/* GEN2 Assembly Instructions viewer — brand palette matches the planner */
:root {
  --accent: #ff8a40;
  --ink: #23262b;
  --ink-soft: #5b6069;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-border: #e3e5e9;
  --bg: #eef0f3;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body, #app { height: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  overflow: hidden;
}

#app { display: flex; flex-direction: column; }

#topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  background: #fff; border-bottom: 1px solid var(--panel-border);
}
#kit-title { font-weight: 700; font-size: 15px; }
#step-counter { font-size: 13px; color: var(--ink-soft); }

#stage-wrap { position: relative; flex: 1; min-height: 0; }
#stage { width: 100%; height: 100%; display: block; touch-action: none; }

#note-panel {
  position: absolute; top: 12px; left: 12px; right: 12px;
  max-width: 480px;
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-left: 4px solid var(--accent);
  border-radius: 10px; padding: 10px 14px;
  backdrop-filter: blur(4px);
  pointer-events: none;
}
#step-num {
  flex: none; width: 34px; height: 34px; margin-top: 1px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff;
  border-radius: 50%; font-weight: 800; font-size: 16px;
}
.note-body { min-width: 0; }
#step-title { font-weight: 700; font-size: 15px; margin-bottom: 2px; }
#step-note { font-size: 13px; color: var(--ink-soft); line-height: 1.45; }
/* collapse the step text to a small badge pill — reclaims the canvas while
   recoloring/inspecting; the header's "Step x / y" keeps the context */
/* big enough to FIND — the 24px ghost chevron was invisible next to the text.
   Expanded = ✕ (dismiss the text), collapsed = ▸ (bring it back). */
#note-collapse {
  pointer-events: auto; /* the panel itself is pointer-events: none */
  flex: none; align-self: flex-start;
  display: flex; align-items: center; justify-content: center;
  font: inherit; font-size: 22px; line-height: 1;
  width: 36px; height: 36px; margin: 0 -4px 0 0;
  border: none; background: rgba(0,0,0,.05); color: var(--ink-soft);
  border-radius: 50%; cursor: pointer;
}
#note-collapse:hover { color: var(--accent); background: rgba(0,0,0,.09); }
#note-panel.collapsed { right: auto; } /* shrink to the badge + chevron */
#note-panel.collapsed .note-body { display: none; }

#pointer-line {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none;
}
#pointer-line line { stroke: var(--ink); stroke-width: 1.5; opacity: 0.55; }

#checklist-panel {
  position: absolute; top: 76px; right: 12px;
  width: 250px; max-height: calc(100% - 140px); overflow-y: auto;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 10px; padding: 10px 12px;
  backdrop-filter: blur(4px);
}
.checklist-head {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  font-weight: 700; font-size: 13px; margin-bottom: 8px;
}
#checklist-close {
  font: inherit; font-size: 16px; line-height: 1;
  border: none; background: none; color: var(--ink-soft);
  cursor: pointer; padding: 0 2px;
}
#checklist-close:hover { color: var(--ink); }
#checklist-tab {
  position: absolute; top: 76px; right: 12px;
  font: inherit; font-size: 12.5px; font-weight: 700;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--panel-border); border-right: 3px solid var(--accent);
  border-radius: 999px; padding: 7px 14px;
  backdrop-filter: blur(4px);
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,.08);
}
#checklist-tab:hover { border-color: var(--accent); }
.checklist-row {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; padding: 4px 0;
  border-top: 1px solid var(--panel-border);
}
.checklist-row .chip { width: 15px; height: 15px; border-radius: 4px; flex: none; border: 1px solid rgba(0,0,0,.15); margin-top: 2px; padding: 0; cursor: pointer; }
.checklist-row .chip:hover { outline: 2px solid var(--accent); outline-offset: 1px; }
/* purchased hardware: the chip is a plain color dot, not a filament picker */
.checklist-row .chip.locked { cursor: default; }
.checklist-row .chip.locked:hover { outline: none; }
/* section headers inside the parts/options panel — one look for all three
   (⚙ Build options · 🎨 Filament colors · 🧩 Parts to print) */
.section-head { font-size: 11.5px; font-weight: 800; color: var(--ink-soft); letter-spacing: .01em; margin-bottom: 7px; }
#parts-head { margin: 2px 0 8px; }
/* the shared "needs bought hardware" wrench, inline in text — sized in em so it
   tracks whatever it sits beside, and currentColor so it never fights the theme */
/* 1.25em, not 1em: the cropped viewBox means the box IS the wrench, with none
   of the internal padding an emoji carries — at a matched em they looked
   mismatched, this sits level with the 🧩 beside it */
.hw-ico { width: 1.25em; height: 1.25em; vertical-align: -0.28em; fill: currentColor; }
#build-options { margin-bottom: 8px; padding-bottom: 10px; border-bottom: 1px solid var(--panel-border); }
.opt-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.opt-label { font-size: 12px; font-weight: 600; }
.opt-seg { display: inline-flex; border: 1px solid var(--panel-border); border-radius: 8px; overflow: hidden; }
.opt-seg button { font: inherit; font-size: 11px; font-weight: 700; padding: 5px 10px; border: none; background: #fff; color: var(--ink-soft); cursor: pointer; }
.opt-seg button + button { border-left: 1px solid var(--panel-border); }
.opt-seg button.on { background: var(--accent); color: #fff; }
.opt-cycle button { color: var(--accent); padding: 5px 8px; }
.opt-cycle-name { font-size: 11px; font-weight: 700; padding: 0 6px; align-self: center; min-width: 70px; text-align: center; }
.opt-reset { width: 100%; font: inherit; font-size: 11.5px; font-weight: 700; margin-top: 4px; padding: 6px; border: 1px solid var(--panel-border); background: none; color: var(--ink-soft); border-radius: 7px; cursor: pointer; }
.opt-reset:hover { border-color: var(--accent); color: var(--accent); }
#preset-bar { margin-bottom: 8px; padding-bottom: 10px; border-bottom: 1px solid var(--panel-border); }
.preset-label { font-size: 11px; font-weight: 700; color: var(--ink-soft); margin-bottom: 6px; }
/* the preset block collapses so a growing preset library never crowds the
   panel — the head doubles as the toggle and names the active palette */
#preset-head {
  display: flex; align-items: center; gap: 6px; width: 100%;
  font: inherit; font-size: 11.5px; font-weight: 800; color: var(--ink-soft);
  letter-spacing: .01em; margin-bottom: 7px;
  background: none; border: 0; padding: 0; cursor: pointer; text-align: left;
}
#preset-head.collapsed { margin-bottom: 0; }
#preset-head .chev { margin-left: auto; font-size: 10px; transition: transform .18s; }
#preset-head.collapsed .chev { transform: rotate(-90deg); }
#preset-active { font-weight: 600; opacity: .85; }
#preset-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.preset-chip {
  display: inline-flex; align-items: center; gap: 5px;
  font: inherit; font-size: 11px; font-weight: 600; color: var(--ink);
  border: 1px solid var(--panel-border); background: none;
  border-radius: 999px; padding: 3px 9px 3px 4px; cursor: pointer;
}
.preset-chip:hover { border-color: var(--accent); color: var(--accent); }
.preset-chip.on { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
/* the user's own hand-built palette — presets never overwrite it */
.preset-chip.mine::before { content: "★"; color: var(--accent); font-size: 10px; margin-right: -1px; }
.preset-sw { display: inline-flex; }
.preset-sw i { width: 11px; height: 11px; border-radius: 50%; display: block; margin-left: -3px; border: 1.5px solid var(--panel); }
.preset-sw i:first-child { margin-left: 0; }
#preset-io { display: flex; gap: 6px; margin-top: 8px; }

#checklist-actions {
  display: flex; gap: 6px; margin-top: 10px; padding-top: 10px;
  border-top: 1px solid var(--panel-border);
}
.bom-btn {
  flex: 1; font: inherit; font-size: 11.5px; font-weight: 700;
  border: 1px solid var(--panel-border); background: none; color: var(--ink);
  border-radius: 7px; padding: 6px 8px; cursor: pointer; white-space: nowrap;
}
.bom-btn:hover { border-color: var(--accent); color: var(--accent); }
.checklist-row .qty { margin-left: auto; font-weight: 700; color: var(--ink-soft); align-self: flex-start; }
.checklist-row { align-items: flex-start; }
.cl-mid { display: flex; flex-direction: column; gap: 2px; min-width: 0; }

.dl-link {
  display: inline-block; font-size: 11px; font-weight: 700;
  color: var(--accent); text-decoration: none;
  border: 1px solid var(--panel-border); border-radius: 999px;
  padding: 1px 8px; margin-right: 4px;
}
.dl-link:hover { border-color: var(--accent); }
/* One store button per row + a ▾ for the others, so the row stays the same
   width however many stores exist. */
.dl-more { position: relative; display: inline-block; }
.dl-more-btn {
  font: inherit; font-size: 11px; line-height: 1; cursor: pointer;
  padding: 4px 6px; margin-left: -3px;
  color: var(--ink-soft); background: none;
  border: 1px solid var(--panel-border); border-radius: 6px;
}
.dl-more-btn:hover { color: var(--ink); border-color: var(--accent); }
.dl-more-menu {
  position: absolute; z-index: 40; top: calc(100% + 4px); left: 0; min-width: 128px;
  display: flex; flex-direction: column; gap: 2px; padding: 5px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 9px; box-shadow: 0 6px 20px rgba(0,0,0,.18);
}
/* menu items are .dl-link pills stacked vertically — the ID-qualified variant
   outranks `#identify-links .dl-link`'s margin, which would otherwise win */
.dl-more-menu .dl-more-item,
#identify-links .dl-more-menu .dl-more-item { display: block; margin: 0; white-space: nowrap; text-align: center; }
#store-pref {
  display: flex; align-items: center; gap: 7px;
  margin-top: 7px; font-size: 11.5px; color: var(--ink-soft);
}
#store-select {
  font: inherit; font-size: 11.5px; color: var(--ink);
  padding: 3px 6px; border: 1px solid var(--panel-border);
  border-radius: 6px; background: var(--panel); cursor: pointer;
}

#identify-card {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-left: 4px solid var(--accent);
  border-radius: 12px; padding: 10px 16px;
  backdrop-filter: blur(4px);
  text-align: left; min-width: 240px;
  box-shadow: 0 4px 18px rgba(0,0,0,.12);
}
#identify-img {
  flex: none; width: 62px; height: 62px; object-fit: contain;
  background: #fff; border: 1px solid var(--panel-border); border-radius: 8px;
}
.identify-body { min-width: 0; }
#identify-style {
  display: flex; align-items: center; gap: 8px; margin-top: 7px;
  font-size: 12.5px; font-weight: 700;
}
#identify-style button {
  font: inherit; font-size: 11px; line-height: 1;
  width: 24px; height: 24px; border-radius: 50%;
  border: 1px solid var(--panel-border); background: #fff; color: var(--accent);
  cursor: pointer;
}
#identify-style button:hover { border-color: var(--accent); }
#style-name { min-width: 84px; text-align: center; }
#identify-name { font-weight: 700; font-size: 14px; }
#identify-qty { font-size: 12px; color: var(--ink-soft); margin: 2px 0 6px; }
/* 2-zone parts (EdgeLabel): Body + Grip color chips under the qty line */
#identify-zones { display: flex; gap: 6px; margin: 0 0 6px; }
.zone-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font: inherit; font-size: 11.5px; font-weight: 700;
  border: 1px solid var(--panel-border); border-radius: 999px;
  padding: 3px 10px 3px 4px; background: #fff; cursor: pointer;
}
.zone-chip i { width: 18px; height: 18px; border-radius: 50%; border: 1px solid rgba(0,0,0,.15); }
.zone-chip:hover { border-color: var(--accent); }
/* the zone the picker is currently editing — without it you can't tell which
   swatch your next pick lands on */
.zone-chip.on { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(255,138,64,.28); }
#identify-links .dl-link { margin: 0 6px 0 0; padding: 3px 12px; font-size: 12px; }
#identify-remove {
  margin-top: 8px; font: inherit; font-size: 11.5px; font-weight: 700;
  color: var(--bad, #d23a2e); background: none; cursor: pointer;
  border: 1px solid var(--panel-border); border-radius: 999px; padding: 4px 12px;
}
#identify-remove:hover { border-color: var(--bad, #d23a2e); background: #fff2f0; }
/* faceplate isolation → drawer hand-off ("Open the drawer"), the explicit way
   out of an open drawer ("Close drawer"), and the label-generator handoff
   ("Design your labels") — accent pills in the card */
#identify-open-drawer, #identify-close-drawer, #identify-label-gen {
  display: inline-block; text-decoration: none;
  margin-top: 8px; font: inherit; font-size: 11.5px; font-weight: 700;
  color: var(--accent); background: none; cursor: pointer;
  border: 1px solid var(--panel-border); border-radius: 999px; padding: 4px 12px;
}
#identify-open-drawer:hover, #identify-close-drawer:hover, #identify-label-gen:hover { border-color: var(--accent); background: #fff6ee; }

#color-toggle {
  position: absolute; top: 120px; right: 12px;
  font: inherit; font-size: 12.5px; font-weight: 700;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--panel-border); border-right: 3px solid #2f9be0;
  border-radius: 999px; padding: 7px 14px;
  backdrop-filter: blur(4px); cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,.08);
}
#color-toggle:hover { border-color: #2f9be0; }

/* 📏 measure tool — pill stacks under the parts/colors pills; the label is a
   floating readout tracking the measurement line's midpoint (mm + ΔXYZ) */
#measure-toggle {
  position: absolute; top: 164px; right: 12px;
  font: inherit; font-size: 12.5px; font-weight: 700;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--panel-border); border-right: 3px solid var(--accent);
  border-radius: 999px; padding: 7px 14px;
  backdrop-filter: blur(4px); cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,.08);
}
#measure-toggle:hover { border-color: var(--accent); }
#measure-toggle.on { background: var(--accent); border-color: var(--accent); color: #fff; }
#measure-label {
  position: absolute; transform: translate(-50%, -135%);
  background: var(--panel); border: 1px solid var(--accent);
  border-radius: 8px; padding: 5px 10px;
  font-size: 13px; font-weight: 800; text-align: center; line-height: 1.25;
  pointer-events: none; white-space: nowrap;
  box-shadow: 0 3px 12px rgba(0,0,0,.14);
}
#measure-label small { display: block; font-size: 10.5px; font-weight: 600; color: var(--ink-soft); }

/* overall W/H/L dimension callouts on the final assembled step */
.dim-label {
  position: absolute; transform: translate(-50%, -50%);
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 7px; padding: 3px 8px;
  font-size: 12px; text-align: center; line-height: 1.2;
  pointer-events: none; white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,.10);
}
.dim-label b { font-weight: 800; color: var(--accent); margin-right: 2px; }
.dim-label small { display: block; font-size: 9.5px; font-weight: 600; color: var(--ink-soft); }

/* ?debug=1 part readout in the identify card (manifest pos + bbox mm) */
#identify-debug {
  font-family: ui-monospace, Consolas, monospace; font-size: 10.5px;
  color: var(--ink-soft); margin-top: 3px;
}

.identify-name-row { display: flex; align-items: center; gap: 7px; }
#identify-swatch {
  flex: none; width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid #fff; outline: 1px solid var(--panel-border);
  cursor: pointer; padding: 0;
}
#identify-swatch:hover { outline-color: var(--accent); }
#identify-swatch.locked { cursor: default; }
#identify-swatch.locked:hover { outline-color: var(--panel-border); }

#tap-hint {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  max-width: min(560px, 88%);
  display: flex; align-items: center; gap: 10px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-bottom: 3px solid var(--accent);
  border-radius: 999px; padding: 9px 10px 9px 18px;
  font-size: 13px; font-weight: 600; color: var(--ink);
  box-shadow: 0 6px 24px rgba(0,0,0,.16); backdrop-filter: blur(4px);
  pointer-events: auto; z-index: 20;
}
#tap-hint-x {
  font: inherit; font-size: 16px; line-height: 1; flex: none;
  width: 24px; height: 24px; border-radius: 50%;
  border: 1px solid var(--panel-border); background: none; color: var(--ink-soft);
  cursor: pointer;
}
#tap-hint-x:hover { color: var(--ink); border-color: var(--ink-soft); }

#filament-menu {
  position: absolute; bottom: 108px; left: 50%; transform: translateX(-50%);
  width: 300px;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 12px; padding: 12px 14px;
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 24px rgba(0,0,0,.16);
}
/* the ✕ sits on the title row so it costs no vertical space; `position:
   relative` here is what anchors it (the menu itself is the positioned
   ancestor for the bottom-sheet layout, so don't anchor to that) */
.fm-head { font-weight: 800; font-size: 13px; margin-bottom: 7px; position: relative; padding-right: 26px; }
.fm-head span { font-weight: 600; color: var(--ink-soft); font-size: 11.5px; }
#fm-close {
  position: absolute; top: -3px; right: -4px;
  width: 26px; height: 26px; padding: 0; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  font: inherit; font-size: 19px; font-weight: 700;
  color: var(--ink-soft); background: none; border: 0; border-radius: 7px;
  cursor: pointer;
}
#fm-close:hover { color: var(--ink); background: rgba(0,0,0,.06); }
#fm-search {
  width: 100%; box-sizing: border-box; font: inherit; font-size: 11.5px;
  border: 1px solid var(--panel-border); border-radius: 7px;
  padding: 5px 9px; margin-bottom: 8px; background: none; color: var(--ink);
}
#fm-search:focus { outline: none; border-color: var(--accent); }
#fm-brands { max-height: 264px; overflow-y: auto; overscroll-behavior: contain; }
.fm-brand + .fm-brand { margin-top: 4px; }
.fm-brand-head {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  font: inherit; font-size: 11.5px; font-weight: 800; color: var(--ink);
  background: none; border: none; padding: 5px 2px; cursor: pointer; text-align: left;
}
.fm-brand-head i { font-style: normal; font-weight: 600; color: var(--ink-soft); font-size: 10.5px; }
.fm-brand-head:hover, .fm-brand-head:hover i { color: var(--accent); }
.fm-chev { color: var(--ink-soft); font-size: 10px; }
.fm-none { font-size: 11.5px; color: var(--ink-soft); padding: 8px 2px; }
.fm-swatches { display: grid; grid-template-columns: repeat(8, 1fr); gap: 7px; padding: 3px 2px 7px; }
.fm-swatches button {
  width: 26px; height: 26px; border-radius: 50%;
  border: 2px solid #fff; outline: 1px solid var(--panel-border);
  cursor: pointer; padding: 0;
}
.fm-swatches button:hover { outline: 2px solid var(--accent); }
.fm-swatches button.active { outline: 2.5px solid var(--accent); }
.fm-swatches button.pick { position: relative; }
.fm-swatches button.pick::after {
  content: "★"; position: absolute; top: -7px; right: -5px;
  font-size: 10px; color: var(--accent);
  text-shadow: 0 0 2px #fff;
}
.fm-note {
  margin-top: 9px; font-size: 10.5px; line-height: 1.4;
  color: var(--ink-soft);
}
.fm-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  margin-top: 11px; font-size: 12px;
}
#fm-buy { color: var(--accent); font-weight: 700; text-decoration: none; }
#fm-buy:hover { text-decoration: underline; }
#fm-reset {
  font: inherit; font-size: 11px; font-weight: 600;
  border: 1px solid var(--panel-border); background: none; color: var(--ink-soft);
  border-radius: 999px; padding: 3px 10px; cursor: pointer;
}
#fm-reset:hover { color: var(--ink); border-color: var(--ink-soft); }

#outro-overlay {
  position: absolute; inset: 0;
  pointer-events: none;
}
.outro-card {
  position: absolute; left: 6%; top: 50%;
  transform: translateY(-50%);
  width: min(340px, 44vw);
  display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
  background: rgba(255,255,255,0.82); border: 1px solid var(--panel-border);
  border-left: 4px solid var(--accent);
  border-radius: 16px; padding: 20px 24px;
  backdrop-filter: blur(9px);
  box-shadow: 0 8px 30px rgba(0,0,0,.14);
  pointer-events: auto;
}
.outro-head { display: flex; align-items: center; gap: 12px; } /* logo beside the title, not stacked */
#outro-logo { height: 40px; width: auto; flex: none; }
.outro-title { font-size: 21px; font-weight: 800; line-height: 1.1; }
.outro-sub { font-size: 13px; color: var(--ink-soft); line-height: 1.45; margin-bottom: 4px; }
.outro-btn {
  display: block; width: 100%; text-align: center; box-sizing: border-box;
  font-size: 14px; font-weight: 700; text-decoration: none;
  padding: 11px 16px; border-radius: 10px;
  border: 1px solid var(--panel-border); color: var(--ink); background: #fff;
}
.outro-btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.outro-btn:hover { filter: brightness(1.04); }
.outro-links { display: flex; gap: 16px; margin-top: 6px; font-size: 12.5px; font-weight: 700; }
.outro-links a { color: var(--ink-soft); text-decoration: none; }
.outro-links a:hover { color: var(--accent); }

/* Cover backdrop: a soft spotlight + warm brand glow + edge vignette that
   composites over the 3D for a "premium box front", then fades to the normal
   flat bg when leaving page 0 (goTo toggles .show; the canvas bg shows through
   the mostly-transparent center, so the build never looks tinted). */
#cover-bg {
  position: absolute; inset: 0; pointer-events: none; z-index: 1;
  opacity: 0; transition: opacity .7s ease;
  background:
    radial-gradient(115% 80% at 40% 40%, rgba(255,255,255,.55), rgba(255,255,255,0) 46%),
    radial-gradient(120% 100% at 50% 120%, rgba(255,138,64,.12), rgba(255,138,64,0) 55%),
    radial-gradient(145% 125% at 50% 48%, rgba(24,28,38,0) 52%, rgba(24,28,38,.20) 100%);
}
#cover-bg.show { opacity: 1; }

#cover-overlay {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 2;
}
/* diagonal corner ribbon (top-left): a thick two-line box seal — big collection
   number over "COLLECTION". The band's CENTER sits on the corner diagonal
   (centerX = centerY: left = c − width/2, top = c − height/2 with c≈75) so both
   ends run off the top + left screen edges (overflow:hidden clips them there)
   instead of one end floating mid-canvas. */
#cover-ribbon { position: absolute; top: 0; left: 0; width: 208px; height: 208px; overflow: hidden; }
.cr-band {
  position: absolute; top: 45px; left: -55px; width: 260px;
  padding: 9px 0; transform: rotate(-45deg);
  display: flex; flex-direction: column; align-items: center; line-height: 1;
  background: linear-gradient(180deg, #ffa15c, var(--accent)); color: #fff;
  box-shadow: 0 5px 14px rgba(0,0,0,.24);
}
.cr-band b { font-size: 27px; font-weight: 800; text-shadow: 0 1px 2px rgba(0,0,0,.3); }
.cr-band span { margin-top: 3px; font-size: 11px; font-weight: 800; letter-spacing: .22em; text-transform: uppercase; opacity: .95; }
.cover-right {
  position: absolute; right: 7%; top: 50%;
  transform: translateY(-54%);
  width: min(360px, 38vw);
  display: flex; flex-direction: column; align-items: flex-start;
  pointer-events: auto;
  isolation: isolate;
}
/* soft light halo behind the whole overlay so the title + button stay legible
   over any build color (dark cases, red drawers, etc.) */
.cover-right::before {
  content: ''; position: absolute; z-index: -1; pointer-events: none;
  inset: -11% -14% -11% -22%;
  background: radial-gradient(ellipse at 55% 50%,
    rgba(244,246,248,0.94) 0%, rgba(244,246,248,0.80) 44%, rgba(244,246,248,0) 76%);
  filter: blur(8px);
}
#cover-logo { width: 100%; height: auto; }
/* one-line lockup: italic blue "3D" + black all-caps "BUILD STUDIO" */
.cover-lede {
  margin-top: 22px; padding-top: 18px; position: relative;
  display: flex; flex-direction: row; align-items: baseline;
  gap: 10px; flex-wrap: wrap;
}
.cover-lede::before { /* thin accent rule tying the lockup together */
  content: ''; position: absolute; top: 0; left: 2px; width: 46px; height: 3px;
  border-radius: 3px; background: var(--accent);
}
.cover-dynamic {
  font-size: clamp(23px, 2.9vw, 34px); font-weight: 800; font-style: italic; line-height: 1.05;
  letter-spacing: .02em; text-transform: uppercase; color: #2f9be0;
  text-shadow: 0 1px 10px rgba(244,246,248,.95);
}
.cover-manual {
  font-size: clamp(23px, 2.9vw, 34px); font-weight: 800;
  letter-spacing: .02em; text-transform: uppercase; color: #33363c; line-height: 1.05;
  text-shadow: 0 1px 12px rgba(244,246,248,.95);
}
#btn-start {
  margin-top: 26px;
  display: inline-flex; align-items: center; gap: 9px;
  font: inherit; font-size: 17px; font-weight: 700;
  padding: 13px 30px; border-radius: 12px;
  border: none; background: var(--accent); color: #fff;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(255,138,64,0.42), 0 2px 8px rgba(0,0,0,0.16);
}
#btn-start i { font-style: normal; transition: transform .2s ease; }
#btn-start:hover { filter: brightness(1.05); }
#btn-start:hover i { transform: translateX(4px); }
#btn-start:active { transform: translateY(1px); }
/* quiet secondary action under the CTA — for people here to customize, not
   build. A translucent pill instead of bare text: the model sometimes sits
   right behind it, and gray-on-gray was unreadable at some camera angles. */
#btn-skip-end {
  margin-top: 12px; padding: 6px 14px;
  font: inherit; font-size: 13px; font-weight: 700;
  border: none; cursor: pointer; color: #3f434a;
  background: rgba(244,246,248,0.78);
  border-radius: 999px;
  box-shadow: 0 1px 6px rgba(0,0,0,0.10);
}
#btn-skip-end:hover { color: var(--accent); background: rgba(244,246,248,0.94); }
/* official kits only: the planner on-ramp — same quiet-pill family as the skip
   link, accent-tinted so "make it yours" reads as the next adventure, not chrome */
#btn-customize {
  margin-top: 8px; padding: 6px 14px;
  font: inherit; font-size: 13px; font-weight: 700;
  border: none; cursor: pointer; color: var(--accent);
  background: rgba(255,244,235,0.86);
  border-radius: 999px;
  box-shadow: 0 1px 6px rgba(0,0,0,0.10);
}
#btn-customize:hover { background: rgba(255,238,224,0.97); }
/* embed cover: the skip link's job is done better by the preview landing —
   swap it for the way back (same quiet-pill look) */
#cover-preview {
  display: none;
  margin-top: 12px; padding: 6px 14px;
  font: inherit; font-size: 13px; font-weight: 700;
  border: none; cursor: pointer; color: #3f434a;
  background: rgba(244,246,248,0.78);
  border-radius: 999px;
  box-shadow: 0 1px 6px rgba(0,0,0,0.10);
}
#cover-preview:hover { color: var(--accent); background: rgba(244,246,248,0.94); }
body.embed #btn-skip-end { display: none; }
body.embed #cover-preview { display: inline-block; }

/* LEGO-box stat badges (bottom-left): big "ONLY N PARTS" block + drawers /
   steps / real W×H×L chips — all engine-computed (renderCoverBadges) */
#cover-badges {
  position: absolute; left: 18px; bottom: 20px;
  display: flex; align-items: flex-end; gap: 9px; flex-wrap: wrap;
}
.cv-hero {
  display: flex; flex-direction: column; align-items: center;
  background: linear-gradient(160deg, #ffa15c, var(--accent));
  color: #fff; border-radius: 13px; padding: 9px 17px 8px;
  transform: rotate(-3deg);
  box-shadow: 0 6px 18px rgba(255,138,64,.45);
  animation: cvPop .5s cubic-bezier(.34,1.56,.64,1) both; /* playful entrance */
}
.cv-hero b { font-size: 32px; font-weight: 800; line-height: 1; }
.cv-hero > span:last-child { font-size: 10.5px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.cv-chip {
  display: flex; flex-direction: column; align-items: center;
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 10px; padding: 7px 12px 6px;
  box-shadow: 0 2px 10px rgba(0,0,0,.08);
}
.cv-chip b { font-size: 15px; font-weight: 800; line-height: 1.15; color: var(--ink); }
.cv-chip span { font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-soft); }
@keyframes cvPop { from { transform: rotate(-3deg) scale(0); } to { transform: rotate(-3deg) scale(1); } }

#loading-overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  background: var(--bg);
}
#loading-text { font-size: 13px; color: var(--ink-soft); }
.spinner {
  width: 34px; height: 34px; border-radius: 50%;
  border: 3px solid var(--panel-border); border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Embed mode (?embed=1 — docked inside the planner's split view) ----
   Slimmer chrome: the planner supplies the title + BOM exports, so the top
   bar and export buttons go; the "preview" landing additionally hides the
   step chrome and floats a Begin pill + a one-time orbit hint. All of it is
   class-driven (body.embed / body.embed-preview / body.embed-hint-on) so
   re-renders and regenerates can't undo it. */
body.embed #topbar { display: none; }
body.embed #checklist-actions { display: none; }   /* Copy/CSV live in the planner's BOM */
body.embed #store-pref { display: none; }          /* the docked planner owns the store preference */
/* the dock is narrower than a desktop but wider than the 560px mobile break:
   cap the note clear of the top-right pills, and give LONG notes the mobile
   treatment — capped height, text scrolls inside (Joey's ask) */
body.embed #note-panel { max-width: min(420px, calc(100% - 170px)); max-height: 34vh; }
body.embed #note-panel .note-body { overflow-y: auto; max-height: calc(34vh - 20px); pointer-events: auto; }
/* one sheet at a time (mobile's rule, panel-open set by setChecklist): an
   OPEN parts panel owns the pane — the note returns when it closes (✕, or
   tapping a part folds the panel) */
body.embed.panel-open #note-panel { display: none; }
/* embed-only: the way back to the preview landing. Needs the double-id
   specificity — a bare #btn-preview{display:none} LOSES to the
   `#ctl-tools button{display:flex}` base rule, which shipped the Preview
   tool to the standalone viewer and wrapped the mobile controls bar
   (Joey's phone repro, 2026-07-19). */
#controls #btn-preview { display: none; }
body.embed #controls #btn-preview { display: flex; } /* flex (not inline-flex) — keeps the tool group's column icon/caption layout */
body.embed-preview #controls { display: none; }
body.embed-preview #note-panel { display: none; }
#embed-begin { display: none; }
body.embed-preview #embed-begin {
  display: inline-flex; align-items: center; gap: 8px;
  position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%);
  z-index: 30;
  font: inherit; font-weight: 700; font-size: 14px;
  padding: 11px 20px; border-radius: 8px; /* the planner's button shape (Joey) */
  border: 1px solid var(--accent); background: var(--accent); color: #fff;
  cursor: pointer; box-shadow: 0 6px 20px rgba(0,0,0,.22);
}
body.embed-preview #embed-begin:hover { filter: brightness(1.07); }
/* the Begin pill owns bottom-center on the preview — lift the identify card
   clear of it (Joey: tapping a part buried the card's style arrows under the
   pill). Desktop widths only: the ≤560 bottom-sheet card layers ABOVE the
   pill already (z 32 vs 30). */
@media (min-width: 561px) {
  body.embed-preview #identify-card { bottom: 72px; }
}
#embed-hint { display: none; }
body.embed-preview.embed-hint-on #embed-hint {
  display: block;
  position: absolute; left: 50%; bottom: 64px; transform: translateX(-50%);
  z-index: 29; pointer-events: none;
  font-size: 12px; color: var(--ink-soft);
  background: rgba(255,255,255,.92); border: 1px solid var(--panel-border);
  border-radius: 999px; padding: 6px 14px;
  box-shadow: 0 4px 14px rgba(0,0,0,.12);
}

/* Live-sync blocked veil: the planner reported an un-instruction-able layout.
   Sits over the whole stage (scene stays mounted, dimmed behind) and eats
   pointer events so nothing is interactable until a legal layout arrives. */
#blocked-overlay {
  position: absolute; inset: 0; z-index: 60;
  display: flex; align-items: center; justify-content: center;
  background: rgba(24, 25, 28, 0.55);
  backdrop-filter: blur(2px);
}
#blocked-overlay.hidden { display: none; }
.blocked-card {
  max-width: 420px; margin: 16px;
  background: #fff; border-radius: 14px;
  padding: 22px 26px;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
  text-align: center;
}
.blocked-icon { font-size: 30px; line-height: 1; }
.blocked-card h2 { margin: 10px 0 8px; font-size: 17px; color: var(--ink); }
#blocked-reason { margin: 0 0 10px; font-size: 13.5px; line-height: 1.5; color: var(--ink); }
.blocked-hint { margin: 0; font-size: 12px; line-height: 1.5; color: var(--ink-soft); }

#controls {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 14px;
  background: #fff; border-top: 1px solid var(--panel-border);
}
#controls button {
  /* radius 8 + weight 700 = the planner's button vocabulary (2026-07-19,
     Joey: the two tools should read as one app; same accent + font already) */
  font: inherit; font-weight: 700; font-size: 14px;
  padding: 10px 18px; border-radius: 8px;
  border: 1px solid var(--panel-border); background: #fff; color: var(--ink);
  cursor: pointer;
}
#controls button:active { transform: translateY(1px); }
#btn-next { background: var(--accent); border-color: var(--accent); color: #fff; }
/* the three tool buttons sit together as one group: icon + tiny caption */
#ctl-tools { display: flex; gap: 6px; }
#ctl-tools button {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 6px 12px 5px; min-width: 64px;
}
#ctl-tools button i { font-style: normal; font-size: 15px; line-height: 1.1; }
#ctl-tools button span { font-size: 9.5px; font-weight: 700; line-height: 1; color: var(--ink-soft); }
#btn-slow.on { border-color: var(--accent); color: var(--accent); background: #fff6f0; box-shadow: inset 0 0 0 1px var(--accent); }
#btn-slow.on span { color: var(--accent); }
#btn-cam { border-color: var(--accent); } /* appears only while the user has camera control */
#btn-cam span { color: var(--accent); }
#controls button:disabled { opacity: .35; cursor: default; }

#step-dots { display: flex; gap: 5px; flex-wrap: wrap; justify-content: center; align-items: center; }
#step-dots .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--panel-border); cursor: pointer;
}
#step-dots .dot.on { background: var(--accent); }
/* the finished-build marker: the final assembly step's dot wears a check so
   customizers can jump straight to the completed model from the timeline */
#step-dots .dot.finish {
  width: 15px; height: 15px;
  display: flex; align-items: center; justify-content: center;
}
/* unreached: darker than the plain gray dots so the white check still reads */
#step-dots .dot.finish:not(.on) { background: #b9bec7; }
#step-dots .dot.finish::after {
  content: '\2713';
  font-size: 9.5px; font-weight: 800; line-height: 1; color: #fff;
}

.hidden { display: none !important; }

@media (max-width: 560px) {
  /* Mobile layout: the desktop floating panels dock to the bottom as full-width
     "sheets" (one at a time, layered by z-index), the step note stays pinned at
     the top, and the Parts / colors controls become bottom-corner pills — so
     nothing overlaps on a narrow screen. The parts list defaults to minimized on
     mobile (see main.js isMobile()); tap "Parts · N" to slide it up. */
  /* long step notes (wall bench text) used to eat half the phone screen and
     sit over the action — cap the panel and scroll the text inside instead;
     main.js also pans the camera down by the note's real height (view inset) */
  #note-panel { max-width: none; left: 8px; right: 8px; top: 8px; padding: 9px 12px; max-height: 34vh; }
  #note-panel .note-body { overflow-y: auto; max-height: calc(34vh - 20px); pointer-events: auto; }
  #step-title { font-size: 14.5px; }
  #step-note { font-size: 12.5px; }

  /* Parts tab + colors toggle: bottom-corner pills, clear of the note and each other */
  #checklist-tab { top: auto; bottom: 10px; right: 10px; font-size: 13px; padding: 9px 16px; }
  #color-toggle  { top: auto; bottom: 10px; left: 10px; right: auto; font-size: 12px; padding: 9px 13px; }
  #measure-toggle { top: auto; bottom: 58px; right: 10px; font-size: 12px; padding: 9px 13px; } /* stacks above the Parts pill */

  /* Parts list: full-width bottom sheet */
  #checklist-panel {
    top: auto; left: 0; right: 0; bottom: 0; width: auto; max-width: none;
    max-height: 74%; overflow-y: auto;
    border: 1px solid var(--panel-border); border-top: 4px solid var(--accent);
    border-radius: 16px 16px 0 0; padding: 12px 14px 16px;
    z-index: 30; box-shadow: 0 -6px 24px rgba(0,0,0,.18);
  }
  .checklist-head { font-size: 14px; }
  #checklist-close { font-size: 22px; padding: 0 6px; }

  /* Identify card: full-width bottom sheet (mutually exclusive with the parts list) */
  #identify-card {
    left: 0; right: 0; bottom: 0; transform: none; width: auto; max-width: none; min-width: 0;
    border-left: none; border-top: 4px solid var(--accent); border-radius: 16px 16px 0 0;
    padding: 12px 16px 16px;
    z-index: 32; box-shadow: 0 -6px 24px rgba(0,0,0,.18);
  }
  #identify-style button { width: 30px; height: 30px; }

  /* Filament picker: bottom sheet, sits above the identify card */
  #filament-menu {
    bottom: 0; left: 0; right: 0; transform: none; width: auto; max-width: none;
    border-radius: 16px 16px 0 0; padding: 12px 14px 16px;
    z-index: 34; box-shadow: 0 -6px 24px rgba(0,0,0,.18);
  }
  .fm-swatches button { width: 30px; height: 30px; }
  /* bottom sheet: the ✕ is the primary dismiss, so give it a real touch target */
  #fm-close { width: 34px; height: 34px; font-size: 23px; top: -6px; right: -6px; }
  .fm-head { padding-right: 34px; }
  #fm-brands { max-height: 42vh; } /* bottom-sheet: keep the list scrollable, footer visible */

  /* the "tap any part" hint rides above the bottom pills, not over them */
  #tap-hint { bottom: 64px; max-width: 92%; font-size: 12.5px; }

  /* Outro: compact promo card at the top — more translucent so the celebration
     scene shows through, and short enough to leave most of the build visible */
  .outro-card {
    left: 8px; right: 8px; top: 10px; bottom: auto; transform: none;
    width: auto; max-width: none; max-height: calc(100% - 20px); overflow-y: auto;
    padding: 13px 16px; gap: 7px;
    background: rgba(255,255,255,0.72); backdrop-filter: blur(11px);
  }
  #outro-logo { height: 32px; }
  .outro-title { font-size: 18px; }
  .outro-sub { font-size: 12px; line-height: 1.38; margin-bottom: 2px; }
  .outro-btn { padding: 9px 14px; font-size: 13.5px; }
  .outro-links { margin-top: 3px; font-size: 12px; }

  /* Cover: don't crush the brand text into a thin column */
  .cover-right { width: min(340px, 84vw); }
  #cover-ribbon { width: 168px; height: 168px; }
  .cr-band { top: 36px; left: -57px; width: 236px; padding: 7px 0; } /* center on corner diagonal (c≈61) → ends run off both edges */
  .cr-band b { font-size: 23px; }
  .cr-band span { font-size: 10px; letter-spacing: .2em; }
  #cover-badges { gap: 7px; bottom: 14px; left: 12px; }
  .cv-hero { padding: 8px 13px 7px; }
  .cv-hero b { font-size: 24px; }
  .cv-chip { padding: 6px 9px 5px; }
  .cv-chip b { font-size: 13px; }

  /* Back | 4 tools | Next must fit ONE row on a 360px phone with Resume cam
     visible (≈330px of buttons) — hence the tight paddings + gaps here */
  #controls { padding: 10px 10px calc(10px + env(safe-area-inset-bottom)); flex-wrap: wrap; gap: 5px; row-gap: 8px; }
  #controls button { padding: 11px 8px; }
  #ctl-tools { gap: 3px; }
  #ctl-tools button { padding: 5px 5px 4px; min-width: 0; }
  /* the embed adds a FIFTH tool (Preview) — slim Back/Next, the tools and
     the gaps so Back + 5 tools + Next hold ONE row even at the 380px dock
     floor (measured: the six-button row ran 389px at the old paddings) */
  body.embed #controls { gap: 8px 4px; }
  body.embed #ctl-tools { gap: 4px; }
  body.embed #controls button { padding: 8px 6px; font-size: 13px; }
  body.embed #ctl-tools button { padding: 4px 4px 3px; }
  body.embed #ctl-tools button span { font-size: 8px; }
  #ctl-tools button span { font-size: 8.5px; }
  /* the step dots get their own full-width row ABOVE the buttons — squeezed
     between Back and the tool group they used to wrap into a tall vertical
     column the moment Resume cam appeared (4 tools + 15 dots never fit 360px) */
  #step-dots { order: -1; flex-basis: 100%; }
}