:root {
  --azul-principal: #1f56c3;
  --celeste: #7dd3fc;
  --naranja: #f97316;
  --negro: #000000;
  --blanco: #ffffff;
  --gris: #6b7280;
  --gris-claro: #f3f4f6;
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem var(--azul-principal);
}

/* Navbar */
.navbar-cga {
  background-color: var(--azul-principal);
  padding: 0.5rem 1rem;
}

.navbar-cga .navbar-brand {
  color: var(--blanco);
  font-weight: bold;
  font-size: 1.25rem;
}

.navbar-cga .navbar-brand:hover {
  color: var(--celeste);
}

.navbar-cga .nav-link {
  color: var(--blanco);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.navbar-cga .nav-link:hover {
  background-color: var(--naranja);
  color: var(--blanco);
}

.navbar-info {
  color: var(--blanco);
  font-size: 0.85rem;
}

.btn-salir {
  background-color: var(--naranja);
  color: var(--blanco) !important;
  border: none;
}

.btn-salir:hover {
  background-color: #ea580c;
  color: var(--blanco) !important;
}

/* Navbar toggler para mobile */
.navbar-cga .navbar-toggler {
  border-color: rgba(255,255,255,0.5);
}

.navbar-cga .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, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Responsive navbar */
@media (max-width: 991.98px) {
  .navbar-cga .navbar-collapse {
    background-color: var(--azul-principal);
    padding: 1rem;
    margin-top: 0.5rem;
    border-radius: 4px;
  }

  .navbar-cga .nav-link {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .navbar-info {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.5rem !important;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.2);
    margin-top: 0.5rem;
  }

  .navbar-info > div {
    text-align: left !important;
  }

  /* Fix para dropdowns en mobile - que no se salgan de la pantalla */
  .navbar-cga .dropdown-menu {
    position: static !important;
    transform: none !important;
    width: 100%;
    margin-top: 0;
    border: none;
    border-radius: 0;
    background-color: rgba(0, 0, 0, 0.15);
    box-shadow: none;
  }

  .navbar-cga .dropdown-menu.dropdown-menu-end {
    right: auto !important;
    left: 0 !important;
  }

  .navbar-cga .dropdown-item {
    color: rgba(255, 255, 255, 0.9);
    padding: 0.5rem 1.5rem;
  }

  .navbar-cga .dropdown-item:hover,
  .navbar-cga .dropdown-item:focus {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
  }

  .navbar-cga .dropdown-item.active {
    background-color: var(--naranja);
    color: white;
  }

  .navbar-cga .dropdown-header {
    color: rgba(255, 255, 255, 0.6);
  }

  .navbar-cga .dropdown-divider {
    border-color: rgba(255, 255, 255, 0.1);
  }
}

/* Pantallas muy pequeñas */
@media (max-width: 576px) {
  .navbar-cga {
    padding: 0.5rem;
  }

  .navbar-cga .navbar-brand {
    font-size: 1rem;
  }

  .navbar-info {
    font-size: 0.75rem;
  }
}

/* Footer */
.footer-cga {
  background-color: var(--gris-claro);
  color: var(--gris);
  padding: 0.25rem 0;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* Main content */
.content-wrapper {
  flex: 1;
}

/* ========================================
   Loading Overlay con Logo CGA
   ======================================== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(2px);
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.loading-logo {
  width: 450px;
  height: auto;
  animation: logoPulse 1.5s ease-in-out infinite;
}

@keyframes logoPulse {
  0% {
    opacity: 0.3;
    transform: scale(0.95);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  100% {
    opacity: 0.3;
    transform: scale(0.95);
  }
}

/* ========================================
   Dashboard KPI Cards
   ======================================== */
.kpi-card {
  border: none;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.kpi-card h2 {
  font-size: 2rem;
  font-weight: 700;
}

.kpi-icon {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.kpi-primary { border-left: 4px solid var(--azul-principal); }
.kpi-success { border-left: 4px solid #198754; }
.kpi-danger { border-left: 4px solid #dc3545; }
.kpi-warning { border-left: 4px solid #ffc107; }

/* Cards generales del dashboard */
.card {
  border: none;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.card-header {
  background-color: white;
  border-bottom: 1px solid #eee;
  font-weight: 600;
}

.kpi-secondary { border-left: 4px solid #6c757d; }
.kpi-info { border-left: 4px solid #0dcaf0; }

/* Dashboard Tabs */
.dashboard-tabs {
  border-bottom: 2px solid #dee2e6;
}

.dashboard-tabs .nav-link {
  border: none;
  color: var(--gris);
  padding: 0.75rem 1.25rem;
  font-weight: 500;
  border-radius: 0;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
}

.dashboard-tabs .nav-link:hover {
  color: var(--azul-principal);
  border-bottom-color: #dee2e6;
}

.dashboard-tabs .nav-link.active {
  color: var(--azul-principal);
  background-color: transparent;
  border-bottom-color: var(--azul-principal);
}

/* ========================================
   Dropdown Submenus (menus anidados)
   ======================================== */
.dropdown-submenu {
  position: relative;
}

.dropdown-submenu > .dropdown-menu {
  top: 0;
  left: 100%;
  margin-top: -1px;
  display: none;
}

.dropdown-submenu:hover > .dropdown-menu {
  display: block;
}

.dropdown-submenu > a.dropdown-toggle::after {
  display: inline-block;
  margin-left: auto;
  vertical-align: middle;
  content: "";
  border-top: 0.3em solid transparent;
  border-right: 0;
  border-bottom: 0.3em solid transparent;
  border-left: 0.3em solid;
  float: right;
  margin-top: 0.5em;
}

.dropdown-submenu > a.dropdown-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Responsive: en mobile los submenus se muestran debajo */
@media (max-width: 991.98px) {
  .dropdown-submenu > .dropdown-menu {
    position: static;
    left: 0;
    margin-left: 1rem;
    border: none;
    box-shadow: none;
    background-color: #f8f9fa;
  }

  .dropdown-submenu > a.dropdown-toggle::after {
    border-left: 0;
    border-top: 0.3em solid;
    border-right: 0.3em solid transparent;
    border-bottom: 0;
    float: none;
    margin-left: 0.5em;
  }
}