/* ============================================================
   ScienceuP — Login / Registro
   Estilos exclusivos de la pantalla de autenticación.
   El layout es completamente diferente al resto del sitio.
   ============================================================ */

/* Fondo oscuro con degradado */
body.login-page {
  background: linear-gradient(135deg, #0a1628 0%, #002f6c 55%, #1a4080 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Ocultar header/footer heredados del global */
body.login-page #site-header,
body.login-page #site-footer { display: none; }

/* Decoración de fondo */
.login-bg-deco {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
.login-bg-deco::before {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122,154,191,0.3) 0%, transparent 70%);
  top: -250px; right: -200px;
}
.login-bg-deco::after {
  content: '';
  position: absolute;
  width: 450px; height: 450px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242,121,0,0.2) 0%, transparent 70%);
  bottom: -150px; left: -100px;
}

/* Wrapper centrador */
.login-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

/* Tarjeta central */
.login-card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: 0 30px 60px -12px rgb(0 0 0 / 0.5);
  width: 100%;
  max-width: 460px;
  padding: var(--space-10);
  animation: cardIn 0.4s ease;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Logo dentro del card */
.login-logo {
  text-align: center;
  margin-bottom: var(--space-8);
}
.login-logo .logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-3xl);
  color: var(--color-primary);
  display: block;
}
.login-logo .logo-text span { color: #f27900; }
.login-logo p {
  color: var(--color-muted);
  font-size: var(--text-sm);
  margin-top: var(--space-1);
}

/* Tabs Login / Registro */
.auth-tabs {
  display: flex;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 4px;
  margin-bottom: var(--space-8);
  gap: 4px;
}
.auth-tab {
  flex: 1;
  padding: 0.625rem var(--space-4);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-muted);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  border: none;
  background: none;
}
.auth-tab.active {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* Paneles */
.auth-panel          { display: none; }
.auth-panel.active   { display: block; }

.auth-panel h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-1);
}
.panel-sub {
  color: var(--color-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

/* Input con toggle contraseña */
.input-password-wrap { position: relative; }
.input-password-wrap .form-control { padding-right: 3rem; }
.password-toggle {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-muted);
  font-size: var(--text-lg);
  padding: 0;
  line-height: 1;
  transition: color var(--transition);
}
.password-toggle:hover { color: var(--color-primary); }

/* Enlace "olvidé contraseña" */
.forgot-link {
  font-size: var(--text-xs);
  color: var(--color-primary);
  float: right;
  transition: opacity var(--transition);
}
.forgot-link:hover { opacity: 0.7; }

/* Botón submit */
.btn-auth {
  width: 100%;
  padding: 0.875rem;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.btn-auth:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-auth:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Spinner de carga */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}
.btn-auth.loading .spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer del card */
.login-card-footer {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-muted);
  line-height: 1.6;
}
.login-card-footer a {
  color: var(--color-primary);
  font-weight: 500;
}
.login-card-footer a:hover { text-decoration: underline; }

/* Volver al inicio */
.back-link {
  display: block;
  text-align: center;
  margin-top: var(--space-5);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  position: relative;
  z-index: 1;
  transition: color var(--transition);
}
.back-link:hover { color: var(--color-white); }

/* Google button */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-5) 0 var(--space-4);
  color: rgba(255,255,255,0.35);
  font-size: var(--text-sm);
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.15);
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: #fff;
  color: #3c4043;
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
}
.btn-google:hover  { background: #f5f5f5; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.btn-google:active { background: #ebebeb; }
.btn-google:disabled { opacity: 0.6; cursor: not-allowed; }

/* Responsive */
@media (max-width: 480px) {
  .login-card { padding: var(--space-6); }
  .login-logo .logo-text { font-size: var(--text-2xl); }
}