:root {
  --bg: #0f172a;
  --panel: #172033;
  --panel-2: #1e293b;
  --line: #26334a;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --easy: #4ade80;
  --medium: #38bdf8;
  --hard: #fb923c;
  --insane: #f472b6;
  --gold: #fbbf24;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 50% -10%, #1b2740 0%, var(--bg) 60%);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}

.wrap { max-width: 1100px; margin: 0 auto; padding: 28px 18px 60px; }

/* ---------------------------------- head --------------------------------- */

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { font-size: 34px; }
.brand h1 { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.brand p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  color: var(--muted);
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--easy);
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
  animation: pulse 2s infinite;
}
.dot.off { background: #ef4444; animation: none; }
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* --------------------------------- stats --------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 26px;
}
.stat {
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 18px;
}
.stat .label { color: var(--muted); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
.stat .value { font-size: 28px; font-weight: 700; margin-top: 6px; font-variant-numeric: tabular-nums; }
.stat .value.gold { color: var(--gold); }

/* --------------------------------- panels -------------------------------- */

.grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 18px;
}
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  margin-bottom: 18px;
}
.panel h2 {
  margin: 0 0 14px;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel h2 .count { color: var(--muted); font-weight: 400; font-size: 13px; }

/* --------------------------------- tabs ---------------------------------- */

.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.tab {
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: 0.15s;
}
.tab:hover { color: var(--text); }
.tab.on { color: #06121f; font-weight: 600; }
.tab.on[data-level="easy"] { background: var(--easy); border-color: var(--easy); }
.tab.on[data-level="medium"] { background: var(--medium); border-color: var(--medium); }
.tab.on[data-level="hard"] { background: var(--hard); border-color: var(--hard); }
.tab.on[data-level="insane"] { background: var(--insane); border-color: var(--insane); }

/* --------------------------------- rows ---------------------------------- */

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 10px;
  border-radius: 12px;
  border-bottom: 1px solid var(--line);
}
.row:last-child { border-bottom: none; }
.row:hover { background: rgba(255, 255, 255, 0.03); }

.rank {
  width: 30px; height: 30px;
  flex: none;
  display: grid; place-items: center;
  border-radius: 9px;
  background: var(--panel-2);
  font-size: 13px; font-weight: 700;
  color: var(--muted);
}
.rank.r1 { background: rgba(251, 191, 36, 0.18); color: var(--gold); }
.rank.r2 { background: rgba(203, 213, 225, 0.16); color: #cbd5e1; }
.rank.r3 { background: rgba(180, 120, 60, 0.18); color: #d69457; }

.who { flex: 1; min-width: 0; }
.who .name { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.who .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }

.score { font-weight: 700; font-variant-numeric: tabular-nums; font-size: 15px; }
.score small { display: block; color: var(--muted); font-weight: 400; font-size: 11px; text-align: right; }

.chip {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 600;
  white-space: nowrap;
}
.chip.easy { background: rgba(74, 222, 128, 0.15); color: var(--easy); }
.chip.medium { background: rgba(56, 189, 248, 0.15); color: var(--medium); }
.chip.hard { background: rgba(251, 146, 60, 0.15); color: var(--hard); }
.chip.insane { background: rgba(244, 114, 182, 0.15); color: var(--insane); }

.empty { color: var(--muted); font-size: 13px; text-align: center; padding: 26px 10px; }

.bars { display: flex; flex-direction: column; gap: 12px; }
.bar-row .bar-head { display: flex; justify-content: space-between; font-size: 12px; margin-bottom: 6px; }
.bar-row .bar-head .n { color: var(--muted); font-variant-numeric: tabular-nums; }
.track { height: 8px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.fill { height: 100%; border-radius: 999px; transition: width 0.5s ease; }

footer.foot { margin-top: 28px; text-align: center; color: var(--muted); font-size: 12px; }
footer.foot code { color: var(--accent); }