:root {
  --bg: #0b0f16;
  --panel: rgba(13, 18, 27, 0.82);
  --panel-border: rgba(130, 170, 220, 0.16);
  --text: #dfe7f0;
  --text-dim: #8fa0b5;
  --accent: #f2b950;
  --accent-2: #6fb7ff;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; background: var(--bg); font-family: var(--font); color: var(--text); }
#app { position: fixed; inset: 0; }
#canvas-holder, #canvas-holder canvas { position: absolute; inset: 0; display: block; touch-action: none; }
#labels { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }

/* ---- tower labels ---- */
.tower-label {
  position: absolute; transform: translate(-50%, -100%);
  text-align: center; pointer-events: auto; cursor: pointer;
  transition: opacity .3s; user-select: none; -webkit-user-select: none;
}
.tower-label .tl-name {
  display: block; font-size: 12px; font-weight: 600; letter-spacing: .04em;
  color: var(--text); text-shadow: 0 1px 6px rgba(0,0,0,.9); white-space: nowrap;
}
.tower-label .tl-h { display: block; font-size: 10px; color: var(--accent); font-variant-numeric: tabular-nums; text-shadow: 0 1px 4px rgba(0,0,0,.9); }
.tower-label .tl-rank {
  display: inline-block; font-size: 9px; color: var(--text-dim);
  border: 1px solid rgba(160,190,230,.35); border-radius: 8px; padding: 0 5px; margin-bottom: 2px;
  background: rgba(10,14,22,.55);
}
.tower-label.dim .tl-name, .tower-label.dim .tl-h { opacity: .38; }
.tower-label.selected .tl-name { color: var(--accent); }
.tower-label.hidden-label { opacity: 0; }

.ruler-label {
  position: absolute; transform: translate(0, -50%);
  font-size: 10px; color: #54687f; font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 4px rgba(0,0,0,.9); pointer-events: none;
}

/* ---- top bar ---- */
#topbar {
  position: absolute; top: 0; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: flex-start;
  padding: 14px 18px; pointer-events: none; z-index: 10;
}
#topbar .title-block h1 {
  font-size: 22px; letter-spacing: .34em; font-weight: 800;
  background: linear-gradient(180deg, #fff, #9fb6cf); -webkit-background-clip: text; background-clip: text; color: transparent;
}
#topbar .subtitle { font-size: 11px; color: var(--text-dim); letter-spacing: .08em; margin-top: 2px; }
.modes { display: flex; gap: 6px; pointer-events: auto; }
.mode-btn, .hud-btn, #list-toggle, .detail-actions button, #tour-bar button {
  font-family: var(--font); font-size: 12px; font-weight: 600; letter-spacing: .05em;
  color: var(--text-dim); background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 8px; padding: 8px 14px; cursor: pointer; backdrop-filter: blur(8px);
  transition: color .2s, border-color .2s, background .2s;
}
.mode-btn:hover, .hud-btn:hover, #list-toggle:hover, .detail-actions button:hover { color: var(--text); border-color: rgba(150,190,240,.4); }
.mode-btn.active, .hud-btn.active { color: #0d1117; background: var(--accent); border-color: var(--accent); }

/* ---- ranking list ---- */
#list-toggle { position: absolute; left: 18px; top: 76px; z-index: 11; display: none; }
#list {
  position: absolute; left: 18px; top: 76px; bottom: 18px; width: 235px;
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: 12px;
  backdrop-filter: blur(10px); padding: 14px 12px; overflow-y: auto; z-index: 9;
}
#list h2 { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 10px; }
#list ol { list-style: none; }
#tower-list li {
  display: flex; align-items: baseline; gap: 8px; padding: 6px 8px; border-radius: 7px;
  cursor: pointer; transition: background .15s; font-size: 12.5px;
}
#tower-list li:hover { background: rgba(120,160,220,.12); }
#tower-list li.selected { background: rgba(242,185,80,.16); }
#tower-list li.selected .li-name { color: var(--accent); }
#tower-list .li-rank { color: var(--text-dim); font-size: 10.5px; width: 18px; text-align: right; flex: none; font-variant-numeric: tabular-nums; }
#tower-list .li-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#tower-list .li-h { color: var(--text-dim); font-size: 10.5px; font-variant-numeric: tabular-nums; flex: none; }
.list-note { font-size: 10px; color: #5c6d84; margin-top: 10px; line-height: 1.5; }

/* ---- detail panel ---- */
#detail {
  position: absolute; right: 18px; top: 76px; width: 320px; max-height: calc(100% - 160px);
  overflow-y: auto; background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 12px; backdrop-filter: blur(12px); padding: 18px; z-index: 10;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), opacity .3s;
}
#detail.hidden { transform: translateX(30px); opacity: 0; pointer-events: none; }
#detail-close {
  position: absolute; top: 10px; right: 12px; background: none; border: none;
  color: var(--text-dim); font-size: 15px; cursor: pointer;
}
#detail-close:hover { color: var(--text); }
.detail-rank { font-size: 10px; letter-spacing: .22em; color: var(--accent); text-transform: uppercase; margin-bottom: 4px; }
#detail h2 { font-size: 21px; letter-spacing: .02em; }
.detail-loc { font-size: 12px; color: var(--text-dim); margin: 3px 0 12px; }
.stats { display: flex; gap: 8px; margin-bottom: 12px; }
.stat {
  flex: 1; background: rgba(120,160,220,.08); border: 1px solid var(--panel-border);
  border-radius: 8px; padding: 8px 6px; text-align: center;
}
.stat-value { display: block; font-size: 16px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat-label { display: block; font-size: 9.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); margin-top: 2px; }
.detail-arch { font-size: 11.5px; color: var(--accent-2); margin-bottom: 8px; }
.detail-blurb { font-size: 12.5px; line-height: 1.62; color: #c3cfdd; }
.detail-fact {
  font-size: 11.5px; line-height: 1.55; color: var(--accent);
  border-left: 2px solid var(--accent); padding-left: 10px; margin-top: 12px;
}
.detail-actions { display: flex; gap: 8px; margin-top: 14px; }
.detail-actions button { flex: 1; font-size: 11px; padding: 8px 6px; }

/* ---- tour bar ---- */
#tour-bar {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 10px; z-index: 10;
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: 30px;
  padding: 8px 14px; backdrop-filter: blur(10px);
  transition: opacity .3s, transform .3s;
}
#tour-bar.hidden, #compare-bar.hidden { opacity: 0; pointer-events: none; transform: translateX(-50%) translateY(14px); }
#tour-bar button { padding: 6px 12px; font-size: 14px; border-radius: 20px; }
#tour-progress { font-size: 12px; color: var(--text-dim); font-variant-numeric: tabular-nums; min-width: 90px; text-align: center; }

/* ---- compare bar ---- */
#compare-bar {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 10px; z-index: 10;
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: 12px;
  padding: 10px 14px; backdrop-filter: blur(10px);
  transition: opacity .3s, transform .3s; max-width: calc(100vw - 24px); flex-wrap: wrap; justify-content: center;
}
#compare-bar select {
  font-family: var(--font); font-size: 12px; color: var(--text);
  background: rgba(120,160,220,.1); border: 1px solid var(--panel-border);
  border-radius: 7px; padding: 7px 8px; max-width: 170px;
}
#compare-bar .vs { font-size: 11px; color: var(--accent); font-weight: 700; letter-spacing: .1em; }
#compare-verdict { font-size: 11.5px; color: var(--accent); width: 100%; text-align: center; font-variant-numeric: tabular-nums; }

/* ---- hud ---- */
#hud { position: absolute; right: 18px; bottom: 22px; display: flex; gap: 6px; z-index: 9; }
#hint {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  font-size: 11px; color: #5c6d84; letter-spacing: .06em; z-index: 5;
  transition: opacity 1s; pointer-events: none; text-shadow: 0 1px 4px rgba(0,0,0,.8);
}

/* ---- loading ---- */
#loading {
  position: absolute; inset: 0; z-index: 100; background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity .8s;
}
#loading.done { opacity: 0; pointer-events: none; }
.load-inner { text-align: center; }
.load-inner h1 { font-size: 30px; letter-spacing: .4em; color: var(--text); margin-bottom: 8px; }
.load-inner p { font-size: 12px; color: var(--text-dim); letter-spacing: .1em; margin-bottom: 18px; }
.load-bar { width: 220px; height: 3px; background: rgba(130,170,220,.15); border-radius: 2px; margin: 0 auto; overflow: hidden; }
#load-fill { width: 0%; height: 100%; background: var(--accent); transition: width .2s; }

/* ---- mobile ---- */
@media (max-width: 760px) {
  #topbar { flex-direction: column; gap: 8px; align-items: stretch; }
  #topbar .title-block h1 { font-size: 17px; }
  .modes { justify-content: flex-start; }
  #list-toggle { display: block; top: 118px; left: 12px; padding: 7px 12px; }
  #list { top: auto; bottom: 0; left: 0; right: 0; width: auto; max-height: 46%;
    border-radius: 14px 14px 0 0; transform: translateY(calc(100% + 2px)); transition: transform .3s; }
  #list.open { transform: translateY(0); }
  #detail {
    left: 0; right: 0; top: auto; bottom: 0; width: auto; max-height: 52%;
    border-radius: 14px 14px 0 0;
  }
  #detail.hidden { transform: translateY(30px); }
  #hud { bottom: auto; top: 118px; right: 12px; flex-direction: column; }
  #hud .hud-btn { padding: 7px 12px; }
  #hint { display: none; }
  #tour-bar { bottom: 12px; }
  #compare-bar { bottom: 12px; }
  .tower-label .tl-name { font-size: 10px; }
  .tower-label .tl-h { font-size: 9px; }
}