/* ================================================================
   AUTH — Pantalla de Login / Registro
   El Gran Planificador Educativo
   ================================================================ */

/* Overlay que bloquea la app hasta que el usuario inicie sesión */
#auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: linear-gradient(135deg, #0D1B2A 0%, #1A237E 60%, #0D47A1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

#auth-overlay.hidden {
  display: none;
}

/* Tarjeta central del login */
.auth-card {
  background: #fff;
  border-radius: 20px;
  padding: 36px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
  animation: authFadeIn 0.4s ease;
}

@keyframes authFadeIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Logo + nombre */
.auth-header {
  text-align: center;
  margin-bottom: 28px;
}

.auth-logo {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  margin-bottom: 12px;
}

.auth-app-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #1565C0;
  line-height: 1.2;
}

.auth-app-sub {
  font-size: 0.78rem;
  color: #78909C;
  margin-top: 4px;
}

/* Tabs Entrar / Registrarse */
.auth-tabs {
  display: flex;
  border-bottom: 2px solid #E0E0E0;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  padding: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #9E9E9E;
  cursor: pointer;
  border: none;
  background: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: color 0.2s, border-color 0.2s;
}

.auth-tab.activo {
  color: #1565C0;
  border-bottom-color: #1565C0;
}

/* Formulario */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.auth-field label {
  font-size: 0.78rem;
  font-weight: 600;
  color: #424242;
}

.auth-field input {
  border: 1.5px solid #CFD8DC;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #FAFAFA;
}

.auth-field input:focus {
  border-color: #1565C0;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
}

/* Mensaje de error */
.auth-error {
  font-size: 0.8rem;
  color: #C62828;
  background: #FFEBEE;
  border-radius: 8px;
  padding: 8px 12px;
  display: none;
}

.auth-error.visible {
  display: block;
}

/* Botón principal */
.auth-btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  background: linear-gradient(135deg, #1565C0, #1976D2);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  font-family: inherit;
}

.auth-btn-primary:hover  { opacity: 0.9; }
.auth-btn-primary:active { transform: scale(0.98); }
.auth-btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

/* Separador */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #BDBDBD;
  font-size: 0.78rem;
  margin: 4px 0;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #E0E0E0;
}

/* Botón Google */
.auth-btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px;
  background: #fff;
  color: #3C4043;
  border: 1.5px solid #DADCE0;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.auth-btn-google:hover {
  background: #F8F9FA;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.auth-btn-google svg {
  flex-shrink: 0;
}

/* Loading spinner dentro del botón */
.auth-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}

.auth-spinner.visible { display: inline-block; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Toast de migración */
.auth-migration-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #1B5E20;
  color: #fff;
  border-radius: 12px;
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  z-index: 99999;
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(16px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Botón de usuario en el header ── */
.btn-user-account {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s;
}

.btn-user-account:hover {
  background: rgba(255, 255, 255, 0.22);
}

.btn-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1565C0, #7E57C2);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.btn-user-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Menú desplegable del usuario */
.user-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #fff;
  border: 1.5px solid #E0E0E0;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  min-width: 200px;
  z-index: 1000;
  overflow: hidden;
  display: none;
}

.user-menu.visible { display: block; }

.user-menu-email {
  padding: 12px 16px;
  font-size: 0.78rem;
  color: #616161;
  border-bottom: 1px solid #F0F0F0;
  word-break: break-all;
}

.user-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #424242;
  cursor: pointer;
  transition: background 0.15s;
  border: none;
  background: none;
  width: 100%;
  font-family: inherit;
}

.user-menu-item:hover { background: #F5F5F5; }

.user-menu-item.danger { color: #C62828; }
.user-menu-item.danger:hover { background: #FFEBEE; }

.btn-user-wrap {
  position: relative;
}

/* Dark mode */
body.dark-mode .auth-card { background: #1A1D2E; }
body.dark-mode .auth-app-name { color: #90CAF9; }
body.dark-mode .auth-app-sub { color: #78909C; }
body.dark-mode .auth-tab { color: #78909C; }
body.dark-mode .auth-tab.activo { color: #90CAF9; border-bottom-color: #90CAF9; }
body.dark-mode .auth-field label { color: #CFD8DC; }
body.dark-mode .auth-field input { background: #252836; border-color: #455A64; color: #E0E0E0; }
body.dark-mode .auth-field input:focus { border-color: #64B5F6; background: #1A1D2E; }
body.dark-mode .auth-btn-google { background: #252836; border-color: #455A64; color: #E0E0E0; }
body.dark-mode .auth-btn-google:hover { background: #2E3246; }
body.dark-mode .user-menu { background: #1E2130; border-color: #37474F; }
body.dark-mode .user-menu-email { color: #90A4AE; border-bottom-color: #2A2D3E; }
body.dark-mode .user-menu-item { color: #CFD8DC; }
body.dark-mode .user-menu-item:hover { background: #252836; }
body.dark-mode .user-menu-item.danger { color: #EF9A9A; }
body.dark-mode .user-menu-item.danger:hover { background: #3B1A1A; }
body.dark-mode .btn-user-account { background: rgba(100,181,246,0.1); border-color: rgba(100,181,246,0.25); }
body.dark-mode .btn-user-name { color: #90CAF9; }

/* ── Mi Cuenta ── */
.cuenta-seccion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cuenta-seccion-titulo {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.88rem;
  font-weight: 700;
  color: #1565C0;
  margin-bottom: 2px;
}

.cuenta-seccion-titulo .material-icons {
  font-size: 18px;
}

.auth-error.ok {
  color: #1B5E20;
  background: #E8F5E9;
  border: none;
}

body.dark-mode .cuenta-seccion-titulo { color: #90CAF9; }
body.dark-mode .auth-error.ok { color: #A5D6A7; background: #1B2E1B; }