:root {
  --bg: #050810;
  --panel: #0d1220;
  --panel-2: #141b2e;
  --border: #22304d;
  --text: #e6ecff;
  --muted: #8e9bbf;
  --accent: #ff8a3d;
  --accent-2: #4fa3ff;
  --danger: #ff4d6d;
  --ok: #4fe3a0;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 14px; }

#app { display: grid; grid-template-columns: 340px 1fr; height: 100vh; height: 100dvh; }

#panel { background: var(--panel); border-right: 1px solid var(--border); overflow-y: auto;
  padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.brand h1 { margin: 0; font-size: 22px; letter-spacing: .5px; }
.brand p { margin: 2px 0 0; color: var(--muted); font-size: 12px; }

.tabs { display: flex; gap: 4px; background: var(--panel-2); padding: 4px; border-radius: var(--radius); }
.tab { flex: 1; background: transparent; border: 0; color: var(--muted); padding: 8px 4px; border-radius: 7px;
  cursor: pointer; font-size: 12px; font-weight: 600; }
.tab.active { background: var(--accent); color: #111; }
.tab:hover:not(.active) { color: var(--text); }

.tab-content { display: none; flex-direction: column; gap: 12px; }
.tab-content.active { display: flex; }

label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
label > span { color: var(--text); font-weight: 600; }
label small { color: var(--muted); font-weight: 400; }
label.check { flex-direction: row; align-items: center; gap: 8px; }
.sub { padding: 10px; background: var(--panel-2); border-radius: var(--radius); display: flex; flex-direction: column; gap: 10px; }

select, input[type=number] { background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 7px; padding: 8px 10px; font-size: 13px; width: 100%; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.row { display: flex; gap: 8px; }
.row > * { flex: 1; }

button { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; cursor: pointer; font-weight: 600; font-size: 13px; }
button:hover { border-color: var(--accent-2); }
button.primary { background: var(--accent); color: #111; border-color: var(--accent); }
button.primary:hover { filter: brightness(1.1); }

.hint { color: var(--muted); font-size: 12px; line-height: 1.5; margin: 0; }
kbd { background: var(--panel-2); border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; font-size: 11px; }
.card { background: var(--panel-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; font-size: 13px; }
.card h3 { margin: 0 0 6px; font-size: 15px; }
.card dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; margin: 0; }
.card dt { color: var(--muted); }
.card dd { margin: 0; text-align: right; }
.hidden { display: none !important; }
.credits { margin-top: auto; color: var(--muted); font-size: 11px; line-height: 1.5; }

#stage { position: relative; overflow: hidden; background: var(--bg); }
#canvas { display: block; width: 100%; height: 100%; cursor: grab; touch-action: none; }
#canvas.dragging { cursor: grabbing; }
#canvas.pointer { cursor: pointer; }

#hud { position: absolute; top: 12px; left: 14px; display: flex; gap: 14px; font-size: 12px; color: var(--muted);
  pointer-events: none; text-shadow: 0 1px 2px #000; }
#hudMode { color: var(--text); font-weight: 700; letter-spacing: .5px; text-transform: uppercase; }

#results { position: absolute; right: 14px; bottom: 14px; width: min(420px, calc(100% - 28px)); max-height: calc(100% - 28px);
  overflow-y: auto; background: rgba(13, 18, 32, .92); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; backdrop-filter: blur(6px); box-shadow: 0 10px 40px rgba(0,0,0,.6); }
#results .close { position: absolute; top: 8px; right: 8px; width: 28px; height: 28px; padding: 0; border-radius: 50%;
  line-height: 1; font-size: 18px; }
#results h2 { margin: 0 0 4px; font-size: 18px; padding-right: 28px; overflow-wrap: anywhere; }
#results h2 .tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 999px; vertical-align: middle;
  margin-left: 6px; background: var(--panel-2); border: 1px solid var(--border); }
#results .tag.lvl0 { color: var(--ok); } #results .tag.lvl1 { color: #c8e36a; } #results .tag.lvl2 { color: #ffd34d; }
#results .tag.lvl3 { color: var(--accent); } #results .tag.lvl4 { color: var(--danger); } #results .tag.lvl5 { color: #ff2fd0; }
#results p.lead { margin: 6px 0 12px; color: var(--muted); line-height: 1.5; }
#results dl { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: 6px 12px; margin: 0 0 12px; font-size: 13px; }
#results dt { color: var(--muted); } #results dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
#results ul { margin: 0; padding-left: 18px; line-height: 1.55; font-size: 13px; }
#results h4 { margin: 10px 0 6px; font-size: 13px; color: var(--accent-2); text-transform: uppercase; letter-spacing: .5px; }

#panelToggle { display: none; position: absolute; top: 10px; right: 12px; width: 40px; height: 40px; padding: 0; font-size: 18px; }

@media (max-width: 860px) {
  #app { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  #panel { order: 2; max-height: 48vh; max-height: 48dvh; border-right: 0; border-top: 1px solid var(--border); }
  #panel.collapsed { display: none; }
  #stage { order: 1; }
  #panelToggle { display: block; }
  #results { bottom: 10px; right: 10px; max-height: 70%; }
}