:root {
  --paper: #f4f2ec;
  --paper-raised: #fbfaf7;
  --ink: #171714;
  --muted: #77746c;
  --line: #d8d4ca;
  --line-strong: #aaa59a;
  --accent: #ea5f3f;
  --accent-soft: #f2c9bb;
  --max-width: 980px;
}

* { box-sizing: border-box; }

html {
  color-scheme: light;
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% -20%, rgba(255,255,255,.9), transparent 42rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

button, input { font: inherit; }
button { color: inherit; }

.page-shell {
  width: min(calc(100% - 36px), var(--max-width));
  margin: 0 auto;
  padding: 84px 0 50px;
}

.intro {
  max-width: 740px;
  margin-bottom: 64px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

h1, h2 {
  margin: 0;
  font-weight: 560;
  letter-spacing: -.045em;
  line-height: .98;
}

h1 {
  max-width: 800px;
  font-size: clamp(3.2rem, 9vw, 6.8rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.lede {
  max-width: 680px;
  margin: 28px 0 0;
  color: #4f4c46;
  font-size: clamp(1.08rem, 2.2vw, 1.35rem);
  line-height: 1.5;
}

.lede.small {
  margin-top: 18px;
  font-size: 1rem;
}

.survey-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink);
  color: var(--muted);
  font-size: .82rem;
}

.survey-meta p { margin: 0; }

.text-button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
}

.text-button:hover,
.text-button:focus-visible {
  color: var(--ink);
  text-decoration-color: currentColor;
}

.term-bank-wrap {
  padding: 26px 0 30px;
  border-bottom: 1px solid var(--line);
}

.bank-heading-row,
.timeline-heading-row {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: flex-end;
}

.bank-heading-row {
  margin-bottom: 18px;
}

.bank-heading-row h2 {
  font-size: 1rem;
  letter-spacing: -.01em;
}

.bank-heading-row p,
.placement-hint {
  margin: 0;
  color: var(--muted);
  font-size: .78rem;
}

.term-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 46px;
}

.term-chip {
  position: relative;
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: grab;
  touch-action: none;
  user-select: none;
  transition:
    border-color 140ms ease,
    background 140ms ease,
    transform 140ms ease,
    opacity 140ms ease;
}

.term-chip:hover,
.term-chip:focus-visible,
.term-chip.is-selected {
  border-color: var(--ink);
  background: var(--paper-raised);
}

.term-chip.is-selected {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.term-chip.is-dragging {
  opacity: .35;
}

.term-chip:active { cursor: grabbing; }

.timeline-wrap {
  padding-top: 54px;
}

.timeline-heading-row {
  margin-bottom: 24px;
}

.placement-hint {
  max-width: 260px;
  text-align: right;
}

.timeline {
  position: relative;
  min-height: 430px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  outline: none;
  cursor: crosshair;
}

.timeline:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

.timeline-grid {
  position: absolute;
  inset: 0 0 62px 0;
  pointer-events: none;
  background:
    linear-gradient(to right, transparent 0, transparent calc(100% - 1px), rgba(0,0,0,.035) 100%);
}

.axis {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  height: 44px;
  pointer-events: none;
}

.axis-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 4px;
  height: 1px;
  background: var(--ink);
}

.tick {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: .68rem;
  white-space: nowrap;
}

.tick:first-of-type { transform: none; }
.tick:last-of-type { transform: translateX(-100%); }

.tick i {
  display: block;
  width: 1px;
  height: 9px;
  margin: 0 auto 6px;
  background: var(--ink);
}

.tick b {
  font-weight: 500;
}

.markers {
  position: absolute;
  inset: 0 0 62px 0;
  pointer-events: none;
}

.marker {
  --x: 50%;
  --lane: 0;
  position: absolute;
  left: var(--x);
  top: 0;
  bottom: 0;
  width: 1px;
  pointer-events: auto;
  z-index: 2;
}

.marker-line {
  position: absolute;
  top: calc(92px + var(--lane) * 35px);
  bottom: 0;
  left: 0;
  width: 1px;
  background: var(--ink);
  opacity: .72;
  pointer-events: none;
}

.marker-line::after {
  content: "";
  position: absolute;
  left: -3px;
  bottom: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink);
}

.marker-handle {
  position: absolute;
  top: calc(16px + var(--lane) * 35px);
  left: 0;
  min-width: max-content;
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--paper-raised);
  transform: translateX(-50%);
  cursor: grab;
  touch-action: none;
  user-select: none;
  z-index: 3;
  box-shadow: 0 1px 0 rgba(0,0,0,.04);
}

.marker-handle:hover,
.marker-handle:focus-visible,
.marker.is-active .marker-handle {
  border-color: var(--accent);
  outline: none;
}

.marker.is-active .marker-line,
.marker.is-dragging .marker-line {
  width: 2px;
  background: var(--accent);
  opacity: 1;
}

.marker-time {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: .66rem;
  font-variant-numeric: tabular-nums;
}

.marker-hit {
  position: absolute;
  top: calc(88px + var(--lane) * 35px);
  bottom: 0;
  left: -14px;
  width: 29px;
  background: transparent;
  cursor: ew-resize;
  touch-action: none;
}

.drop-ghost {
  position: absolute;
  top: 0;
  bottom: 62px;
  width: 1px;
  background: var(--accent);
  pointer-events: none;
  z-index: 5;
}

.drop-ghost::after {
  content: attr(data-label);
  position: absolute;
  top: 14px;
  left: 0;
  transform: translateX(-50%);
  padding: 6px 9px;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  white-space: nowrap;
  font-size: .76rem;
}

.drag-float {
  position: fixed;
  z-index: 9999;
  transform: translate(-50%, -50%);
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: .8rem;
  pointer-events: none;
  box-shadow: 0 8px 30px rgba(0,0,0,.16);
}

.submit-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 44px;
}

.primary-button {
  min-width: 190px;
  padding: 14px 20px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper-raised);
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease;
}

.primary-button:hover:not(:disabled),
.primary-button:focus-visible:not(:disabled) {
  transform: translateY(-1px);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: .28;
}

.form-message {
  margin: 0;
  color: var(--muted);
  font-size: .86rem;
}

/* Results */
.results {
  margin-top: 120px;
  padding-top: 76px;
  border-top: 1px solid var(--ink);
}

.results-heading {
  max-width: 700px;
  margin-bottom: 40px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin: 0 0 14px;
  color: var(--muted);
  font-size: .75rem;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend i {
  display: inline-block;
  position: relative;
  width: 24px;
  height: 10px;
}

.legend-whisker::before,
.legend-iqr::before,
.legend-median::before,
.legend-mean::before {
  content: "";
  position: absolute;
}

.legend-whisker::before {
  left: 0; right: 0; top: 5px;
  height: 1px;
  background: var(--line-strong);
}

.legend-iqr::before {
  left: 2px; right: 2px; top: 3px;
  height: 5px;
  border-radius: 99px;
  background: var(--ink);
}

.legend-median::before {
  width: 8px; height: 8px;
  left: 8px; top: 1px;
  border-radius: 50%;
  background: var(--accent);
}

.legend-mean::before {
  width: 2px; height: 10px;
  left: 11px; top: 0;
  background: var(--accent);
}

.results-list {
  border-top: 1px solid var(--line);
}

.result-row {
  display: grid;
  grid-template-columns: minmax(170px, .82fr) minmax(280px, 2fr) minmax(165px, .78fr);
  gap: 26px;
  align-items: center;
  min-height: 96px;
  border-bottom: 1px solid var(--line);
}

.result-label {
  font-weight: 600;
  letter-spacing: -.02em;
}

.result-track {
  position: relative;
  height: 32px;
}

.result-baseline,
.result-whisker,
.result-iqr {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.result-baseline {
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--line);
}

.result-whisker {
  left: var(--p05);
  width: calc(var(--p95) - var(--p05));
  height: 1px;
  background: var(--line-strong);
}

.result-whisker::before,
.result-whisker::after {
  content: "";
  position: absolute;
  top: -4px;
  width: 1px;
  height: 9px;
  background: var(--line-strong);
}

.result-whisker::before { left: 0; }
.result-whisker::after { right: 0; }

.result-iqr {
  left: var(--p25);
  width: calc(var(--p75) - var(--p25));
  min-width: 3px;
  height: 8px;
  border-radius: 999px;
  background: var(--ink);
}

.result-median,
.result-mean {
  position: absolute;
  top: 50%;
  z-index: 2;
}

.result-median {
  left: var(--median);
  width: 11px;
  height: 11px;
  transform: translate(-50%, -50%);
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.result-mean {
  left: var(--mean);
  width: 2px;
  height: 18px;
  transform: translate(-1px, -50%);
  background: var(--accent);
}

.result-stats {
  color: var(--muted);
  font-size: .76rem;
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
}

.result-stats strong {
  color: var(--ink);
  font-weight: 600;
}

.result-empty {
  grid-column: 2 / -1;
  color: var(--muted);
  font-size: .82rem;
}

.scale-key {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
  padding-top: 13px;
  color: var(--muted);
  font-size: .68rem;
}

.scale-key span { text-align: center; }
.scale-key span:first-child { text-align: left; }
.scale-key span:last-child { text-align: right; }

footer {
  margin-top: 100px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .75rem;
}

.phrase-dialog {
  width: min(calc(100% - 36px), 500px);
  padding: 34px;
  border: 0;
  border-radius: 16px;
  background: var(--paper-raised);
  color: var(--ink);
  box-shadow: 0 24px 80px rgba(0,0,0,.18);
}

.phrase-dialog::backdrop {
  background: rgba(20,19,17,.42);
  backdrop-filter: blur(3px);
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 15px;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.dialog-phrase {
  margin: 16px 0;
  font-size: clamp(1.7rem, 5vw, 2.5rem);
  font-weight: 570;
  letter-spacing: -.035em;
  line-height: 1.12;
}

.dialog-question {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 720px) {
  .page-shell {
    width: min(calc(100% - 26px), var(--max-width));
    padding-top: 48px;
  }

  .intro { margin-bottom: 45px; }

  .bank-heading-row,
  .timeline-heading-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .placement-hint {
    max-width: none;
    text-align: left;
  }

  .timeline {
    min-height: 520px;
  }

  .marker-handle {
    max-width: 145px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .submit-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .result-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 20px 0;
  }

  .result-empty { grid-column: auto; }

  .result-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 16px;
  }

  .scale-key span:nth-child(2),
  .scale-key span:nth-child(4),
  .scale-key span:nth-child(6) {
    display: none;
  }

  .scale-key { grid-template-columns: repeat(4, 1fr); }
}


.marker.is-dragging .marker-handle,
.marker.is-dragging .marker-hit {
  cursor: grabbing;
}