:root {
  --bg: #070d18;
  --panel: #0e1828;
  --panel-2: #142236;
  --line: #233650;
  --text: #dfe8f5;
  --muted: #8ea2bd;
  --green: #7dff9a;
  --amber: #ffcf6b;
  --red: #ff6b6b;
  --filter: #5fb3ff;
  --transform: #c18cff;
  --router: #ffb35f;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  min-height: 100vh;
}
body.is-dragging { cursor: grabbing; user-select: none; }
[hidden] { display: none !important; }
h1, h2 { margin: 0 0 0.5em; letter-spacing: 0.02em; }
h2 { font-size: 0.85rem; text-transform: uppercase; color: var(--muted); }

button {
  font: inherit;
  color: #07130b;
  background: var(--green);
  border: 0;
  border-radius: 6px;
  padding: 0.55em 1.1em;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { background: #3a4a5c; color: var(--muted); cursor: default; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
button.link { background: none; color: var(--muted); padding: 0 0.3em; font-weight: 400; text-decoration: underline; }

/* ---------------------------------------------------------------- login */

#login {
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: flex-start;
  padding: 10vh 16px 32px;
  flex-wrap: wrap;
}
.login-card, .board-card, .rules {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
}
.login-card { max-width: 440px; width: 100%; }
.login-card h1 { font-family: var(--mono); color: var(--green); font-size: 2rem; }
.lede { color: var(--muted); }
label { display: block; font-size: 0.8rem; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.row { display: flex; gap: 8px; }
input {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.55em 0.75em;
}
.error { color: var(--red); min-height: 1.4em; margin: 6px 0 0; }

/* ---------------------------------------------------------------- leaderboard */

.leaderboard { margin: 0; padding: 0; list-style: none; counter-reset: rank; font-family: var(--mono); font-size: 0.9rem; }
.leaderboard li {
  counter-increment: rank;
  display: grid;
  grid-template-columns: 2.2em 1fr auto;
  padding: 3px 0;
  border-bottom: 1px dashed var(--line);
}
.leaderboard li::before { content: counter(rank) "."; color: var(--muted); }
.leaderboard li span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.leaderboard li.me { color: var(--green); }
.leaderboard li.empty { display: block; color: var(--muted); border: 0; }
.leaderboard li.empty::before { content: none; }

/* ---------------------------------------------------------------- game */

.game-screen { max-width: 1320px; margin: 0 auto; padding: 12px 16px 32px; }
.hud {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-bottom: 12px;
  font-family: var(--mono);
}
.hud-label { display: block; font-size: 0.7rem; text-transform: uppercase; color: var(--muted); }
.hud b { font-size: 1.25rem; }
.hud-who { margin-right: auto; }
.hud-green { color: var(--green); }
.hud-amber { color: var(--amber); }
#g-hud-hp.low { color: var(--red); }
#g-hud-credits { display: inline-block; }
#g-hud-credits.gain { animation: credit-gain 0.45s ease-out; }
@keyframes credit-gain { 30% { transform: scale(1.3); text-shadow: 0 0 10px var(--amber); } }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 16px; align-items: start; }
.side { display: grid; gap: 16px; }
.rules ul { margin: 0 0 0.6em; padding-left: 1.1em; }
.rules p { color: var(--muted); margin: 0; font-size: 0.9rem; }

.sky-wrap {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  /* Keep the sky short enough that the pipeline builder stays on screen. */
  max-width: max(520px, calc((100vh - 330px) * 16 / 9));
  margin: 0 auto;
}
.sky-wrap canvas { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; }
.phase {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: min(90%, 560px);
  text-align: center;
  background: rgba(7, 13, 24, 0.72);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
  pointer-events: none;
}
.phase b { display: block; font-family: var(--mono); color: var(--amber); }
.phase span { font-size: 0.85rem; color: var(--text); }
.phase-new { animation: phase-in 0.6s ease-out; }
@keyframes phase-in { from { transform: translate(-50%, -8px); opacity: 0; } }

/* ---------------------------------------------------------------- builder */

.panel {
  margin-top: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
}
.chain { display: flex; align-items: center; overflow-x: auto; padding: 4px 2px 8px; }
.wire {
  flex: 1 0 14px;
  height: 3px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}
.wire.pulse::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 10px;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: packet 0.25s linear forwards;
}
@keyframes packet { from { left: -10px; } to { left: 100%; } }

.node, .slot {
  flex: 0 0 auto;
  width: 112px;
  height: 66px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.node {
  flex-direction: column;
  border: 2px solid;
  font-family: var(--mono);
  width: 84px;
}
.node-radar { border-color: var(--green); color: var(--green); }
.node-flak { border-color: var(--amber); color: var(--amber); }
.slot { border: 2px dashed var(--line); background: var(--bg); }
.slot.filled { border-style: solid; border-color: transparent; background: none; }
.slot.over { border-color: var(--green); background: rgba(125, 255, 154, 0.08); }
.slot-hint { color: #3b5272; font-size: 0.75rem; text-transform: uppercase; }

.flash-pass { animation: flash-pass 0.35s ease-out; }
.flash-drop { animation: flash-drop 0.5s ease-out; }
@keyframes flash-pass { from { box-shadow: 0 0 0 3px var(--green), 0 0 18px var(--green); } }
@keyframes flash-drop { from { box-shadow: 0 0 0 3px var(--red), 0 0 18px var(--red); } }

.block {
  --c: var(--filter);
  width: 108px;
  height: 62px;
  padding: 4px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  color: var(--text);
  background: var(--panel-2);
  border: 2px solid var(--c);
  border-radius: 8px;
  cursor: grab;
  touch-action: none;
  user-select: none;
  font-weight: 500;
}
.block-transform { --c: var(--transform); }
.block-router { --c: var(--router); }
.block-tag { font-family: var(--mono); font-size: 0.62rem; text-transform: uppercase; color: var(--c, var(--muted)); }
.node .block-tag { color: inherit; opacity: 0.75; }
.block-label { font-size: 0.85rem; line-height: 1.15; text-align: center; }
.block-lat { font-family: var(--mono); font-size: 0.65rem; color: var(--muted); }
.block.used { opacity: 0.3; cursor: not-allowed; }
.block.dragging { opacity: 0.35; }
.block.ghost {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10;
  pointer-events: none;
  opacity: 0.92;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.55);
}

.builder-foot { display: flex; gap: 16px; align-items: flex-start; flex-wrap: wrap; margin-top: 8px; }
.palette { display: flex; gap: 8px; flex-wrap: wrap; }
.builder-side { flex: 1 1 220px; font-size: 0.88rem; }
.builder-side p { margin: 0 0 6px; }
.pipe-stats { font-family: var(--mono); color: var(--muted); }
.pipe-stats b { color: var(--text); }
.warn { color: var(--amber); }
.block-info { color: var(--muted); }
.block-info b { color: var(--text); }

/* ---------------------------------------------------------------- end dialog */

dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  width: min(92vw, 380px);
}
dialog::backdrop { background: rgba(3, 6, 12, 0.7); }
.end-score { font-family: var(--mono); font-size: 1.1rem; margin: 0 0 12px; }
#end-score { font-size: 2.4rem; color: var(--green); }
#end-breakdown { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; margin: 0 0 12px; font-family: var(--mono); font-size: 0.9rem; }
#end-breakdown dt { color: var(--muted); }
#end-breakdown dd { margin: 0; text-align: right; }
#end-result { min-height: 1.4em; }

@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .node, .slot { width: 92px; height: 60px; }
  .block { width: 88px; height: 56px; }
  .node { width: 70px; }
}

button.danger { background: var(--red); color: #1a0606; }

/* ---------------------------------------------------------------- map select */

#maps { max-width: 1100px; margin: 0 auto; padding: 6vh 16px 32px; }
.maps-head h1 { font-family: var(--mono); color: var(--green); }
.maps-head p { color: var(--muted); margin: 0 0 20px; }
.maps-head b { color: var(--text); }
.map-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.map-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 20px 20px;
  overflow: hidden;
}
.map-card h2 { font-size: 1.3rem; text-transform: none; color: var(--text); margin-top: 16px; }
.map-card h3 { font-size: 0.75rem; text-transform: uppercase; color: var(--muted); margin: 20px 0 6px; }
.map-card p { color: var(--muted); }
.map-art { height: 120px; margin: 0 -20px; }
.map-air .map-art {
  background:
    linear-gradient(160deg, transparent 48%, rgba(125, 255, 154, 0.35) 50%, transparent 53%),
    radial-gradient(circle at 70% 35%, #c4513f 0 5px, transparent 6px),
    radial-gradient(circle at 40% 25%, #5d8fd6 0 5px, transparent 6px),
    linear-gradient(#060d1c, #2c4a6e);
}
.map-ground .map-art {
  background:
    radial-gradient(circle at 30% 60%, rgba(255, 211, 95, 0.25) 0 40px, transparent 41px),
    radial-gradient(circle at 62% 40%, #c4513f 0 4px, transparent 5px),
    radial-gradient(circle at 50% 70%, #c4513f 0 4px, transparent 5px),
    linear-gradient(170deg, transparent 40%, #7d6c4d 41% 47%, transparent 48%),
    linear-gradient(10deg, transparent 55%, #7d6c4d 56% 62%, transparent 63%),
    #2f4a2c;
}

/* ---------------------------------------------------------------- ground */

.sensor-bar { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 6px 12px; margin-bottom: 8px; }
.sensor-btn { padding: 0.4em 0.8em; font-size: 0.9rem; }
.sensor-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.graph-label { font-size: 0.75rem; text-transform: uppercase; color: var(--muted); }
.sensor-btn {
  --c: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--panel-2);
  color: var(--text);
  border: 2px solid var(--c);
  font-weight: 500;
}
.sensor-btn.active { background: var(--c); color: #0a0f18; }
.sensor-btn:disabled { opacity: 0.4; background: var(--panel-2); color: var(--muted); }
.sensor-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--c); }
.sensor-btn.active .sensor-dot { background: #0a0f18; }
.sensor-cost { font-family: var(--mono); font-size: 0.8rem; opacity: 0.8; }
.sensor-cost::before { content: "◈ "; }
.kind-acoustic { --c: #5fd4ff; }
.kind-camera { --c: #ffd35f; }
.kind-drone { --c: #c99bff; }
.kind-mortar, .kind-howitzer { --c: #ffcf6b; }
.kind-attackDrone { --c: #ff8c5a; }

#g-map.placing { cursor: crosshair; }
.map-wrap { max-width: max(520px, calc((100vh - 380px) * 16 / 9)); }
#g-message {
  top: auto;
  bottom: 8px;
  left: 8px;
  transform: none;
  width: auto;
  max-width: 60%;
  text-align: left;
  font-size: 0.85rem;
}
#g-message.phase-new { animation: none; }
.sensor-pop {
  position: absolute;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(7, 13, 24, 0.92);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 0.85rem;
}
.sensor-pop button { padding: 0.3em 0.7em; font-size: 0.8rem; }

.graph-panel { padding: 10px 12px 12px; }
.graph-toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.graph-palette { display: flex; gap: 6px; flex-wrap: wrap; }
.pblock {
  --c: var(--filter);
  background: var(--panel-2);
  color: var(--text);
  border: 2px solid var(--c);
  padding: 0.35em 0.7em;
  font-weight: 500;
  font-size: 0.85rem;
  touch-action: none;
  cursor: grab;
}
.pblock.ghost { position: fixed; top: 0; left: 0; z-index: 10; pointer-events: none; box-shadow: 0 10px 28px rgba(0, 0, 0, 0.55); }
.pblock.block-transform { --c: var(--transform); }
.pblock.block-router { --c: var(--router); }
.pblock.block-join { --c: #7dffd9; }
.graph-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background:
  radial-gradient(circle, #1a2a40 1px, transparent 1.2px) 0 0 / 20px 20px, var(--bg); }
.graph { position: relative; margin: 0 auto; }
.graph-wires { position: absolute; inset: 0; overflow: visible; }
.wire { fill: none; stroke: #3d5a80; stroke-width: 2.5; pointer-events: none; }
.wire-hit { fill: none; stroke: transparent; stroke-width: 14; pointer-events: stroke; cursor: pointer; }
.wire-group:hover .wire { stroke: var(--red); stroke-dasharray: 6 4; }
.wire.hot { animation: wire-hot 0.3s ease-out; }
@keyframes wire-hot { from { stroke: var(--green); stroke-width: 4; } }
.wire-temp { stroke: var(--green); stroke-dasharray: 5 4; }
body.is-wiring, body.is-wiring * { cursor: crosshair !important; }

.gnode {
  --c: var(--muted);
  position: absolute;
  width: 132px;
  height: 74px;
  background: var(--panel-2);
  border: 2px solid var(--c);
  border-radius: 8px;
  padding: 0 8px 4px;
  user-select: none;
  font-size: 0.82rem;
}
.gnode-gun { --c: var(--amber); }
.gnode-gun.gun-attackDrone { --c: #ff8c5a; }
.gnode-block.block-filter { --c: var(--filter); }
.gnode-block.block-transform { --c: var(--transform); }
.gnode-block.block-router { --c: var(--router); }
.gnode-block.pblock.block-transform { --c: var(--transform); }
.pblock.block-router { --c: var(--router); }
.pblock.block-join { --c: #7dffd9; }
.gnode.idle { border-style: dashed; opacity: 0.75; }
.gnode.moving { z-index: 3; box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5); }
.gnode.wire-target { box-shadow: 0 0 0 3px var(--green); }
.gnode.wire-bad { box-shadow: 0 0 0 3px var(--red); }
.gnode-head { display: flex; justify-content: space-between; align-items: center; height: 20px; cursor: grab; }
.gnode-tag { font-family: var(--mono); font-size: 0.6rem; text-transform: uppercase; color: var(--c); }
.gnode-x { background: none; color: var(--muted); padding: 0 2px; font-size: 1rem; line-height: 1; }
.gnode-x:hover { color: var(--red); }
.gnode-name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding-right: 10px; }
.gnode-meta { font-family: var(--mono); font-size: 0.62rem; color: var(--muted); white-space: nowrap; }
.port {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--c);
  transform: translateY(-50%);
}
.port-in { left: -8px; top: 50%; }
.port-out { right: -8px; cursor: crosshair; touch-action: none; }
.port-out:hover { background: var(--c); }
.port-out i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--c);
  pointer-events: none;
}
.gnode-load {
  position: relative;
  height: 10px;
  margin-top: 3px;
  background: var(--bg);
  border-radius: 3px;
  overflow: hidden;
}
.gnode-load i { position: absolute; inset: 0 auto 0 0; width: 0; background: rgba(125, 255, 154, 0.45); transition: width 0.25s; }
.gnode-load.hot i { background: rgba(255, 207, 107, 0.7); }
.gnode-load.over i { background: rgba(255, 107, 107, 0.85); }
.gnode.cooling { border-style: dashed; animation: cooling 0.8s ease-in-out infinite alternate; }
@keyframes cooling { to { box-shadow: 0 0 14px rgba(255, 107, 107, 0.6); } }
.gnode.cooling .gnode-load i {
  background: repeating-linear-gradient(-45deg, rgba(255, 107, 107, 0.85) 0 6px, rgba(120, 30, 30, 0.85) 6px 12px);
}
.gnode-load span {
  position: absolute;
  inset: 0;
  font-family: var(--mono);
  font-size: 0.55rem;
  line-height: 10px;
  text-align: center;
  color: var(--text);
}
.graph-info { color: var(--muted); font-size: 0.88rem; margin: 8px 0 0; min-height: 2.6em; }
.graph-info b { color: var(--text); }