/* Toast 系统 */
.toast-region {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
  max-width: calc(100vw - 48px);
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 380px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-overlay);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  color: var(--text-primary);
  animation: toastIn 280ms var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.toast.toast-leaving {
  animation: toastOut 180ms var(--ease-out) forwards;
}

.toast-success { border-left-color: var(--success); }
.toast-warning { border-left-color: var(--warning); }
.toast-error   { border-left-color: var(--danger); }
.toast-info    { border-left-color: var(--info); }

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--accent-primary);
}
.toast-success .toast-icon { color: var(--success); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-error   .toast-icon { color: var(--danger); }
.toast-info    .toast-icon { color: var(--info); }

.toast-body {
  flex: 1;
  font-size: 13px;
  line-height: 1.5;
  word-break: break-word;
}

.toast-action {
  margin-left: 6px;
  color: var(--accent-cyan);
  font-weight: 600;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}
.toast-action:hover { color: var(--accent-cyan-2); }

.toast-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--text-tertiary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  font-size: 16px;
  line-height: 1;
}
.toast-close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, .06);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(20px); }
}

@media (max-width: 640px) {
  .toast-region { right: var(--space-4); top: var(--space-4); }
  .toast { min-width: 0; max-width: 100%; }
}