@layer tokens, reset, base, layout, components, variants;

@layer tokens {
  :root {
    --card-intrinsic-height: 450px;
    --card-bg: var(--color-surface);
    --card-border: var(--color-border-subtle);
    --card-hover-opacity: 0.92;
    --card-hover-scale: 1.015;
    --card-aspect-ratio: 1 / 1;

    --meta-text-transform: none;

    --lightbox-max-width: 1600px;
    --lightbox-chrome: 14.5rem;
    --lightbox-max-frame-height: max(120px, min(74dvh, calc(94dvh - var(--lightbox-chrome))));
    --lightbox-frame-width: min(88vw, 760px, var(--lightbox-max-frame-height));
  }
}

@layer layout {
  h2 {
    font-size: 1.3rem;
    margin-top: 2em;
    margin-bottom: 1em;
  }
}

@layer components {
  /* Series Statement & Metadata */
  .statement {
    margin-bottom: 4em;
  }

  .statement-meta,
  .statement-meta a {
    font-size: 0.95rem;
    color: var(--color-meta);
  }

  .external-link {
    display: inline-flex;
    align-items: center;
    gap: 0.2em;
  }

  .controls-hint {
    max-width: var(--measure);
    background: var(--color-surface);
    border-left: 2px solid var(--color-fg);
    padding: 1em 1.25em;
    font-size: 0.82rem;
    line-height: 1.65;
    margin: 1.75em 0;
    color: #333;
  }

  .controls-hint code {
    font-weight: 600;
    color: var(--color-fg);
    background: var(--color-surface-alt);
    padding: 0.1em 0.35em;
    border-radius: 2px;
  }

  /* Project Artwork Gallery */
  .gallery {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 2.5em 1.5em;
    margin-top: 2.5em;
  }

  .artwork-card {
    margin: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
  }

  .artwork-card.is-hidden {
    display: none !important;
  }

  .artwork-card.deferred {
    content-visibility: auto;
    contain-intrinsic-size: auto none auto var(--card-intrinsic-height);
  }

  .artwork-link {
    display: block;
    text-decoration: none;
    background: var(--card-bg);
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--card-border);
  }

  .artwork-link img {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 0.2s ease, transform 0.25s ease;
  }

  .artwork-link:hover img {
    opacity: var(--card-hover-opacity);
    transform: scale(var(--card-hover-scale));
  }

  .artwork-caption {
    margin-top: 0.85em;
    font-size: 0.85rem;
    line-height: 1.45;
    display: flex;
    flex-direction: column;
    gap: 0.2em;
  }

  .artwork-title {
    color: var(--color-fg);
    font-size: 0.95rem;
  }

  .artwork-meta {
    color: var(--color-muted);
    font-size: 0.8rem;
    text-transform: var(--meta-text-transform);
  }

  @media (min-width: 768px) {
    .artwork-card {
      flex-basis: calc(50% - 0.75em);
      max-width: calc(50% - 0.75em);
    }
  }

  @media (min-width: 992px) {
    .artwork-card {
      flex-basis: calc(33.333% - 1em);
      max-width: calc(33.333% - 1em);
    }
  }

  /* Signature loackme placeholder asterisk */
  .gallery > .gallery-placeholder {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    color: var(--color-fg);
    flex-grow: 1;
    flex-basis: 0;
    max-width: none;
    min-height: 200px;
  }

  /* Lazy loading scroll sentinel */
  .scroll-sentinel {
    width: 100%;
    height: 40px;
    margin-top: 1em;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-subtle);
    font-size: 0.85rem;
  }

  .loading-dots {
    display: inline-block;
    letter-spacing: 0.2em;
  }

  /* Lightbox Modal */
  dialog.lightbox {
    border: 1px solid var(--color-fg);
    padding: 1.5em;
    max-width: min(94vw, var(--lightbox-max-width));
    max-height: 94dvh;
    background: var(--color-bg);
    color: var(--color-fg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overscroll-behavior: contain;
  }

  dialog.lightbox::backdrop {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    overflow: hidden;
    overscroll-behavior: contain;
  }

  .lightbox-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2em;
  }

  .lightbox-media {
    max-width: 100%;
    max-height: var(--lightbox-max-frame-height);
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .lightbox-media > img {
    max-width: 100%;
    max-height: var(--lightbox-max-frame-height);
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    transition: opacity 0.15s ease;
  }

  /* Live iframe lightbox frame & preview crossfade */
  .lightbox-media:has(.lightbox-frame-wrapper) {
    width: 100%;
    max-height: none;
  }

  .lightbox-frame-wrapper {
    position: relative;
    width: var(--lightbox-frame-width);
    aspect-ratio: var(--card-aspect-ratio);
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    transition: background-color 0.25s ease;
  }

  .lightbox-frame-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    background: transparent;
  }

  .lightbox-frame-wrapper:where(:fullscreen, :-webkit-full-screen, .is-pseudo-fullscreen) {
    width: 100% !important;
    height: 100% !important;
    max-width: 100% !important;
    max-height: 100% !important;
    aspect-ratio: auto !important;
    background: #000 !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
  }

  .lightbox-frame-wrapper.is-pseudo-fullscreen {
    position: fixed !important;
    inset: 0 !important;
    z-index: 999999 !important;
  }

  .lightbox-frame-wrapper:where(:fullscreen, :-webkit-full-screen) {
    position: relative !important;
  }

  .lightbox-frame-wrapper:where(:fullscreen, :-webkit-full-screen, .is-pseudo-fullscreen) iframe {
    width: 100% !important;
    height: 100% !important;
    border: none !important;
    display: block !important;
    background: #000 !important;
  }

  .exit-fullscreen-btn {
    display: none;
  }

  .lightbox-frame-wrapper:where(:fullscreen, :-webkit-full-screen, .is-pseudo-fullscreen) .exit-fullscreen-btn {
    display: inline-flex;
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 1000000;
    background: rgba(0, 0, 0, 0.75);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.7);
    padding: 0.45em 0.85em;
    font-size: 0.85rem;
    cursor: pointer;
    align-items: center;
    gap: 0.4em;
    text-decoration: none;
    white-space: nowrap;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  }

  .lightbox-frame-wrapper:where(:fullscreen, :-webkit-full-screen, .is-pseudo-fullscreen) .exit-fullscreen-btn:hover {
    background: #fff;
    color: #000;
    border-color: #fff;
  }

  .exit-fullscreen-btn:focus:not(:focus-visible) {
    outline: none;
  }

  .exit-fullscreen-btn:focus-visible {
    outline: 2px solid #fff;
  }

  #lightbox-iframe:where(:fullscreen, :-webkit-full-screen) {
    width: 100vw;
    height: 100vh;
    border: none;
    background: #000;
  }

  .lightbox-preview {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
    background: #000;
  }

  .lightbox-preview.no-transition {
    transition: none !important;
  }

  .lightbox-preview.is-loaded {
    opacity: 0;
    visibility: hidden;
  }

  .lightbox-bar {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1em;
    font-size: 0.85rem;
    border-top: 1px solid var(--color-surface-alt);
    padding-top: 1em;
  }

  .lightbox-info {
    display: flex;
    flex-direction: column;
    gap: 0.2em;
  }

  .lightbox-title {
    font-weight: 500;
    font-size: 0.95rem;
  }

  .lightbox-details {
    color: var(--color-subtle);
    font-size: 0.8rem;
    text-transform: var(--meta-text-transform);
  }

  .lightbox-controls {
    display: flex;
    align-items: center;
    gap: 0.8em;
  }

  .lightbox-btn {
    background: var(--color-bg);
    border: 1px solid var(--color-fg);
    color: var(--color-fg);
    font-size: 0.85rem;
    padding: 0.3em 0.8em;
    text-decoration: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease;
  }

  .lightbox-btn:hover:not(:disabled, [aria-disabled="true"]) {
    background: var(--color-fg);
    color: var(--color-bg);
  }

  .lightbox-btn:where(:disabled, [aria-disabled="true"]) {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
  }

  .lightbox-close-btn {
    border: none;
    background: none;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.2em 0.5em;
    color: var(--color-fg);
  }

  .lightbox-close-btn:focus:not(:focus-visible) {
    outline: none;
  }

  .lightbox-close-btn:focus-visible {
    outline: 1px solid var(--color-fg);
  }

  .lightbox-close-btn:hover {
    text-decoration: underline;
  }

  @media (max-width: 767px) {
    :root {
      --lightbox-chrome: 18.5rem;
    }

    dialog.lightbox {
      padding: 1.1em;
      max-width: 95vw;
      width: 95vw;
    }

    .lightbox-content {
      gap: 0.9em;
      width: 100%;
    }

    .lightbox-frame-wrapper {
      width: min(100%, var(--lightbox-frame-width));
    }

    .lightbox-bar {
      position: relative;
      flex-direction: column;
      align-items: stretch;
      gap: 0.8em;
      padding-top: 0.8em;
    }

    .lightbox-info {
      padding-right: 2.2em;
    }

    .lightbox-close-btn {
      position: absolute;
      top: 0.7em;
      right: 0;
      font-size: 1.3rem;
      line-height: 1;
      padding: 0.2em 0.4em;
    }

    .lightbox-controls {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.5em;
      width: 100%;
    }

    .lightbox-btn {
      width: 100%;
      min-height: 38px;
      padding: 0.4em 0.5em;
      font-size: 0.82rem;
      line-height: 1.2;
    }

    .lightbox-controls:not(:has(> .lightbox-btn:nth-child(4))) > .lightbox-btn:nth-child(3) {
      grid-column: 1 / -1;
    }

    .exit-fullscreen-btn {
      top: 0.8rem;
      right: 0.8rem;
      font-size: 0.78rem;
      padding: 0.4em 0.7em;
    }
  }
}

@layer variants {
  /* Framed fixed-ratio artwork cards for live/generative series */
  .project-live {
    --card-bg: #000;
    --card-border: var(--color-border-dark);
    --card-hover-opacity: 1;
    --card-hover-scale: 1.02;
    --card-intrinsic-height: 380px;
    --lightbox-max-width: 840px;
  }

  .project-live .artwork-link {
    aspect-ratio: var(--card-aspect-ratio);
    position: relative;
  }

  .project-live .artwork-link img {
    height: 100%;
    object-fit: cover;
  }
}