/* FIRST LIGHT — dawn editorial UI over a WebGL skyline */
@font-face {
  font-family: 'Fraunces';
  src: url('../fonts/fraunces-var.woff2') format('woff2');
  font-weight: 100 900; font-display: swap;
}
@font-face {
  font-family: 'Space Grotesk';
  src: url('../fonts/spacegrotesk-var.woff2') format('woff2');
  font-weight: 300 700; font-display: swap;
}

:root {
  --ink: #eef0f8;
  --dim: #a8aec4;
  --faint: #6d7490;
  --amber: #ffbe78;
  --amber2: #ffd9a3;
  --rose: #e88ba0;
  --glass: rgba(16, 18, 34, 0.72);
  --glass2: rgba(20, 23, 42, 0.55);
  --line: rgba(255, 200, 150, 0.16);
  --serif: 'Fraunces', 'Georgia', serif;
  --sans: 'Space Grotesk', 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: var(--sans);
  background: #0a0c1a;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
button:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
kbd {
  font: 600 10px/1 var(--sans); padding: 3px 5px; margin: 0 1px;
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px;
  background: rgba(255,255,255,0.06); color: var(--amber2);
}

#gl { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
#vignette {
  position: fixed; inset: 0; pointer-events: none; z-index: 2;
  background:
    radial-gradient(120% 90% at 50% 108%, rgba(6,6,14,0.5) 0%, transparent 55%),
    radial-gradient(130% 100% at 50% -20%, rgba(6,6,16,0.55) 0%, transparent 60%);
}

/* ------------------------------------------------------- projected labels */
#labels { position: fixed; inset: 0; overflow: hidden; z-index: 3; pointer-events: none; }
.tl {
  display: flex; align-items: baseline; gap: 7px;
  padding: 5px 10px 6px; border-radius: 8px;
  background: rgba(12, 14, 28, 0.55);
  border: 1px solid rgba(255, 205, 155, 0.14);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  white-space: nowrap; cursor: pointer; pointer-events: auto;
  transform-origin: 50% 100%;
  transition: opacity .25s;
}
.tl::after {
  content: ''; position: absolute; left: 50%; bottom: -5px; width: 5px; height: 5px;
  background: var(--amber); border-radius: 50%; transform: translateX(-50%);
  box-shadow: 0 0 8px rgba(255,190,120,0.9);
}
.tl-rk { font: 600 9px/1 var(--sans); color: var(--amber); letter-spacing: .12em; }
.tl-nm { font: 500 12px/1.1 var(--serif); color: var(--ink); }
.tl-ht { font: 500 10px/1 var(--sans); color: var(--dim); font-variant-numeric: tabular-nums; }
.tl.sel, .tl.cmp {
  background: rgba(46, 32, 20, 0.8);
  border-color: var(--amber);
  box-shadow: 0 0 22px rgba(255, 170, 90, 0.25);
}
.tl.sel .tl-nm, .tl.cmp .tl-nm { color: var(--amber2); }
.rl {
  position: absolute; font: 500 10px/1 var(--sans); color: var(--dim);
  padding: 3px 7px; border-radius: 6px; background: rgba(12,14,28,.5);
  border: 1px solid rgba(255,255,255,.08); white-space: nowrap; pointer-events: none;
  transform: translate(-50%, -130%);
}

/* ---------------------------------------------------------------- top bar */
#topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: center; gap: 18px;
  padding: 14px 20px 12px;
  background: linear-gradient(180deg, rgba(8,9,20,0.85), rgba(8,9,20,0.35) 70%, transparent);
}
.brand h1 {
  font: 600 21px/1 var(--serif); letter-spacing: .16em; color: var(--amber2);
  text-shadow: 0 0 24px rgba(255,180,110,.35);
}
.brand p { font: 400 10.5px/1.4 var(--sans); color: var(--dim); letter-spacing: .08em; margin-top: 3px; }
.tabs { display: flex; gap: 4px; margin-left: 8px; }
.tab {
  font: 500 12px/1 var(--sans); letter-spacing: .05em; color: var(--dim);
  padding: 8px 14px; border-radius: 99px; border: 1px solid transparent;
  transition: all .2s;
}
.tab:hover { color: var(--ink); border-color: var(--line); }
.tab.on { color: #22160a; background: linear-gradient(160deg, var(--amber2), var(--amber)); font-weight: 600; }
.top-actions { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.tool {
  font: 500 11px/1 var(--sans); letter-spacing: .06em; color: var(--dim);
  padding: 8px 12px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--glass2); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: all .2s;
}
.tool:hover { color: var(--ink); border-color: rgba(255,200,150,.4); }
.tool.on { color: var(--amber2); border-color: rgba(255,190,120,.5); }
.tool.icon { font-size: 14px; padding: 7px 11px; }

/* ----------------------------------------------------------------- drawer */
#drawer {
  position: fixed; top: 0; right: -420px; width: min(400px, 92vw); height: 100%;
  background: var(--glass); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-left: 1px solid var(--line); z-index: 20;
  transition: right .35s cubic-bezier(.3,.9,.3,1);
  display: flex; flex-direction: column; padding: 20px 0 12px;
}
#drawer.open { right: 0; }
.drawer-head { padding: 0 20px 12px; border-bottom: 1px solid var(--line); position: relative; }
.drawer-head h2 { font: 500 18px/1 var(--serif); color: var(--amber2); letter-spacing: .06em; }
.drawer-head p { font: 400 10px/1.5 var(--sans); color: var(--faint); margin-top: 4px; letter-spacing: .1em; }
.x {
  position: absolute; top: 0; right: 16px; font-size: 22px; color: var(--faint);
  width: 32px; height: 32px; border-radius: 8px;
}
.x:hover { color: var(--ink); background: rgba(255,255,255,.07); }
#towerlist { overflow-y: auto; flex: 1; list-style: none; padding: 8px 12px; }
#towerlist li {
  display: grid; grid-template-columns: 30px 1fr auto; gap: 10px; align-items: baseline;
  padding: 9px 10px; border-radius: 10px; cursor: pointer;
  border: 1px solid transparent;
}
#towerlist li:hover { background: rgba(255,255,255,.05); border-color: var(--line); }
#towerlist li.sel { background: rgba(255,170,90,.12); border-color: rgba(255,190,120,.4); }
#towerlist .r { font: 600 10px/1 var(--sans); color: var(--amber); letter-spacing: .1em; }
#towerlist .n { font: 500 13px/1.2 var(--serif); color: var(--ink); }
#towerlist .n small { display: block; font: 400 9.5px/1.4 var(--sans); color: var(--faint); }
#towerlist .h { font: 500 11px/1 var(--sans); color: var(--dim); font-variant-numeric: tabular-nums; }
.method {
  font: 400 9.5px/1.6 var(--sans); color: var(--faint); padding: 10px 20px 4px;
  border-top: 1px solid var(--line); letter-spacing: .02em;
}

/* ------------------------------------------------------------------ panel */
#panel {
  position: fixed; top: 70px; right: 16px; width: min(348px, calc(100vw - 32px));
  max-height: calc(100vh - 96px); overflow-y: auto;
  background: var(--glass); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--line); border-radius: 18px; z-index: 15;
  padding: 22px 22px 16px;
  transform: translateX(30px); opacity: 0; pointer-events: none;
  transition: transform .35s cubic-bezier(.3,.9,.3,1), opacity .3s;
}
#panel.open { transform: none; opacity: 1; pointer-events: auto; }
.p-rank {
  font: 600 10px/1 var(--sans); color: var(--amber); letter-spacing: .22em;
}
.p-rank::after { content: ''; display: block; width: 34px; height: 1px; background: var(--amber); margin-top: 8px; opacity: .6; }
#panel h2 { font: 560 24px/1.15 var(--serif); margin-top: 12px; color: var(--ink); }
.p-loc { font: 400 11px/1.4 var(--sans); color: var(--dim); margin-top: 4px; letter-spacing: .06em; }
.p-height { display: flex; align-items: baseline; gap: 6px; margin: 14px 0 4px; }
.p-height #p-hm { font: 560 40px/1 var(--serif); color: var(--amber2); font-variant-numeric: tabular-nums; }
.p-height .unit { font: 500 14px/1 var(--sans); color: var(--amber); }
.p-height .ft { font: 400 12px/1 var(--sans); color: var(--faint); margin-left: 4px; }
.p-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; margin: 14px 0;
  padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.p-stats div { font: 400 10px/1.5 var(--sans); color: var(--faint); letter-spacing: .05em; }
.p-stats b { display: block; font: 500 12.5px/1.3 var(--sans); color: var(--ink); letter-spacing: 0; margin-top: 2px; }
.p-story { font: 400 12.5px/1.65 var(--sans); color: #cfd4e4; }
.p-sig { list-style: none; margin-top: 12px; }
.p-sig li {
  font: 400 11px/1.5 var(--sans); color: var(--dim); padding: 5px 0 5px 16px; position: relative;
}
.p-sig li::before { content: '—'; position: absolute; left: 0; color: var(--amber); }
.p-actions { display: flex; gap: 6px; margin-top: 16px; flex-wrap: wrap; }
.act {
  font: 600 11px/1 var(--sans); letter-spacing: .04em;
  padding: 10px 13px; border-radius: 9px;
  background: linear-gradient(160deg, var(--amber2), var(--amber)); color: #241708;
}
.act.ghosted { background: none; border: 1px solid var(--line); color: var(--dim); }
.act:hover { filter: brightness(1.1); }
.act.ghosted:hover { color: var(--ink); border-color: rgba(255,200,150,.4); }
.p-nav { display: flex; justify-content: space-between; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.p-nav button { font: 500 11px/1 var(--sans); color: var(--faint); padding: 6px 4px; }
.p-nav button:hover { color: var(--amber2); }

/* ---------------------------------------------------------------- tourbar */
#tourbar {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  width: min(560px, calc(100vw - 28px)); z-index: 14;
  background: var(--glass); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line); border-radius: 16px; padding: 14px 18px 12px;
}
.t-cap { display: flex; gap: 14px; align-items: baseline; }
.t-rank { font: 600 10px/1 var(--sans); color: var(--amber); letter-spacing: .16em; white-space: nowrap; }
.t-body h3 { font: 560 18px/1.2 var(--serif); color: var(--ink); }
.t-body p { font: 400 11px/1.5 var(--sans); color: var(--dim); margin-top: 2px; }
.t-ctl { position: absolute; right: 12px; top: 12px; display: flex; gap: 4px; }
.t-ctl button {
  width: 30px; height: 30px; border-radius: 8px; color: var(--dim); font-size: 14px;
  border: 1px solid transparent;
}
.t-ctl button:hover { color: var(--ink); background: rgba(255,255,255,.07); border-color: var(--line); }
.t-progress { height: 2px; background: rgba(255,255,255,.08); border-radius: 2px; margin-top: 12px; }
#t-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--amber), var(--rose)); border-radius: 2px; transition: width .4s; }

/* ------------------------------------------------------------- comparebar */
#comparebar {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  width: min(600px, calc(100vw - 28px)); z-index: 14;
  background: var(--glass); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line); border-radius: 16px; padding: 14px 18px;
}
.c-pair { display: grid; grid-template-columns: 1fr auto 1fr; gap: 10px; align-items: center; }
.c-t { text-align: center; }
.c-t b { display: block; font: 560 15px/1.2 var(--serif); color: var(--ink); }
.c-t span { font: 500 11px/1.3 var(--sans); color: var(--amber); font-variant-numeric: tabular-nums; }
.c-t.taller b { color: var(--amber2); }
.c-vs { font: 500 10px/1 var(--sans); color: var(--faint); letter-spacing: .15em; }
.c-delta { font: 400 11.5px/1.55 var(--sans); color: var(--dim); text-align: center; margin-top: 10px; }
.c-delta b { color: var(--amber2); font-weight: 600; }
.c-ctl { display: flex; justify-content: center; gap: 6px; margin-top: 10px; }

/* -------------------------------------------------------------- misc bars */
#refbar {
  position: fixed; left: 20px; bottom: 22px; z-index: 12;
  font: 400 10.5px/1.5 var(--sans); color: var(--dim);
  background: var(--glass2); border: 1px solid var(--line); border-radius: 10px;
  padding: 8px 12px; max-width: 280px; backdrop-filter: blur(8px);
}
#ascend {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); z-index: 14;
  display: flex; align-items: baseline; gap: 12px;
  background: var(--glass); border: 1px solid var(--line); border-radius: 14px;
  padding: 12px 18px; backdrop-filter: blur(12px);
}
.a-h #a-m { font: 560 34px/1 var(--serif); color: var(--amber2); font-variant-numeric: tabular-nums; }
.a-h .unit { font: 500 13px/1 var(--sans); color: var(--amber); margin-left: 2px; }
.a-f { font: 400 11px/1 var(--sans); color: var(--dim); }
#ascend button { font: 600 10px/1 var(--sans); color: var(--faint); border: 1px solid var(--line); border-radius: 7px; padding: 7px 10px; }
#ascend button:hover { color: var(--ink); }

#legend {
  position: fixed; left: 20px; bottom: 20px; z-index: 9;
  display: flex; flex-direction: column; gap: 4px; pointer-events: none;
}
.lg-bar { font: 500 10px/1 var(--sans); color: var(--faint); display: flex; align-items: center; gap: 7px; }
.lg-bar i { display: block; height: 1px; background: var(--amber); position: relative; }
.lg-bar i::before, .lg-bar i::after {
  content: ''; position: absolute; top: -3px; width: 1px; height: 7px; background: var(--amber);
}
.lg-bar i::after { right: 0; }
.lg-note { font: 400 9.5px/1.4 var(--sans); color: var(--faint); letter-spacing: .04em; }
#refbar:not([hidden]) ~ #legend, body.panel-open #legend { opacity: 0; }

#toast {
  position: fixed; top: 74px; left: 50%; transform: translateX(-50%); z-index: 30;
  font: 500 12px/1.4 var(--sans); color: var(--amber2);
  background: rgba(30,22,12,.85); border: 1px solid rgba(255,190,120,.4); border-radius: 10px;
  padding: 10px 16px; backdrop-filter: blur(8px);
}

/* ------------------------------------------------------------------- help */
#helpov {
  position: fixed; inset: 0; z-index: 40; display: grid; place-items: center;
  background: rgba(6,7,16,.6); backdrop-filter: blur(6px);
}
.help-card {
  position: relative; width: min(460px, 92vw); max-height: 88vh; overflow-y: auto;
  background: var(--glass); border: 1px solid var(--line); border-radius: 18px; padding: 26px 28px;
}
.help-card h2 { font: 560 20px/1 var(--serif); color: var(--amber2); margin-bottom: 16px; }
.help-grid { display: grid; grid-template-columns: auto 1fr; gap: 9px 18px; align-items: center; }
.help-grid span { font: 400 11px/1.4 var(--sans); color: var(--faint); }
.help-grid b { font: 500 11.5px/1.4 var(--sans); color: var(--ink); }

/* ---------------------------------------------------------------- loading */
#loading {
  position: fixed; inset: 0; z-index: 60; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px;
  background: linear-gradient(180deg, #0a0c1e 0%, #191230 55%, #3c2340 80%, #6b3a44 100%);
  transition: opacity .8s; 
}
#loading.done { opacity: 0; pointer-events: none; }
.ld-sky svg { width: min(420px, 80vw); }
#ld-sil { fill: none; stroke: var(--amber2); stroke-width: 1.4;
  stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: draw 2.4s ease forwards .2s; }
#ld-ground { stroke: rgba(255,210,160,.5); stroke-width: 1; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.ld-title { font: 600 26px/1 var(--serif); letter-spacing: .3em; color: var(--amber2); margin-top: 8px; }
.ld-sub { font: 400 11px/1.4 var(--sans); color: var(--dim); letter-spacing: .12em; }
.ld-bar { width: min(280px, 60vw); height: 2px; background: rgba(255,255,255,.12); border-radius: 2px; margin-top: 18px; overflow: hidden; }
#ld-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--amber), var(--rose)); transition: width .3s; }
.ld-pct { font: 500 10px/1 var(--sans); color: var(--faint); letter-spacing: .2em; }

#nogl { position: fixed; inset: 0; z-index: 70; display: grid; place-items: center; background: #0b0d1c; text-align: center; padding: 24px; }
#nogl h1 { font: 560 24px/1.3 var(--serif); color: var(--amber2); }
#nogl p { font: 400 13px/1.6 var(--sans); color: var(--dim); margin-top: 10px; max-width: 420px; }

/* ---------------------------------------------------------------- mobile */
@media (max-width: 720px) {
  #topbar { padding: 10px 12px 8px; gap: 8px; flex-wrap: wrap; }
  .brand h1 { font-size: 16px; }
  .brand p { display: none; }
  .tabs { order: 3; width: 100%; margin: 6px 0 0; }
  .tab { flex: 1; text-align: center; padding: 9px 6px; font-size: 11px; }
  .tool { padding: 7px 9px; font-size: 10px; }
  #panel {
    top: auto; bottom: 0; right: 0; left: 0; width: 100%;
    max-height: 62vh; border-radius: 20px 20px 0 0;
    transform: translateY(40px);
  }
  #panel.open { transform: none; }
  #drawer { width: 100vw; right: -100vw; }
  .t-cap { padding-right: 120px; }
  #legend { display: none; }
  .tl-nm { font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  #ld-sil { animation-duration: .1s; }
}