:root {
  --bg: #05070d;
  --panel: rgba(9, 15, 27, 0.94);
  --panel-2: rgba(20, 31, 50, 0.9);
  --line: rgba(95, 227, 208, 0.16);
  --line-2: rgba(160, 190, 220, 0.14);
  --text: #dce7f3;
  --muted: #8397ad;
  --dim: #56677c;
  --teal: #5fe3d0;
  --teal-2: #2bb7a4;
  --amber: #ffb547;
  --red: #ff6b6b;
  --water: #7cc8ff;
  --iron: #d58a64;
  --silicates: #d9c48f;
  --metals: #b8c4d2;
  --oxygen: #9fe7ff;
  --hydrogen: #c7a6ff;
  --glass: #8ff0d4;
  --radius: 14px;
  --tabs-h: 58px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); }
body {
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}
button, select, input { font: inherit; color: inherit; }
[hidden] { display: none !important; }

#app { position: fixed; inset: 0; overflow: hidden; }
#stage { position: absolute; inset: 0; touch-action: none; }
#stage canvas { display: block; }

/* ---- resource bar ---- */
#bar {
  position: absolute; top: 0; left: 0; right: 0; z-index: 5;
  padding: calc(var(--safe-t) + 8px) 10px 14px;
  display: flex; flex-direction: column; gap: 5px;
  background: linear-gradient(to bottom, rgba(5, 7, 13, 0.92) 55%, rgba(5, 7, 13, 0));
  pointer-events: none;
}
#bar > * { pointer-events: auto; }
.bar-row { display: flex; gap: 6px; align-items: flex-start; }
.res.small { padding: 3px 7px 4px; border-radius: 8px; }
.res.small .val { font-size: 12px; }
.res.small .cap { font-size: 10px; }
.res.small .meter { margin-top: 3px; height: 2px; }
.power-chip {
  flex: none; background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 8px;
  padding: 3px 8px; min-width: 52px; text-align: center; cursor: pointer; white-space: nowrap;
}
.power-chip b { font: 600 12px var(--mono); color: var(--hydrogen); }
.power-chip span { font: 10px var(--mono); color: var(--dim); }
.power-chip.warn { border-color: rgba(255, 181, 71, .6); }
.kind { font: 600 10px var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 2px 6px; border-radius: 6px; border: 1px solid var(--line-2); color: var(--muted); }
.kind.collector { color: var(--glass); border-color: rgba(143, 240, 212, .35); }
.kind.tug { color: var(--hydrogen); border-color: rgba(199, 166, 255, .35); }
.kv .v .up { color: var(--teal); font-size: 11px; }
.kv .v .down { color: var(--amber); font-size: 11px; }
.kv .v .dump { min-height: 22px; padding: 1px 6px; margin-left: 4px; font-size: 10.5px; border-color: rgba(255, 107, 107, .45); color: #ffb3b3; }
@media (min-width: 900px) { #bar { right: auto; width: min(760px, calc(100vw - 420px)); background: none; } }
.res {
  flex: 1 1 0; min-width: 0;
  background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 10px;
  padding: 5px 8px 6px; position: relative; overflow: hidden;
}
.res .top { display: flex; align-items: baseline; gap: 5px; white-space: nowrap; }
.res .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; align-self: center; }
.res .name { color: var(--muted); font-size: 11px; letter-spacing: .02em; overflow: hidden; text-overflow: ellipsis; }
.res .sym { color: var(--muted); font: 600 11px var(--mono); }
@media (min-width: 421px) { .res .sym { display: none; } }
.now { color: var(--amber); }
.res .val { margin-left: auto; font: 600 13px var(--mono); font-variant-numeric: tabular-nums; }
.res .cap { color: var(--dim); font: 11px var(--mono); }
.res .meter { height: 3px; margin-top: 4px; background: rgba(255,255,255,.07); border-radius: 2px; overflow: hidden; }
.res .meter i { display: block; height: 100%; border-radius: 2px; }
.res .rate { font: 10px var(--mono); color: var(--dim); margin-top: 2px; white-space: nowrap; }
.res.full { border-color: rgba(255, 107, 107, .6); }
.res.full .cap { color: var(--red); }
.fleet-chip {
  flex: none; background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 10px;
  padding: 5px 9px; text-align: center; min-width: 52px; cursor: pointer;
}
.fleet-chip b { display: block; font: 600 14px var(--mono); }
.fleet-chip span { font-size: 10px; color: var(--muted); }
.fleet-chip.warn { border-color: rgba(255, 181, 71, .6); }
.fleet-chip.warn span { color: var(--amber); }

@media (max-width: 420px) {
  .res .name { display: none; }
  .res .cap { display: none; }
  .res { padding: 5px 7px 6px; }
  .res .rate { display: none; }
}

/* ---- tabs ---- */
#tabs {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 6;
  height: calc(var(--tabs-h) + var(--safe-b)); padding-bottom: var(--safe-b);
  display: flex; background: rgba(6, 10, 18, 0.97); border-top: 1px solid var(--line);
}
#tabs button {
  flex: 1; border: 0; background: none; padding: 6px 0 4px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  color: var(--muted); font-size: 11px; letter-spacing: .03em; position: relative;
}
#tabs button svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
#tabs button.on { color: var(--teal); }
#tabs button .badge {
  position: absolute; top: 6px; left: calc(50% + 6px); min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 8px; background: var(--amber); color: #1a1204; font: 700 10px/16px var(--mono);
}

/* ---- sheet ---- */
#sheet {
  position: absolute; left: 0; right: 0; bottom: calc(var(--tabs-h) + var(--safe-b)); z-index: 4;
  max-height: min(60vh, 560px); overflow-y: auto; overscroll-behavior: contain;
  background: var(--panel); border-top: 1px solid var(--line); border-radius: 18px 18px 0 0;
  padding: 6px 14px 16px; box-shadow: 0 -10px 40px rgba(0,0,0,.5);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
#sheet .grab { width: 40px; height: 4px; border-radius: 2px; background: var(--line-2); margin: 2px auto 8px; }
@media (min-width: 900px) {
  #sheet {
    left: auto; right: 12px; top: calc(var(--bar-h, 70px) + 4px); bottom: calc(var(--tabs-h) + 12px); width: 380px; max-height: none;
    border: 1px solid var(--line); border-radius: var(--radius);
  }
  #sheet .grab { display: none; }
  #tabs { left: auto; right: 12px; bottom: 8px; width: 380px; border: 1px solid var(--line); border-radius: var(--radius); height: var(--tabs-h); padding: 0; }
}

h2 { font-size: 16px; margin: 4px 0 8px; display: flex; align-items: center; gap: 8px; }
h2 .sub { font-size: 12px; font-weight: 400; color: var(--muted); margin-left: auto; }
h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 16px 0 6px; font-weight: 600; }
p { margin: 6px 0; }
.muted { color: var(--muted); }
.dim { color: var(--dim); }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.small { font-size: 12px; }

.card {
  background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 12px;
  padding: 10px 12px; margin: 8px 0;
}
.card.stuck { border-color: rgba(255, 181, 71, .55); }
.card.bad { border-color: rgba(255, 107, 107, .6); }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.grow { flex: 1; min-width: 0; }
.alert { color: var(--amber); font-size: 12.5px; margin-top: 4px; }
.alert.red { color: var(--red); }

.btn {
  border: 1px solid var(--line-2); background: rgba(255,255,255,.04); border-radius: 10px;
  padding: 8px 12px; min-height: 38px; cursor: pointer; white-space: nowrap;
  display: inline-flex; align-items: center; gap: 6px; touch-action: manipulation;
}
.btn:hover { background: rgba(255,255,255,.08); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: rgba(95, 227, 208, .14); border-color: rgba(95, 227, 208, .5); color: #c9fff7; }
.btn.primary:hover { background: rgba(95, 227, 208, .22); }
.btn.warn { border-color: rgba(255, 107, 107, .5); color: #ffb3b3; }
.btn.small { padding: 4px 9px; min-height: 30px; font-size: 12px; border-radius: 8px; }
.btn:disabled { opacity: .42; cursor: default; transform: none; }
.btn.on { border-color: var(--teal); color: var(--teal); }
.btn .cost { font: 11px var(--mono); color: var(--muted); }
.btns { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }

.meter { height: 6px; border-radius: 3px; background: rgba(255,255,255,.07); overflow: hidden; }
.meter i { display: block; height: 100%; border-radius: 3px; background: var(--teal); }
.kv { display: grid; grid-template-columns: auto 1fr auto; gap: 6px 10px; align-items: center; font-size: 12.5px; }
.kv .k { color: var(--muted); }
.kv .v { font-family: var(--mono); text-align: right; white-space: nowrap; }

.cost { display: inline-flex; gap: 8px; font: 12px var(--mono); }
.cost .short { color: var(--red); }
.cost span::before { content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 50%; margin-right: 3px; vertical-align: 1px; background: currentColor; opacity: .9; }
.cost .water::before { background: var(--water); }
.cost .iron::before { background: var(--iron); }
.cost .silicates::before { background: var(--silicates); }
.cost .metals::before { background: var(--metals); }
.cost .oxygen::before { background: var(--oxygen); }
.cost .hydrogen::before { background: var(--hydrogen); }
.cost .glass::before { background: var(--glass); }

.drone-row { display: flex; gap: 10px; align-items: center; cursor: pointer; }
.drone-row .tag { font: 600 13px var(--mono); color: var(--amber); width: 44px; flex: none; }
.drone-row .st { font-size: 12.5px; }
.drone-row .sc { font-size: 11px; color: var(--dim); }

select, input[type=number], input[type=text] {
  background: #0d1624; border: 1px solid var(--line-2); border-radius: 8px; padding: 6px 8px; min-height: 34px;
  max-width: 100%;
}
input[type=number] { width: 76px; font-family: var(--mono); }
label.check { display: inline-flex; gap: 8px; align-items: center; cursor: pointer; }
.switch { appearance: none; width: 40px; height: 24px; border-radius: 12px; background: #1d2a3d; position: relative; cursor: pointer; border: 1px solid var(--line-2); flex: none; margin: 0; }
.switch::after { content: ''; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #8aa0b8; transition: left .15s; }
.switch:checked { background: rgba(95, 227, 208, .3); border-color: var(--teal); }
.switch:checked::after { left: 18px; background: var(--teal); }

/* ---- script editor ---- */
.steps { list-style: none; padding: 0; margin: 8px 0; counter-reset: step; }
.step {
  counter-increment: step; display: flex; gap: 6px; align-items: center; flex-wrap: wrap;
  padding: 7px 8px; border: 1px solid var(--line-2); border-radius: 10px; margin: 6px 0; background: rgba(255,255,255,.02);
}
.step::before { content: counter(step); font: 600 12px var(--mono); color: var(--dim); width: 16px; text-align: right; }
.step .op { font-weight: 600; min-width: 52px; }
.step .op.go { color: #9cc9ff; } .step .op.mine { color: var(--amber); } .step .op.return { color: var(--teal); }
.step .op.wait { color: #c3a6ff; } .step .op.repeat { color: #8fe38a; }
.step .op.fling { color: #ffcf8a; } .step .op.collect { color: var(--glass); } .step .op.if { color: #ff9ec7; }
.step .tools { margin-left: auto; display: flex; gap: 4px; }
.step .tools .btn { min-height: 30px; padding: 2px 8px; }
.step.cur { border-color: rgba(255, 181, 71, .6); }
.script-sum { font-size: 12px; color: var(--muted); }
.row.quick { gap: 6px; }
.row.quick .muted { margin-right: 2px; }

/* ---- coach (tutorial + one-time tips) ---- */
#coach {
  position: absolute; z-index: 8; left: 10px; right: 10px; top: calc(var(--safe-t) + var(--bar-h, 70px));
  max-width: 460px; margin: 0 auto;
  background: rgba(12, 22, 38, .97); border: 1px solid rgba(95, 227, 208, .45); border-radius: var(--radius);
  padding: 12px 14px; box-shadow: 0 12px 40px rgba(0,0,0,.55);
  animation: rise .25s ease-out;
}
#coach .who { display: flex; align-items: center; gap: 8px; font: 600 11px var(--mono); color: var(--teal); letter-spacing: .1em; }
#coach .who i { width: 18px; height: 18px; border-radius: 5px; background: radial-gradient(circle at 50% 45%, #bafcf2, #2bb7a4 55%, #0d2a2a 60%); box-shadow: 0 0 12px rgba(95, 227, 208, .6); }
#coach p { margin: 5px 0 0; font-size: 13.5px; line-height: 1.35; }
@media (max-width: 899px) { #coach { padding: 10px 12px; } #coach .btns { margin-top: 6px; } }
#coach .btns { justify-content: flex-end; }
#coach .skip { margin-right: auto; background: none; border: 0; color: var(--dim); cursor: pointer; font-size: 12px; padding: 0; }
@keyframes rise { from { transform: translateY(-6px); opacity: 0; } to { transform: none; opacity: 1; } }
.tut-glow { box-shadow: 0 0 0 2px var(--amber), 0 0 18px rgba(255, 181, 71, .6) !important; animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 2px var(--amber), 0 0 4px rgba(255, 181, 71, .2); } }

#hint {
  position: absolute; z-index: 7; left: 50%; transform: translateX(-50%);
  top: calc(var(--safe-t) + var(--bar-h, 70px) + 4px);
  background: rgba(255, 181, 71, .14); border: 1px solid rgba(255, 181, 71, .55); color: #ffe0ad;
  border-radius: 999px; padding: 7px 14px; font-size: 13px; white-space: nowrap; display: flex; gap: 10px; align-items: center;
}
#hint button { background: none; border: 0; color: var(--amber); cursor: pointer; font-weight: 600; padding: 0; }

#toast {
  position: absolute; z-index: 9; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--tabs-h) + var(--safe-b) + 14px);
  background: #23121a; border: 1px solid rgba(255, 107, 107, .6); color: #ffd0d0;
  padding: 8px 14px; border-radius: 10px; font-size: 13px; max-width: calc(100vw - 24px);
}
#toast.ok { background: #0e2421; border-color: rgba(95, 227, 208, .6); color: #c9fff7; }

#modal {
  position: absolute; inset: 0; z-index: 20; background: rgba(2, 4, 8, .72);
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
#modal .box {
  width: 100%; max-width: 440px; max-height: 86vh; overflow: auto;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px;
}
#modal textarea { width: 100%; min-height: 120px; background: #0d1624; border: 1px solid var(--line-2); border-radius: 8px; color: var(--text); font: 11px var(--mono); padding: 8px; }

.log-e { display: flex; gap: 10px; padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,.04); font-size: 13px; }
.log-e .t { font: 11px var(--mono); color: var(--dim); flex: none; width: 50px; padding-top: 2px; }
.log-e.ai .x { color: #cfe9ff; }
.log-e.event .x { color: var(--muted); }
.log-e.warn .x { color: var(--amber); }
.log-e.signal .x { color: #b6a8ff; font-style: italic; }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 11px; color: var(--muted); margin: 4px 0 8px; }
.legend i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 4px; vertical-align: 0; }

.zoomctl { position: absolute; z-index: 3; right: 10px; display: flex; flex-direction: column; gap: 6px; bottom: calc(var(--tabs-h) + var(--safe-b) + 12px); }
.zoomctl button { width: 38px; height: 38px; border-radius: 10px; background: var(--panel-2); border: 1px solid var(--line-2); cursor: pointer; font-size: 18px; line-height: 1; }
@media (min-width: 900px) { .zoomctl { right: 404px; bottom: 16px; } }