/* Styled after SendCutSend's site and part builder: Inter Tight, a near-black
   header, red uppercase buttons, blue for links and annotation, flat grey
   parts with a thin dark outline, outlined fields with the label sitting on
   the border, and white panels lifted by a soft shadow. */
:root {
  --ground: #ffffff;
  --surface: #ffffff;
  --surface-2: #f2f2f2;
  --bar: #f4f4f4;
  --ink: #282c2f;
  --ink-2: #454d55;
  --muted: #68737d;
  --line: #e3e3e5;
  --line-strong: #a9a9ae;
  --primary: #cb1217;
  --primary-hover: #b00f13;
  --primary-ink: #ffffff;
  --accent: #509be0;
  --btn: #e5e5e5;
  --btn-hover: #d9d9db;
  --btn-ink: rgba(0, 0, 0, 0.7);
  --slate: #454d55;
  --slate-ink: #ffffff;
  --topbar: #181b1f;
  --hero: #0b0c0d;
  --shadow: 0 0 8px -2px rgba(0, 0, 0, 0.5);
  --shadow-soft: 0 1px 6px -1px rgba(0, 0, 0, 0.18);
  --clawd: #d77757;
  --clawd-edge: #a4553b;
  --metal: #b3b3b3;
  --metal-edge: #1c1f22;
  --steel: #7d7f83;
  --stage: #ffffff;
  --stage-line: rgba(0, 0, 0, 0.05);
  --ok: #2e8540;
  --warn: #b7791f;
  --fail: #cb1217;
  --body: "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --display: var(--body);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --nav-h: 60px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --ground: #121417;
    --surface: #1a1d21;
    --surface-2: #24282d;
    --bar: #16191c;
    --ink: #e9ebed;
    --ink-2: #c3c9cf;
    --muted: #8f99a3;
    --line: #2e3338;
    --line-strong: #4d545c;
    --primary: #e2262c;
    --primary-hover: #f03b40;
    --primary-ink: #ffffff;
    --accent: #6cb0f0;
    --btn: #2c3136;
    --btn-hover: #363c42;
    --btn-ink: #e9ebed;
    --slate: #c3c9cf;
    --slate-ink: #121417;
    --topbar: #0c0d0f;
    --hero: #000000;
    --shadow: 0 0 0 1px #2a2f34, 0 2px 10px -2px rgba(0, 0, 0, 0.6);
    --shadow-soft: 0 0 0 1px #2a2f34;
    --clawd: #de8466;
    --clawd-edge: #f0a68b;
    --metal: #85878b;
    --metal-edge: #dcdee0;
    --steel: #a4a7ab;
    --stage: #16191c;
    --stage-line: rgba(255, 255, 255, 0.045);
    --ok: #5cb883;
    --warn: #deaa47;
    --fail: #f0705f;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --ground: #121417;
  --surface: #1a1d21;
  --surface-2: #24282d;
  --bar: #16191c;
  --ink: #e9ebed;
  --ink-2: #c3c9cf;
  --muted: #8f99a3;
  --line: #2e3338;
  --line-strong: #4d545c;
  --primary: #e2262c;
  --primary-hover: #f03b40;
  --primary-ink: #ffffff;
  --accent: #6cb0f0;
  --btn: #2c3136;
  --btn-hover: #363c42;
  --btn-ink: #e9ebed;
  --slate: #c3c9cf;
  --slate-ink: #121417;
  --topbar: #0c0d0f;
  --hero: #000000;
  --shadow: 0 0 0 1px #2a2f34, 0 2px 10px -2px rgba(0, 0, 0, 0.6);
  --shadow-soft: 0 0 0 1px #2a2f34;
  --clawd: #de8466;
  --clawd-edge: #f0a68b;
  --metal: #85878b;
  --metal-edge: #dcdee0;
  --steel: #a4a7ab;
  --stage: #16191c;
  --stage-line: rgba(255, 255, 255, 0.045);
  --ok: #5cb883;
  --warn: #deaa47;
  --fail: #f0705f;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 16px/1.6 var(--body);
}
.wrap { max-width: 1212px; margin: 0 auto; padding: 32px 16px 56px; display: grid; gap: 48px; }
h1, h2 { font-family: var(--display); font-weight: 700; letter-spacing: -0.3px; line-height: 1.15; margin: 0; text-wrap: balance; }
h1 { font-weight: 800; font-size: clamp(48px, 9vw, 80px); line-height: 1; }
h2 { font-size: clamp(28px, 4vw, 40px); }
h3 { font: 700 16px/1.3 var(--body); margin: 0; }
p { margin: 0; }
.num { font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); font-size: 0.92em; }
.label { font: 600 13.6px/1.3 var(--body); color: var(--ink-2); }
.muted { color: var(--muted); }
a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
section[id] { scroll-margin-top: calc(var(--nav-h) + 16px); }

/* Header */
.topbar { position: sticky; top: 0; z-index: 20; background: var(--topbar); color: #fff; }
.topbar-in { max-width: 1212px; height: var(--nav-h); margin: 0 auto; padding: 0 16px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font: italic 700 21px/1 var(--body); letter-spacing: -0.4px; white-space: nowrap; }
.brand img { border-radius: 6px; }
.topnav { display: flex; gap: 22px; }
.topnav a { color: #fff; text-decoration: none; font: 700 13px/1 var(--body); text-transform: uppercase; white-space: nowrap; padding: 22px 0 19px; border-bottom: 3px solid transparent; }
.topnav a:hover { color: #d3d6d9; }
.topnav a[aria-current="true"] { border-bottom-color: var(--primary); }
.topbar-cta { margin-left: auto; display: flex; gap: 8px; }
.topbar :focus-visible { outline-color: #fff; }

.hero { background: radial-gradient(120% 90% at 50% 0%, #1d2126 0%, var(--hero) 70%); color: #fff; }
.hero-in { max-width: 860px; margin: 0 auto; padding: 72px 16px 80px; display: grid; justify-items: center; gap: 22px; text-align: center; }
.lede { max-width: 62ch; font-size: 18px; line-height: 1.55; color: rgba(255, 255, 255, 0.82); }
.lede strong { color: #fff; font-weight: 700; }
.spec { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.chip { font: 600 13.6px/1 var(--body); font-variant-numeric: tabular-nums; padding: 8px 12px; border-radius: 999px; background: rgba(255, 255, 255, 0.1); color: #fff; white-space: nowrap; }

/* Buttons */
button, .btn {
  font: 700 13.6px/1 var(--body); text-transform: uppercase; letter-spacing: 1px; text-decoration: none;
  color: var(--btn-ink); background: var(--btn); border: 1px solid transparent; border-radius: 8px;
  min-height: 34px; padding: 0 14px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 10px; white-space: nowrap;
}
button:hover, .btn:hover { background: var(--btn-hover); }
button.primary, .btn.primary { background: var(--primary); color: var(--primary-ink); }
button.primary:hover, .btn.primary:hover { background: var(--primary-hover); }
.btn.slate { background: #454d55; color: #fff; }
.btn.slate:hover { background: #56606a; }
.btn.big { font-size: 20px; letter-spacing: 0.5px; min-height: 58px; padding: 0 34px; border-radius: 16px; margin-top: 6px; }
button:disabled, button:disabled:hover { opacity: 0.45; cursor: not-allowed; background: var(--btn); color: var(--btn-ink); }
.toggle { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; color: var(--ink-2); cursor: pointer; user-select: none; }
.toggle input { accent-color: var(--primary); width: 16px; height: 16px; margin: 0; }
input[type="range"] { accent-color: var(--primary); }

/* Stage */
.stage { position: relative; background: var(--stage); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
.stage canvas { display: block; width: 100%; height: clamp(300px, 46vw, 520px); }
.hud { position: absolute; left: 16px; top: 14px; font: 500 13.6px/1.5 var(--body); color: var(--muted); pointer-events: none; font-variant-numeric: tabular-nums; }
.hud b { color: var(--ink); font-weight: 700; }
.stage-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; padding: 14px 16px; background: var(--bar); }
.stage-bar #play { min-width: 84px; }
.stage-bar .grow { flex: 1 1 180px; display: flex; align-items: center; gap: 12px; }
.stage-bar input[type="range"] { flex: 1; min-width: 80px; }
.stage-bar output { font-size: 14.5px; font-weight: 600; min-width: 52px; }

/* Workbench: the settings sit on the right like a part-builder sidebar */
.bench { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 32px; align-items: start; }
.panel { grid-column: 2; grid-row: 1; background: var(--surface); border-radius: 12px; box-shadow: var(--shadow); padding: 22px 20px; display: grid; gap: 22px; position: sticky; top: calc(var(--nav-h) + 16px); max-height: calc(100vh - var(--nav-h) - 32px); overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; }
.main { grid-column: 1; grid-row: 1; display: grid; gap: 56px; min-width: 0; }
.panel-head { display: grid; gap: 4px; }
.panel-head h2 { font-size: 20.8px; letter-spacing: 0; }
.panel-head p { font-size: 14.5px; color: var(--muted); line-height: 1.45; }

.field { position: relative; }
.flabel { position: absolute; left: 9px; top: -8px; z-index: 1; padding: 0 4px; background: var(--surface); font: 400 13.6px/16px var(--body); color: var(--ink); pointer-events: none; }
.field.box { display: flex; align-items: center; gap: 12px; border: 1px solid var(--line); border-radius: 8px; padding: 14px 12px 12px; }
.field.box input[type="range"] { flex: 1; min-width: 0; margin: 0; }
.field.box output { font-size: 15px; white-space: nowrap; }
select {
  font: 400 16px var(--body); color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px;
  height: 44px; padding: 4px 11px 0; width: 100%;
}
select:hover, .field.box:hover { border-color: var(--line-strong); }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; border: 1px solid var(--line); border-radius: 8px; padding: 12px 4px 4px; }
.seg button { text-transform: none; letter-spacing: 0; font: 500 15px/1 var(--body); color: var(--ink-2); background: transparent; border-radius: 999px; min-height: 32px; }
.seg button:hover { background: var(--surface-2); }
.seg button[aria-pressed="true"] { background: var(--slate); color: var(--slate-ink); font-weight: 600; }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 12px; padding-top: 18px; border-top: 1px solid var(--line); }
.stat .label { font: 500 12.8px/1.3 var(--body); color: var(--muted); }
.stat .v { font: 700 19px/1.25 var(--body); font-variant-numeric: tabular-nums; }
.stat .u { font: 400 12.8px/1.3 var(--body); color: var(--muted); font-variant-numeric: tabular-nums; }

.checks { display: grid; gap: 8px; padding: 18px 0 0; border-top: 1px solid var(--line); list-style: none; margin: 0; }
.checks li { display: grid; grid-template-columns: 14px 1fr; gap: 8px; font-size: 14px; line-height: 1.45; color: var(--ink-2); }
.checks .dot { width: 9px; height: 9px; border-radius: 50%; margin-top: 6px; }
.checks .ok .dot { background: var(--ok); }
.checks .warn .dot { background: var(--warn); }
.checks .fail .dot { background: var(--fail); }
.checks .fail { color: var(--fail); font-weight: 600; }

.sec-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 14px 24px; margin-bottom: 20px; }
.sec-head p { max-width: 62ch; color: var(--ink-2); margin-top: 8px; }
.export { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

/* Cut list, laid out like a template picker */
.parts { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.part { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow-soft); padding: 14px; display: grid; grid-template-rows: auto auto 1fr auto; gap: 10px; }
.part svg { width: 100%; height: 118px; display: block; }
.part .row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.part .qty { font: 700 12.8px/1 var(--body); font-variant-numeric: tabular-nums; background: var(--slate); color: var(--slate-ink); padding: 5px 8px; border-radius: 6px; }
.part .file { font: 400 12px/1.35 var(--mono); color: var(--muted); overflow-wrap: anywhere; margin-top: 2px; }
.part .dims { font-size: 13.6px; line-height: 1.45; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.part button { width: 100%; font-size: 12px; min-height: 32px; }
.part .tag { font: 700 11.5px/1.2 var(--body); letter-spacing: 0.8px; text-transform: uppercase; color: var(--clawd-edge); margin-top: 4px; }
.order-note { margin-top: 18px; padding: 16px 18px; border: 2px dashed var(--accent); border-radius: 10px; font-size: 14.5px; color: var(--ink-2); max-width: 82ch; }
.order-note b { color: var(--ink); }

.two { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.card { background: var(--surface); border-radius: 12px; box-shadow: var(--shadow); padding: 18px; display: grid; gap: 12px; min-width: 0; }
.card > .label { font: 700 16px/1.35 var(--body); color: var(--ink); }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th { text-align: left; font: 700 11.5px/1.2 var(--body); letter-spacing: 0.8px; text-transform: uppercase; color: var(--muted); padding: 0 10px 9px 0; border-bottom: 1px solid var(--line); }
td { padding: 9px 10px 9px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.stackseq { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.pc { font: 500 12.5px/1 var(--body); padding: 5px 8px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); white-space: nowrap; }
.pc.arm { background: var(--slate); color: var(--slate-ink); border-color: var(--slate); }
.pc.plate { background: var(--clawd); color: #fff; border-color: var(--clawd-edge); }
.pc.gap { background: transparent; border-style: dashed; border-color: var(--line-strong); color: var(--muted); }
.layers { display: grid; gap: 6px; }
.layer { display: grid; grid-template-columns: 64px 1fr; gap: 10px; align-items: center; }
.layer .ln { font: 600 12.8px/1 var(--body); color: var(--muted); }
svg text { font-family: var(--body); }
#dial { overflow: visible; }

ol.steps { margin: 0; padding-left: 24px; display: grid; gap: 12px; max-width: 78ch; color: var(--ink-2); }
ol.steps li { padding-left: 4px; }
ol.steps li::marker { font: 700 15px var(--body); color: var(--primary); }

.footbar { background: var(--bar); border-top: 1px solid var(--line); }
.foot { max-width: 1212px; margin: 0 auto; padding: 28px 16px calc(env(safe-area-inset-bottom, 0px) + 36px); font-size: 13.6px; color: var(--muted); }

.toast { position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom, 0px) + 20px); transform: translateX(-50%); background: var(--topbar); color: #fff; font: 600 14px var(--body); padding: 11px 16px; border-radius: 8px; box-shadow: var(--shadow); opacity: 0; transition: opacity 0.2s; pointer-events: none; max-width: calc(100% - 32px); z-index: 30; }
.toast.show { opacity: 1; }

@media (max-width: 1060px) {
  .topnav { display: none; }
}
@media (max-width: 900px) {
  .bench { grid-template-columns: 1fr; }
  .panel, .main { grid-column: 1; grid-row: auto; }
  .panel { position: static; max-height: none; overflow: visible; }
  .two { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .cta-files { display: none; }
  .hero-in { padding: 48px 16px 56px; }
  .lede { font-size: 16.5px; }
}
@media (prefers-reduced-motion: reduce) {
  .toast { transition: none; }
}