/* Amsterdam: a white architectural model under a North Sea sky. One loud colour, the city's red. */
/* Schibsted Grotesk (OFL, vendor/fonts/OFL.txt), served with the map: Google Fonts' variable files, latin and latin-ext */
@font-face {
  font-family: "Schibsted Grotesk"; font-weight: 400 800; font-display: swap;
  src: url(vendor/fonts/schibsted-grotesk-latin.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Schibsted Grotesk"; font-weight: 400 800; font-display: swap;
  src: url(vendor/fonts/schibsted-grotesk-latin-ext.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
:root {
  --sky: #e4e8ea;
  --paper: #ffffff;
  --ink: #000000;
  --muted: #5d6266;
  --rule: #cfd5d8;
  --red: #ec0000;
  --gutter: clamp(16px, 2.4vw, 32px);
  font: 400 14px/1.5 "Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--sky); color: var(--ink); overflow: hidden; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }

#scene { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
/* Sky veils keep the masthead and the timeline legible over the model. */
.veil { position: fixed; left: 0; right: 0; pointer-events: none; }
.veil-top { top: 0; height: 150px; background: linear-gradient(var(--sky) 35%, rgba(228, 232, 234, 0)); }
.veil-bottom { bottom: 0; height: 100px; background: linear-gradient(rgba(228, 232, 234, 0), var(--sky) 55%); }
body.photo .veil-bottom { display: none; }  /* the aerial view runs to the edge, under its years */

/* Masthead: the three crosses, then the name set large and tight. */
.masthead { position: fixed; top: calc(env(safe-area-inset-top, 0px) + var(--gutter)); left: var(--gutter);
  display: flex; gap: 14px; align-items: flex-start; pointer-events: none; }
[hidden] { display: none !important; }
h1 { position: relative; }
.sibling { position: fixed; right: var(--gutter); top: calc(env(safe-area-inset-top, 0px) + var(--gutter) + 124px);
  color: var(--muted); font-size: 12px; text-decoration: underline; text-decoration-color: var(--red); text-underline-offset: 3px; }
h1 { margin: 0; font-size: clamp(34px, 4.4vw, 56px); font-weight: 800; letter-spacing: -0.035em; line-height: .9; }
.dek { margin: 8px 0 0; color: var(--muted); max-width: 26ch; font-size: 14px; line-height: 1.4; }

/* Mode switch: a single bar, the active mode filled black. */
.modes { position: fixed; top: calc(env(safe-area-inset-top, 0px) + var(--gutter)); left: 50%; transform: translateX(-50%);
  display: flex; background: var(--paper); border-radius: 999px; padding: 3px; box-shadow: 0 1px 0 var(--rule); z-index: 6; }
.modes button, .pick summary { border: 0; background: none; padding: 7px 16px; border-radius: 999px; cursor: pointer; font-weight: 500;
  white-space: nowrap; }  /* "Context layers" on one line, as "Kontekstitasot" is */
.modes button[aria-pressed="true"], .pick.on summary { background: var(--ink); color: var(--paper); }
@media (max-width: 1180px) { .modes button, .pick summary { padding: 7px 11px; } }
@media (max-width: 900px) { .modes button, .pick summary { padding: 7px 8px; } }
/* War and Map: a menu each, opening under the bar. The map's sits last, after a rule, where Quests were. */
.pick { position: relative; }
.pick summary { list-style: none; white-space: nowrap; }
.pick summary::-webkit-details-marker { display: none; }
.pick summary::after { content: ""; display: inline-block; width: 5px; height: 5px; margin: 0 0 3px 8px; border: solid currentColor;
  border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); }
.pick[open] summary::after { transform: rotate(225deg); margin-bottom: 0; }
.map-pick { margin-left: 2px; border-left: 1px solid var(--rule); }
.map-pick summary { border-radius: 0 999px 999px 0; }
.map-pick summary b { font-weight: 700; }
.pick .menu { position: absolute; top: calc(100% + 8px); left: 0; min-width: 230px; background: var(--paper); border-radius: 10px;
  padding: 6px; box-shadow: 0 10px 30px rgba(30, 40, 50, .18); }
.map-pick .menu { left: auto; right: 0; min-width: 190px; }
.pick .menu-head { margin: 6px 8px 3px; font-size: 12px; font-weight: 700; color: var(--muted); white-space: nowrap; }
.modes .pick .menu button { display: block; width: 100%; text-align: left; padding: 6px 10px; border-radius: 6px; white-space: nowrap; }
.modes .pick .menu button:hover { background: var(--sky); }
.modes .pick .menu button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

.tally { position: fixed; top: calc(env(safe-area-inset-top, 0px) + var(--gutter)); right: var(--gutter); text-align: right; }
.tally-year { display: block; font-size: clamp(40px, 5vw, 64px); font-weight: 800; letter-spacing: -0.04em; line-height: .85; }
.tally-count { color: var(--muted); }

/* Context panel: legend, ramp or layer list, always on the left under the masthead. */
.panel { position: fixed; left: var(--gutter); top: calc(env(safe-area-inset-top, 0px) + var(--gutter) + 120px);
  width: min(340px, calc(100vw - 2 * var(--gutter))); max-height: calc(100vh - 300px); overflow-y: auto;
  background: var(--paper); border-radius: 10px; padding: 14px 16px; }
.panel h2 { margin: 0 0 8px; font-size: 13px; font-weight: 700; }
.panel h2.section { margin: 14px 0 4px; color: var(--muted); font-weight: 600; }
.panel h2.section:first-child { margin-top: 0; }
.panel h2.section { display: flex; align-items: center; gap: 7px; scroll-margin-top: 6px; }
.icon { width: 16px; height: 16px; flex: none; }
.layer-title .icon { width: 20px; height: 20px; margin-right: 8px; vertical-align: -3px; }
.jump { display: flex; gap: 4px; margin: 0 0 10px; position: sticky; top: -14px; background: var(--paper); padding: 6px 0; z-index: 1; }
.jump button { width: 34px; height: 34px; border: 1px solid var(--rule); border-radius: 8px; background: var(--paper);
  display: grid; place-items: center; cursor: pointer; color: var(--ink); }
.jump button:hover { background: var(--sky); }
.jump .icon { width: 18px; height: 18px; }
/* Language: two letters under the year. */
.lang { position: fixed; right: var(--gutter); top: calc(env(safe-area-inset-top, 0px) + var(--gutter) + 92px); display: flex;
  background: var(--paper); border-radius: 999px; padding: 2px; }
.lang button { border: 0; background: none; padding: 3px 9px; border-radius: 999px; cursor: pointer; font-size: 12px; font-weight: 600; color: var(--muted); }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.swatches { display: flex; flex-direction: column; }
.swatch { display: grid; grid-template-columns: 12px 1fr auto; gap: 10px; align-items: center; background: none; border: 0;
  text-align: left; padding: 4px 0; cursor: pointer; }
.swatch i { width: 12px; height: 12px; border-radius: 2px; }
.swatch .n { color: var(--muted); font-size: 12px; }
/* The legend folds to its handle: on a phone by default, elsewhere when asked. */
.sheet-handle { display: block; width: calc(100% + 32px); margin: -14px -16px 8px; padding: 10px 16px; border: 0;
  background: none; text-align: left; font-weight: 600; cursor: pointer; border-bottom: 1px solid var(--rule); }
.sheet-handle::after { content: ""; float: right; width: 8px; height: 8px; margin: 4px 0 0 12px; border: solid var(--muted);
  border-width: 0 2px 2px 0; transform: rotate(225deg); }
.panel.collapsed { width: auto; overflow: hidden; padding-bottom: 0; }
.panel.collapsed .sheet-handle { margin-bottom: 0; border-bottom: 0; }
.panel.collapsed .sheet-handle::after { transform: rotate(45deg); margin-top: 0; }
.panel.collapsed #panel-body { display: none; }
.energy-scale div { display: grid; grid-template-columns: 28px 1fr auto; gap: 10px; align-items: center; padding: 2px 0; }
.energy-scale i { height: 14px; border-radius: 2px; }
.energy-scale .n { color: var(--muted); font-size: 12px; }
/* Energy label or solar potential, inside the Energy panel */
.sub { display: flex; background: var(--sky); border-radius: 999px; padding: 2px; margin: 0 0 10px; }
.sub button { flex: 1; border: 0; background: none; padding: 5px 10px; border-radius: 999px; cursor: pointer; font: inherit; font-size: 12px; font-weight: 600; }
.sub button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.src { font-size: 12px; color: var(--ink); text-decoration-color: var(--red); text-underline-offset: 3px; }
.layer-intro { margin: 6px 0 10px; line-height: 1.5; }
.filter { width: 100%; font: inherit; padding: 7px 10px; border: 1px solid var(--rule); border-radius: 6px; margin-bottom: 6px; background: var(--paper); }
.people .addr { color: var(--ink); opacity: .55; }
.n, .tally, .card dd, .card .y { font-variant-numeric: tabular-nums; }
.swatch[aria-pressed="false"] { opacity: .35; }
.ramp { height: 10px; border-radius: 2px; margin: 4px 0 6px; }
.ramp-scale { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; }
.note { color: var(--muted); font-size: 12px; margin: 10px 0 0; }

.layers { display: flex; flex-direction: column; gap: 2px; margin: 0 -8px; }
.layer { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; background: none; border: 0; text-align: left;
  padding: 8px; border-radius: 6px; cursor: pointer; }
.layer:hover { background: var(--sky); }
.layer[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.layer b { font-weight: 700; }
.layer .era, .layer .n { font-size: 12px; opacity: .7; }
.layer .n { grid-row: 1 / 3; grid-column: 2; align-self: center; }
.layer-detail { margin-top: 10px; }
.stories { list-style: none; margin: 0 -8px; padding: 0; }
.story { display: block; width: 100%; text-align: left; background: none; border: 0; border-radius: 6px; padding: 7px 8px; cursor: pointer; }
.story:hover { background: var(--sky); }
.story b { display: block; font-weight: 600; }
.story span { display: block; color: var(--muted); font-size: 12px; line-height: 1.45; margin-top: 2px; }
.back { border: 0; background: none; padding: 0; margin: 0 0 10px; color: var(--muted); cursor: pointer; font-size: 13px; }
.back::before { content: "‹ "; }
.layer-title { font-size: 22px !important; font-weight: 800 !important; letter-spacing: -0.02em; margin: 0 !important; line-height: 1.1; }
.layer-era { margin: 2px 0 0; color: var(--muted); }
.layer-detail p { margin: 0 0 10px; line-height: 1.55; }
.layer-detail a { color: var(--ink); text-decoration-color: var(--red); text-underline-offset: 3px; font-size: 12px; }
.caveat { color: var(--muted); font-size: 12px; }

/* Building card: a white slip of paper. Follows the pointer on hover; pinned by a click, then it takes clicks.
   Hierarchy: name and year are the heading; small sentence-case headings mark the sections below. */
.card { position: fixed; z-index: 10; pointer-events: none; background: var(--paper); border-radius: 10px;
  width: 330px; max-height: calc(100vh - 24px); overflow-y: auto; box-shadow: 0 8px 28px rgba(30, 40, 50, .16); font-size: 13px; }
.card.pinned { pointer-events: auto; width: 400px; }
.card-close { position: absolute; top: 8px; right: 8px; width: 30px; height: 30px; border: 0; border-radius: 50%;
  background: rgba(255,255,255,.92); cursor: pointer; font-size: 18px; line-height: 1; z-index: 1; }
.card .photo { margin: 0; }
.card .photo img { display: block; width: 100%; max-height: 210px; object-fit: cover; border-radius: 10px 10px 0 0; background: var(--sky); }
.card .photo figcaption { font-size: 11px; color: var(--muted); padding: 5px 16px 0; }
/* Photos through the years: today's first, then the archive; the year sits on the picture, tabs below jump. */
.card .photo .frame { position: relative; }
.card .photo.loading img { opacity: .35; transition: opacity .2s; }
.card .photo .year { position: absolute; left: 10px; bottom: 8px; background: var(--ink); color: var(--paper);
  font-size: 12px; font-weight: 700; padding: 2px 7px; border-radius: 4px; font-variant-numeric: tabular-nums; }
.card .photo .prev, .card .photo .next { position: absolute; top: 50%; transform: translateY(-50%); width: 30px; height: 30px;
  border: 0; border-radius: 50%; background: rgba(255,255,255,.92); cursor: pointer; font-size: 20px; line-height: 1; }
.card .photo .prev { left: 8px; } .card .photo .next { right: 8px; }
.card .photo .years { display: flex; flex-wrap: wrap; gap: 4px; padding: 6px 16px 0; }
.card .photo .years button { border: 1px solid #d6d9dc; background: none; border-radius: 4px; padding: 2px 7px; font: inherit;
  font-size: 12px; cursor: pointer; font-variant-numeric: tabular-nums; }
.card .photo .years button[aria-current] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.card .photo button:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.card .more-photos { font-size: 11px; margin: 3px 16px 0; color: var(--ink); }
.card a { color: inherit; text-decoration-color: var(--red); text-underline-offset: 3px; }
.card-head { padding: 12px 16px 10px; }
.card-head h3 { margin: 0 0 6px; font-size: 17px; font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; padding-right: 26px; }
.card .when { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.card .y { font-size: 30px; font-weight: 800; letter-spacing: -0.03em; line-height: 1; }
.card .period { color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
.card .period i, .card .chips i { width: 9px; height: 9px; border-radius: 2px; flex: none; }
.card section { padding: 10px 16px; border-top: 1px solid var(--rule); }
.card h4 { margin: 0 0 6px; font-size: 12px; font-weight: 700; color: var(--muted); }
.card .extract { margin: 0; line-height: 1.55; }
.card .fact { background: #fff6e8; border-top-color: #f0dcc0; }
.card .fact p { margin: 0; line-height: 1.5; }
.card .chips { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.card .chips li { display: flex; gap: 8px; align-items: flex-start; }
.card .chips li i { margin-top: 5px; }
.card .chips b { font-weight: 600; }
.card .chips span { color: var(--muted); }
.card .chips p { margin: 3px 0 0; line-height: 1.5; }
.card dl { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; margin: 0; }
.card dt { color: var(--muted); }
.card dd { margin: 0; text-align: right; }
.card .why { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
.card .sources p { margin: 0; }
.card .naming .why { white-space: pre-line; }
.card-head .sv { margin: 0; color: var(--muted); }
.card .former { list-style: none; margin: 0 0 6px; padding: 0; display: flex; flex-direction: column; gap: 3px; }
.card .former span { color: var(--muted); }
.card .naming summary { cursor: pointer; margin-top: 6px; font-size: 12px; }
.card .elabel { color: #fff; font-weight: 700; padding: 1px 7px; border-radius: 3px; }
.card .residents { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.card .residents span, .card .residents .desc { color: var(--muted); }
.card .residents blockquote { margin: 4px 0 0; padding-left: 10px; border-left: 2px solid var(--rule); font-size: 12px; line-height: 1.5; color: #3e4448; }
.card .photo.inline { margin: 0 -16px -10px; }
.card .photo.inline img { border-radius: 0; }
.card .hint { margin: 0; padding: 8px 16px 12px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--rule); }

/* How to move: a quiet line under the timeline's right end. */
.howto { position: fixed; right: var(--gutter); bottom: calc(env(safe-area-inset-bottom, 0px) + 88px); color: var(--muted); background: rgba(228,232,234,.85); padding: 2px 8px; border-radius: 4px;
  font-size: 12px; pointer-events: none; }
@media (max-width: 720px), (hover: none) { .howto { display: none; } }

.timeline { position: fixed; left: 0; right: 0; bottom: 0; display: flex; align-items: flex-end; gap: 14px;
  padding: 0 var(--gutter) calc(env(safe-area-inset-bottom, 0px) + 14px); pointer-events: none; }
.timeline > * { pointer-events: auto; }
.timeline canvas { flex: 1; height: 64px; cursor: ew-resize; touch-action: none; }
.play { width: 44px; height: 44px; border-radius: 50%; border: 0; background: var(--ink); color: var(--paper);
  cursor: pointer; margin-bottom: 20px; display: grid; place-items: center; flex: none; }
.play svg { width: 16px; height: 16px; fill: currentColor; }
/* The aerial view is a photo: no years, colours or legend to show. A quest needs its red building, so no photo then. */
body.photo .panel, body.photo .timeline, body.photo .tally, body.questing .streets-mode, body.questing .war-pick, body.questing .other-pick, body.questing .map-pick { display: none; }
/* Old maps on the ground, under the language switch; below the button, every map's year and the one lying there now. */
.ground { position: fixed; right: var(--gutter); top: calc(env(safe-area-inset-top, 0px) + var(--gutter) + 124px);
  display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.ground button { border: 0; background: var(--paper); border-radius: 999px; padding: 4px 11px; cursor: pointer;
  font-size: 12px; font-weight: 600; color: var(--muted); }
.ground button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.ground-box { width: min(272px, calc(100vw - 122px));  /* clear of the phone's Street names pill */ background: var(--paper); border-radius: 10px; padding: 10px 12px; font-size: 12px; }
.ground-box p { margin: 0 0 8px; color: var(--muted); line-height: 1.35; }
/* The box's title folds it to itself and back. */
.ground-box .box-fold { display: flex; align-items: center; justify-content: space-between; width: 100%; margin: 0 0 4px;
  padding: 0; border-radius: 0; background: none; color: var(--ink); font-size: 13px; font-weight: 700; text-align: left; }
.ground-box .box-fold::after { content: ""; width: 7px; height: 7px; margin: 3px 2px 0 12px; border: solid var(--muted);
  border-width: 0 2px 2px 0; transform: rotate(225deg); }
.ground-box.folded { width: auto; }
.ground-box.folded .box-fold { margin: 0; }
.ground-box.folded .box-fold::after { transform: rotate(45deg); margin-top: -3px; }
.ground-box .ground-name { margin: 8px 0 0; color: var(--ink); font-weight: 600; }
.ground-years { display: grid; grid-template-columns: repeat(5, 1fr); gap: 3px; }
.fine-alone { display: flex; align-items: center; gap: 6px; margin: 8px 0 0; font-weight: 600; cursor: pointer; }
.fine-alone input { margin: 0; accent-color: var(--ink); }
.noise-scale { display: flex; margin-top: 8px; font-size: 10px; color: var(--muted); text-align: center; }
.noise-scale span { flex: 1; }
.noise-scale i { display: block; height: 10px; margin-bottom: 2px; }
.ground-years button { padding: 3px 0; border: 0; border-radius: 4px; font: inherit; cursor: pointer; background: var(--sky); color: var(--ink); font-weight: 500;
  font-variant-numeric: tabular-nums; }
.ground-years button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.ground-box label { display: flex; align-items: center; gap: 6px; margin-top: 10px; font-weight: 600; cursor: pointer; }
.ground-box input { margin: 0; accent-color: var(--ink); }
body.photo .ground, body.questing .ground { display: none; }
/* The aerial view's years, where the timeline would be. */
.photo-years { display: none; position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(env(safe-area-inset-bottom, 0px) + 24px); background: var(--paper); border-radius: 999px; padding: 3px;
  box-shadow: 0 1px 0 var(--rule); }
.photo-years button { border: 0; background: none; padding: 7px 16px; border-radius: 999px; cursor: pointer; font-weight: 500; }
.photo-years button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
body.photo .photo-years { display: flex; }
/* Below about 1400 px the bar no longer fits between the name and the year: it moves under the name. */
@media (min-width: 721px) and (max-width: 1400px) {
  .dek { display: none; }
  .modes { left: var(--gutter); transform: none; top: calc(env(safe-area-inset-top, 0px) + var(--gutter) + 60px); }
  .lang { top: calc(env(safe-area-inset-top, 0px) + var(--gutter) + 104px); }  /* clear of the bar's end on a tablet */
  .ground { top: calc(env(safe-area-inset-top, 0px) + var(--gutter) + 136px); }
}

.loading { position: fixed; left: 50%; top: 50%; transform: translate(-50%, -50%); color: var(--muted); }

@media (max-width: 720px) {
  .dek { display: none; }
  h1 { font-size: 30px; }
  .tally-year { font-size: 30px; }
  .tally-count { font-size: 12px; }
  .masthead, .tally { top: calc(env(safe-area-inset-top, 0px) + 14px); }
  .lang { top: calc(env(safe-area-inset-top, 0px) + 66px); }
  .ground { top: calc(env(safe-area-inset-top, 0px) + 134px); }  /* under the Map pill */
  .sibling { top: calc(env(safe-area-inset-top, 0px) + 98px); }
  /* Modes: one scrolling strip above the timeline. */
  .modes { top: auto; left: 12px; right: 12px; transform: none; bottom: calc(env(safe-area-inset-bottom, 0px) + 100px);
    overflow-x: auto; scrollbar-width: none; justify-content: flex-start; }
  .modes::-webkit-scrollbar { display: none; }
  .modes button { flex: 1 0 auto; padding: 8px 7px; }
  /* Panel: a sheet above the modes, folded to its handle by default. */
  .panel { top: auto; left: 12px; right: 12px; width: auto; bottom: calc(env(safe-area-inset-bottom, 0px) + 156px);
    max-height: 48vh; padding: 0 14px 12px; }
  .sheet-handle { width: calc(100% + 28px); margin: 0 -14px 8px; padding: 12px 14px; }
  /* Card: a sheet from the bottom edge. */
  .card, .card.pinned { left: 0 !important; right: 0; top: auto !important; bottom: 0; width: auto; max-height: 72vh;
    border-radius: 14px 14px 0 0; padding-bottom: env(safe-area-inset-bottom, 0px); }
  .card .photo img { border-radius: 14px 14px 0 0; max-height: 190px; }
  .timeline { padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 10px); }
  .timeline canvas { height: 76px; }
  .veil-bottom { height: 150px; }  /* over the strip of modes too */
  .play { width: 40px; height: 40px; margin-bottom: 18px; }
}
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* About: a reading page over the map. */
.lang .about-open { color: var(--ink); }
.about { border: 0; border-radius: 12px; padding: 0; width: min(640px, calc(100vw - 32px)); max-height: calc(100vh - 48px);
  box-shadow: 0 20px 60px rgba(30, 40, 50, .25); color: var(--ink); overflow-y: auto; }
.about::backdrop { background: rgba(228, 232, 234, .7); }
/* The dialog scrolls, not the article: an article that scrolls would shrink beside the floating close button. */
.about article { padding: 28px 32px 32px; }
.about h2 { margin: 0 0 12px; font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
.about h3 { margin: 22px 0 6px; font-size: 15px; font-weight: 700; }
.about p, .about li { line-height: 1.6; max-width: 64ch; }
.about ul { padding-left: 18px; margin: 6px 0 0; }
.about li { margin-bottom: 6px; }
.about a { color: var(--ink); text-decoration-color: var(--red); text-underline-offset: 3px; }
.about .notice { border-left: 3px solid var(--red); padding-left: 12px; font-weight: 500; }
.about-close { position: sticky; float: right; top: 10px; margin: 10px 10px 0 0; width: 32px; height: 32px; border: 0;
  border-radius: 50%; background: var(--sky); cursor: pointer; font-size: 18px; }
@media (max-width: 720px) { .about article { padding: 20px 18px 24px; } }
.contribute { margin: 14px 0 0; padding-top: 10px; border-top: 1px solid var(--rule); font-size: 12px; }
.contribute a { color: var(--ink); text-decoration-color: var(--red); text-underline-offset: 3px; }
.card .photo button[disabled] { opacity: .35; cursor: default; }
.card .photo .gone { position: absolute; inset: 0; margin: 0; display: grid; place-content: center; text-align: center; gap: 4px;
  padding: 0 40px; background: var(--sky); font-size: 12px; border-radius: 10px 10px 0 0; }
.card .photo.failed img { visibility: hidden; height: 190px; }

/* Quests. The playful part of the page, in the city's own sign: every answer is worth three red crosses, the
   X X X of the arms of Amsterdam. Black and white otherwise, like the rest of the map. */
/* Quests: the first pill in the row of About and the languages. */
.lang .quests-open { display: inline-flex; align-items: center; gap: 6px; color: var(--ink); }
.lang .quests-open svg { width: 15px; height: 5px; stroke: var(--red); stroke-width: 2; stroke-linecap: round; fill: none; }
.lang .quests-open:hover { background: #f1f3f4; }
.q-x { display: inline-flex; gap: 1px; font-weight: 800; font-size: 15px; line-height: 1; letter-spacing: -0.02em; }
.q-x i { font-style: normal; color: #d8dcde; }
.q-x i.on { color: var(--red); }
.q-level { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; color: var(--muted); }
.q-level .q-x { font-size: 13px; }

.quests { width: min(980px, calc(100vw - 32px)); }
.quests article { padding: 24px 28px 26px; }
.quests h2 { margin: 0; }
.quests .q-lede { max-width: 70ch; margin: 6px 0 0; font-size: 13px; line-height: 1.5; }
.quests .q-score { font-size: 13px; color: var(--muted); margin: 6px 0 0; }
.quests .q-score b { color: var(--red); font-size: 18px; }
.quests .q-grid { list-style: none; margin: 16px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.quests .q-tile { margin: 0; max-width: none; line-height: 1.35; }
.q-tile { position: relative; display: flex; flex-direction: column; gap: 4px; padding: 14px 14px 12px; border-radius: 10px;
  background: var(--paper); box-shadow: inset 0 0 0 1px var(--rule); }
.q-tile.l3 { box-shadow: inset 0 0 0 2px var(--ink); }
.q-tile h3 { margin: 2px 0 0; font-size: 15px; line-height: 1.25; letter-spacing: -0.01em; }
.q-tile p { margin: 0; color: #4b5257; font-size: 12px; line-height: 1.4; flex: 1; }
.q-tile footer { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; gap: 6px; }
.q-tile .q-progress { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.q-tile.complete::after { content: "×"; position: absolute; top: 6px; right: 12px; color: var(--red); font-weight: 800; font-size: 20px; }
.quests .q-start { border: 0; background: var(--ink); color: var(--paper); border-radius: 999px; padding: 5px 12px; cursor: pointer; font-weight: 600; font-size: 12px; }
.q-tile.complete .q-start { background: var(--paper); color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }

/* The open quest: a slip at the right, above the timeline. */
.quest { position: fixed; z-index: 11; right: var(--gutter); bottom: 132px; width: 350px; max-height: calc(100vh - 230px); overflow-y: auto;
  background: var(--paper); border-radius: 12px; box-shadow: 0 10px 34px rgba(30, 40, 50, .2); font-size: 13px; }
.quest header { cursor: pointer; display: flex; align-items: center; gap: 10px; padding: 12px 44px 11px 16px; background: var(--ink); color: var(--paper);
  border-radius: 12px 12px 0 0; position: sticky; top: 0; z-index: 1; }
.quest header b { font-size: 14px; }
.quest header .q-level { margin-left: auto; color: #b9c0c4; }
.quest header .q-x i:not(.on) { color: #4a4f53; }
.quest .q-close { position: absolute; top: 6px; right: 6px; width: 30px; height: 30px; border: 0; border-radius: 50%; z-index: 2;
  background: none; color: var(--paper); cursor: pointer; font-size: 20px; line-height: 1; }
.quest .q-steps { display: flex; align-items: center; gap: 4px; padding: 10px 16px 0; }
.quest .q-steps i { width: 18px; height: 4px; border-radius: 2px; background: #dfe3e5; }
.quest .q-steps i.done { background: var(--red); }
.quest .q-steps i.now { background: var(--ink); }
.quest .q-steps span { margin-left: auto; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.quest .q-photo { position: relative; margin: 10px 16px 0; overflow: hidden; height: 170px; border-radius: 8px; background: var(--sky); }
.quest .q-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.quest .q-photo .year { position: absolute; left: 8px; bottom: 8px; background: var(--ink); color: var(--paper); font-weight: 700; font-size: 12px; padding: 2px 7px; border-radius: 4px; }
.quest .q-credit { font-size: 11px; color: var(--muted); padding: 4px 16px 0; margin: 0; }
.quest .q-credit a, .quest .q-found a { color: inherit; text-decoration-color: var(--red); text-underline-offset: 3px; }
.quest .q-riddle { margin: 0; padding: 10px 16px 0; font-size: 15px; line-height: 1.5; }
.quest .q-hints { margin: 8px 16px 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 4px; }
.quest .q-hints li { font-size: 13px; line-height: 1.45; padding-left: 10px; border-left: 2px solid var(--red); }
.quest .q-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 12px 16px 14px; }
.quest .q-actions button, .quest .q-options button { border: 1px solid var(--rule); background: var(--paper); border-radius: 999px;
  padding: 6px 13px; cursor: pointer; font-weight: 600; font-size: 12px; }
.quest .q-actions button small { color: var(--red); font-weight: 800; }
.quest .q-actions .primary { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.quest .q-worth { margin-left: auto; }
.quest .q-feedback { margin: 0; padding: 8px 16px 0; font-size: 13px; color: var(--muted); min-height: 1.4em; }
.quest .q-actions .q-feedback { padding: 0; }
.quest .q-feedback.hot { color: var(--red); font-weight: 600; }
.quest .q-feedback.warm { color: #b45309; }
.quest .q-feedback.cold { color: #3f6b8f; }
.quest .q-feedback.miss { animation: q-shake .35s; }
/* year */
.quest .q-year { padding: 10px 16px 0; }
.quest .q-year output { display: block; font-size: 44px; font-weight: 800; letter-spacing: -0.04em; line-height: 1; font-variant-numeric: tabular-nums; }
.quest .q-year input { width: 100%; margin: 10px 0 2px; accent-color: var(--red); }
.quest .q-scale { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.quest .q-yeardiff { margin: 0 0 6px; }
/* choice */
.quest .q-options { display: flex; flex-direction: column; gap: 6px; padding: 12px 16px 0; }
.quest .q-options button { text-align: left; border-radius: 8px; padding: 9px 12px; font-size: 13px; font-weight: 500; }
.quest .q-options button:hover:not(:disabled) { border-color: var(--ink); }
.quest .q-options button.wrong { text-decoration: line-through; color: var(--muted); }
.quest .q-options button.right { background: var(--ink); color: var(--paper); border-color: var(--ink); }
/* the answer */
.quest .q-found { position: relative; margin: 14px 16px 0; padding: 14px 12px 10px; background: #f3f4f5; border-radius: 8px; }
.quest .q-found p { margin: 0; font-size: 13px; line-height: 1.5; }
.quest .q-found .q-earned { margin-top: 6px; font-size: 12px; color: var(--muted); }
.quest .q-found .q-earned:empty { display: none; }
.q-stamp { position: absolute; top: -12px; right: 10px; padding: 3px 8px; background: var(--paper); border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .12); animation: q-stamp .45s cubic-bezier(.2, 1.6, .4, 1); }
.q-stamp .q-x { font-size: 20px; }
.quest .q-then { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 8px; }
.quest .q-then figure { margin: 0; position: relative; }
.quest .q-then img { width: 100%; height: 96px; object-fit: cover; border-radius: 6px; display: block; }
.quest .q-then figcaption { position: absolute; left: 5px; bottom: 5px; background: var(--ink); color: var(--paper); font-size: 11px; font-weight: 700; padding: 1px 6px; border-radius: 4px; }
/* the result */
.quest .q-result { padding: 18px 16px 4px; }
.quest .q-total { margin: 0; font-size: 15px; color: var(--muted); }
.quest .q-total b { font-size: 48px; font-weight: 800; letter-spacing: -0.04em; color: var(--ink); }
.quest .q-verdict { margin: 2px 0 0; font-size: 16px; font-weight: 700; }
.quest .q-line { margin: 10px 0 0; font-size: 20px; font-weight: 800; color: var(--red); letter-spacing: 0.04em; word-spacing: 0.3em; }
@keyframes q-stamp { from { transform: rotate(-20deg) scale(2); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes q-shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }
.quest.folded > :not(header):not(.q-close):not(.q-steps) { display: none; }
.quest.folded .q-steps { padding-bottom: 10px; }
@media (max-width: 720px) {
  .quest { left: 12px; right: 12px; width: auto; bottom: auto; top: calc(env(safe-area-inset-top, 0px) + 102px); max-height: 50vh; }
  .quest .q-photo { height: 120px; }
  /* On a phone the quests are a list: level and title on the left, progress and the button on the right. */
  .quests .q-grid { grid-template-columns: 1fr; gap: 6px; }
  .quests article { padding: 20px 16px; }
  .quests .q-lede { font-size: 12px; }
  .q-tile { display: grid; grid-template-columns: 1fr auto; column-gap: 10px; row-gap: 2px; align-items: center; padding: 10px 12px; }
  .q-tile .q-level { grid-column: 1; grid-row: 1; }
  .q-tile h3 { grid-column: 1; grid-row: 2; margin: 0; }
  .q-tile p { display: none; }
  .q-tile footer { grid-column: 2; grid-row: 1 / span 2; margin: 0; gap: 10px; }
  .q-tile.complete::after { display: none; }
  /* During a quest the phone shows the map and the riddle only; colour hints switch modes from the riddle itself. */
  body.questing .panel, body.questing .modes, body.questing .timeline, body.questing .lang, body.questing .tally { display: none; }
  body.questing .quest { top: calc(env(safe-area-inset-top, 0px) + 62px); max-height: 56vh; }
  /* Quests leave the language row for a pill opposite it, so the four colourings fit without scrolling. */
  .lang .quests-open { position: fixed; left: 12px; top: calc(env(safe-area-inset-top, 0px) + 66px); flex: none; margin: 0;
    padding: 4px 11px; border: 0; border-radius: 999px; background: var(--paper); font-size: 12px; font-weight: 600; }
  /* Street names, War and Other too, under Quests, so the four colourings fit at 360 px; Map opposite, under the
     languages. */
  .modes .streets-mode, .modes .war-pick, .modes .other-pick, .modes .map-pick { position: fixed; left: 12px; top: calc(env(safe-area-inset-top, 0px) + 98px); flex: none;
    padding: 4px 11px; font-size: 12px; font-weight: 600; background: var(--paper); }
  .modes .war-pick { top: calc(env(safe-area-inset-top, 0px) + 130px); }
  .modes .other-pick { top: calc(env(safe-area-inset-top, 0px) + 162px); }
  .modes .map-pick { left: auto; right: 12px; margin: 0; border: 0; border-radius: 999px; }
  .modes .pick { padding: 0; border-radius: 999px; }
  .modes .pick summary { padding: 4px 11px; border-radius: 999px; font-weight: 600; }
}
@media (prefers-reduced-motion: reduce) { .quest .q-feedback.miss, .q-stamp { animation: none; } }