/**
 * Atelier — Messages/toasts (C9). Two contexts:
 * - .atl-message: an inline, persistent banner (success/error/warning/info)
 *   for page-level state, e.g. "Item added to cart" above a form.
 * - .atl-toast-stack + .atl-toast: transient, auto-dismissing notifications
 *   stacked in the corner, for actions that don't reload the page.
 * Both share the same state-color mapping to --atl-success/error/warning
 * and a neutral "info" tone using --atl-accent, so a success message here
 * always means the same token as a success badge elsewhere in the theme.
 */
.atl-message {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 18px;
  font-size: 13.5px;
  border: 1px solid;
}
.atl-message-icon { font-size: 15px; flex-shrink: 0; }
.atl-message--success { border-color: var(--atl-success); color: var(--atl-success); background: color-mix(in oklab, var(--atl-success) 6%, var(--atl-surface)); }
.atl-message--error { border-color: var(--atl-error); color: var(--atl-error); background: color-mix(in oklab, var(--atl-error) 6%, var(--atl-surface)); }
.atl-message--warning { border-color: var(--atl-warning); color: var(--atl-warning); background: color-mix(in oklab, var(--atl-warning) 6%, var(--atl-surface)); }
.atl-message--info { border-color: var(--atl-accent); color: var(--atl-accent); background: var(--atl-accent-tint); }
.atl-message a { color: inherit; text-decoration: underline; }

.atl-toast-stack {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 340px;
}
.atl-toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  background: var(--atl-surface);
  border: 1px solid var(--atl-border-strong);
  border-left: 3px solid var(--atl-text);
  font-size: 13px;
  box-shadow: 0 4px 16px var(--atl-shadow-tint);
}
.atl-toast--success { border-left-color: var(--atl-success); }
.atl-toast--error { border-left-color: var(--atl-error); }
.atl-toast--warning { border-left-color: var(--atl-warning); }
.atl-toast-body { flex: 1; color: var(--atl-text); }
.atl-toast-close {
  background: none;
  border: none;
  color: var(--atl-text-subtle);
  cursor: pointer;
  font-size: 16px;
  font-family: inherit;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
}
.atl-toast-close:focus-visible { outline: 2px solid var(--atl-focus-ring); outline-offset: 1px; }

@media (max-width: 767px) {
  .atl-message { flex-wrap: wrap; }
  .atl-toast-stack { left: 16px; right: 16px; top: 16px; max-width: none; }
}