/* base reset (the artifact viewer adds this itself; the website needs it here) */
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; }
img { max-width: 100%; }
[hidden] { display: none !important; }

/* Layout: survey-sheet header → map (left) + register (right) → dossier for the selected site → timeline → help, red flags, method. Cartographic slate palette; status colours are semantic. */
:root {
  --bg: #EDF0EF;
  --paper: #F8F8F5;
  --water: #D5E1E4;
  --land: #FAF9F5;
  --land-far: #E9EAE5;
  --border: #9BA7AA;
  --rule: #CBD3D4;
  --fg: #172024;
  --muted: #56656B;
  --accent: #0D5868;
  --accent-soft: #D6E6E9;
  --st-active: #CF2338;
  --st-reduced: #D9820A;
  --st-raided: #7448C8;
  --st-demolished: #5F686C;
  --st-relocated: #1B6FD1;
  --st-unknown: #9AA3A6;
  --halo: #FAF9F5;
  --river: #7FA8B8;
  --river-label: #3F7487;
  --road: #D8BE93;
  --urban: #ECE5D8;
  --admin1: #B3BCBE;
  --grat: #C3D2D7;
  --f-display: "Noto Serif SC", "Songti SC", "STSong", serif;
  --f-body: -apple-system, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1416; --paper: #141C1F; --water: #0F1A1E; --land: #1C2529; --land-far: #161D20;
    --border: #45545A; --rule: #2A363B; --fg: #E4EBED; --muted: #93A3A9; --accent: #63C3D6; --accent-soft: #17343B;
    --st-active: #FF5468; --st-reduced: #F2A33A; --st-raided: #A383F0; --st-demolished: #8E989C; --st-relocated: #5AA2F5; --st-unknown: #6E7A7F;
    --halo: #1C2529; --river: #3B6474; --river-label: #7FB1C2; --road: #5E5137; --urban: #262F33; --admin1: #3A474C; --grat: #18262B; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0E1416; --paper: #141C1F; --water: #0F1A1E; --land: #1C2529; --land-far: #161D20;
  --border: #45545A; --rule: #2A363B; --fg: #E4EBED; --muted: #93A3A9; --accent: #63C3D6; --accent-soft: #17343B;
  --st-active: #FF5468; --st-reduced: #F2A33A; --st-raided: #A383F0; --st-demolished: #8E989C; --st-relocated: #5AA2F5; --st-unknown: #6E7A7F;
  --halo: #1C2529; --river: #3B6474; --river-label: #7FB1C2; --road: #5E5137; --urban: #262F33; --admin1: #3A474C; --grat: #18262B; color-scheme: dark;
}
* { box-sizing: border-box; }
body { background: var(--bg); color: var(--fg); font-family: var(--f-body); font-size: 15px; line-height: 1.65; }
/* grid children may shrink, so wide content (the full table) scrolls inside its own box instead of widening the page */
.wrap > * { min-width: 0; }
.wrap { max-width: 1320px; margin: 0 auto; padding-inline: clamp(16px, 3vw, 32px); padding-block: 28px 64px; display: grid; gap: 28px; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--f-display); text-wrap: balance; margin: 0; }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.eyebrow { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }

/* header */
header.sheet { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px 32px; align-items: end; border-bottom: 2px solid var(--fg); padding-bottom: 16px; }
header.sheet h1 { font-size: clamp(30px, 5vw, 52px); font-weight: 900; letter-spacing: .02em; line-height: 1.1; }
header.sheet .lede { grid-column: 1 / -1; max-width: 70ch; color: var(--muted); margin: 0; }
.legend-head { display: grid; gap: 4px; justify-items: end; text-align: right; }
.legend-head .big { font-family: var(--f-mono); font-size: 13px; }
.statbar { display: flex; height: 8px; width: min(320px, 70vw); border-radius: 2px; overflow: hidden; background: var(--rule); }
.statbar span { display: block; height: 100%; }
@media (max-width: 720px) { header.sheet { grid-template-columns: 1fr; } .legend-head { justify-items: start; text-align: left; } }

/* filters */
.filters { display: grid; gap: 10px; }
.chiprow { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.chiprow .lbl { font-size: 12px; color: var(--muted); margin-right: 4px; min-width: 3em; }
.chip { font: inherit; font-size: 13px; border: 1px solid var(--rule); background: var(--paper); color: var(--fg); border-radius: 999px; padding: 3px 11px; cursor: pointer; display: inline-flex; gap: 6px; align-items: center; }
.chip .n { font-family: var(--f-mono); font-size: 11.5px; color: var(--muted); }
.chip[aria-pressed="true"] { border-color: var(--fg); background: var(--fg); color: var(--bg); }
.chip[aria-pressed="true"] .n { color: inherit; opacity: .75; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex: none; }
.search { font: inherit; font-size: 14px; padding: 6px 10px; border: 1px solid var(--rule); background: var(--paper); color: var(--fg); border-radius: 6px; width: min(320px, 100%); }

/* map + register */
.atlas { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 0; border: 1px solid var(--border); background: var(--paper); }
@media (max-width: 960px) { .atlas { grid-template-columns: minmax(0, 1fr); } }
.mapbox { position: relative; height: clamp(480px, 78vh, 900px); background: var(--water); overflow: hidden; touch-action: none; }
#map { display: block; width: 100%; height: 100%; cursor: grab; }
#map:active { cursor: grabbing; }
.country { fill: var(--land-far); stroke: var(--border); stroke-width: .6; vector-effect: non-scaling-stroke; fill-rule: evenodd; }
.country.focus { fill: var(--land); }
.grat { fill: none; stroke: var(--grat); stroke-width: .5; vector-effect: non-scaling-stroke; }
.urban { fill: var(--urban); stroke: none; }
.admin1 { fill: none; stroke: var(--admin1); stroke-width: .7; stroke-dasharray: 4 3; vector-effect: non-scaling-stroke; }
.road { fill: none; stroke: var(--road); stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.road.r1 { stroke-width: 1.4; }
.road.r2 { stroke-width: .8; }
.lake { fill: var(--water); stroke: var(--river); stroke-width: .5; vector-effect: non-scaling-stroke; }
.river { fill: none; stroke: var(--river); stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.river.b1 { stroke-width: 1.7; } .river.b2 { stroke-width: 1.3; } .river.b3 { stroke-width: 1; } .river.b4 { stroke-width: .75; }
.plabel { font-size: 10.5px; fill: var(--muted); letter-spacing: .12em; paint-order: stroke; stroke: var(--halo); stroke-width: 2.5px; pointer-events: none; }
.rlabel { font-size: 10.5px; fill: var(--river-label); letter-spacing: .2em; paint-order: stroke; stroke: var(--halo); stroke-width: 2.5px; pointer-events: none; }
.tlabel.cap { font-size: 12px; font-weight: 700; }
.tlabel.hot { font-weight: 600; }
.spider { stroke: var(--fg); stroke-width: 1; opacity: .45; }
.clabel { font-family: var(--f-display); font-weight: 600; fill: var(--muted); font-size: 14px; letter-spacing: .3em; paint-order: stroke; stroke: var(--halo); stroke-width: 3px; pointer-events: none; }
.tlabel { font-size: 11px; fill: var(--fg); paint-order: stroke; stroke: var(--halo); stroke-width: 3px; pointer-events: none; }
.tdot { fill: var(--fg); }
.mk { cursor: pointer; }
.mk circle.core { stroke: var(--halo); stroke-width: 1.5; }
.mk circle.approx { fill: none; stroke-dasharray: 2 2; stroke-width: 1.3; }
.mk.hub circle.area { opacity: .16; }
.mk.sel circle.core { stroke: var(--fg); stroke-width: 2.5; }
.mk.pending circle.core { fill-opacity: .45; }
.mk.pending.sel circle.core { fill-opacity: .8; }
.ckb { display: inline-flex; align-items: center; font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px dashed var(--muted); color: var(--muted); margin-left: 6px; }
.ckb.ok { border-style: solid; border-color: var(--accent); color: var(--accent); }
.row .ck { font-size: 11px; color: var(--muted); }
.cluster { cursor: pointer; }
.cluster .cbg { fill: var(--fg); stroke: var(--halo); stroke-width: 1.5; }
.cluster .ring { stroke: var(--fg); stroke-width: .6; }
.cluster:hover .cbg, .cluster:focus-visible .cbg { stroke: var(--accent); stroke-width: 2.5; }
.cluster text { fill: var(--bg); font-family: var(--f-mono); font-size: 11px; font-weight: 500; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.maptools { position: absolute; left: 10px; top: 10px; display: flex; flex-wrap: wrap; gap: 6px; max-width: calc(100% - 64px); }
.maptools button, .zoombtns button { font: inherit; font-size: 12px; background: var(--paper); color: var(--fg); border: 1px solid var(--border); border-radius: 4px; padding: 3px 9px; cursor: pointer; }
.maptools button:hover, .zoombtns button:hover { border-color: var(--fg); }
.zoombtns { position: absolute; right: 10px; top: 10px; display: grid; gap: 4px; }
.zoombtns button { width: 30px; height: 30px; padding: 0; font-size: 16px; }
.mapkey { position: absolute; left: 10px; bottom: 10px; background: color-mix(in srgb, var(--paper) 92%, transparent); border: 1px solid var(--rule); border-radius: 4px; padding: 5px 9px; font-size: 11.5px; max-width: calc(100% - 150px); }
.mapkey summary { cursor: pointer; font-weight: 600; font-size: 12px; }
.keygrid { display: grid; grid-template-columns: repeat(2, max-content); gap: 3px 14px; margin-top: 5px; }
.keygrid.one { grid-template-columns: max-content; }
.keygrid div { display: flex; gap: 6px; align-items: center; }
.scalebar { position: absolute; right: 10px; bottom: 10px; font-family: var(--f-mono); font-size: 11px; color: var(--fg); display: grid; justify-items: end; gap: 2px; }
.scalebar i { display: block; height: 5px; border: 1.5px solid var(--fg); border-top: 0; }
.tip { position: absolute; pointer-events: none; background: var(--fg); color: var(--bg); font-size: 12px; padding: 3px 8px; border-radius: 3px; white-space: nowrap; transform: translate(-50%, calc(-100% - 12px)); }

.register { border-left: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; height: clamp(480px, 78vh, 900px); }
.atlas:fullscreen { background: var(--paper); }
.atlas:fullscreen .mapbox, .atlas:fullscreen .register { height: 100vh; }
@media (max-width: 960px) { .register { border-left: 0; border-top: 1px solid var(--border); height: auto; max-height: 520px; } }
.register .rhead { padding: 10px 14px; border-bottom: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.register ol { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; min-height: 0; }
.register li.grp { position: sticky; top: 0; background: var(--paper); font-family: var(--f-display); font-weight: 600; font-size: 13px; padding: 8px 14px 4px; border-bottom: 1px solid var(--rule); z-index: 1; display: flex; justify-content: space-between; }
.register li.grp .n { font-family: var(--f-mono); font-weight: 400; color: var(--muted); font-size: 12px; }
.register button.row { all: unset; box-sizing: border-box; cursor: pointer; display: grid; grid-template-columns: 10px minmax(0, 1fr) auto; gap: 4px 10px; align-items: baseline; width: 100%; padding: 8px 14px; border-bottom: 1px solid var(--rule); }
.register button.row:hover { background: var(--accent-soft); }
.register button.row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.register button.row[aria-current="true"] { background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.row .nm { font-weight: 600; min-width: 0; overflow-wrap: anywhere; }
.row .tw { grid-column: 2 / 4; font-size: 12.5px; color: var(--muted); min-width: 0; overflow-wrap: anywhere; }
.row .st { font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.empty { padding: 24px 14px; color: var(--muted); }

/* dossier */
.dossier { background: var(--paper); border: 1px solid var(--border); padding: clamp(16px, 3vw, 28px); display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 20px 36px; }
@media (max-width: 860px) { .dossier { grid-template-columns: minmax(0, 1fr); } }
.dossier h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 900; }
.dossier .en { color: var(--muted); font-size: 14px; margin-top: 2px; }
.dossier .summary { margin: 14px 0 0; max-width: 62ch; }
.pill { display: inline-flex; gap: 6px; align-items: center; font-size: 12.5px; padding: 2px 10px 2px 8px; border-radius: 999px; border: 1px solid currentColor; font-weight: 600; }
.facts { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 8px 16px; margin: 0; font-size: 14px; }
.facts dt { color: var(--muted); font-size: 12.5px; padding-top: 1px; }
.facts dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.srcs { margin: 0; padding-left: 1.2em; font-size: 13.5px; display: grid; gap: 6px; }
.srcs .pub { font-weight: 600; }
.srcs .dt { color: var(--muted); font-family: var(--f-mono); font-size: 12px; }
.linkrow { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 13px; }
.note { font-size: 12.5px; color: var(--muted); }

/* lower sections */
.cols { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 28px; align-items: start; }
@media (max-width: 960px) { .cols { grid-template-columns: minmax(0, 1fr); } }
section h2.sec { font-size: 22px; font-weight: 900; padding-bottom: 8px; border-bottom: 1px solid var(--fg); margin-bottom: 14px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
section h2.sec .eyebrow { font-weight: 400; }
.tl { list-style: none; margin: 0; padding: 0; display: grid; }
.tl li { display: grid; grid-template-columns: 7.2em minmax(0, 1fr); gap: 4px 14px; padding: 10px 0; border-bottom: 1px solid var(--rule); }
.tl .d { font-family: var(--f-mono); font-size: 12.5px; color: var(--muted); padding-top: 2px; }
.tl .t { font-weight: 600; }
.tl .c { font-size: 11.5px; color: var(--accent); margin-left: 6px; font-weight: 400; white-space: nowrap; }
.tl .x { grid-column: 2; font-size: 13.5px; color: var(--muted); }
.tl .x a { font-size: 12px; }
.help { border: 2px solid var(--st-active); background: var(--paper); padding: 18px 20px; display: grid; gap: 12px; }
.help h3 { font-size: 18px; }
.help dl { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 8px 14px; margin: 0; }
.help dt { font-family: var(--f-mono); font-weight: 500; font-size: 15px; white-space: nowrap; }
.help dd { margin: 0; font-size: 13.5px; min-width: 0; }
.flags { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; font-size: 14px; }
.side { display: grid; gap: 22px; }
.method p, .method li { font-size: 13.5px; color: var(--muted); max-width: 70ch; }
.method ul { padding-left: 1.2em; margin: 0; display: grid; gap: 4px; }
details.dropped summary { cursor: pointer; font-size: 13.5px; color: var(--muted); }
details.dropped ul { font-size: 12.5px; color: var(--muted); }
.dnav { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; padding-bottom: 12px; border-bottom: 1px solid var(--rule); }
.dnav .pos { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; margin-right: auto; }
.dnav .btn[disabled] { opacity: .4; cursor: default; }
.dnav kbd { font-family: var(--f-mono); font-size: 11px; border: 1px solid var(--rule); border-radius: 3px; padding: 0 4px; color: var(--muted); }
.tag { display: inline-block; font-size: 12px; padding: 0 8px; border: 1px solid var(--rule); border-radius: 3px; margin: 0 4px 4px 0; }
.tl-mini li { grid-template-columns: 6.2em minmax(0, 1fr); padding: 6px 0; }
.tl-mini .x { grid-column: 2; color: var(--fg); }
.tablewrap { overflow-x: auto; border: 1px solid var(--border); background: var(--paper); max-height: 640px; overflow-y: auto; }
table.all { border-collapse: collapse; width: 100%; min-width: 760px; font-size: 13.5px; }
table.all th { position: sticky; top: 0; background: var(--paper); text-align: left; font-weight: 600; font-size: 12.5px; color: var(--muted); border-bottom: 1px solid var(--fg); padding: 8px 10px; white-space: nowrap; }
table.all th button { all: unset; cursor: pointer; }
table.all th button:focus-visible { outline: 2px solid var(--accent); }
table.all th[aria-sort="ascending"] button::after { content: " ↑"; }
table.all th[aria-sort="descending"] button::after { content: " ↓"; }
table.all td { padding: 7px 10px; border-bottom: 1px solid var(--rule); vertical-align: top; }
table.all td.num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
table.all tbody tr { cursor: pointer; }
table.all tbody tr:hover { background: var(--accent-soft); }
.tabletools { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }
.btn { font: inherit; font-size: 13px; background: var(--paper); color: var(--fg); border: 1px solid var(--border); border-radius: 4px; padding: 4px 12px; cursor: pointer; }
.btn:hover { border-color: var(--fg); }
#csvOut { width: 100%; height: 140px; font-family: var(--f-mono); font-size: 12px; background: var(--paper); color: var(--fg); border: 1px solid var(--rule); }
.preview { border: 1.5px dashed var(--st-reduced); background: var(--paper); padding: 10px 14px; font-size: 13.5px; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.preview b { font-family: var(--f-mono); letter-spacing: .1em; color: var(--st-reduced); }
.loading { position: absolute; inset: 0; display: grid; place-items: center; background: color-mix(in srgb, var(--water) 85%, transparent); color: var(--fg); font-size: 14px; padding: 16px; text-align: center; }
.dl { display: inline-flex; gap: 6px; }
.dl .btn { text-decoration: none; }
.foot { border-top: 1px solid var(--fg); padding-top: 14px; display: grid; gap: 4px; }
.foot p { margin: 0; font-size: 12.5px; color: var(--muted); max-width: 90ch; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }