:root {
  --bg: #06121e;
  --ink: #eaf4fb;
  --ink-dim: #8fb3c7;
  --accent: #35d0ba;
  --accent2: #ffb454;
  --panel: #0b1f30f2;
  --card: #10293d;
  --line: #1d3a52;
  font-size: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; background: var(--bg); color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", system-ui, sans-serif; }

canvas#gl, canvas#overlay { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; }
canvas#overlay { pointer-events: none; }

#topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding: .7rem 1.2rem;
  background: linear-gradient(180deg, #06121ef0 55%, transparent);
}
#topbar h1 { font-size: 1.15rem; letter-spacing: .35em; font-weight: 800; color: var(--ink); }
#topbar h1 span { display: block; font-size: .55rem; letter-spacing: .5em; color: var(--accent); font-weight: 600; }

#modes { display: flex; gap: .3rem; }
#modes button {
  background: transparent; color: var(--ink-dim); border: 1px solid var(--line);
  padding: .35rem .9rem; border-radius: 999px; cursor: pointer; font-size: .8rem;
  transition: all .2s;
}
#modes button.active, #modes button:hover { color: #04141f; background: var(--accent); border-color: var(--accent); }

#controls { display: flex; gap: .5rem; flex: 1; min-width: 260px; }
#controls input, #controls select {
  background: #0a1c2c; color: var(--ink); border: 1px solid var(--line);
  border-radius: 8px; padding: .45rem .7rem; font-size: .85rem;
}
#controls input { flex: 1; min-width: 120px; }
#controls input:focus, #controls select:focus { outline: 1px solid var(--accent); }

#stats { font-size: .72rem; color: var(--ink-dim); text-align: right; line-height: 1.5; min-width: 130px; }
#stats b { color: var(--accent2); }

#hint { position: fixed; bottom: .8rem; left: 50%; transform: translateX(-50%);
  font-size: .7rem; color: var(--ink-dim); letter-spacing: .15em; z-index: 5;
  background: #06121eb0; padding: .3rem .9rem; border-radius: 999px; }

/* detail panel */
#panel {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100vw);
  background: var(--panel); backdrop-filter: blur(14px);
  border-left: 1px solid var(--line); z-index: 20;
  transform: translateX(102%); transition: transform .35s cubic-bezier(.2,.9,.25,1);
  overflow-y: auto; overscroll-behavior: contain;
}
#panel.open { transform: translateX(0); }
#panel-close {
  position: sticky; top: .6rem; margin-left: .6rem; z-index: 2;
  background: #0a1c2c; color: var(--ink); border: 1px solid var(--line);
  width: 2.2rem; height: 2.2rem; border-radius: 50%; font-size: 1.2rem; cursor: pointer;
}
#panel-body { padding: 0 1.4rem 3rem; }
#panel .hero { margin: .4rem -1.4rem 1rem; position: relative; }
#panel .hero img { width: 100%; height: 300px; object-fit: cover; display: block; }
#panel .hero .badge {
  position: absolute; bottom: .8rem; left: 1.4rem; background: #04141fd0;
  padding: .3rem .8rem; border-radius: 6px; font-size: .75rem; color: var(--accent);
}
#panel h2 { font-size: 1.5rem; margin: .2rem 0 .3rem; }
#panel .sub { color: var(--ink-dim); font-size: .85rem; margin-bottom: 1rem; }
#panel .quickstats { display: flex; gap: 1.2rem; margin: .8rem 0 1.2rem; }
#panel .quickstats div { text-align: center; }
#panel .quickstats b { display: block; font-size: 1.4rem; color: var(--accent2); }
#panel .quickstats span { font-size: .65rem; letter-spacing: .15em; color: var(--ink-dim); text-transform: uppercase; }

#panel .thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: .4rem; margin: 1rem 0; }
#panel .thumbs img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 6px; cursor: pointer;
  transition: transform .15s; }
#panel .thumbs img:hover { transform: scale(1.05); }
#panel .thumbs .more { display: flex; align-items: center; justify-content: center;
  background: var(--card); border-radius: 6px; font-size: .8rem; color: var(--accent); cursor: pointer; }

#panel section { margin: 1.4rem 0; }
#panel h3 { font-size: .8rem; letter-spacing: .25em; text-transform: uppercase; color: var(--accent);
  margin-bottom: .6rem; border-bottom: 1px solid var(--line); padding-bottom: .35rem; }
#panel .desc { font-size: .88rem; line-height: 1.65; color: #c9dcea; white-space: pre-line; }
#panel .desc.clamped { max-height: 9.9rem; overflow: hidden; -webkit-mask-image: linear-gradient(#000 60%, transparent); mask-image: linear-gradient(#000 60%, transparent); }
#panel .desc-toggle { background: none; border: none; color: var(--accent); cursor: pointer; font-size: .8rem; padding: .3rem 0; }

#panel .chips { display: flex; flex-wrap: wrap; gap: .35rem; }
#panel .chips span { background: var(--card); border: 1px solid var(--line);
  font-size: .72rem; padding: .25rem .6rem; border-radius: 999px; color: #b8d4e6; }

#panel .beds-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
#panel .beds-table td { padding: .35rem .2rem; border-bottom: 1px solid var(--line); color: #c9dcea; }
#panel .beds-table td:last-child { text-align: right; color: var(--accent2); }

.math-block .math-row { margin: .9rem 0; padding: .7rem .9rem; background: var(--card);
  border-radius: 10px; border: 1px solid var(--line); }
math { color: var(--accent2); font-size: 1.05rem; }
.math-cap { font-size: .7rem; color: var(--ink-dim); margin-top: .4rem; letter-spacing: .05em; }

#panel .review { border-left: 2px solid var(--accent); padding: .4rem .8rem; margin: .7rem 0;
  font-size: .82rem; color: #c9dcea; }
#panel .review .who { color: var(--accent2); font-size: .72rem; margin-top: .3rem; }
#panel .stars { color: var(--accent2); letter-spacing: .1em; }

#avail-canvas { width: 100%; border-radius: 10px; background: var(--card); }

#panel .tour-link { display: inline-block; margin: .3rem .5rem .3rem 0; color: #04141f;
  background: var(--accent); padding: .45rem .9rem; border-radius: 8px; font-size: .8rem;
  text-decoration: none; font-weight: 600; }

/* lightbox */
#lightbox { position: fixed; inset: 0; z-index: 40; background: #020a12ee; display: none;
  align-items: center; justify-content: center; }
#lightbox.open { display: flex; }
#lightbox img { max-width: 94vw; max-height: 92vh; border-radius: 8px; }
#lightbox button { position: absolute; background: #0a1c2cd0; color: var(--ink);
  border: 1px solid var(--line); border-radius: 50%; width: 2.6rem; height: 2.6rem;
  font-size: 1.4rem; cursor: pointer; }
#lb-prev { left: 1rem; top: 50%; }
#lb-next { right: 1rem; top: 50%; }
#lb-close { right: 1rem; top: 1rem; }

@media (max-width: 900px) {
  #topbar { gap: .5rem; padding: .5rem .8rem; }
  #topbar h1 { font-size: .95rem; letter-spacing: .22em; }
  #stats { display: none; }
  #hint { display: none; }
}
@media (max-width: 600px) {
  #controls { min-width: 0; width: 100%; }
  #modes button { padding: .3rem .7rem; font-size: .72rem; }
  #panel .thumbs { grid-template-columns: repeat(3, 1fr); }
  #panel .hero img { height: 220px; }
}
#panel .sub .maplink { color: var(--accent); text-decoration: none; }

/* street map UI */
#map3d-btn { position: fixed; right: 1rem; bottom: 2.6rem; z-index: 8;
  background: var(--accent); color: #04141f; border: none; border-radius: 999px;
  padding: .55rem 1.1rem; font-weight: 700; font-size: .8rem; cursor: pointer;
  box-shadow: 0 4px 18px #04141f88; }
#map3d-btn[aria-pressed="true"] { background: var(--accent2); }

#map-tooltip { position: fixed; z-index: 15; width: 240px; pointer-events: none;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: .5rem; font-size: .75rem; color: #c9dcea; display: flex; gap: .5rem;
  box-shadow: 0 6px 24px #03101ccc; }
#map-tooltip img { width: 64px; height: 48px; object-fit: cover; border-radius: 6px; flex: none; }
#map-tooltip b { color: var(--ink); font-size: .8rem; }
#map-tooltip span { color: var(--ink-dim); }

#map-card { position: fixed; left: 1rem; bottom: 1rem; z-index: 16; width: min(320px, calc(100vw - 2rem));
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 0 0 .9rem; overflow: hidden; box-shadow: 0 10px 34px #03101cdd; }
#map-card .mc-hero { width: 100%; height: 140px; object-fit: cover; display: block; }
#map-card h3 { font-size: 1.05rem; margin: .6rem .9rem .1rem; color: var(--ink); }
#map-card .mc-addr { margin: 0 .9rem; font-size: .78rem; color: var(--accent); }
#map-card .mc-stats { margin: .25rem .9rem; font-size: .78rem; color: #c9dcea; }
#map-card .mc-parcel { margin: .5rem .9rem; font-size: .74rem; color: var(--accent2);
  background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: .45rem .6rem; }
#map-card .mc-parcel span { color: var(--ink-dim); }
#map-card .mc-actions { display: flex; gap: .5rem; margin: .6rem .9rem 0; }
#map-card .mc-actions button { flex: 1; border: none; border-radius: 8px; padding: .5rem .4rem;
  font-size: .76rem; font-weight: 700; cursor: pointer; }
#map-card .mc-details { background: var(--accent); color: #04141f; }
#map-card .mc-3d { background: var(--card); color: var(--accent); border: 1px solid var(--line) !important; }
#map-card .mc-close { position: absolute; top: .5rem; right: .5rem; width: 1.8rem; height: 1.8rem;
  border-radius: 50%; border: none; background: #04141fd0; color: var(--ink); cursor: pointer; font-size: 1rem; }