/* =========================================================================
   FILE STRUCTURE DEMO (#fileStructureDemo).
   See src/components/FileStructureDemo.astro for the storyboard.
   Timeline: public/js/file-structure-demo.js toggles `is-*` classes.

   A single steady scene, no crossfade — three file chips fade out one at
   a time as their matching table row lands, showing mixed documents
   turning into structured rows. Same --xxx-* palette likeness rules as
   every other demo on the site.
   ========================================================================= */

.fsd {
  --fsd-canvas: #FAF9F5;
  --fsd-card: #FFFFFF;
  --fsd-border: #DBDBDE;
  --fsd-line: #EAEAEA;
  --fsd-head: #F6F6F7;
  --fsd-ink: #2B2B2B;
  --fsd-ink2: #777777;
  --fsd-accent: #6A5BC6;
  --fsd-accent-soft: #ECECFF;
  --fsd-green: #2C8E45;
  --fsd-green-soft: #C4EECF;
}

.fsd__stage {
  position: relative; overflow: hidden; width: 100%;
  aspect-ratio: 3 / 2; min-height: 380px; max-width: 640px; margin: 0 auto;
  background: var(--fsd-canvas);
  display: flex; flex-direction: column;
  transition: opacity .5s ease;
}
.fsd.is-out .fsd__stage { opacity: 0; }

.fsd__topBar {
  flex: none; font-size: 11px; font-weight: 600; color: var(--fsd-ink);
  padding: 12px 14px 9px; border-bottom: 1px solid var(--fsd-line);
  white-space: nowrap;
}
.fsd__pane { flex: 1; min-height: 0; min-width: 0; padding: 16px 18px; display: flex; flex-direction: column; justify-content: center; gap: 12px; }

.fsd__files { display: flex; flex-direction: column; gap: 6px; }
.fsdFile {
  display: flex; align-items: center; gap: 7px; font-size: 10px; font-weight: 600; color: var(--fsd-ink);
  background: var(--fsd-card); border: 1px solid var(--fsd-border); border-radius: 7px; padding: 6px 10px;
  transition: opacity .35s ease, transform .35s ease;
}
.fsdFile__type {
  font-style: normal; font-size: 7.5px; font-weight: 700; color: var(--fsd-accent);
  background: var(--fsd-accent-soft); border-radius: 4px; padding: 2px 5px;
}
.fsd.is-landed-pdf .fsdFile[data-file="pdf"],
.fsd.is-landed-xls .fsdFile[data-file="xls"],
.fsd.is-landed-png .fsdFile[data-file="png"] { opacity: 0; transform: translateY(8px); pointer-events: none; }

.fsdTable { background: var(--fsd-card); border: 1px solid var(--fsd-border); border-radius: 8px; overflow: hidden; }
.fsdTable__head {
  font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--fsd-ink2);
  background: var(--fsd-head); padding: 7px 12px; border-bottom: 1px solid var(--fsd-border);
}
.fsdTable__row {
  display: flex; align-items: center; gap: 8px; padding: 8px 12px; font-size: 10.5px; color: var(--fsd-ink);
  border-bottom: 1px solid var(--fsd-line);
  opacity: 0; transform: translateY(-4px); transition: opacity .3s ease, transform .3s ease;
}
.fsdTable__row:last-child { border-bottom: none; }
.fsdTable__check { color: var(--fsd-green); font-weight: 700; font-size: 9px; opacity: 0; transition: opacity .2s ease; }
.fsd.is-landed-pdf .fsdTable__row[data-row="pdf"],
.fsd.is-landed-xls .fsdTable__row[data-row="xls"],
.fsd.is-landed-png .fsdTable__row[data-row="png"] { opacity: 1; transform: none; }
.fsd.is-landed-pdf .fsdTable__row[data-row="pdf"] .fsdTable__check,
.fsd.is-landed-xls .fsdTable__row[data-row="xls"] .fsdTable__check,
.fsd.is-landed-png .fsdTable__row[data-row="png"] .fsdTable__check { opacity: 1; }

.fsdDone {
  align-self: center; margin: 0; font-size: 9.5px; font-weight: 700; color: var(--fsd-green);
  background: #E3F5E9; border: 1px solid var(--fsd-green-soft); border-radius: 999px; padding: 4px 11px;
  opacity: 0; transform: translateY(4px); transition: opacity .4s ease, transform .4s ease;
}
.fsd.is-done .fsdDone { opacity: 1; transform: none; }

@media (max-width: 420px) {
  .fsd__stage { aspect-ratio: auto; min-height: 380px; }
}