/* ========== toast.css：轻提示 ========== */
.toast-container {
  position: fixed;
  top: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  min-width: 280px;
  max-width: 640px;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-base);
  color: var(--color-text);
  opacity: 0;
  transform: translateY(-12px);
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}
.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.toast.is-leaving {
  opacity: 0;
  transform: translateY(-12px);
}

.toast__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 16px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-on-primary);
  flex-shrink: 0;
}

.toast--success { border-left: 4px solid var(--color-success); }
.toast--success .toast__icon { background-color: var(--color-success); }

.toast--error { border-left: 4px solid var(--color-danger); }
.toast--error .toast__icon { background-color: var(--color-danger); }

.toast--warning { border-left: 4px solid var(--color-warning); }
.toast--warning .toast__icon { background-color: var(--color-warning); }

.toast--info { border-left: 4px solid var(--color-info); }
.toast--info .toast__icon { background-color: var(--color-info); }

.toast__msg { flex: 1; word-break: break-word; }