:root {
  --paper: #e9edf4;
  --panel: #ffffff;
  --ink: #13203f;
  --muted: #59647f;
  --line: #cfd6e3;
  --royal: #1f45c8;
  --gold: #f4b400;
  --gold-ink: #13203f;
  --field: #f3f5f9;
  --warn-bg: #fff4d6;
  --warn-ink: #6a4b00;
  --display: "Graduate", "Rockwell", serif;
  --body: "Barlow", system-ui, sans-serif;
  --cond: "Barlow Semi Condensed", "Barlow", system-ui, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0d1530; --panel: #16214a; --ink: #e9edf8; --muted: #a2adca; --line: #2b3a6c;
    --royal: #7f9bff; --field: #1d2a59; --warn-bg: #3a2f0c; --warn-ink: #ffd877; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0d1530; --panel: #16214a; --ink: #e9edf8; --muted: #a2adca; --line: #2b3a6c;
  --royal: #7f9bff; --field: #1d2a59; --warn-bg: #3a2f0c; --warn-ink: #ffd877; color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.5 var(--body);
}
a { color: var(--royal); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* Header: the wordmark is stacked like a layered pendant */
.top {
  display: flex; gap: 24px; align-items: flex-end; justify-content: space-between;
  padding: 28px clamp(16px, 4vw, 48px) 20px; max-width: 1440px; margin: 0 auto;
}
.wordmark {
  margin: 0; font: 400 clamp(34px, 5.4vw, 64px)/0.95 var(--display); letter-spacing: 0.01em;
  color: var(--royal);
  text-shadow:
    1.5px 1.5px 0 var(--panel), -1.5px -1.5px 0 var(--panel), 1.5px -1.5px 0 var(--panel), -1.5px 1.5px 0 var(--panel),
    4px 4px 0 var(--gold), 5px 5px 0 var(--gold), 6px 6px 0 var(--gold);
}
.wordmark span { display: inline-block; }
.lede { margin: 14px 0 0; max-width: 56ch; color: var(--muted); font-size: 17px; }
.coffee {
  flex: none; display: inline-flex; align-items: center; gap: 8px;
  background: var(--gold); color: var(--gold-ink); text-decoration: none;
  font: 700 16px/1 var(--cond); padding: 12px 16px; border-radius: 999px;
  box-shadow: 0 2px 0 #b98700;
}
.coffee svg { width: 22px; height: 22px; }
.coffee:hover { filter: brightness(1.05); }

.layout {
  display: grid; grid-template-columns: minmax(320px, 420px) 1fr; gap: 24px;
  padding: 0 clamp(16px, 4vw, 48px) 32px; max-width: 1440px; margin: 0 auto; align-items: start;
}
.controls { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.step {
  margin: 0; border: 1px solid var(--line); background: var(--panel); border-radius: 14px;
  padding: 14px 16px 16px; min-width: 0;
}
.step legend, .step summary {
  font: 700 19px/1 var(--cond); padding: 0 6px; margin-left: -6px; display: flex; align-items: center; gap: 10px;
}
.step summary { cursor: pointer; margin: 0; padding: 2px 0; }
.step legend b, .step summary b {
  display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%;
  background: var(--royal); color: #fff; font: 400 15px/1 var(--display);
}
.printer[open] summary { margin-bottom: 10px; }

.row { display: grid; grid-template-columns: 118px 1fr auto; align-items: center; gap: 10px; margin-top: 12px; }
.row > label { font: 600 15px/1.2 var(--cond); color: var(--muted); }
.row output { font: 600 15px/1 var(--cond); min-width: 64px; text-align: right; font-variant-numeric: tabular-nums; }
.row select, .row textarea, .row input[type="number"] {
  font: 500 15px/1.3 var(--body); color: var(--ink); background: var(--field);
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; min-width: 0; width: 100%;
}
.row select, .row textarea { grid-column: span 2; }
.row textarea { resize: vertical; }
.row input[type="number"] { width: 72px; }
input[type="range"] { width: 100%; accent-color: var(--royal); min-width: 0; }

.seg { display: flex; gap: 6px; margin-top: 12px; flex-wrap: wrap; }
.seg label { flex: 1 1 0; min-width: 0; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; text-align: center;
  padding: 10px 8px; border: 1.5px solid var(--line); border-radius: 10px; cursor: pointer;
  font: 600 15px/1.15 var(--cond); color: var(--muted); background: var(--field); height: 100%;
}
.seg span svg { width: 54px; height: 26px; }
.seg input:checked + span { border-color: var(--royal); color: var(--ink); background: var(--panel); box-shadow: inset 0 0 0 1.5px var(--royal); }
.seg input:focus-visible + span { outline: 3px solid var(--gold); outline-offset: 1px; }
.seg input:disabled + span { opacity: 0.45; cursor: not-allowed; }
.seg.small span { padding: 8px 6px; }
.seg.tiny { margin: 0; grid-column: span 2; }
.seg.tiny span { padding: 6px; }
.seg.tabs { margin: 0; }
.seg.tabs label { flex: none; }
.seg.tabs span { padding: 7px 14px; }

.swatches { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 12px; align-items: center; }
.sw { display: inline-flex; align-items: center; gap: 8px; font: 600 15px/1 var(--cond); cursor: pointer; }
.sw input[type="color"] {
  width: 34px; height: 34px; padding: 0; border: 2px solid var(--line); border-radius: 50%; background: none; cursor: pointer;
}
.sw input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
.sw input[type="color"]::-webkit-color-swatch { border: none; border-radius: 50%; }
.sw input[type="color"]::-moz-color-swatch { border: none; border-radius: 50%; }
.check { display: inline-flex; gap: 6px; align-items: center; font: 600 15px/1 var(--cond); }
.hint { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.hint:empty { display: none; }

.drop {
  display: flex; align-items: center; gap: 12px; padding: 14px; border: 2px dashed var(--line); border-radius: 12px;
  cursor: pointer; background: var(--field); color: var(--muted); font-size: 14px;
}
.drop.over { border-color: var(--royal); }
.drop input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.drop:focus-within { outline: 3px solid var(--gold); }
.drop strong { color: var(--ink); }
.drop img { width: 56px; height: 56px; object-fit: contain; display: none; background: repeating-conic-gradient(#0001 0 25%, #0000 0 50%) 0 0/12px 12px; border-radius: 6px; }
.drop.has img { display: block; }
button.link { background: none; border: 0; padding: 4px 0; margin-top: 4px; color: var(--royal); font: 600 14px var(--cond); cursor: pointer; text-decoration: underline; }

.detected { margin-top: 14px; }
.detected h3, .tiers h3 { margin: 0 0 6px; font: 700 15px/1.2 var(--cond); color: var(--muted); }
.detected canvas { width: 100%; height: auto; display: block; margin: 0 auto; cursor: crosshair; border-radius: 8px; background: repeating-conic-gradient(#8881 0 25%, #0000 0 50%) 0 0/14px 14px; }
.chips { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.chip { display: grid; grid-template-columns: 28px 1fr auto; gap: 10px; align-items: center; font: 600 15px/1.2 var(--cond); }
.chip i { width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--line); }
.chip select { font: 500 14px var(--body); background: var(--field); color: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 5px 6px; }
.chip small { color: var(--muted); font-weight: 500; }

.tiers { margin-top: 14px; display: flex; flex-direction: column; gap: 4px; }
.tier { display: grid; grid-template-columns: 34px 1fr 108px; gap: 10px; align-items: center; padding: 6px 0; border-top: 1px solid var(--line); }
.tier:first-of-type { border-top: 0; }
.tier .name { font: 600 15px/1.2 var(--cond); }
.tier .name small { display: block; color: var(--muted); font-weight: 500; }
.tier label.th { display: flex; align-items: center; gap: 4px; font: 500 14px var(--cond); color: var(--muted); }
.tier input[type="number"] { width: 64px; font: 500 15px var(--body); background: var(--field); color: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 5px 6px; }

/* Stage */
/* The preview stays pinned while the options scroll past it */
.stage {
  position: sticky; top: 16px; display: flex; flex-direction: column; gap: 10px; min-width: 0;
  height: calc(100vh - 32px); height: calc(100dvh - 32px);
}
.viewbar { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.busy { font: 600 14px var(--cond); color: var(--muted); }
.viewer {
  flex: 1 1 auto; min-height: 260px; border-radius: 16px; overflow: hidden; position: relative;
  background: radial-gradient(120% 90% at 50% 20%, #f7f8fb 0%, #d7dde9 100%);
  border: 1px solid var(--line); touch-action: none;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .viewer { background: radial-gradient(120% 90% at 50% 20%, #26335f 0%, #111a3a 100%); } }
:root[data-theme="dark"] .viewer { background: radial-gradient(120% 90% at 50% 20%, #26335f 0%, #111a3a 100%); }
.viewer canvas { display: block; }
.plates { display: flex; gap: 8px; flex-wrap: wrap; }
.plates button {
  font: 600 14px/1.2 var(--cond); color: var(--ink); background: var(--panel); border: 1.5px solid var(--line);
  border-radius: 10px; padding: 8px 10px; cursor: pointer; display: inline-flex; gap: 8px; align-items: center; text-align: left;
}
.plates button[aria-pressed="true"] { border-color: var(--royal); box-shadow: inset 0 0 0 1.5px var(--royal); }
.plates i { width: 14px; height: 14px; border-radius: 50%; flex: none; border: 1px solid #0003; }
.warn { max-height: 22vh; overflow: auto; flex: none; background: var(--warn-bg); color: var(--warn-ink); border-radius: 10px; padding: 10px 14px; font-size: 14px; }
.warn:empty { display: none; }
.warn p { margin: 0; }
.warn p + p { margin-top: 6px; }
.go {
  font: 400 22px/1 var(--display); color: #fff; background: var(--royal); border: 0; border-radius: 14px;
  padding: 18px 20px; cursor: pointer; box-shadow: 0 4px 0 var(--gold);
}
.go:hover { filter: brightness(1.08); }
.go:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--gold); }
.go:disabled { opacity: 0.5; cursor: wait; }

.guide { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.guide h2 { margin: 0 0 4px; font: 400 22px/1.2 var(--display); }
.guide h3 { margin: 16px 0 6px; font: 700 17px/1.2 var(--cond); }
.guide ul, .guide ol { margin: 0; padding-left: 20px; }
.guide li { margin: 4px 0; }
.guide li::marker { color: var(--muted); }
.guide .dot { display: inline-block; width: 12px; height: 12px; border-radius: 50%; border: 1px solid #0003; vertical-align: -1px; margin: 0 4px 0 2px; }
.pause { display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; align-items: baseline; padding: 10px 12px; border-radius: 10px; background: var(--field); margin: 6px 0; }
.pause .big { font: 400 26px/1 var(--display); color: var(--royal); grid-row: span 2; }
.pause .big small { display: block; font: 600 12px/1.4 var(--cond); color: var(--muted); }
.stats { display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--muted); font: 600 15px var(--cond); margin-top: 4px; }
.stats b { color: var(--ink); }

.foot { max-width: 1440px; margin: 0 auto; padding: 8px clamp(16px, 4vw, 48px) 40px; color: var(--muted); font-size: 14px; }
.foot p { margin: 4px 0; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .stage {
    order: -1; top: 0; z-index: 5; height: auto; background: var(--paper);
    margin: 0 calc(-1 * clamp(16px, 4vw, 48px)); padding: 8px clamp(16px, 4vw, 48px) 10px;
    border-bottom: 1px solid var(--line);
  }
  .viewer { flex: none; height: 36vh; min-height: 200px; }
  .warn { max-height: 12vh; }
  .go { font-size: 18px; padding: 12px 16px; }
  .top { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 420px) {
  .row { grid-template-columns: 96px 1fr auto; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

.picktools { display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: center; margin-top: 6px; }