:root {
  --bg: #0b0d11; --panel: #14181f; --panel2: #1b212b; --line: #2a3340; --text: #e6ebf2; --muted: #8a96a8;
  --accent: #f5a524; --accent2: #2dd4bf; --danger: #ef5350; --warn: #fbbf24;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: #000; color: var(--text);
  font: 14px/1.45 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif; overflow: hidden; user-select: none; }
.hidden { display: none !important; }
#stage { position: fixed; inset: 0; background: #000; cursor: default; }
#stage canvas#gl, #stage canvas#hud { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: fill; display: block; }
#stage canvas#hud { pointer-events: none; }
#stage.letterbox canvas#gl { object-fit: contain; }
#stage.playing { cursor: none; }

/* HUD */
#hudtext { position: absolute; inset: 0; pointer-events: none; contain: layout style paint; font-variant-numeric: tabular-nums; text-shadow: 0 1px 3px #000, 0 0 2px #000; }
.hud-top { position: absolute; top: 14px; left: 0; right: 0; display: flex; justify-content: center; gap: 56px; font-size: 20px; align-items: baseline; }
.hud-top .k { color: var(--muted); font-size: 12px; letter-spacing: .12em; margin-right: 4px; }
.hud-top .time { font-size: 34px; font-weight: 700; min-width: 3ch; text-align: center; }
#h-center { position: absolute; top: 28%; left: 0; right: 0; text-align: center; font-size: 96px; font-weight: 800; color: #fff; }
#h-lab { position: absolute; left: 18px; top: 70px; font: 15px/1.6 Consolas, "Cascadia Mono", monospace; background: rgba(8,10,14,.72); padding: 10px 14px; border: 1px solid var(--line); border-radius: 6px; min-width: 330px; }
#h-lab b { color: var(--accent2); }
#h-status { position: absolute; left: 12px; bottom: 10px; font-size: 12px; color: #b8c2d0; }
#h-status .ok { color: #6ee7a8; } #h-status .bad { color: var(--warn); }
#h-fps { position: absolute; right: 12px; bottom: 10px; font-size: 12px; color: #b8c2d0; }

/* overlays */
.overlay { position: absolute; inset: 0; background: rgba(5,7,10,.82); display: flex; align-items: center; justify-content: center; backdrop-filter: blur(3px); overflow: auto; }
.overlay-center { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(5,7,10,.6); }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 22px 26px; max-width: 560px; }
.panel.narrow { max-width: 460px; text-align: center; }
.panel h2 { margin: 0 0 8px; }
.bignum { font-size: 64px; font-weight: 800; color: var(--accent2); font-variant-numeric: tabular-nums; margin: 10px 0; }
.shell { width: min(1080px, 96vw); max-height: 94vh; overflow: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 0 0 22px; box-shadow: 0 20px 70px #000a; }
header { display: flex; align-items: center; gap: 22px; padding: 14px 22px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--panel); z-index: 2; flex-wrap: wrap; }
.logo { font-weight: 800; letter-spacing: .08em; font-size: 18px; } .logo span { color: var(--accent); }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav button { background: transparent; border: 0; color: var(--muted); padding: 8px 14px; border-radius: 6px; cursor: pointer; font: inherit; }
nav button:hover { color: var(--text); background: var(--panel2); }
nav button.active { color: #000; background: var(--accent); font-weight: 600; }
.tab { display: none; padding: 20px 22px 0; } .tab.active { display: block; }
.banner { margin: 14px 22px 0; padding: 12px 16px; background: #1d2a22; border: 1px solid #2f6b4a; border-radius: 8px; }
.banner b { color: var(--accent2); }
.summary { color: var(--muted); margin-bottom: 14px; } .summary b { color: var(--text); }
.modes { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px; margin-bottom: 18px; }
.mode { text-align: left; background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; color: var(--text); cursor: pointer; font: inherit; }
.mode:hover { border-color: #4a586c; } .mode.sel { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.mode h4 { margin: 0 0 4px; font-size: 15px; } .mode p { margin: 0; color: var(--muted); font-size: 12px; } .mode .best { color: var(--accent2); font-size: 12px; margin-top: 6px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; } @media (max-width: 860px) { .grid2 { grid-template-columns: 1fr; } }
.card { background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.card h3, h3 { margin: 0 0 12px; font-size: 15px; }
label { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 8px 0; }
label.check { display: block; margin: 9px 0; line-height: 1.55; }
label.check input { margin: 0 8px 0 0; vertical-align: -2px; } label.inline { gap: 10px; }
input[type=number], select { background: #0d1117; border: 1px solid var(--line); color: var(--text); border-radius: 6px; padding: 7px 9px; width: 150px; font: inherit; user-select: text; }
input[type=number]:focus, select:focus { outline: 1px solid var(--accent); }
input[type=range] { width: 180px; accent-color: var(--accent); }
input[type=color] { background: none; border: 1px solid var(--line); border-radius: 4px; width: 56px; height: 28px; padding: 0; }
button { font: inherit; background: var(--panel2); color: var(--text); border: 1px solid var(--line); padding: 8px 14px; border-radius: 6px; cursor: pointer; }
button:hover { border-color: #5a6a80; }
button.primary { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 700; }
button.primary:hover { filter: brightness(1.08); }
button.big { padding: 12px 38px; font-size: 18px; }
button.danger { color: var(--danger); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; } .row.between { justify-content: space-between; }
.muted { color: var(--muted); } .small { font-size: 12px; }
.derived { background: #0d1117; border: 1px solid var(--line); border-radius: 6px; padding: 8px 12px; font: 12.5px/1.65 Consolas, "Cascadia Mono", monospace; margin: 10px 0; user-select: text; }
.derived b { color: var(--accent2); }
.warn { color: var(--warn); font-size: 12.5px; margin-top: 8px; }
code, kbd { background: #0d1117; border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; font: 12px Consolas, monospace; }
.steps { padding-left: 20px; margin: 0 0 12px; } .steps li { margin: 6px 0; }
.calres { margin-top: 12px; } .calres .ok { color: #6ee7a8; } .calres .bad { color: var(--warn); }
.selftest { margin-top: 12px; font: 12px/1.6 Consolas, monospace; user-select: text; }
.selftest .pass { color: #6ee7a8; } .selftest .fail { color: var(--danger); }
#ch-prev { background: #3a4452; border-radius: 6px; margin-bottom: 8px; width: 200px; height: 200px; }
.tablewrap { max-height: 300px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 7px 12px; border-bottom: 1px solid var(--line); } th { color: var(--muted); font-weight: 500; position: sticky; top: 0; background: var(--panel2); }
.bests { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; margin: 8px 0 14px; }
.best { background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; } .best .n { color: var(--muted); font-size: 12px; } .best .v { font-size: 22px; font-weight: 700; color: var(--accent2); }

#h-strafe { position: absolute; left: 0; right: 0; bottom: 64px; text-align: center; font-size: 20px; font-variant-numeric: tabular-nums; }
#h-strafe .ok { color: #6ee7a8; font-weight: 700; } #h-strafe .bad { color: #fbbf24; font-weight: 700; }
#h-strafe .muted { color: #b8c2d0; margin-top: 2px; }