@layer components {

/* ── index ────────────────────────────────────────────────────────── */
.deck-list { border-top: 1px solid var(--rule-soft); }
.deck-card { display: grid; grid-template-columns: auto minmax(0, 1fr) 200px; gap: var(--s6);
  align-items: center; padding-block: var(--s6);
  border-bottom: 1px solid var(--rule-soft); text-decoration: none;
  transition: background-color var(--d-hover) ease; }
.deck-n { font-size: var(--t-machine); color: var(--graphite); align-self: start; padding-top: 4px; }
.deck-title { display: block; 
  font-size: 1.5rem; font-weight: 500; letter-spacing: -0.015em; }
.deck-note { display: block; margin-top: var(--s2); color: var(--ink-2);
  font-size: var(--t-small); max-width: 62ch; }
.deck-stats { display: grid; gap: var(--s2); }
.deck-bar { display: block; height: 3px; background: var(--paper-3); border-radius: 2px; overflow: hidden; }
.deck-bar i { display: block; height: 100%; background: var(--ink-2); }
.deck-count { font-size: var(--t-machine); color: var(--graphite); }
@media (hover: hover) and (pointer: fine) {
  .deck-card:hover { background: color-mix(in srgb, var(--paper-2) 60%, transparent); }
  .deck-card:hover .deck-title { text-decoration: underline; text-underline-offset: 4px; }
}
@media (max-width: 760px) {
  .deck-card { grid-template-columns: auto minmax(0, 1fr); gap: var(--s4); }
  .deck-stats { grid-column: 2; }
}

/* ── deck page ────────────────────────────────────────────────────── */
.deckhead { padding-bottom: var(--s6); }
.deck-toolbar { display: flex; align-items: center; justify-content: space-between;
  gap: var(--s5); flex-wrap: wrap; padding-block: var(--s4);
  border-block: 1px solid var(--rule-soft); position: sticky; top: var(--nav-h); z-index: 20;
  background: color-mix(in srgb, var(--ground) 92%, transparent); backdrop-filter: blur(10px); }
.deck-filter { display: flex; gap: 3px; padding: 3px; border-radius: var(--r-pill);
  background: var(--paper-2); box-shadow: inset 0 0 0 1px var(--rule-soft); }
.deck-filter button { min-height: 32px; padding-inline: var(--s4); border-radius: var(--r-pill);
  font-size: var(--t-caption); color: var(--ink-2);
  transition: background-color var(--d-hover) ease, color var(--d-hover) ease; }
.deck-filter button[aria-pressed="true"] { background: var(--ink); color: var(--ground); font-weight: 500; }
.deck-hint { font-size: var(--t-caption); }

.sheet { display: grid; gap: var(--s6); margin-top: var(--s7); padding-bottom: var(--s9);
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.tile-btn { display: grid; gap: var(--s3); width: 100%; text-align: left; }
.tile-stage { display: block; border: 1px solid var(--rule); border-radius: var(--r-lg);
  overflow: hidden; background: var(--view-ground); aspect-ratio: 4 / 3; position: relative;
  transition: border-color var(--d-hover) ease; }
.tile-mount { display: block; position: absolute; inset: 0; overflow: hidden; }
.tile-mount .xv-inner { position: absolute; top: 0; left: 0; }
.tile-foot { display: flex; align-items: baseline; gap: var(--s3); flex-wrap: wrap; }
.tile-n { font-size: var(--t-machine); color: var(--graphite); }
.tile-title { font-size: var(--t-small); color: var(--ink); }
.tile-chip { font-size: var(--t-machine); }
.tile.is-picked .tile-stage { box-shadow: 0 0 0 1px var(--ink); }
@media (hover: hover) and (pointer: fine) {
  .tile-btn:hover .tile-stage { border-color: var(--rule-strong); }
  .tile-btn:hover .tile-title { text-decoration: underline; text-underline-offset: 3px; }
}
.tile-btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: var(--r-lg); }

/* ── viewer ───────────────────────────────────────────────────────── */
#viewer { padding: 0; border: 1px solid var(--rule); border-radius: var(--r-xl); display: none;
  background: var(--paper); color: var(--ink); width: min(1240px, calc(100vw - 32px));
  max-width: none; max-height: calc(100dvh - 48px); box-shadow: var(--shadow-dialog);
  overflow: hidden; overscroll-behavior: contain; }
#viewer[open] { display: flex; flex-direction: column; }

/* the viewer grows from the tile it replaced, so the reader keeps their place */
#viewer {
  opacity: 0; transform: scale(0.97);
  transform-origin: var(--vx, 50%) var(--vy, 50%);
  transition: opacity var(--d-page) var(--ease-out), transform var(--d-page) var(--ease-out),
              display var(--d-page) allow-discrete, overlay var(--d-page) allow-discrete;
}
#viewer[open] { opacity: 1; transform: none; }
@starting-style { #viewer[open] { opacity: 0; transform: scale(0.97); } }
#viewer::backdrop { opacity: 0;
  transition: opacity var(--d-page) var(--ease-out),
              display var(--d-page) allow-discrete, overlay var(--d-page) allow-discrete; }
#viewer[open]::backdrop { opacity: 1; }
@starting-style { #viewer[open]::backdrop { opacity: 0; } }
#viewer-mount { transition: opacity var(--d-reveal) var(--ease-out); }
#viewer-mount[data-swapping] { opacity: 0; }
@media (prefers-reduced-motion: reduce) {
  #viewer, #viewer::backdrop, #viewer-mount { transition: none; }
}
#viewer::backdrop { background: rgba(0 0 0 / 0.6); }
[data-theme="light"] #viewer::backdrop { background: rgba(20 20 20 / 0.3); }
.viewer-bar { display: flex; align-items: center; gap: var(--s5); padding: var(--s4) var(--s5);
  border-bottom: 1px solid var(--rule-soft); }
.viewer-meta { display: flex; align-items: baseline; gap: var(--s3); flex-wrap: wrap; min-width: 0; }
.viewer-meta .mono { font-size: var(--t-machine); color: var(--graphite); }
.viewer-meta strong { font-weight: 500; }
.viewer-section { font-size: var(--t-machine); }
.viewer-actions { margin-left: auto; display: flex; gap: var(--s2); }
.viewer-actions button { min-width: 36px; min-height: 36px; padding-inline: var(--s3);
  border: 1px solid var(--rule); border-radius: var(--r-md); font-size: var(--t-caption);
  transition: border-color var(--d-hover) ease, transform var(--d-press) var(--ease-out); }
.viewer-actions button:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) { .viewer-actions button:hover { border-color: var(--rule-strong); } }
.viewer-thesis { padding: var(--s3) var(--s5); color: var(--ink-2); font-size: var(--t-small);
  border-bottom: 1px solid var(--rule-soft); }
.viewer-stage { overflow: auto; background: var(--view-ground); padding: var(--s5); flex: 1; }
.viewer-mount { position: relative; }
@media (max-width: 640px) {
  .viewer-bar { flex-wrap: wrap; }
  .viewer-actions { margin-left: 0; }
}
}