:root {
  color-scheme: light;
  --ground: #E9E9EB;
  --stage: #DCDCDE;
  --paper: #F6F6F7;
  --raised: #FFFFFF;
  --ink: #1D1D1F;
  --muted: #5E5E63;
  --line: rgba(29, 29, 31, .12);
  --heat: #E5522D;
  --heat-ink: #B23A1E;
  --cold: #4F7894;
  --rest: #A9A29B;
  --amber: #B7791F;
  --chip: rgba(255, 255, 255, .72);
  --chip-bd: rgba(29, 29, 31, .16);
  --sel: #1D1D1F;
  --sel-fg: #FFFFFF;
  --focus: #4F7894;
  --g-bg: #FFFFFF;
  --g-bd: #747775;
  --g-fg: #1F1F1F;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ground: #111113;
    --stage: #2A2A2E;
    --paper: #1C1C1F;
    --raised: #232327;
    --ink: #F4F4F5;
    --muted: #9A9AA0;
    --line: rgba(244, 244, 245, .13);
    --heat: #F2643D;
    --heat-ink: #FF9A7A;
    --cold: #7FA6BE;
    --rest: #8A847E;
    --amber: #E0A84F;
    --chip: rgba(255, 255, 255, .06);
    --chip-bd: rgba(255, 255, 255, .18);
    --sel: #F4F4F5;
    --sel-fg: #1D1D1F;
    --focus: #7FA6BE;
    --g-bg: #131314;
    --g-bd: #8E918F;
    --g-fg: #E3E3E3;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip; /* never a sideways page scroll; clip keeps sticky positioning working */
}
[hidden] { display: none !important; }
a { color: var(--heat-ink); }
a:focus-visible, button:focus-visible, textarea:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.eyebrow {
  margin: 0;
  font: 600 11px/1.4 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--heat-ink);
}
h1 { margin: 0; font-size: 32px; line-height: 1.08; letter-spacing: -.02em; font-weight: 700; text-wrap: balance; }
h2 { margin: 0; font-size: 22px; line-height: 1.2; letter-spacing: -.01em; text-wrap: balance; }
h3 { margin: 0; font-size: 17px; line-height: 1.3; }
.lede { margin: 0; font-size: 16px; max-width: 62ch; }
.fine { margin: 0; font-size: 12.5px; line-height: 1.5; color: var(--muted); max-width: 62ch; }
.error { margin: 0; font-size: 14px; color: var(--heat-ink); font-weight: 600; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  border: 0;
  background: var(--sel);
  color: var(--sel-fg);
  font: 600 15px/1 var(--sans);
  text-decoration: none;
  cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--chip-bd); }
.btn[disabled] { opacity: .5; cursor: progress; }
.linkish {
  background: none;
  border: 0;
  padding: 4px 2px;
  font: inherit;
  font-size: 13px;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

/* Google button, per Google's sign-in branding */
.gbtn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 46px;
  padding: 0 20px 0 16px;
  border-radius: 999px;
  border: 1px solid var(--g-bd);
  background: var(--g-bg);
  color: var(--g-fg);
  font: 500 15px/1 var(--sans);
  cursor: pointer;
}
.gbtn:hover { box-shadow: 0 1px 3px rgba(0, 0, 0, .2); }
.gbtn[disabled] { opacity: .6; cursor: progress; }
.gbtn svg { flex: none; }

/* Chips: checkboxes styled as pills */
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; margin: 0; }
.chip label {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--chip-bd);
  background: var(--chip);
  font-size: 14px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color .15s ease, color .15s ease;
}
@media (hover: hover) { .chip label:hover { border-color: var(--ink); } }
.chip input:checked + label { background: var(--sel); color: var(--sel-fg); border-color: transparent; }
.chip input:focus-visible + label { outline: 2px solid var(--focus); outline-offset: 2px; }

/* Fields */
textarea, input[type="text"], input[type="tel"] {
  width: 100%;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--chip);
  border: 1px solid var(--chip-bd);
  border-radius: 12px;
  padding: 9px 12px;
}
textarea { resize: vertical; min-height: 64px; }
textarea::placeholder, input::placeholder { color: var(--muted); opacity: 1; }
.field { display: grid; gap: 6px; }
.field > label { font-weight: 600; }
.field .sub { font-weight: 400; color: var(--muted); font-size: 13.5px; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; display: grid; gap: 8px; }
legend { padding: 0; font-weight: 600; font-size: 15px; margin-bottom: 8px; }
legend .sub { display: block; font-weight: 400; font-size: 13.5px; color: var(--muted); }

/* Save status */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  z-index: 30;
  max-width: calc(100vw - 32px);
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--sel);
  color: var(--sel-fg);
  font: 500 13px/1.35 var(--sans);
  text-align: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .18);
  pointer-events: none;
}
.toast.warn { background: var(--heat); color: #FFFFFF; }

/* The prototype's SCREEN pill, mirrored beside it */
:root { --pill-bg: #FFFFFF; --pill-bd: rgba(0, 0, 0, .12); --pill-fg: #1A1A1A; --pill-k: rgba(0, 0, 0, .5); }
@media (prefers-color-scheme: dark) {
  :root { --pill-bg: var(--raised); --pill-bd: var(--line); --pill-fg: var(--ink); --pill-k: var(--muted); }
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  min-width: 0;
  padding: 7px 13px;
  border-radius: 99px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-bd);
  color: var(--pill-fg);
  font: 500 12px/1.3 var(--mono);
}
.pill-k { flex: none; color: var(--pill-k); }
.pill-v { min-width: 0; overflow-wrap: anywhere; }

/* Reactions: the same colours on the test page and the results */
.r-loved { background: var(--cold); }
.r-fine { background: var(--rest); }
.r-confusing { background: var(--amber); }
.r-broken { background: var(--heat); }

/* Progress dots: hollow (not yet), half (seen), filled in the reaction colour (rated) */
.dot { display: block; width: 12px; height: 12px; border-radius: 50%; border: 1.5px solid var(--muted); background: transparent; }
.dot.seen { background: linear-gradient(90deg, var(--muted) 50%, transparent 50%); }
.dot.r-loved { border-color: var(--cold); background: var(--cold); }
.dot.r-fine { border-color: var(--rest); background: var(--rest); }
.dot.r-confusing { border-color: var(--amber); background: var(--amber); }
.dot.r-broken { border-color: var(--heat); background: var(--heat); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}