/* ==========================================================================
   Feedback — meters, alerts, toasts, the module overlay and the spinner.
   ========================================================================== */

@keyframes zr-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes zr-shimmer {
  to {
    background-position: -200% 0;
  }
}

@layer components {
  /* meter / progress */
  .zr-meter {
    height: 5px;
    border-radius: var(--zr-r-full);
    background: var(--zr-surface-sunken);
    overflow: hidden;
  }
  .zr-meter__fill {
    height: 100%;
    border-radius: inherit;
    background: var(--zr-brand);
    transition: width 300ms var(--zr-ease);
  }
  .zr-meter__fill--ok {
    background: var(--zr-ok);
  }
  .zr-meter__fill--warn {
    background: var(--zr-warn);
  }
  .zr-meter__fill--danger {
    background: var(--zr-danger);
  }
  .zr-meter--stacked {
    display: flex;
    height: 8px;
  }
  .zr-meter--stacked > span {
    height: 100%;
  }

  /* alert */
  .zr-alert {
    display: flex;
    gap: var(--zr-2);
    padding: var(--zr-2) var(--zr-3);
    border-radius: var(--zr-r-md);
    border: 1px solid;
    font-size: var(--zr-fs-base);
  }
  .zr-alert__body {
    min-width: 0;
  }
  .zr-alert__title {
    font-weight: 600;
  }
  .zr-alert--info {
    background: var(--zr-info-soft);
    border-color: color-mix(in srgb, var(--zr-info) 26%, transparent);
    color: var(--zr-info);
  }
  .zr-alert--warn {
    background: var(--zr-warn-soft);
    border-color: color-mix(in srgb, var(--zr-warn) 26%, transparent);
    color: var(--zr-warn);
  }
  .zr-alert--danger {
    background: var(--zr-danger-soft);
    border-color: color-mix(in srgb, var(--zr-danger) 26%, transparent);
    color: var(--zr-danger);
  }
  .zr-alert--ok {
    background: var(--zr-ok-soft);
    border-color: color-mix(in srgb, var(--zr-ok) 26%, transparent);
    color: var(--zr-ok);
  }
  .zr-alert p {
    color: color-mix(in srgb, currentColor 82%, var(--zr-text));
  }

  /* toast */
  .zr-toasts {
    position: fixed;
    right: var(--zr-4);
    bottom: var(--zr-4);
    z-index: 60;
    display: flex;
    flex-direction: column;
    gap: var(--zr-2);
    max-width: 320px;
  }
  .zr-toast {
    display: flex;
    gap: var(--zr-2);
    padding: var(--zr-2) var(--zr-3);
    border-radius: var(--zr-r-md);
    background: var(--zr-surface);
    border: 1px solid var(--zr-line);
    border-left-width: 3px;
    box-shadow: var(--zr-shadow-md);
    font-size: var(--zr-fs-base);
    cursor: pointer;
  }
  .zr-toast .zr-icon {
    flex: none;
    margin-top: 1px;
  }
  .zr-toast--ok {
    border-left-color: var(--zr-ok);
  }
  .zr-toast--ok .zr-icon {
    color: var(--zr-ok);
  }
  .zr-toast--danger {
    border-left-color: var(--zr-danger);
  }
  .zr-toast--danger .zr-icon {
    color: var(--zr-danger);
  }
  .zr-toast--warn {
    border-left-color: var(--zr-warn);
  }
  .zr-toast--warn .zr-icon {
    color: var(--zr-warn);
  }
  .zr-toast--info {
    border-left-color: var(--zr-info);
  }
  .zr-toast--info .zr-icon {
    color: var(--zr-info);
  }

  /* loading overlay covering a module while it refreshes */
  .zr-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--zr-surface) 78%, transparent);
    border-radius: inherit;
  }

  /* spinner */
  .zr-spinner {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--zr-line-strong);
    border-top-color: var(--zr-brand);
    animation: zr-spin 0.7s linear infinite;
    flex: none;
  }
  .zr-spinner--lg {
    width: 28px;
    height: 28px;
    border-width: 3px;
  }

  /* skeleton — a placeholder shaped like the thing it stands in for. A spinner
     says "something is happening"; this says "a number goes here", which is
     what a page full of figures needs while they are in flight. The sheen
     itself is --zr-skeleton-bg in tokens.css, so the dashboard's loading state
     can paint existing value slots with the same one. */
  .zr-skeleton {
    background: var(--zr-skeleton-bg) 0 0 / 200% 100%;
    border-radius: var(--zr-r-sm);
    animation: zr-shimmer 1.4s linear infinite;
    /* Text inside stays as the accessible label but stops being drawn, so the
       bar takes the width the real value will need. */
    color: transparent;
    user-select: none;
  }

  @media (prefers-reduced-motion: reduce) {
    .zr-spinner {
      animation-duration: 2s;
    }
    /* The sheen is decoration; the placeholder shape carries the meaning. */
    .zr-skeleton {
      animation: none;
    }
  }

  @media (max-width: 860px) {
    .zr-toasts {
      left: var(--zr-3);
      right: var(--zr-3);
      bottom: calc(var(--zr-tabbar-h) + var(--zr-2));
      max-width: none;
    }
  }
}