/*
 * Alerts (flash messages and form errors)
 * <div class="alert alert--success">Saved!</div>
 */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: var(--border-width) solid;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);

  svg {
    width: var(--icon-md);
    height: var(--icon-md);
    flex-shrink: 0;
  }
}

.alert--success {
  background: var(--color-success-subtle);
  border-color: var(--color-success-border);
  color: var(--color-success-text);
}

.alert--warning {
  background: var(--color-warning-subtle);
  border-color: var(--color-warning-border);
  color: var(--color-warning-text);
}

.alert--danger {
  background: var(--color-danger-subtle);
  border-color: var(--color-danger-border);
  color: var(--color-danger-text);
}

.alert--info {
  background: var(--color-info-subtle);
  border-color: var(--color-info-border);
  color: var(--color-info-text);
}

/*
 * Flash messages (shared/_flash): fixed toasts at the top centre, above everything,
 * so showing or hiding one never pushes the page content around.
 * flash_controller.js removes each one after 5 seconds or on click.
 */
.flash-stack {
  position: fixed;
  top: var(--space-4);
  left: 50%;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: min(32rem, calc(100vw - var(--space-8)));
  translate: -50% 0;
  /* Clicks between/around the toasts reach the page underneath */
  pointer-events: none;
}

.alert--toast {
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  pointer-events: auto;
}

/* Enter: fade in while sliding down from the top */
@keyframes toast-in {
  from {
    opacity: 0;
    translate: 0 -0.75rem;
  }
}

/* Exit (class added by flash_controller.js): fade out while sliding back up */
@keyframes toast-out {
  to {
    opacity: 0;
    translate: 0 -0.75rem;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .alert--toast {
    animation: toast-in var(--duration-slow) var(--ease-out);
  }

  .alert--toast.alert--leaving {
    animation: toast-out var(--duration-normal) var(--ease-in-out) forwards;
  }
}