:root {
  --bg: #e7e2d8;
  --paper: #f7f5f1;
  --ink: #1c1915;
  --muted: #6f675c;
  --line: #ddd6cb;
  --line-strong: #cfc6ba;
  --accent: #1d4f45;
  --accent-ink: #f3f7f6;
  --accent-soft: #e4eeeb;
  --danger: #8d3b32;
  --danger-soft: #f8ecea;
  --warn: #8a5a12;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --mono: "SF Mono", "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 28px 64px;
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 22px;
}
.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1 { margin: 0; font-size: 32px; font-weight: 600; letter-spacing: -0.03em; }
h2 { margin: 0; font-size: 15px; font-weight: 600; }
.lede { margin: 6px 0 0; color: var(--muted); max-width: 40em; }
.local {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}
#account-email {
  color: var(--ink);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.text-btn {
  border: 0;
  background: transparent;
  color: var(--accent);
  padding: 0;
  font-size: 13px;
}
.text-btn:hover { text-decoration: underline; }

.auth:not([hidden]) {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}
.auth-card {
  width: min(440px, 100%);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 28px 26px 22px;
}
.auth-card h1 { font-size: 32px; margin: 0 0 8px; }
.auth-card .lede { margin: 0 0 18px; }
.auth-field {
  display: grid;
  gap: 4px;
  margin: 0 0 12px;
  font-size: 13.5px;
}
.auth-field small {
  display: block;
  color: var(--muted);
  font-size: 11.5px;
}
.auth-field input {
  width: 100%;
  border: 1px solid var(--line-strong);
  background: #fffdf9;
  padding: 10px 12px;
}
.btn.auth-submit {
  width: 100%;
  margin-top: 8px;
  display: grid;
  justify-items: center;
  gap: 2px;
  padding: 10px 14px;
}
.btn.auth-submit span {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.85;
}
.auth-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}
#auth-message {
  min-height: 1.2em;
  margin: 4px 0 0;
  font-size: 13.5px;
}
#auth-message.ok { color: var(--accent); }
#auth-message.bad { color: var(--danger); }
#auth-setup {
  margin: 0 0 14px;
  color: var(--danger);
  font-size: 13.5px;
}

.drop {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 22px 22px;
  background: var(--paper);
  border: 1px dashed var(--line-strong);
}
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop.compact { padding: 12px 16px; }
.drop-title { margin: 0; font-size: 16px; font-weight: 600; }
.drop-sub { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.drop-actions { display: flex; gap: 8px; flex: 0 0 auto; }
.file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--accent-ink);
  border: 1px solid var(--accent);
  padding: 7px 14px;
  text-decoration: none;
}
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn:hover { filter: brightness(1.05); }

.status { min-height: 1.4em; margin: 10px 0 0; color: var(--muted); font-size: 13px; }
.status:empty { display: none; }

.err {
  margin-top: 10px;
  padding: 10px 12px;
  background: var(--danger-soft);
  border: 1px solid #e4c8c4;
  color: var(--danger);
  font-size: 13px;
}
.err strong { color: var(--ink); }
.err ul { margin: 6px 0 0; padding-left: 1.2em; }

details { margin-top: 14px; }
summary { cursor: pointer; color: var(--muted); font-size: 13px; }
summary:hover { color: var(--ink); }
#format pre {
  margin: 10px 0;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
  overflow-x: auto;
}
#format ul, .defs dd { color: var(--muted); }
#format li { margin: 4px 0; }

.gallery-bar { margin: 22px 0 8px; }
.gallery-bar h2 { margin-bottom: 10px; }
.gallery {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
}
.thumb {
  position: relative;
  width: 132px;
  flex: 0 0 auto;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 0;
  text-align: left;
}
.thumb.selected { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.thumb-open { display: block; width: 100%; border: 0; background: transparent; padding: 0; text-align: left; }
.thumb canvas { display: block; width: 130px; height: 130px; background: #ece7df; }
.thumb-meta { display: block; padding: 6px 8px 8px; }
.thumb-name {
  display: block;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.thumb-range { display: block; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.thumb-x {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border: 0;
  background: rgba(247, 245, 241, 0.92);
  color: var(--ink);
  line-height: 1;
}

.work {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 22px;
  margin-top: 18px;
  align-items: start;
}

.viewer-head { margin-bottom: 10px; }
.viewer-title, .summary-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
.summary-head { align-items: center; margin-bottom: 10px; }
.meta, .caption, .detect, .hint, .legend, .mode-lead {
  color: var(--muted);
  font-size: 13px;
}
.meta { margin: 4px 0 0; font-variant-numeric: tabular-nums; }
.caption {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 8px 0 0;
  font-variant-numeric: tabular-nums;
}
#readout { margin-left: auto; }

.map-stage {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 10px;
}
#map { display: block; background: #ece7df; image-rendering: pixelated; }
#cbar { display: block; flex: 0 0 auto; }

.seg {
  display: inline-flex;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  flex-wrap: nowrap;
}
.seg button {
  background: transparent;
  border: 0;
  padding: 6px 11px;
  color: var(--muted);
}
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"],
.seg button[aria-selected="true"] {
  background: var(--accent);
  color: var(--accent-ink);
}
.mode { margin-bottom: 12px; }
.mode button { padding: 8px 14px; }

.analysis {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px;
}
.mode-lead { margin: 0 0 12px; }
.controls { display: grid; gap: 10px; margin-bottom: 14px; }
.control { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.k { color: var(--muted); font-size: 13px; min-width: 2em; }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.periods { display: flex; gap: 14px; flex-wrap: wrap; }
.periods label, .cutoff-num { display: flex; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; }
input[type="number"] {
  width: 7.2em;
  background: #fff;
  border: 1px solid var(--line-strong);
  padding: 5px 7px;
}
input[type="number"]:disabled { color: var(--muted); background: #f3f0ea; }
input[type="range"] { flex: 1; min-width: 120px; accent-color: var(--accent); }
.cutoff { width: 100%; }
.detect { margin: 0; font-variant-numeric: tabular-nums; }
.hint { margin: 0; }

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.metric {
  background: #fff;
  border: 1px solid var(--line);
  padding: 10px 12px 9px;
  min-width: 0;
}
.metric .k { min-width: 0; }
.metric .v {
  margin: 2px 0 0;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.metric .u { font-size: 13px; font-weight: 500; color: var(--muted); margin-left: 3px; }
.metric .sub { margin: 4px 0 0; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.metric-note {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.warnings { display: grid; gap: 6px; margin-top: 10px; }
.warnings:empty { display: none; }
.warn {
  margin: 0;
  padding: 8px 10px;
  background: #f8f1e4;
  color: var(--warn);
  font-size: 13px;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}
.plot-card {
  margin: 12px 0 0;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 10px 12px 8px;
}
.chart-grid .plot-card { margin: 0; }
.plot-card figcaption { font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.plot canvas, .spec-stage canvas { display: block; width: 100%; }
.plot { height: 168px; }
.plot.tall { height: 240px; }
.plot canvas { height: 100%; }
.legend { display: flex; gap: 14px; align-items: center; margin: 6px 0 0; flex-wrap: wrap; }
.swatch { display: inline-block; width: 14px; height: 3px; margin-right: 5px; vertical-align: middle; background: var(--accent); }
.swatch.mean { background: #1c1915; }
.swatch.trace { background: #a33b32; }
.swatch.band { height: 8px; background: rgba(29, 79, 69, 0.28); }
.swatch.cut { background: var(--warn); }

.spec-stage {
  background: #1c1915;
  border: 1px solid var(--line);
  height: 240px;
}
#chart-spec { height: 240px; }

.table-wrap { overflow-x: auto; margin-top: 12px; background: var(--paper); border: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }
th, td { padding: 8px 10px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--line); }
th:first-child, td:first-child { text-align: left; }
th { color: var(--muted); font-weight: 500; background: #f3f0ea; }
tbody tr { cursor: pointer; }
tbody tr:hover td { background: #fbfaf8; }
tbody tr.selected td { background: var(--accent-soft); }
.summary { margin-top: 22px; }
#summary-note { margin-top: 8px; }

.defs { margin-top: 18px; }
.defs dl { margin: 10px 0 0; }
.defs dt { font-weight: 600; margin-top: 10px; }
.defs dd { margin: 2px 0 0; }

@media (max-width: 980px) {
  .page { padding: 18px 14px 48px; }
  .top { flex-direction: column; align-items: flex-start; }
  .local { text-align: left; align-items: flex-start; }
  .work, .chart-grid, .metrics { grid-template-columns: 1fr; }
  .drop { flex-direction: column; align-items: flex-start; }
  #readout { margin-left: 0; }
}

@media print {
  body { background: white; }
  .drop, .local, .btn, details summary { }
  .page { max-width: none; }
}