:root {
  color-scheme: dark;
  --page: #000000;
  --surface: #181818;
  --raised: #1f1f1f;
  --hover: #272727;
  --ring: rgba(255, 255, 255, 0.08);
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;

  /* categorical slots, dark steps (validated on #181818) */
  --s1: #3987e5; /* Binance */
  --s2: #d95926; /* Bybit */
  --s3: #199e70; /* OKX */
  --s4: #c98500; /* Bitget */
  --s5: #d55181; /* Hyperliquid */
  --s6: #008300; /* Gate */
  --s7: #9085e9; /* Deribit */
  --s8: #e66767; /* Toobit */

  /* diverging pair for bid / ask */
  --bid: #3987e5;
  --ask: #e66767;
  --up: #0ca30c;
  --down: #e66767;
  --long: #e66767;  /* long liquidated = forced sell */
  --short: #3987e5; /* short liquidated = forced buy */

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --sans: "Poppins", "Pretendard Variable", Pretendard, system-ui, sans-serif;
  --mono: var(--sans);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 20px;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}
h1, h2 { text-wrap: balance; margin: 0; font-weight: 600; }
p, li { text-wrap: pretty; }

.skip {
  position: absolute; left: 16px; top: -48px;
  background: var(--ink); color: var(--page);
  padding: 8px 12px; border-radius: 8px; z-index: 10;
}
.skip:focus { top: 16px; }

/* top bar */
.top {
  position: sticky; top: 12px; z-index: 5;
  margin: 12px auto 0; width: fit-content; max-width: calc(100% - 32px);
  display: flex; align-items: center; gap: 24px;
  padding: 8px 8px 8px 16px;
  background: rgba(24, 24, 24, 0.72);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--ring); border-radius: 9999px;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; white-space: nowrap; }
.brand-mark {
  width: 16px; height: 16px; border-radius: 4px;
  background: conic-gradient(var(--s1) 0 25%, var(--s2) 0 50%, var(--s3) 0 75%, var(--s5) 0);
}
.status {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 12px; border-radius: 9999px; background: var(--raised);
  color: var(--ink-2); font-size: 12px; line-height: 16px; white-space: nowrap;
}
.dot { width: 8px; height: 8px; border-radius: 9999px; background: var(--muted); }
.status.live .dot { background: var(--up); animation: pulse 2s var(--ease) infinite; }
.status.warn .dot { background: #fab219; }
@keyframes pulse { 50% { opacity: 0.35; } }

main { max-width: 1280px; margin: 0 auto; padding: 0 16px; }

.intro { padding: 48px 0 32px; }
.intro h1 {
  font-size: 30px; line-height: 36px; max-width: 680px;
  background: linear-gradient(90deg, #ffffff, #9b9b9b);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.intro p { margin: 12px 0 0; max-width: 680px; color: var(--ink-2); font-size: 16px; line-height: 24px; }

/* tiles */
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 24px; }
.tile {
  background: var(--surface); border: 1px solid var(--ring); border-radius: 16px;
  padding: 16px;
}
.tile .k { color: var(--muted); font-size: 12px; line-height: 16px; }
.tile .v { font-size: 30px; line-height: 36px; font-weight: 600; margin-top: 8px; letter-spacing: -0.01em; }
.tile .s { color: var(--ink-2); font-size: 12px; line-height: 16px; margin-top: 4px; font-family: var(--mono); }

/* panels */
.panel {
  background: var(--surface); border: 1px solid var(--ring); border-radius: 16px;
  padding: 16px; margin-bottom: 24px;
}
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.panel-head h2 { font-size: 18px; line-height: 28px; }
.hint { margin: 0; color: var(--muted); font-size: 12px; line-height: 16px; }

/* table */
.table-wrap { overflow-x: auto; margin: 0 -16px; padding: 0 16px; }
.grid { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; min-width: 1240px; }
.grid th {
  text-align: right; font-weight: 500; color: var(--muted);
  font-size: 12px; line-height: 16px; padding: 8px 12px; white-space: nowrap;
  border-bottom: 1px solid var(--grid); cursor: pointer; user-select: none;
  transition: color 300ms var(--ease);
}
.grid th:hover { color: var(--ink); }
.grid th:focus-visible { outline: 2px solid var(--s1); outline-offset: -2px; border-radius: 4px; }
.grid th.sorted { color: var(--ink); }
.grid th.sorted::after { content: " ↓"; }
.grid th.sorted.asc::after { content: " ↑"; }
.grid th.l, .grid td.l { text-align: left; }
.grid td {
  text-align: right; padding: 12px; white-space: nowrap;
  border-bottom: 1px solid var(--grid); font-family: var(--mono); font-size: 14px; line-height: 20px;
}
.grid tbody tr { transition: background-color 300ms var(--ease); }
.grid tbody tr:hover { background: var(--raised); }
.grid tbody tr:last-child td { border-bottom: 0; }
.grid td.l { font-family: var(--sans); position: sticky; left: 0; background: var(--surface); z-index: 1; }
.grid tbody tr:hover td.l { background: var(--raised); }

.ex { display: flex; align-items: center; gap: 8px; }
.ex i { width: 8px; height: 8px; border-radius: 2px; flex: none; }
.ex b { font-weight: 600; }
.ex small { display: block; color: var(--muted); font-size: 12px; line-height: 16px; font-weight: 400; }
.sub { display: block; color: var(--muted); font-size: 12px; line-height: 16px; }

.oi-col { min-width: 220px; }
.bar { position: relative; height: 4px; margin-top: 4px; border-radius: 4px; background: var(--hover); overflow: hidden; }
.bar > span {
  position: absolute; inset: 0; border-radius: 4px; background: var(--ink-2);
  transform-origin: left; transition: transform 500ms var(--ease);
}

.depth-col { min-width: 240px; }
.dv { display: grid; grid-template-columns: 1fr 2px 1fr; align-items: center; gap: 0; height: 8px; margin-top: 4px; }
.dv .b, .dv .a { height: 8px; position: relative; }
.dv .b span, .dv .a span {
  position: absolute; top: 0; bottom: 0; width: 100%;
  transition: transform 500ms var(--ease);
}
.dv .b span { right: 0; background: var(--bid); border-radius: 4px 0 0 4px; transform-origin: right; }
.dv .a span { left: 0; background: var(--ask); border-radius: 0 4px 4px 0; transform-origin: left; }
.dv .mid { width: 2px; height: 12px; background: var(--axis); }
.dvals { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; line-height: 16px; }
.dvals .bb::before { content: "매수 "; color: var(--muted); font-family: var(--sans); }
.dvals .aa::before { content: "매도 "; color: var(--muted); font-family: var(--sans); }
.lb { color: var(--muted); }

.pos { color: var(--up); }
.neg { color: var(--down); }
.err { color: var(--muted); font-family: var(--sans); text-align: left !important; }

/* skeleton */
.sk { display: inline-block; height: 12px; border-radius: 4px; background: var(--hover); animation: sk 1.4s var(--ease) infinite; }
@keyframes sk { 50% { opacity: 0.4; } }

/* legend + chart */
.legend { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.legend button {
  display: flex; align-items: center; gap: 8px;
  font: inherit; font-size: 12px; line-height: 16px; color: var(--ink);
  background: var(--raised); border: 1px solid var(--ring); border-radius: 9999px;
  padding: 4px 12px; cursor: pointer;
  transition: opacity 300ms var(--ease), background-color 300ms var(--ease), transform 300ms var(--ease);
}
.legend button:hover { background: var(--hover); }
.legend button:active { transform: scale(0.98); }
.legend button:focus-visible { outline: 2px solid var(--s1); outline-offset: 2px; }
.legend button[aria-pressed="false"] { opacity: 0.4; }
.legend i { width: 12px; height: 2px; border-radius: 2px; }

.chart { position: relative; }
#depth-svg { display: block; width: 100%; height: 360px; overflow: visible; }
#depth-svg text { fill: var(--muted); font-family: var(--mono); font-size: 12px; }
#depth-svg .gl { stroke: var(--grid); stroke-width: 1; }
#depth-svg .ax { stroke: var(--axis); stroke-width: 1; }
#depth-svg .ln { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; transition: opacity 300ms var(--ease); }
#depth-svg .cross { stroke: var(--ink-2); stroke-width: 1; }
#depth-svg .side { fill: var(--ink-2); font-family: var(--sans); }

.tip {
  position: absolute; pointer-events: none; z-index: 3;
  min-width: 200px; padding: 12px;
  background: rgba(31, 31, 31, 0.96); border: 1px solid var(--ring); border-radius: 12px;
  font-size: 12px; line-height: 16px;
}
.tip .h { color: var(--ink-2); margin-bottom: 8px; }
.tip .r { display: flex; align-items: center; gap: 8px; justify-content: space-between; }
.tip .r + .r { margin-top: 4px; }
.tip .r span:first-child { display: flex; align-items: center; gap: 8px; }
.tip .r i { width: 8px; height: 8px; border-radius: 2px; }
.tip .r b { font-family: var(--mono); font-weight: 500; }

/* notes */
.notes { padding: 8px 0 32px; max-width: 760px; }
.notes h2 { font-size: 18px; line-height: 28px; margin-bottom: 12px; }
.notes ul { margin: 0; padding-left: 16px; color: var(--ink-2); }
.notes li + li { margin-top: 8px; }
.notes b { color: var(--ink); font-weight: 600; }

.foot {
  max-width: 1280px; margin: 0 auto; padding: 24px 16px 40px;
  color: var(--muted); font-size: 12px; line-height: 16px;
  border-top: 1px solid var(--grid);
}

@media (max-width: 900px) {
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .tile .v { font-size: 24px; line-height: 32px; }
}
@media (max-width: 560px) {
  .top { gap: 12px; }
  .brand span:last-child { font-size: 14px; }
  .intro { padding: 40px 0 24px; }
  .intro h1 { font-size: 24px; line-height: 32px; }
  .intro p { font-size: 14px; line-height: 20px; }
  .tile { padding: 12px; }
  .tile .v { font-size: 20px; line-height: 28px; }
  #depth-svg { height: 280px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: opacity 200ms linear !important; }
}

/* ---------- liquidations ---------- */
.liq .panel-head { align-items: flex-start; }
.liq h3 { font-size: 14px; line-height: 20px; font-weight: 600; margin: 24px 0 8px; color: var(--ink-2); }
.liq-side h3 { margin-top: 0; }

.seg { display: flex; gap: 2px; padding: 2px; background: var(--raised); border: 1px solid var(--ring); border-radius: 9999px; }
.seg button {
  font: inherit; font-size: 12px; line-height: 16px; color: var(--ink-2);
  background: transparent; border: 0; border-radius: 9999px; padding: 4px 12px; cursor: pointer;
  transition: background-color 300ms var(--ease), color 300ms var(--ease), transform 300ms var(--ease);
}
.seg button:hover { color: var(--ink); }
.seg button:active { transform: scale(0.98); }
.seg button:focus-visible { outline: 2px solid var(--s1); outline-offset: 2px; }
.seg button[aria-pressed="true"] { background: var(--hover); color: var(--ink); }

.conns { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.conn { display: flex; align-items: center; gap: 8px; font-size: 12px; line-height: 16px; color: var(--ink-2); }
.conn i { width: 8px; height: 8px; border-radius: 2px; }
.conn small { font-size: 12px; color: var(--muted); }
.conn.live small { color: var(--up); }
.conn.retry small { color: #fab219; }

.liq-grid { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 24px; }

.liq-totals { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.lt { background: var(--raised); border: 1px solid var(--ring); border-radius: 12px; padding: 16px; }
.lt .k { display: flex; align-items: center; gap: 8px; color: var(--ink-2); font-size: 12px; line-height: 16px; }
.lt .k::before { content: ""; width: 8px; height: 8px; border-radius: 2px; }
.lt.long .k::before { background: var(--long); }
.lt.short .k::before { background: var(--short); }
.lt .v { font-size: 30px; line-height: 36px; font-weight: 600; margin-top: 8px; }
.lt .s { color: var(--muted); font-size: 12px; line-height: 16px; margin-top: 4px; }

.ratio { position: relative; height: 8px; margin-top: 12px; border-radius: 4px; overflow: hidden; background: var(--short); }
.ratio.empty { background: var(--hover); }
.ratio .rl {
  position: absolute; inset: 0; background: var(--long); transform-origin: left;
  box-shadow: 2px 0 0 var(--surface); transition: transform 500ms var(--ease);
}
.ratio .rs { display: none; }
.ratio-label { margin-top: 8px; }

.lv-head, .lv-row { display: grid; grid-template-columns: 112px 1fr 72px 1fr 72px; gap: 8px; align-items: center; }
.lv-head { color: var(--muted); font-size: 12px; line-height: 16px; margin-bottom: 4px; }
.lv-row { padding: 8px 0; border-top: 1px solid var(--grid); font-size: 14px; line-height: 20px; }
.lv-name { display: flex; align-items: center; gap: 8px; }
.lv-name i { width: 8px; height: 8px; border-radius: 2px; }
.lv-bar { height: 8px; background: var(--hover); border-radius: 4px; overflow: hidden; }
.lv-bar span { display: block; height: 100%; border-radius: 4px; transform-origin: left; transition: transform 500ms var(--ease); }
.lv-bar.l span { background: var(--long); }
.lv-bar.s span { background: var(--short); }
.lv-val { text-align: right; font-variant-numeric: tabular-nums; }

#liq-svg { display: block; width: 100%; height: 160px; overflow: visible; }
#liq-svg text { fill: var(--muted); font-family: var(--sans); font-size: 12px; }
#liq-svg .gl { stroke: var(--grid); stroke-width: 1; }
#liq-svg .ax { stroke: var(--axis); stroke-width: 1; }
#liq-svg .bl { fill: var(--long); }
#liq-svg .bs { fill: var(--short); }

.feed { list-style: none; margin: 0; padding: 0; max-height: 560px; overflow-y: auto; }
.feed li {
  display: grid; grid-template-columns: 64px 1fr auto; grid-template-areas: "t x u" "t s b";
  column-gap: 12px; padding: 8px 12px; border-radius: 8px; font-size: 12px; line-height: 16px;
  font-variant-numeric: tabular-nums;
}
.feed li + li { margin-top: 2px; }
.feed li.long { background: rgba(230, 103, 103, 0.08); }
.feed li.short { background: rgba(57, 135, 229, 0.08); }
.feed li.big.long { background: rgba(230, 103, 103, 0.2); }
.feed li.big.short { background: rgba(57, 135, 229, 0.2); }
.feed li.big .fu { font-weight: 600; color: var(--ink); }
.feed li.new { animation: feedIn 500ms var(--ease); }
.feed .ft { grid-area: t; color: var(--muted); align-self: center; }
.feed .fx { grid-area: x; display: flex; align-items: center; gap: 8px; color: var(--ink); }
.feed .fx i { width: 8px; height: 8px; border-radius: 2px; }
.feed .fs { grid-area: s; color: var(--ink-2); }
.feed li.long .fs::before { content: "▼ "; color: var(--long); }
.feed li.short .fs::before { content: "▲ "; color: var(--short); }
.feed .fu { grid-area: u; text-align: right; color: var(--ink-2); }
.feed .fb { grid-area: b; text-align: right; color: var(--muted); }
.feed .empty { display: block; color: var(--muted); padding: 24px 12px; text-align: center; background: var(--raised); }
@keyframes feedIn { from { opacity: 0; transform: translateY(-8px); } }

@media (max-width: 900px) {
  .liq-grid { grid-template-columns: 1fr; }
  .feed { max-height: 400px; }
}
@media (max-width: 560px) {
  .lt .v { font-size: 20px; line-height: 28px; }
  .lv-head, .lv-row { grid-template-columns: 80px 1fr 64px 1fr 64px; gap: 4px; }
  .lv-row { font-size: 12px; line-height: 16px; }
}

/* ---------- liquidation map ---------- */
.lmap .panel-head { align-items: flex-start; }
.lmap .liq-totals { margin-bottom: 24px; }
.lmap .lt .s + .s { margin-top: 2px; }
#lm-svg { display: block; width: 100%; height: 320px; overflow: visible; touch-action: pan-y; }
#lm-svg text { fill: var(--muted); font-family: var(--sans); font-size: 12px; }
#lm-svg .dim { fill: var(--axis); }
#lm-svg .gl { stroke: var(--grid); stroke-width: 1; }
#lm-svg .ax { stroke: var(--axis); stroke-width: 1; }
#lm-svg .bl { fill: var(--long); }
#lm-svg .bs { fill: var(--short); }
#lm-svg .now { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 4 4; }
#lm-svg .nowt { fill: var(--ink); font-weight: 500; }
#lm-svg .side { fill: var(--ink-2); }
#lm-svg .hl { fill: rgba(255, 255, 255, 0.08); }
.tip .r.sub { color: var(--ink-2); }
.tip .r.tot { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--grid); color: var(--ink-2); }
@media (max-width: 560px) {
  #lm-svg { height: 240px; }
  #lm-svg .dim { display: none; }
}

/* liquidation map: more sources */
.lm-ctl { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
#lm-legend { margin-bottom: 8px; }
#lm-legend i { width: 8px; height: 8px; border-radius: 2px; }
#lm-legend .dim { color: var(--muted); margin-left: 4px; }
.lm-key { margin: 0 0 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.lm-key .sw { display: inline-block; width: 12px; height: 12px; border-radius: 2px; background: var(--long); }
.lm-key .sw.est { opacity: 0.45; }
.lm-key .sw.act { margin-left: 8px; }
#lm-svg { height: 360px; }
#lm-svg .bl, #lm-svg .bs { opacity: 0.45; }
#lm-svg .bla { fill: var(--long); }
#lm-svg .bsa { fill: var(--short); }
@media (max-width: 560px) {
  .lm-ctl { justify-content: flex-start; }
  #lm-svg { height: 260px; }
}