/* Quote engine. Same system as nabilshehadeh.org: dark only, one accent, surfaces 16px, inner 10px, controls pill. */

:root {
  --bg: #0e0e0e;
  --tile: #161616;
  --tile-2: #1f1f1f;
  --ink: #ededed;
  --ink-2: #a3a3a3;
  --ink-3: #7c7c7c;
  --line: #262626;
  --accent: #1F5FBF;
  --accent-hi: #2b6dd1;
  --ring: #4f86d9;
  --warn: #e0a43a;   /* design-check warnings only; always paired with an icon and text */
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink-2); font: 400 15.5px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
h1, h2, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button, select, input { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; border-radius: 8px; }
.num { font-variant-numeric: tabular-nums; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* Top bar */
.top { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.back, .top-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-2); transition: color 200ms ease; }
.back i { transition: transform 250ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) {
  .back:hover, .top-link:hover { color: var(--ink); }
  .back:hover i { transform: translateX(-2px); }
}

.intro { padding: 12px 0 24px; max-width: 640px; }
.intro h1 { font-size: clamp(26px, 3.4vw, 34px); line-height: 1.15; letter-spacing: -.03em; color: var(--ink); font-weight: 500; }
.intro p { margin-top: 10px; }

/* Studio: viewer left, quote right */
.studio { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4.4fr); gap: 16px; align-items: start; }

.viewer {
  position: relative; aspect-ratio: 16 / 11;
  border-radius: 16px; overflow: hidden;
  background: radial-gradient(120% 90% at 50% 35%, #1c1d20 0%, #131314 70%);
  box-shadow: 0 0 0 1px var(--line);
  touch-action: none;
}
.viewer canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; }
.viewer canvas:active { cursor: grabbing; }

.view-modes {
  position: absolute; left: 12px; top: 12px; display: flex; padding: 3px; gap: 2px;
  border-radius: 999px; background: rgb(14 14 14 / .7); box-shadow: 0 0 0 1px var(--line);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.view-modes button { height: 28px; padding: 0 12px; border-radius: 999px; font-size: 13px; color: var(--ink-2); transition: background-color 200ms ease, color 200ms ease; }
.view-modes button[aria-checked="true"] { background: var(--tile-2); color: var(--ink); }

.legend {
  position: absolute; left: 12px; bottom: 12px; right: 12px;
  display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12px; color: var(--ink-2);
  opacity: 0; transform: translateY(4px); transition: opacity 200ms ease, transform 250ms var(--ease-out); pointer-events: none;
}
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 9px; height: 9px; border-radius: 3px; background: var(--c); }
.viewer.mode-draft .legend { opacity: 1; transform: none; }

.hint { position: absolute; right: 14px; bottom: 12px; font-size: 12px; color: var(--ink-3); transition: opacity 300ms ease; pointer-events: none; }
.viewer.mode-draft .hint, .viewer.touched .hint { opacity: 0; }

.drop {
  position: absolute; inset: 10px; border-radius: 10px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  border: 1.5px dashed color-mix(in oklab, var(--accent-hi) 70%, transparent);
  background: rgb(14 14 14 / .75); color: var(--ink); font-size: 14px;
  opacity: 0; transform: scale(.98); transition: opacity 150ms ease, transform 200ms var(--ease-out); pointer-events: none;
}
.drop i { font-size: 22px; color: var(--accent-hi); }
.viewer.dragging .drop { opacity: 1; transform: none; }

/* Part picker */
.parts { margin-top: 12px; }
.samples { display: flex; flex-wrap: wrap; gap: 6px; }
.part-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 8px; }
.chip {
  position: relative;
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px; padding: 0 13px; border-radius: 999px;
  font-size: 13.5px; color: var(--ink-2); cursor: pointer;
  box-shadow: inset 0 0 0 1px var(--line);
  transition: background-color 200ms ease, color 200ms ease, box-shadow 200ms ease, transform 160ms var(--ease-out);
}
.chip i { font-size: 14px; }
.chip:active { transform: scale(.97); }
.chip[aria-pressed="true"] { background: var(--tile-2); color: var(--ink); box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--accent) 60%, var(--line)); }
@media (hover: hover) and (pointer: fine) { .chip:hover { color: var(--ink); background: var(--tile); } }
.units {
  height: 32px; padding: 0 28px 0 12px; border-radius: 999px; border: 0;
  background: var(--tile) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23a3a3a3' fill='none' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 11px center;
  -webkit-appearance: none; appearance: none; font-size: 13px; color: var(--ink-2); cursor: pointer;
}
.file-msg { min-height: 20px; margin-top: 8px; font-size: 13px; color: var(--ink-3); }
.file-msg.err { color: var(--warn); }

/* Quote panel */
.panel {
  position: sticky; top: 16px;
  padding: 20px; border-radius: 16px; background: var(--tile);
  box-shadow: 0 0 0 1px var(--line);
}
.part-name { color: var(--ink); font-weight: 500; font-size: 16px; }
.part-meta { font-size: 13px; color: var(--ink-3); margin-top: 2px; }

.qty { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 18px; padding: 3px; border-radius: 999px; background: var(--bg); box-shadow: inset 0 0 0 1px var(--line); }
.qty button { position: relative; z-index: 1; height: 30px; border-radius: 999px; font: 400 13px/1 var(--mono); color: var(--ink-3); transition: color 200ms ease; }
.qty button[aria-checked="true"] { color: var(--ink); }
@media (hover: hover) and (pointer: fine) { .qty button:hover { color: var(--ink-2); } .qty button[aria-checked="true"]:hover { color: var(--ink); } }
.qty-thumb { position: absolute; top: 3px; bottom: 3px; left: 3px; border-radius: 999px; background: var(--tile-2); box-shadow: 0 0 0 1px #2e2e2e; transition: transform 260ms var(--ease-out), width 260ms var(--ease-out); }

.price-block { margin-top: 20px; }
.price { color: var(--ink); }
#price { font-size: 38px; font-weight: 500; letter-spacing: -.035em; font-variant-numeric: tabular-nums; display: inline-block; transition: opacity 120ms ease, filter 120ms ease; }
#price.swap { opacity: .4; filter: blur(2px); }
.per { font-size: 14px; color: var(--ink-3); }
.range { position: relative; height: 14px; margin-top: 10px; }
.range::before { content: ""; position: absolute; left: 0; right: 0; top: 6px; height: 1px; background: var(--line); }
.range-band { position: absolute; top: 4px; height: 6px; border-radius: 999px; background: color-mix(in oklab, var(--accent-hi) 55%, transparent); transition: left 300ms var(--ease-out), width 300ms var(--ease-out); }
.range-dot { position: absolute; top: 2px; width: 10px; height: 10px; margin-left: -5px; border-radius: 50%; background: var(--ink); box-shadow: 0 0 0 2px var(--tile); transition: left 300ms var(--ease-out); }
.range-label { font-size: 13px; color: var(--ink-3); margin-top: 4px; }
.why { font-size: 13.5px; margin-top: 10px; color: var(--ink-2); }

.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.facts dt { font-size: 12.5px; color: var(--ink-3); }
.facts dd { color: var(--ink); font-variant-numeric: tabular-nums; font-size: 15px; }

.sub { font-size: 13px; color: var(--ink-3); margin-bottom: 8px; }
.rates .sub { display: flex; align-items: center; justify-content: space-between; }
.checks { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
#flags { display: grid; gap: 6px; }
.flag { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 10px; padding: 10px 12px; border-radius: 10px; background: var(--bg); transition: box-shadow 200ms ease, background-color 200ms ease; cursor: default; }
.flag i { font-size: 16px; margin-top: 2px; color: var(--warn); }
.flag.ok i { color: var(--accent-hi); }
.flag-title { color: var(--ink); font-size: 14px; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; }
.flag-text { font-size: 13px; color: var(--ink-2); margin-top: 2px; }
.save { font: 400 12px/1 var(--mono); color: var(--accent-hi); white-space: nowrap; }
.flag[data-focus]:is(:hover, :focus-visible, .on) { background: #121315; box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--warn) 45%, transparent); }

.breakdown { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.breakdown summary { list-style: none; cursor: pointer; font-size: 13px; color: var(--ink-3); display: flex; align-items: center; justify-content: space-between; transition: color 200ms ease; }
.breakdown summary::-webkit-details-marker { display: none; }
.breakdown summary i { transition: transform 250ms var(--ease-out); }
.breakdown[open] summary i { transform: rotate(180deg); }
@media (hover: hover) and (pointer: fine) { .breakdown summary:hover { color: var(--ink-2); } }
#breakdown { display: grid; gap: 4px; margin-top: 10px; }
#breakdown div { display: flex; justify-content: space-between; font-size: 13.5px; }
#breakdown dd { font: 400 13px/1.6 var(--mono); color: var(--ink); }
#breakdown .total { border-top: 1px solid var(--line); padding-top: 6px; margin-top: 4px; }
#breakdown .adj dd { color: var(--accent-hi); }

/* How it works */
.how { margin-top: 72px; }
.how h2 { font-size: 16px; font-weight: 500; color: var(--ink); margin-bottom: 16px; }
.how-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: 48px; }
.how-copy p + p { margin-top: 12px; }
.how-copy { max-width: 62ch; }
.honest { color: var(--ink-3); font-size: 14.5px; }
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 24px; }
.metrics div { display: flex; flex-direction: column-reverse; }
.metrics dt { font-size: 12.5px; color: var(--ink-3); line-height: 1.4; }
.metrics dd { color: var(--ink); font-size: 22px; font-weight: 500; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.metrics dd s { color: var(--ink-3); font-size: 15px; font-weight: 400; text-decoration-thickness: 1px; margin-right: 6px; }
.imp-title { margin-top: 24px; }
.imp { display: grid; gap: 6px; }
.imp li { display: grid; grid-template-columns: 128px minmax(0, 1fr) 44px; gap: 10px; align-items: center; font-size: 13px; }
.imp-bar { height: 8px; border-radius: 0 4px 4px 0; background: #6e6e6e; transform-origin: left; }
.imp li:first-child .imp-bar { background: var(--accent-hi); }
.imp-val { font: 400 12px/1 var(--mono); color: var(--ink-2); text-align: right; }

.rates { margin-top: 36px; }
.reset { font-size: 13px; color: var(--ink-3); transition: color 200ms ease; }
@media (hover: hover) and (pointer: fine) { .reset:hover { color: var(--ink); } }
.rate-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.rate { display: grid; gap: 6px; padding: 12px 14px; border-radius: 10px; background: var(--tile); }
.rate label { font-size: 12.5px; color: var(--ink-2); }
.rate-in { display: flex; align-items: center; gap: 6px; }
.rate input {
  width: 100%; min-width: 0; height: 32px; padding: 0 10px; border-radius: 8px; border: 0;
  background: var(--bg); box-shadow: inset 0 0 0 1px var(--line); color: var(--ink);
  font: 400 14px/1 var(--mono); transition: box-shadow 200ms ease;
}
.rate input:focus { outline: none; box-shadow: inset 0 0 0 1px var(--ring); }
.rate .unit { font-size: 12.5px; color: var(--ink-3); white-space: nowrap; }

.foot { margin: 64px 0 40px; font-size: 13.5px; color: var(--ink-3); }
.foot a { color: var(--ink-2); text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; }

/* Tooltip (pointer devices) */
[data-tip]::after {
  content: attr(data-tip); position: absolute; left: 50%; bottom: calc(100% + 6px);
  padding: 5px 9px; border-radius: 8px; background: var(--ink); color: var(--bg);
  font: 500 12px/1 var(--sans); white-space: nowrap; pointer-events: none;
  opacity: 0; transform: translateX(-50%) translateY(2px) scale(.97); transform-origin: bottom center;
  transition: opacity 125ms ease-out, transform 125ms var(--ease-out);
}
@media (hover: hover) and (pointer: fine) { [data-tip]:hover::after { opacity: 1; transform: translateX(-50%); transition-delay: 400ms; } }

.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 50; padding: 9px 14px; border-radius: 999px;
  background: var(--ink); color: var(--bg); font-size: 13.5px; white-space: nowrap;
  opacity: 0; transform: translate(-50%, 8px) scale(.97); transition: opacity 250ms ease, transform 350ms var(--ease-out); pointer-events: none;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Skeleton while the model loads */
.panel.loading #price, .panel.loading .part-meta { color: transparent; border-radius: 6px; background: linear-gradient(90deg, #1b1b1b, #242424, #1b1b1b); background-size: 200% 100%; animation: shimmer 1.3s linear infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

@media (max-width: 900px) {
  .studio { grid-template-columns: 1fr; }
  .panel { position: static; }
  .how-grid { grid-template-columns: 1fr; gap: 32px; }
  .rate-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 420px) {
  .wrap { padding: 0 16px; }

  .imp li { grid-template-columns: 104px minmax(0, 1fr) 40px; }
  #price { font-size: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  .qty-thumb, .range-band, .range-dot, .legend, .drop { transition: none; }
  .panel.loading #price { animation: none; }
}