes a {
  color: rgba(255,255,255,0.6);
  font-size: 22px;
  transition: color 0.2s, transform 0.2s;
}

.footer-redes a:hover {
  color: #fff;
  transform: scale(1.15);
}

@media (max-width: 767px) {
  .footer-contenido {
    flex-direction: column;
    text-align: center;
  }
}

/* =============================================
   DOCUMENTOS COMUNES — disponible en todas las páginas
   ============================================= */

.docs-comunes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

@media (max-width: 575px) {
  .docs-comunes-grid { grid-template-columns: 1fr; }
}

.doc-comun-card {
  background: #fff;
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border-top: 4px solid var(--azul);
}

.doc-comun-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sombra-hover);
}

.doc-comun-icono {
  width: 60px;
  height: 60px;
  background: var(--gris-fondo);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: background 0.2s;
}

.doc-comun-card:hover .doc-comun-icono { background: var(--azul); }

.doc-comun-icono i {
  font-size: 26px;
  color: var(--azul);
  transition: color 0.2s;
}

.doc-comun-card:hover .doc-comun-icono i { color: #fff; }

.doc-comun-titulo {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--texto);
  margin-bottom: 20px;
  flex: 1;
  line-height: 1.5;
}

.btn-descargar-comun {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--azul);
  color: #fff !important;
  text-decoration: none !important;
  padding: 9px 20px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  font-family: 'Montserrat', sans-serif;
  transition: background 0.2s, transform 0.15s;
  width: 100%;
  justify-content: center;
}

.btn-descargar-comun:hover {
  background-color: var(--azul-hover);
  transform: translateY(-1px);
}