:root {
  --ink: #f4f1ea;
  --dim: #b9b8c4;
  --glass: rgba(14, 15, 28, 0.62);
  --line: rgba(244, 241, 234, 0.2);
  --cell: #ffc23d;
  --good: #5ef0c2;
  --warn: #ff9b3d;
  --bad: #ff4d5e;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #14121f;
  color: var(--ink);
  font: 15px/1.45 var(--sans);
}

#view { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }

kbd {
  display: inline-block;
  min-width: 1.7em;
  padding: 0.05em 0.4em;
  margin-right: 0.2em;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
  font: 600 0.85em/1.5 var(--mono);
  text-align: center;
}

/* Flight display */
.hud { position: fixed; inset: 0; pointer-events: none; font-family: var(--mono); }

.panel {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 244px;
  padding: 12px 14px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.row { display: flex; justify-content: space-between; align-items: baseline; }
.label { color: var(--dim); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
.big { font-size: 30px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.bar { height: 12px; margin-top: 4px; background: rgba(255, 255, 255, 0.1); border-radius: 2px; overflow: hidden; }
.bar.thin { height: 6px; }
.bar i { display: block; height: 100%; width: 100%; background: var(--cell); transition: background 0.2s; }
#hullBar { background: var(--good); }
.spares { margin-top: 10px; align-items: center; }
.cells { display: flex; gap: 5px; min-height: 16px; }
.cells i { width: 24px; height: 13px; border: 1.5px solid var(--dim); border-radius: 2px; opacity: 0.35; }
.cells i.full { background: var(--cell); border-color: var(--cell); opacity: 1; }
.prompt { margin-top: 8px; padding: 4px 8px; background: var(--cell); color: #1a1408; font-weight: 700; font-size: 13px; border-radius: 3px; }
.prompt.alarm { animation: throb 0.5s infinite alternate; }
.prompt.none { background: var(--bad); color: #fff; }
.hull { margin-top: 10px; }
.power.low .big { color: var(--bad); }

.center { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); text-align: center; white-space: nowrap; }
.stealth {
  display: inline-block;
  padding: 3px 14px;
  border-radius: 3px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: rgba(94, 240, 194, 0.18);
  color: var(--good);
}
.stealth.seen { background: rgba(255, 155, 61, 0.25); color: var(--warn); }
.stealth.hunt { background: var(--bad); color: #fff; }
.wave { margin-top: 6px; font-size: 14px; color: var(--ink); text-shadow: 0 1px 3px #000; font-variant-numeric: tabular-nums; }

.radar {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--line);
}

.hintbar {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 16px;
  padding: 6px 12px;
  background: var(--glass);
  border-radius: 6px;
  font-size: 12px;
  white-space: nowrap;
  transition: opacity 1s;
}
.hintbar.gone { opacity: 0; }

.reticle {
  position: fixed;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border: 2px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  pointer-events: none;
  will-change: transform;
}
.reticle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4px;
  height: 4px;
  margin: -2px;
  background: #fff;
  border-radius: 50%;
}
.reticle.locked { border-color: var(--bad); border-radius: 4px; }
.reticle.locked::after { background: var(--bad); }

.vignette { position: fixed; inset: 0; pointer-events: none; opacity: 0; box-shadow: inset 0 0 130px 50px var(--bad); }
.vignette.low { box-shadow: inset 0 0 110px 30px var(--warn); }

.banner {
  position: fixed;
  top: 27%;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 22px;
  background: var(--glass);
  border-left: 4px solid var(--cell);
  font: 700 clamp(18px, 3vw, 28px)/1.3 var(--mono);
  text-align: center;
  pointer-events: none;
}

/* Menu */
.menu {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(420px, 100%);
  padding: 28px 28px 20px;
  overflow-y: auto;
  background: linear-gradient(90deg, rgba(12, 12, 24, 0.94) 72%, rgba(12, 12, 24, 0));
  padding-right: 52px;
}
.kicker { margin: 0; color: var(--cell); font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: 0.16em; }
h1 { margin: 2px 0 8px; font: 800 44px/1.05 var(--mono); letter-spacing: -0.03em; }
.pitch { margin: 0; color: var(--dim); }
h2 { margin: 22px 0 8px; font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--dim); }

.actions { display: flex; gap: 8px; margin-top: 18px; }
button, .upload {
  font: 600 14px var(--sans);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 9px 14px;
  cursor: pointer;
}
button:hover, .upload:hover { background: rgba(255, 255, 255, 0.16); }
button:focus-visible, .upload:focus-within, input:focus-visible { outline: 2px solid var(--cell); outline-offset: 2px; }
button.primary { background: var(--cell); border-color: var(--cell); color: #1a1408; font-size: 16px; padding: 10px 22px; }
button.primary:hover { background: #ffd36f; }
button.primary kbd { border-color: rgba(0, 0, 0, 0.3); background: rgba(0, 0, 0, 0.08); margin: 0 0 0 0.5em; }

.keys { margin: 0; display: grid; grid-template-columns: 1fr; gap: 5px; }
.keys div { display: grid; grid-template-columns: 92px 1fr; align-items: center; }
.keys dt { white-space: nowrap; }
.keys dd { margin: 0; color: var(--dim); }

.upload { display: block; border-style: dashed; text-align: center; padding: 14px; }
.upload input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.upload span { display: block; }
.upload small { color: var(--dim); font-weight: 400; }
.status { margin: 8px 0 0; font-size: 13px; color: var(--dim); overflow-wrap: anywhere; }
.error { margin: 8px 0 0; padding: 6px 10px; font-size: 13px; background: rgba(255, 77, 94, 0.18); border-left: 3px solid var(--bad); }
.note { margin: 10px 0 0; font-size: 13px; color: var(--dim); }

.tools { margin-top: 10px; }
.turns { display: flex; gap: 6px; }
.turns button { flex: 1; padding: 7px 4px; font-size: 13px; }
.field { display: flex; align-items: center; gap: 10px; margin-top: 10px; font-size: 13px; }
.field input[type="range"] { flex: 1; accent-color: var(--cell); }
.field input[type="color"] { width: 40px; height: 24px; padding: 0; border: 1px solid var(--line); background: none; }
.field.check input { accent-color: var(--cell); }
#stlReset { margin-top: 10px; width: 100%; font-size: 13px; }

/* Game over */
.over {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(400px, calc(100% - 32px));
  padding: 24px;
  background: rgba(12, 12, 24, 0.92);
  border: 1px solid var(--line);
  border-top: 4px solid var(--bad);
  border-radius: 6px;
}
.over h2 { margin: 0 0 6px; font: 800 30px var(--mono); letter-spacing: -0.02em; color: var(--ink); text-transform: none; }
.over p { margin: 0; color: var(--dim); }
.over .score { margin-top: 12px; color: var(--ink); }
.over .score strong { font: 800 26px var(--mono); }

.dropzone {
  position: fixed;
  inset: 12px;
  display: grid;
  place-items: center;
  border: 3px dashed var(--cell);
  border-radius: 12px;
  background: rgba(12, 12, 24, 0.8);
  font: 700 28px var(--mono);
  pointer-events: none;
}

.fatal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: #14121f;
  font-size: 18px;
  text-align: center;
}

@keyframes throb { from { opacity: 1; } to { opacity: 0.55; } }

@media (max-width: 760px) {
  .radar { width: 110px; height: 110px; }
  .panel { width: 180px; padding: 8px 10px; }
  .big { font-size: 22px; }
  .hintbar { display: none; }
  .center { top: 130px; }
  .menu { padding: 20px 16px; background: rgba(12, 12, 24, 0.94); }
}

@media (prefers-reduced-motion: reduce) {
  .prompt.alarm { animation: none; }
}