:root {
  --bg: rgba(8, 10, 16, 0.82);
  --line: rgba(120, 220, 255, 0.28);
  --acc: #39e6ff;
  --acc2: #ff3dac;
  --txt: #d9e4ee;
  --dim: #7c8a99;
  --font: "JetBrains Mono", "Consolas", "Menlo", monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: #000; color: var(--txt); font-family: var(--font); }
canvas#game { display: block; width: 100vw; height: 100vh; }
.hidden { display: none !important; }

/* ---------- overlays ---------- */
.overlay {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at center, rgba(10, 16, 28, 0.55), rgba(0, 0, 0, 0.88));
  z-index: 10;
}
#menu { background: radial-gradient(ellipse at 50% 30%, #12233a 0%, #05070c 70%); }
.card {
  width: min(440px, calc(100vw - 32px)); max-height: calc(100vh - 32px); overflow-y: auto;
  padding: 26px 28px; background: var(--bg); border: 1px solid var(--line);
  box-shadow: 0 0 40px rgba(57, 230, 255, 0.08), inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}
.card.small { width: min(360px, calc(100vw - 32px)); }
.logo { display: block; width: 100%; margin: -6px 0 6px; filter: drop-shadow(0 0 14px rgba(57,230,255,0.15)); }
.logo.small { width: 70%; margin: 0 auto 10px; }
#hudLogo { position: absolute; left: 50%; top: 10px; transform: translateX(-50%); width: 150px; opacity: 0.55; }
h1 { margin: 0 0 6px; font-size: 26px; letter-spacing: 6px; color: #fff; }
h1 span { display: block; font-size: 12px; letter-spacing: 8px; color: var(--acc); margin-top: 4px; }
.sub { color: var(--dim); font-size: 12px; margin: 0 0 18px; line-height: 1.5; }
label { display: block; font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--dim); margin: 14px 0 0; }
label output { float: right; color: var(--acc); text-transform: none; letter-spacing: 0; }
input[type=text], select {
  width: 100%; margin-top: 6px; padding: 9px 10px; background: #0b1018; color: var(--txt);
  border: 1px solid var(--line); font-family: var(--font); font-size: 13px; outline: none;
}
input[type=text]:focus, select:focus { border-color: var(--acc); }
input[type=range] { width: 100%; margin-top: 10px; accent-color: var(--acc); }
.row { display: flex; gap: 6px; }
.row input { flex: 1; }
button {
  font-family: var(--font); cursor: pointer; border: 1px solid var(--line); background: #0b1018; color: var(--txt);
  padding: 9px 14px; font-size: 13px;
}
button.ghost { margin-top: 6px; }
button.ghost:hover { border-color: var(--acc); color: var(--acc); }
button.primary {
  width: 100%; margin-top: 22px; padding: 14px; font-size: 15px; letter-spacing: 4px; font-weight: bold;
  background: linear-gradient(90deg, #0d3a48, #2a1036); border-color: var(--acc); color: #fff;
}
button.primary:hover { background: linear-gradient(90deg, #13586c, #45185a); }
button.wide { width: 100%; }
.stats { color: var(--dim); font-size: 11px; margin: 14px 0 0; line-height: 1.6; }
.bar { height: 6px; background: #0b1018; border: 1px solid var(--line); margin-top: 16px; }
#loadbar { height: 100%; width: 0; background: linear-gradient(90deg, var(--acc), var(--acc2)); transition: width 0.1s; }

/* ---------- HUD ---------- */
#hud { position: fixed; inset: 0; pointer-events: none; z-index: 5; }
.panel { background: rgba(6, 9, 14, 0.62); border: 1px solid var(--line); }
#crosshair { position: absolute; left: 50%; top: 50%; width: 6px; height: 6px; margin: -3px 0 0 -3px; border-radius: 50%; background: rgba(255, 255, 255, 0.85); box-shadow: 0 0 6px var(--acc); }
#info { position: absolute; left: 12px; top: 12px; padding: 8px 12px; font-size: 12px; line-height: 1.6; white-space: pre; }
#info b { color: var(--acc); font-weight: normal; }
#minimap { position: absolute; right: 12px; top: 12px; width: 180px; height: 180px; image-rendering: pixelated; }
#speedo { position: absolute; right: 12px; bottom: 12px; padding: 10px 16px; font-size: 34px; color: #fff; text-align: right; }
#speedo small { display: block; font-size: 11px; color: var(--acc); letter-spacing: 2px; }
#hint { position: absolute; left: 50%; bottom: 90px; transform: translateX(-50%); font-size: 14px; color: #fff; text-shadow: 0 0 6px #000; }
#hint:not(:empty) { padding: 6px 14px; background: rgba(6, 9, 14, 0.6); border: 1px solid var(--acc); }
#toast { position: absolute; left: 50%; top: 18%; transform: translateX(-50%); font-size: 18px; letter-spacing: 3px; color: var(--acc); text-shadow: 0 0 10px #000; opacity: 0; transition: opacity 0.4s; }
#toast.show { opacity: 1; }
#keys { position: absolute; left: 12px; bottom: 12px; padding: 8px 12px; font-size: 11px; line-height: 1.7; color: var(--dim); }
#keys b { color: var(--txt); font-weight: normal; }

/* ---------- DEBUG ---------- */
#debug {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(400px, 100vw); z-index: 20;
  display: flex; flex-direction: column; background: rgba(6, 9, 14, 0.94); border-left: 1px solid var(--line);
  font-size: 12px; box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}
#debug header { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; border-bottom: 1px solid var(--line); letter-spacing: 4px; color: var(--acc2); font-weight: bold; }
#debug header small { color: var(--dim); letter-spacing: 2px; font-weight: normal; margin-left: 6px; }
#debug header button { padding: 2px 9px; }
#debug footer { padding: 7px 14px; border-top: 1px solid var(--line); color: var(--dim); font-size: 10px; }
#debugBody { flex: 1; overflow-y: auto; }
.dbg-sec { border-bottom: 1px solid rgba(120, 220, 255, 0.12); }
.dbg-head { padding: 10px 14px; cursor: pointer; user-select: none; color: var(--txt); letter-spacing: 1px; }
.dbg-head:hover { background: rgba(57, 230, 255, 0.07); color: var(--acc); }
.dbg-caret { display: inline-block; width: 14px; color: var(--acc); transition: transform 0.15s; }
.dbg-ico { display: inline-block; width: 20px; color: var(--dim); }
.dbg-sec.open .dbg-caret { transform: rotate(90deg); }
.dbg-sec.open .dbg-head { color: var(--acc); background: rgba(57, 230, 255, 0.05); }
.dbg-content { display: none; padding: 4px 14px 12px; }
.dbg-sec.open .dbg-content { display: block; }
.dbg-row { display: grid; grid-template-columns: 42% 1fr; align-items: center; gap: 8px; margin: 6px 0; }
.dbg-row label { margin: 0; text-transform: none; letter-spacing: 0; font-size: 11px; color: var(--txt); }
.dbg-row.dbg-check { grid-template-columns: 1fr auto; }
.dbg-row input[type=checkbox] { accent-color: var(--acc); width: 16px; height: 16px; }
.dbg-row select { margin: 0; padding: 4px 6px; font-size: 11px; }
.dbg-slider { display: flex; align-items: center; gap: 6px; }
.dbg-slider input { margin: 0; flex: 1; }
.dbg-slider output { min-width: 66px; text-align: right; color: var(--acc); font-size: 11px; }
.dbg-btns { display: flex; flex-wrap: wrap; gap: 5px; margin: 8px 0; }
.dbg-btns button { padding: 5px 8px; font-size: 11px; }
.dbg-btns button:hover { border-color: var(--acc); color: var(--acc); }
.dbg-btns button.danger { border-color: rgba(255, 61, 172, 0.5); }
.dbg-btns button.danger:hover { color: var(--acc2); border-color: var(--acc2); }
.dbg-stat { margin: 6px 0; padding: 8px; background: rgba(0, 0, 0, 0.35); border: 1px solid rgba(120, 220, 255, 0.12); color: #b9f3ff; font-size: 11px; line-height: 1.5; white-space: pre-wrap; font-family: var(--font); }
.dbg-note { color: var(--dim); font-size: 11px; line-height: 1.5; margin: 6px 0; }
.dbg-note b { color: var(--acc2); font-weight: normal; }