/* Isometric Chennai viewer. Charcoal chrome over a bright map; Chennai street-name boards (green, cream rule, Tamil over English) carry place names. */
:root {
  --ink: #201e1c; --ink-2: #2a2724; --ink-3: #3a3530; --line: rgba(241, 232, 210, .14);
  --cream: #f1e8d2; --cream-2: rgba(241, 232, 210, .72); --cream-3: rgba(241, 232, 210, .5);
  --terra: #c8452d; --terra-2: #d9573e; --green: #2d6a4f; --green-2: #347a5b; --gold: #e9c46a;
  --chrome: rgba(32, 30, 28, .94);
  --lift: 0 8px 24px rgba(10, 9, 8, .32), 0 1px 3px rgba(10, 9, 8, .38);
  --f-text: 'Tamil Text', 'Latin Text', 'Hind Madurai', system-ui, sans-serif;
  --f-sign: 'Tamil Display', 'Latin Text', 'Hind Madurai', system-ui, sans-serif;
  --f-pixel: 'Pixel', 'Latin Text', monospace;
  --gap: 14px; --dock-w: 0px; --nav-w: 228px; --ease: cubic-bezier(.16, 1, .3, 1);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: #cfc9bc; color: var(--cream); font: 400 14px/1.45 var(--f-text); font-variant-numeric: lining-nums; -webkit-font-smoothing: antialiased; }
::selection { background: var(--gold); color: var(--ink); }
button, input { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
[hidden] { display: none !important; }
a { color: var(--gold); text-underline-offset: 3px; text-decoration-thickness: 1px; }
.i { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; flex: none; }
[lang="ta"] { font-family: var(--f-text); }

#map { position: fixed; inset: 0; }
#map canvas { image-rendering: pixelated; }
/* locator: Greater Chennai laid flat, north up; the gold outline is what the screen shows */
.mini { --mini-h: min(204px, 30vh); position: fixed; z-index: 3; right: var(--gap); bottom: var(--gap); height: var(--mini-h); aspect-ratio: 250 / 600;
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--ink); box-shadow: var(--lift); cursor: pointer; touch-action: none; user-select: none; }
.mini.dragging { cursor: grabbing; }
.mini img { display: block; width: 100%; height: 100%; -webkit-user-drag: none; }
.mini > svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.mini polygon { fill: color-mix(in srgb, var(--gold) 18%, transparent); stroke: var(--gold); stroke-width: 2; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.mini circle { fill: none; stroke: var(--gold); stroke-width: 2; vector-effect: non-scaling-stroke; }
.mini-n { position: absolute; top: 6px; left: 6px; display: flex; align-items: center; gap: 4px; padding: 4px 6px 3px; border-radius: 6px; background: var(--chrome); color: var(--cream); font: 400 10px/1 var(--f-pixel); }
.mini-n svg { width: 7px; height: 9px; fill: var(--gold); }

/* top left: logotype and visitor pill */
.brand { position: fixed; z-index: 5; top: var(--gap); left: var(--gap); display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.chip { background: var(--chrome); border: 1px solid var(--line); box-shadow: var(--lift); }
.logo { display: flex; align-items: baseline; gap: 8px; padding: 7px 12px 6px; border-radius: 12px; text-decoration: none; color: var(--cream); }
.logo-en { font: 400 16px/1 var(--f-pixel); letter-spacing: 0; text-transform: uppercase; }   /* Silkscreen holds its grid only at multiples of 8px */
.logo-ta { font: 600 15px/1 var(--f-sign); color: var(--gold); }
.presence { display: flex; align-items: center; gap: 7px; height: 26px; padding: 0 10px 0 9px; border-radius: 999px; font-size: 12px; color: var(--cream-2); font-variant-numeric: tabular-nums; }
.presence b { color: var(--cream); font-weight: 700; }
.presence .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cream-3); }
.presence.live .dot { background: var(--gold); animation: live 2.4s var(--ease) infinite; }   /* pulses only while people are on the map */
.presence .sep { color: var(--cream-3); font-style: normal; }
@keyframes live { 0% { box-shadow: 0 0 0 0 rgba(233, 196, 106, .55); } 70%, 100% { box-shadow: 0 0 0 7px rgba(233, 196, 106, 0); } }

/* top right: search pill and the labelled tool pill */
.topright { position: fixed; z-index: 6; top: var(--gap); right: var(--gap); display: flex; align-items: flex-start; gap: 8px; }
.search { position: relative; display: flex; align-items: center; gap: 7px; width: 264px; height: 44px; padding: 0 10px 0 14px; border-radius: 999px; }
.search input { flex: 1; min-width: 0; height: 100%; background: none; border: 0; outline: 0; color: var(--cream); font-size: 14px; }
.search input::placeholder { color: var(--cream-2); }
.search input::-webkit-search-cancel-button { display: none; }
.search kbd { font: 600 11px/1 var(--f-text); color: var(--cream-3); border: 1px solid var(--line); border-radius: 5px; padding: 3px 6px; }
.search:focus-within { border-color: rgba(233, 196, 106, .55); }
.search:focus-within kbd { visibility: hidden; }
.tools { display: flex; align-items: stretch; height: 44px; padding: 3px; border-radius: 14px; }
.tool { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-width: 46px; padding: 0 5px; border-radius: 10px; color: var(--cream-2); font: 600 10px/1 var(--f-text); letter-spacing: .01em; transition: background .2s var(--ease), color .2s var(--ease); }
.tool:hover { background: var(--ink-3); color: var(--cream); }
.tool[aria-pressed="true"] { background: var(--terra); color: #fff8ec; }
.tool[aria-pressed="true"]:hover { background: var(--terra-2); }
.tool .badge { position: absolute; transform: translate(12px, -14px); min-width: 16px; height: 16px; padding: 0 4px; border-radius: 8px; background: var(--gold); color: var(--ink); font: 700 10px/16px var(--f-text); }
.tool { position: relative; }
.tool .i { width: 18px; height: 18px; }
.tools .sep { width: 1px; margin: 8px 3px; background: var(--line); }
.tools.collapsed .tool:not([data-tool="collapse"]), .tools.collapsed .sep { display: none; }
.tools.collapsed [data-tool="collapse"] .i { transform: rotate(180deg); }
.tool[data-tool="collapse"] { min-width: 30px; }
.tool-search { display: none; }

/* search results */
.results { position: absolute; top: 52px; right: 0; width: 352px; max-height: min(460px, calc(100vh - 120px)); overflow: auto; padding: 6px; border-radius: 16px; }
.results .row { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border-radius: 10px; text-align: left; }
.results .row[aria-selected="true"], .results .row:hover { background: var(--ink-3); }
.results .row .i { color: var(--cream-3); }
.results .t { display: flex; flex-direction: column; min-width: 0; }
.results .t b { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.results .t span { font-size: 12.5px; color: var(--cream-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.results .empty { padding: 12px; color: var(--cream-2); font-size: 13px; }
.results mark { background: none; color: var(--gold); }

/* the street-name board */
.num { display: inline-grid; place-items: center; min-width: 26px; height: 24px; padding: 0 5px; border-radius: 5px; background: var(--green); color: var(--cream); font: 700 12.5px/1 var(--f-text); outline: 1px solid rgba(241, 232, 210, .9); outline-offset: -3px; font-variant-numeric: tabular-nums; flex: none; }
.sign { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 8px; background: var(--green); outline: 1.5px solid var(--cream); outline-offset: -6px; box-shadow: 0 6px 16px rgba(10, 9, 8, .3); }
.sign .num { background: var(--cream); color: var(--green); outline: 0; min-width: 28px; height: 28px; font-size: 14px; }
.sign-t { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.sign-ta { font: 600 18px/1.25 var(--f-sign); color: #fffaf0; }
.sign-en { font: 700 12px/1.2 var(--f-text); letter-spacing: .07em; text-transform: uppercase; color: var(--cream); }

/* map pins: little boards on a stem, the stem tip on the spot */
.pin { display: flex; flex-direction: column; align-items: center; cursor: pointer; transform-origin: 50% 100%; transition: transform .2s var(--ease); }
.pin .b { display: grid; place-items: center; min-width: 25px; height: 21px; padding: 0 5px; border-radius: 4px; background: var(--green); color: var(--cream); font: 700 11.5px/1 var(--f-text); outline: 1px solid var(--cream); outline-offset: -3px; box-shadow: 0 3px 8px rgba(10, 9, 8, .4); font-variant-numeric: tabular-nums; }
.pin i { display: block; width: 2px; height: 7px; background: var(--cream); box-shadow: 0 3px 8px rgba(10, 9, 8, .4); }
.pin:hover, .pin.hint { transform: scale(1.15); }
.pin.on { transform: scale(1.25); z-index: 2; } .pin.on .b { background: var(--gold); color: var(--ink); outline-color: var(--ink); }
.pin.hide { visibility: hidden; pointer-events: none; }   /* decluttered: a pin that would overlap a more important one waits for a closer zoom */
.spot { display: flex; flex-direction: column; align-items: center; pointer-events: none; }
.spot b, .spot i, .spot u { display: block; } .spot b { padding: 5px 10px; border-radius: 999px; background: var(--ink); color: var(--cream); font-weight: 600; font-size: 13px; white-space: nowrap; box-shadow: var(--lift); }
.spot i { width: 2px; height: 10px; background: var(--ink); }
.spot u { width: 14px; height: 14px; margin-top: -2px; border-radius: 50%; background: var(--gold); border: 2px solid var(--ink); animation: live 1.2s var(--ease) 2; }

/* left dock: places list, place card, about */
.dock { position: fixed; z-index: 7; top: 96px; left: var(--gap); bottom: var(--gap); width: 324px; display: flex; flex-direction: column; border-radius: 16px; overflow: hidden; transition: transform .35s var(--ease), opacity .25s var(--ease); }
.dock.enter { transform: translateX(-16px); opacity: 0; }
.dock-h { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 12px 10px 8px 16px; border-bottom: 1px solid var(--line); }
.dock-h h2 { margin: 0; font: 700 16px/1.2 var(--f-text); }
.dock-h h2 span { display: block; margin-top: 2px; font: 600 12.5px/1.2 var(--f-sign); color: var(--gold); }
.icon-btn { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 10px; color: var(--cream-2); }
.icon-btn:hover { background: var(--ink-3); color: var(--cream); }
.back { display: flex; align-items: center; gap: 6px; height: 30px; padding: 0 10px 0 6px; border-radius: 10px; color: var(--cream-2); font-weight: 600; font-size: 13px; }
.back:hover { background: var(--ink-3); color: var(--cream); }
.dock-body { flex: 1; overflow: auto; padding: 12px 16px 18px; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--ink-3) transparent; }
.dock-body::-webkit-scrollbar { width: 8px; } .dock-body::-webkit-scrollbar-thumb { background: var(--ink-3); border-radius: 999px; }
.dock-body .lead { margin: 0 0 14px; color: var(--cream-2); font-size: 13px; }
.dock-body h3 { margin: 22px 0 8px; font: 700 12px/1.3 var(--f-text); letter-spacing: .08em; text-transform: uppercase; color: var(--cream-2); }
.dock-body h3:first-of-type { margin-top: 4px; }
.dock-body h3 span { margin-left: 6px; letter-spacing: 0; text-transform: none; font: 600 12.5px/1.3 var(--f-sign); color: var(--cream-2); }
.plist { list-style: none; margin: 0; padding: 0; }
.pl { display: flex; align-items: center; gap: 10px; width: 100%; padding: 7px 8px; margin: 0 -8px; border-radius: 10px; text-align: left; }
.pl:hover, .pl:focus-visible { background: var(--ink-3); }
.pl .t { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.pl .t b { font-weight: 600; font-size: 14px; line-height: 1.3; }
.pl .t span { font-size: 12.5px; line-height: 1.35; color: var(--cream-2); }
.pl .area { font-size: 12px; color: var(--cream-2); text-align: right; flex: none; max-width: 96px; }
.card .meta { margin: 10px 2px 12px; font-size: 12.5px; color: var(--cream-2); }
.card .pic { display: block; width: 100%; height: auto; aspect-ratio: 8 / 5; border-radius: 10px; background: var(--ink-2); object-fit: cover; image-rendering: pixelated; }
.card .blurb { margin: 14px 2px 8px; font-size: 14px; line-height: 1.6; color: var(--cream); }
.card .draft { margin: 0 2px 14px; font-size: 12px; color: var(--gold); opacity: .85; }
.coords { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 14px; padding: 10px 12px; border-radius: 10px; background: var(--ink-2); font-size: 13px; color: var(--cream-2); font-variant-numeric: tabular-nums; }
.pillbtn { display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 12px; border-radius: 999px; background: var(--ink-3); color: var(--cream); font-weight: 600; font-size: 13px; }
.pillbtn:hover { background: #4a443d; }
.pillbtn.primary { background: var(--terra); color: #fff8ec; } .pillbtn.primary:hover { background: var(--terra-2); }
.pillbtn .i { width: 16px; height: 16px; }
.acts { display: flex; gap: 8px; margin-top: 12px; }
.dock-f { display: flex; justify-content: space-between; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line); }
.dock-f button { display: flex; align-items: center; gap: 6px; max-width: 48%; height: 32px; padding: 0 10px; border-radius: 10px; color: var(--cream-2); font-weight: 600; font-size: 13px; }
.dock-f button span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dock-f button:hover { background: var(--ink-3); color: var(--cream); }
.about p { margin: 0 0 12px; font-size: 14px; line-height: 1.6; max-width: 62ch; }
.about ul { margin: 0 0 12px; padding-left: 18px; font-size: 13.5px; line-height: 1.6; color: var(--cream-2); }
.about kbd { display: inline-block; min-width: 22px; padding: 1px 6px; border: 1px solid var(--line); border-radius: 5px; font: 600 12px/1.5 var(--f-text); color: var(--cream); text-align: center; }
.keys { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 0 0 12px; font-size: 13.5px; color: var(--cream-2); }

body.dock-open { --dock-w: 352px; }

.credit { position: fixed; z-index: 3; right: calc(var(--gap) + min(204px, 30vh) * 250 / 600 + 8px); bottom: var(--gap);   /* on the bottom edge, left of the locator */ padding: 5px 10px; border-radius: 999px; font-size: 11.5px; color: var(--cream-2); }
.credit a { color: var(--cream); }
.toast { position: fixed; z-index: 9; left: 50%; top: 78px; transform: translate(-50%, -8px); padding: 9px 16px; border-radius: 999px; background: var(--cream); color: var(--ink); font-weight: 600; box-shadow: var(--lift); opacity: 0; pointer-events: none; transition: opacity .25s var(--ease), transform .35s var(--ease); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.hud { position: fixed; z-index: 6; background: var(--chrome); color: var(--cream); border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; box-shadow: var(--lift); }

body.searching .credit, body.searching .mini { display: none; }
@media (max-width: 1180px) {
  .tool-search { display: flex; }
  .search { display: none; position: fixed; top: 66px; right: var(--gap); width: min(352px, calc(100vw - 2 * var(--gap))); }
  body.searching .search { display: flex; }
  .results { position: fixed; top: 118px; right: var(--gap); width: min(352px, calc(100vw - 2 * var(--gap))); }
}
@media (max-width: 1100px) { :root { --nav-w: 0px; } .mini { display: none !important; } .credit { right: var(--gap); } }
@media (max-width: 960px) { .tool span.lbl { display: none; } .tool { min-width: 38px; } }
@media (max-width: 900px) { [data-tool="out"], [data-tool="in"] { display: none !important; } }
@media (max-width: 820px) { [data-tool="full"] { display: none !important; } }
@media (max-width: 720px) {
  :root { --gap: 10px; }
  .logo { padding: 8px 11px 7px; } .logo-ta { font-size: 15px; }
  .presence { height: 28px; font-size: 12px; }
  .topright { left: 0; right: 0; top: auto; bottom: 0; display: block; }
  .search { display: none; position: fixed; top: var(--gap); left: var(--gap); right: var(--gap); width: auto; height: 48px; }
  body.searching .search { display: flex; } body.searching .brand { visibility: hidden; }
  .results { position: fixed; top: 64px; left: var(--gap); right: var(--gap); width: auto; max-height: calc(100vh - 160px); }
  .tools { width: 100%; height: calc(58px + env(safe-area-inset-bottom)); padding: 4px 6px env(safe-area-inset-bottom); border-radius: 16px 16px 0 0; border-width: 1px 0 0; justify-content: space-around; }
  .tool { flex: 1; min-width: 0; } .tool span.lbl { display: block; }
  .tool-search { display: flex; }
  [data-tool="out"], [data-tool="in"], [data-tool="full"], [data-tool="collapse"], .tools .sep { display: none !important; }
  .dock { top: auto; left: 0; right: 0; bottom: calc(57px + env(safe-area-inset-bottom)); width: auto; max-height: 68vh; border-radius: 18px 18px 0 0; }
  .dock.enter { transform: translateY(24px); }
  .dock::before { content: ''; display: block; width: 40px; height: 4px; margin: 8px auto 0; border-radius: 999px; background: var(--ink-3); }
  body.dock-open { --dock-w: 0px; }
  .credit { left: auto; right: var(--gap); top: 52px; bottom: auto; font-size: 11px; padding: 3px 8px; }
  body.searching .credit, body.dock-open .credit { display: none; }
  .toast { top: 60px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }