/* The Toponym Normalizer page. Paper and ink in the light theme, a night
   atlas in the dark one; one color per answer source. */

:root {
  color-scheme: light dark;
  --bg: #f5f1e8;
  --bg-raised: #fffdf9;
  --bg-sunken: #ede7da;
  --ink: #1c232c;
  --ink-2: #4a5361;
  --ink-3: #737c89;
  --line: #e3dbca;
  --line-strong: #d0c4aa;
  --accent: #1f5f8b;
  --accent-strong: #174b6e;
  --accent-soft: rgba(31, 95, 139, 0.11);
  --on-accent: #ffffff;
  --focus: #2b7bd0;
  --ok: #2c7a4d;
  --warn: #a35f00;
  --err: #b42318;
  --src-preserved: #7444b3;
  --src-nli: #1f5f8b;
  --src-lcv: #a35f00;
  --src-lcd: #2c7a4d;
  --src-orig: #66707e;
  --contour-opacity: 0.5;
  --contour-filter: none;
  --shadow-sm: 0 1px 2px rgba(70, 50, 20, 0.05);
  --shadow: 0 1px 2px rgba(70, 50, 20, 0.05), 0 10px 30px -12px rgba(70, 50, 20, 0.18);
  --shadow-lg: 0 2px 4px rgba(70, 50, 20, 0.05), 0 18px 44px -18px rgba(70, 50, 20, 0.28);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "Cascadia Code", Consolas, "SF Mono", Menlo, monospace;
  --src: var(--accent);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e141b;
    --bg-raised: #151d27;
    --bg-sunken: #0b1016;
    --ink: #ece7db;
    --ink-2: #bab5a9;
    --ink-3: #8a909a;
    --line: #243040;
    --line-strong: #33435a;
    --accent: #7db7e7;
    --accent-strong: #a6cff2;
    --accent-soft: rgba(125, 183, 231, 0.13);
    --on-accent: #0e141b;
    --focus: #8fc6f6;
    --ok: #6cc391;
    --warn: #e5aa52;
    --err: #f3877e;
    --src-preserved: #b998f3;
    --src-nli: #7db7e7;
    --src-lcv: #e5aa52;
    --src-lcd: #6cc391;
    --src-orig: #9aa3ae;
    --contour-opacity: 0.2;
    --contour-filter: invert(1) hue-rotate(180deg);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px -14px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.3), 0 20px 48px -18px rgba(0, 0, 0, 0.7);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e141b;
  --bg-raised: #151d27;
  --bg-sunken: #0b1016;
  --ink: #ece7db;
  --ink-2: #bab5a9;
  --ink-3: #8a909a;
  --line: #243040;
  --line-strong: #33435a;
  --accent: #7db7e7;
  --accent-strong: #a6cff2;
  --accent-soft: rgba(125, 183, 231, 0.13);
  --on-accent: #0e141b;
  --focus: #8fc6f6;
  --ok: #6cc391;
  --warn: #e5aa52;
  --err: #f3877e;
  --src-preserved: #b998f3;
  --src-nli: #7db7e7;
  --src-lcv: #e5aa52;
  --src-lcd: #6cc391;
  --src-orig: #9aa3ae;
  --contour-opacity: 0.2;
  --contour-filter: invert(1) hue-rotate(180deg);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px -14px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.3), 0 20px 48px -18px rgba(0, 0, 0, 0.7);
}

:root[data-theme="light"] { color-scheme: light; }

.src-preserved { --src: var(--src-preserved); }
.src-nli { --src: var(--src-nli); }
.src-lcv { --src: var(--src-lcv); }
.src-lcd { --src: var(--src-lcd); }
.src-orig { --src: var(--src-orig); }

/* ------------------------------------------------------------------ base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
h2, p { margin: 0; }
a { color: var(--accent); }
button, input { font: inherit; color: inherit; }
::selection { background: color-mix(in srgb, var(--accent) 24%, transparent); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.serif { font-family: var(--serif); }
.mono-sm { font-family: var(--mono); font-size: 12.5px; overflow-wrap: anywhere; }
.val { font-family: var(--serif); font-weight: 600; color: var(--ink); }

.icon {
  width: 1em; height: 1em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon .icon-fill { fill: currentColor; stroke: none; }

.content { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ------------------------------------------------------------------ buttons */
.primary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 40px; padding: 0 18px;
  border: 0; border-radius: 11px;
  background: var(--accent); color: var(--on-accent);
  font-weight: 650; letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}
.primary:hover { background: var(--accent-strong); }
.primary:active { transform: translateY(1px); }
.primary.is-busy { position: relative; color: transparent; }
.primary.is-busy::after {
  content: ""; position: absolute; inset: 0; margin: auto;
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid var(--on-accent); border-right-color: transparent;
  animation: spin 0.8s linear infinite;
}

.ghost {
  height: 34px; padding: 0 14px;
  border: 1px solid var(--line-strong); border-radius: 10px;
  background: var(--bg-raised); color: var(--ink);
  font-weight: 600; cursor: pointer;
}
.ghost:hover { border-color: var(--accent); color: var(--accent); }

.icon-btn {
  display: grid; place-items: center;
  width: 36px; height: 36px;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg-raised); color: var(--ink-2);
  cursor: pointer;
}
.icon-btn:hover { color: var(--ink); border-color: var(--line-strong); }
.icon-btn .icon, .icon-btn svg { width: 18px; height: 18px; }

.copy-btn {
  display: inline-grid; place-items: center; flex: none;
  width: 32px; height: 32px;
  border: 1px solid transparent; border-radius: 9px;
  background: transparent; color: var(--ink-3);
  cursor: pointer;
}
.copy-btn:hover { background: var(--bg-sunken); color: var(--ink); border-color: var(--line); }
.copy-btn .icon { width: 16px; height: 16px; }
.copy-btn.copied { color: var(--ok); }
.copy-btn.copy-failed { color: var(--err); }

/* ------------------------------------------------------------------ top bar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1160px; margin: 0 auto; padding: 0 24px;
  height: 60px;
  display: flex; align-items: center; gap: 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none;
  font-size: 16px; font-weight: 700; letter-spacing: -0.01em; white-space: nowrap;
}
.brand-mark { width: 28px; height: 28px; color: var(--accent); }
.brand-pin { fill: var(--bg-raised); }
.brand-name span { color: var(--ink-3); font-weight: 500; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.health {
  display: inline-flex; align-items: center; gap: 7px;
  height: 30px; padding: 0 11px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--bg-raised);
  font-size: 13px; color: var(--ink-2); white-space: nowrap;
}
.health .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ink-3); }
.health[data-state="up"] .dot { background: var(--ok); animation: pulse 2.6s ease-in-out infinite; }
.health[data-state="down"] { color: var(--err); }
.health[data-state="down"] .dot { background: var(--err); }

/* ------------------------------------------------------------------ search */
.hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 340px at 82% -12%, var(--accent-soft), transparent 70%),
    var(--bg);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: url("contours.svg") 60% 30% / cover no-repeat;
  opacity: var(--contour-opacity);
  filter: var(--contour-filter);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.75) 55%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.75) 55%, transparent 100%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 1160px; margin: 0 auto; padding: 56px 24px 40px; }
.hero-inner > * { max-width: 860px; }

.lookup-field {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 7px 7px 22px;
  background: var(--bg-raised);
  border: 1px solid var(--line-strong); border-radius: 18px;
  box-shadow: var(--shadow-lg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.lookup-field:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow-lg); }
.lookup-field input {
  flex: 1; min-width: 0;
  border: 0; outline: 0; background: transparent;
  padding: 11px 0;
  font: 500 22px/1.3 var(--serif); color: var(--ink);
}
.lookup-field input::placeholder { color: var(--ink-3); opacity: 0.7; }
.lookup-field .primary { height: 50px; padding: 0 26px; border-radius: 13px; font-size: 16px; }

.lookup-options { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; margin-top: 16px; }

.segmented {
  position: relative; display: inline-flex;
  padding: 3px; border-radius: 12px;
  background: var(--bg-sunken); border: 1px solid var(--line);
}
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label {
  min-width: 64px; padding: 6px 16px; border-radius: 9px; text-align: center;
  font-weight: 650; font-size: 14px; color: var(--ink-2);
  cursor: pointer; user-select: none;
  transition: color 0.15s, background 0.15s;
}
.segmented label:hover { color: var(--ink); }
.segmented input:checked + label { background: var(--bg-raised); color: var(--ink); box-shadow: var(--shadow-sm), 0 0 0 1px var(--line); }
.segmented input:focus-visible + label { outline: 2px solid var(--focus); outline-offset: 1px; }

.form-error { margin-top: 10px; font-size: 14px; color: var(--err); font-weight: 550; }

/* ------------------------------------------------------------------ layout */
.resolve-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; padding-top: 28px; padding-bottom: 56px; align-items: start; }
.resolve-layout.has-recent { grid-template-columns: minmax(0, 1fr) 260px; }
.result-area { min-width: 0; }

/* ------------------------------------------------------------------ result */
.result, .notice-card {
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--line); border-radius: 18px;
  box-shadow: var(--shadow);
  animation: card-in 0.3s ease both;
}
.result { overflow: hidden; }
.result::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--src); }

.result-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; padding: 20px 26px 0 30px; }
.result-meta { font: 12.5px var(--mono); color: var(--ink-3); }

.badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 11px 4px 9px; border-radius: 999px;
  font-weight: 650; font-size: 13px; color: var(--src);
  background: color-mix(in srgb, var(--src) 11%, transparent);
  border: 1px solid color-mix(in srgb, var(--src) 28%, transparent);
  white-space: nowrap;
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--src); }

.transform { padding: 14px 26px 0 30px; }
.from { font: 400 19px/1.35 var(--serif); color: var(--ink-3); overflow-wrap: anywhere; }
.arrow { display: flex; align-items: center; height: 26px; color: var(--src); }
.arrow .icon { width: 20px; height: 20px; }
.to-row { display: flex; align-items: flex-start; gap: 10px; }
.to { flex: 1; min-width: 0; font: 600 clamp(26px, 3.4vw, 38px)/1.15 var(--serif); letter-spacing: -0.01em; overflow-wrap: anywhere; }
.to-row .copy-btn { margin-top: 4px; }

.facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr));
  margin: 18px 0 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
/* each cell draws its own right and bottom rule, so a short last row leaves no colored gap */
.fact { min-width: 0; padding: 11px 14px 11px 30px; box-shadow: 1px 0 0 var(--line), 0 1px 0 var(--line); }
.fact dt { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: 0.07em; color: var(--ink-3); }
.fact dd { margin: 3px 0 0; overflow-wrap: anywhere; }
.ext { display: inline-flex; align-items: center; gap: 5px; max-width: 100%; font-family: var(--mono); font-size: 12.5px; text-decoration: none; }
.ext span { overflow-wrap: anywhere; }
.ext:hover span { text-decoration: underline; }
.ext .icon { width: 13px; height: 13px; opacity: 0.75; }

/* ------------------------------------------------------------------ steps */
.steps { list-style: none; margin: 0; padding: 22px 26px 8px 30px; }
.step {
  position: relative;
  display: grid; grid-template-columns: 28px minmax(0, 1fr); column-gap: 14px;
  padding-bottom: 16px;
  animation: step-in 0.35s ease both;
  animation-delay: calc(var(--i, 0) * 70ms);
}
.step::before {
  content: ""; position: absolute; left: 13px; top: 30px; bottom: 2px; width: 2px;
  background: repeating-linear-gradient(to bottom, var(--line-strong) 0 4px, transparent 4px 8px);
}
.step:last-child::before { display: none; }
.step.lit::before { background: color-mix(in srgb, var(--src) 45%, var(--line)); }
.marker {
  position: relative; z-index: 1;
  display: grid; place-items: center;
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid var(--line-strong);
  background: var(--bg-raised); color: var(--ink-3);
  font: 700 12px var(--mono);
}
.marker .icon { width: 14px; height: 14px; stroke-width: 2.6; }
.step[data-state="answer"] .marker {
  background: var(--src); border-color: var(--src); color: var(--bg-raised);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--src) 17%, transparent);
}
.step[data-state="done"] .marker { border-color: color-mix(in srgb, var(--src) 55%, var(--line-strong)); color: var(--src); }
.step[data-state="pass"] .marker { border-color: var(--ink-3); color: var(--ink-2); }
.step[data-state="skip"] .marker { border-style: dashed; }
.step[data-state="warn"] .marker { border-color: var(--warn); color: var(--warn); background: color-mix(in srgb, var(--warn) 10%, var(--bg-raised)); }
.step[data-state="idle"] .marker, .step[data-state="idle"] .step-body { opacity: 0.5; }

.step-title { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; min-height: 28px; font-weight: 650; }
.state-tag {
  padding: 2px 7px; border-radius: 6px;
  background: var(--bg-sunken); color: var(--ink-3);
  font: 600 10.5px var(--mono); text-transform: uppercase; letter-spacing: 0.06em;
}
.step[data-state="answer"] .state-tag { background: color-mix(in srgb, var(--src) 13%, transparent); color: var(--src); }
.step[data-state="warn"] .state-tag { background: color-mix(in srgb, var(--warn) 13%, transparent); color: var(--warn); }
.step-summary { margin-top: 1px; color: var(--ink-2); }

/* ------------------------------------------------------------------ loading and notices */
.loading { padding: 22px 26px 24px 30px; }
.loading::before { background: var(--accent); }
.loading-head { display: flex; align-items: center; gap: 14px; }
.loading-title { flex: 1; min-width: 0; font: 600 19px/1.3 var(--serif); overflow-wrap: anywhere; }
.elapsed { font: 600 14px var(--mono); color: var(--ink-2); }
.spinner {
  width: 24px; height: 24px; flex: none; border-radius: 50%;
  border: 3px solid var(--accent-soft); border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
.skeleton { display: grid; gap: 10px; margin-top: 20px; }
.sk {
  display: block; height: 14px; border-radius: 7px;
  background: linear-gradient(90deg, var(--bg-sunken) 25%, color-mix(in srgb, var(--line) 80%, var(--bg-raised)) 37%, var(--bg-sunken) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
}
.sk-1 { width: 40%; height: 30px; border-radius: 9px; }
.sk-2 { width: 70%; }
.sk-3 { width: 55%; }

.notice-card { display: flex; align-items: center; gap: 14px; padding: 18px 24px; color: var(--ink-2); }
.notice-icon {
  display: grid; place-items: center; flex: none;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--bg-sunken); color: var(--ink-2);
}
.notice-icon .icon { width: 17px; height: 17px; }
.notice-card.is-error { border-color: color-mix(in srgb, var(--err) 35%, var(--line)); color: var(--ink); }
.notice-card.is-error .notice-icon { background: color-mix(in srgb, var(--err) 12%, transparent); color: var(--err); }

/* ------------------------------------------------------------------ recent */
.recent {
  position: sticky; top: 80px;
  padding: 14px 10px 10px;
  background: var(--bg-raised);
  border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow-sm);
}
.recent h2 { padding: 0 8px 8px; font: 600 11.5px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); }
.recent ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.recent button {
  width: 100%; display: grid; grid-template-columns: 10px minmax(0, 1fr); gap: 10px;
  padding: 8px; border: 0; border-radius: 10px;
  background: transparent; text-align: left; cursor: pointer;
}
.recent button:hover, .recent button[aria-current="true"] { background: var(--bg-sunken); }
.recent .dot { width: 8px; height: 8px; margin-top: 7px; border-radius: 50%; background: var(--src); }
.r-text { display: grid; min-width: 0; }
.r-heading { font: 600 15px/1.3 var(--serif); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.r-sub { font-size: 12px; color: var(--ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.r-orig { font-weight: 400; }

/* ------------------------------------------------------------------ motion */
@keyframes card-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes step-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes shimmer { from { background-position: 100% 0; } to { background-position: 0 0; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 45%, transparent); }
  60% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--ok) 0%, transparent); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ------------------------------------------------------------------ narrow screens */
@media (max-width: 1000px) {
  .resolve-layout.has-recent { grid-template-columns: minmax(0, 1fr); }
  .recent { position: static; }
}
@media (max-width: 720px) {
  .topbar-inner { padding: 0 16px; }
  .content { padding: 0 16px; }
  .hero-inner { padding: 32px 16px 26px; }
  .lookup-field { flex-wrap: wrap; padding: 6px 6px 6px 16px; border-radius: 16px; }
  .lookup-field input { font-size: 19px; flex-basis: 100%; padding: 10px 10px 8px 0; }
  .lookup-field .primary { flex: 1; height: 46px; }
  .result-head, .transform { padding-left: 20px; padding-right: 16px; }
  .steps { padding: 20px 16px 6px 20px; }
  .fact { padding-left: 20px; }
  .notice-card { padding: 16px 18px; }
}
@media (max-width: 380px) {
  .health .health-text { display: none; }
  .health { padding: 0 9px; }
}