/* Navegación y estados compartidos por las tres pantallas administrativas de cursos. */

@layer features {
  .courses .navbar[hidden],
  .courses__admin-content[hidden],
  .courses__startup-status[hidden],
  .courses__startup-loader[hidden],
  .courses__startup-announcement[hidden],
  .courses__startup-error[hidden] {
    display: none;
  }

  .courses__startup-status {
    display: grid;
    place-items: center;
    width: 100%;
    min-height: clamp(12rem, 38vh, 22rem);
    overflow: hidden;
  }

  .courses__startup-loader {
    position: relative;
    width: 3.5rem;
    height: 3.5rem;
    border: 2px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
    border-top-color: var(--color-accent);
    border-right-color: var(--color-accent-dark);
    border-radius: var(--radius-pill);
    box-shadow: 0 0 1rem color-mix(in srgb, var(--color-accent) 18%, transparent);
    animation: courses-startup-loader-spin 1.1s linear infinite;
  }

  .courses__startup-loader::before {
    content: "";
    position: absolute;
    inset: 0.55rem;
    border: 1px solid color-mix(in srgb, var(--color-text) 16%, transparent);
    border-bottom-color: var(--color-accent);
    border-left-color: var(--color-accent-dark);
    border-radius: inherit;
  }

  .courses__startup-loader::after {
    content: "";
    position: absolute;
    inset: 50%;
    width: 0.4rem;
    height: 0.4rem;
    border-radius: var(--radius-pill);
    background: var(--color-accent);
    transform: translate(-50%, -50%);
  }

  .courses__startup-announcement {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .courses__startup-error {
    display: grid;
    justify-items: start;
    gap: 1rem;
    width: min(100%, 42rem);
  }

  .courses__startup-status--error {
    border-color: color-mix(in srgb, var(--color-error) 38%, transparent);
  }

  .courses__startup-message {
    color: var(--color-text-muted);
    line-height: 1.5;
  }

  .courses__startup-status--error .courses__startup-message {
    color: var(--color-error);
  }

  .courses__startup-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  @keyframes courses-startup-loader-spin {
    to {
      transform: rotate(1turn);
    }
  }

  .courses__noscript {
    margin-top: 1rem;
    padding: 1rem;
    color: var(--color-error);
    line-height: 1.5;
  }

  .courses__noscript a {
    color: var(--color-accent);
  }

  .courses-admin-nav {
    display: flex;
    width: fit-content;
    max-width: 100%;
    margin: 0 auto 2rem;
    padding: 0.25rem;
    border: var(--border-subtle);
    border-radius: var(--radius-pill);
    background: var(--color-background-deep);
  }

  .courses-admin-nav__link {
    padding: 0.55rem 1rem;
    border-radius: var(--radius-pill);
    color: var(--color-text-muted);
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
  }

  .courses-admin-nav__link:hover,
  .courses-admin-nav__link:focus-visible {
    color: var(--color-text);
  }

  .courses-admin-nav__link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  .courses-admin-nav__link--active {
    background: var(--color-field);
    color: var(--color-accent);
  }

  .courses__header-actions {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
  }

  .courses__form-heading {
    margin-bottom: 1.5rem;
    text-align: center;
  }

  .courses__route-status {
    display: grid;
    justify-items: start;
    gap: 1rem;
  }

  .courses__route-status[hidden],
  .courses__categories-status[hidden],
  .courses__admin-panel[hidden] {
    display: none;
  }

  .courses__route-status-message {
    color: var(--color-text-muted);
    line-height: 1.5;
  }

  .courses__categories-panel {
    margin-bottom: 2rem;
  }

  .courses__categories-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(min(300px, 100%), 0.8fr);
    align-items: end;
    gap: 1.5rem;
    margin-bottom: 1.25rem;
  }

  .courses__categories-heading .courses__subtitle {
    margin-bottom: 0.4rem;
  }

  .courses__categories-help,
  .courses__category-empty {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
  }

  .courses__cover-actions {
    display: flex;
    margin-top: 0.75rem;
  }

  .courses__cover-actions[hidden] {
    display: none;
  }

  .courses__cover-action {
    color: var(--color-error);
  }

  .courses__cover-action:disabled {
    cursor: not-allowed;
    opacity: 0.55;
  }

  .courses__cropper {
    display: grid;
    gap: 0.75rem;
    min-width: 0;
  }

  .courses__cropper[hidden],
  .courses__cropper-error[hidden] {
    display: none;
  }

  .courses__cropper-canvas {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-field);
    background: #071017;
    cursor: grab;
    touch-action: none;
  }

  .courses__cropper-canvas:focus-visible,
  .courses__cropper-zoom:focus-visible,
  .courses__cropper-error:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
  }

  .courses__cropper-controls {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.75rem;
  }

  .courses__cropper-zoom {
    width: 100%;
    accent-color: var(--color-accent);
  }

  .courses__cropper-error {
    color: var(--color-error);
    line-height: 1.5;
  }

  .courses__categories-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    border: var(--border-subtle);
    border-radius: var(--radius-field);
    color: var(--color-text-muted);
  }

  .courses__categories-status--migration {
    border-color: color-mix(in srgb, var(--color-accent) 38%, transparent);
    color: var(--color-accent);
  }

  .courses__categories-status--error {
    border-color: color-mix(in srgb, var(--color-error) 38%, transparent);
    color: var(--color-error);
  }

  .courses__categories-status-message {
    line-height: 1.45;
  }

  .courses__category-create {
    display: grid;
    gap: 0.35rem;
  }

  .courses__category-create-controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.6rem;
  }

  .courses__categories-list {
    display: grid;
    gap: 0.75rem;
    padding: 0;
    list-style: none;
  }

  .courses__category-item {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) auto;
    align-items: end;
    gap: 0.75rem;
    padding-top: 0.75rem;
    border-top: var(--border-subtle);
  }

  .courses__category-details {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.75rem;
  }

  .courses__category-status {
    padding: 0.2rem 0.55rem;
    border: var(--border-subtle);
    border-radius: var(--radius-pill);
    color: var(--color-text-muted);
    font-size: 0.72rem;
    white-space: nowrap;
  }

  .courses__category-status--inactive {
    color: var(--color-error);
  }

  .courses__category-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.5rem;
  }

  .courses__category-action {
    padding: 0.45rem 0.7rem;
    font-size: 0.75rem;
  }

  .courses__category-action--danger {
    color: var(--color-error);
  }

  .courses__categories-panel--busy .courses__categories-list {
    opacity: 0.65;
  }

  .courses__category-action:disabled {
    cursor: not-allowed;
    opacity: 0.55;
  }

  .courses__field-group:has(.field:disabled),
  .courses__dia:has(input:disabled) {
    opacity: 0.5;
    cursor: not-allowed;
  }

  @media (max-width: 720px) {
    .courses__categories-heading,
    .courses__category-item {
      grid-template-columns: minmax(0, 1fr);
      align-items: stretch;
    }

    .courses__category-actions {
      justify-content: flex-start;
    }
  }

  @media (max-width: 440px) {
    .courses__startup-actions {
      display: grid;
      width: 100%;
    }

    .courses-admin-nav {
      width: 100%;
    }

    .courses-admin-nav__link {
      flex: 1;
      text-align: center;
    }

    .courses__category-create-controls,
    .courses__category-details,
    .courses__categories-status {
      grid-template-columns: minmax(0, 1fr);
    }

    .courses__categories-status {
      display: grid;
      align-items: stretch;
    }

    .courses__category-status {
      justify-self: start;
    }

    .courses__cropper-controls {
      grid-template-columns: minmax(0, 1fr);
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .courses__startup-loader {
      animation: none;
      transform: rotate(45deg);
    }

    .courses-admin-nav__link {
      transition: none;
    }
  }
}