/* ── folders view ────────────────────────────── */
  #view-folders {
    padding: 110px 40px 140px 40px;
    max-width: 1180px;
    margin: 0 auto;
    width: 100%;
  }
  .folders-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    margin-bottom: 56px;
    transition: opacity .2s, visibility .2s;
  }
  .folders-controls.hidden {
    opacity: 0;
    visibility: hidden;
    height: 0;
    margin: 0;
    overflow: hidden;
  }
  .folders-toggle {
    display: inline-flex;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 4px;
    gap: 2px;
  }
  .folders-toggle button {
    background: transparent;
    border: 0;
    padding: 8px 16px;
    border-radius: 999px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-mute);
    cursor: pointer;
    transition: color .2s, background .2s;
  }
  .folders-toggle button:hover { color: var(--ink); }
  .folders-toggle button.on {
    background: var(--ink);
    color: var(--bg);
  }
  .folders-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 56px 32px;
    margin-top: 8px;
  }
  .folders-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    font-family: var(--serif);
    font-size: 18px;
    color: var(--ink-mute);
  }
  .folder-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    padding: 8px 8px 16px;
    border-radius: 14px;
    transition: transform .35s cubic-bezier(.2,.8,.2,1), opacity .25s ease;
  }
  .folder-card:hover { transform: translateY(-4px); }
  .folder-svg {
    width: 100%;
    max-width: 220px;
    height: auto;
    display: block;
    margin-bottom: 18px;
    overflow: visible;
  }
  .folder-svg .paper {
    transform-box: fill-box;
    transform-origin: center center;
    transition: transform .4s cubic-bezier(.2,.8,.2,1);
  }
  .folder-card:hover .folder-svg .paper-1 { transform: rotate(-12deg) translateY(-3px); }
  .folder-card:hover .folder-svg .paper-2 { transform: rotate(2deg)  translateY(-5px); }
  .folder-card:hover .folder-svg .paper-3 { transform: rotate(13deg) translateY(-3px); }
  .folder-meta-eyebrow {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 8px;
  }
  .folder-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 22px;
    line-height: 1.15;
    letter-spacing: -.01em;
    color: var(--ink);
    margin: 0 0 6px;
    transition: color .2s;
  }
  .folder-card:hover .folder-title { color: var(--accent); }
  .folder-count {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }

  /* in-folder state — hide grid, show only the opened folder's files */
  .folders-grid.in-folder { display: block; }
  .folders-grid.in-folder .folder-card { display: none; }
  .folder-files {
    display: none;
    width: 100%;
    margin: 0 auto;
  }
  .folder-files.show { display: block; }
  .folder-files-head {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 16px;
    padding-bottom: 18px;
    margin-bottom: 22px;
    border-bottom: 1px solid var(--line);
  }
  .folder-files-back {
    justify-self: start;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 0;
    padding: 6px 10px 6px 6px;
    border-radius: 999px;
    cursor: pointer;
    color: var(--ink-soft);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    transition: color .2s, background .2s;
  }
  .folder-files-back:hover { color: var(--ink); background: var(--bg-tint); }
  .folder-files-back svg { transition: transform .2s; }
  .folder-files-back:hover svg { transform: translateX(-2px); }
  .folder-files-crumb {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    justify-self: center;
    text-align: center;
  }
  .folder-files-title-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    min-width: 160px;
  }
  .folder-files-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 22px;
    letter-spacing: -.01em;
    color: var(--ink);
  }
  .folder-files-meta {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }
  .folder-files-nav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px; height: 30px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: transparent;
    color: var(--ink-soft);
    cursor: pointer;
    transition: color .2s, border-color .2s, background .2s;
  }
  .folder-files-nav:hover { color: var(--ink); border-color: var(--ink); }
  .folder-files-nav:disabled { opacity: .35; cursor: default; }
  .folder-files-spacer { justify-self: end; }
  .folder-files-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
  }
  .folder-file {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    background: transparent;
    border: 0;
    padding: 0;
    transition: transform .25s cubic-bezier(.2,.8,.2,1);
  }
  .folder-file:hover { transform: translateY(-3px); }
  .folder-file:focus-visible { outline: none; }
  .folder-file:focus-visible .folder-file-paper { border-color: var(--ink); }
  .folder-file-paper {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 2;
    border-radius: 10px;
    background: var(--card);
    border: 1px solid var(--line);
    overflow: hidden;
    margin-bottom: 12px;
    transition: border-color .2s;
  }
  .folder-file:hover .folder-file-paper { border-color: var(--ink); }
  .folder-file-badge {
    position: absolute;
    top: 12px; left: 12px;
    width: 16px; height: 16px;
    border-radius: 4px;
    z-index: 2;
  }
  .folder-file-thumb {
    position: absolute;
    inset: 38px 12px 12px 12px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--bg-tint);
    border: 1px solid var(--line);
  }
  .folder-file-thumb video,
  .folder-file-thumb img,
  .folder-file-thumb svg {
    display: block;
    width: 100%; height: 100%;
    object-fit: cover;
  }
  .folder-file-text {
    width: 100%;
  }
  .folder-file-title {
    font-family: var(--serif);
    font-weight: 500;
    font-size: 16px;
    line-height: 1.2;
    color: var(--ink);
    margin: 0 0 4px;
  }
  .folder-file-sub {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }