:root {
  color-scheme: dark;
  --bg: #070a0c;
  --panel: #0d1214;
  --panel-strong: #12191c;
  --ink: #e7f0ec;
  --muted: #8fa19d;
  --dim: #52605e;
  --line: #203033;
  --line-hot: #1f5d5d;
  --signal: #47e0c3;
  --warning: #d5a649;
  --danger: #d76f5f;
  --blue: #83a8c6;
  --shadow: rgba(0, 0, 0, 0.35);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(71, 224, 195, 0.07), transparent 34rem),
    radial-gradient(circle at 80% 0%, rgba(131, 168, 198, 0.12), transparent 28rem),
    var(--bg);
  color: var(--ink);
}

button,
a {
  font: inherit;
}

.corebound-shell {
  width: min(1180px, calc(100vw - 24px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px 0 22px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 14px;
}

.topline {
  display: grid;
  grid-template-columns: minmax(116px, 1fr) auto minmax(116px, 1fr);
  align-items: end;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(13, 18, 20, 0.88);
  box-shadow: 0 18px 60px var(--shadow);
  padding: 14px;
}

.backlink {
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0;
}

.backlink:focus-visible,
.backlink:hover {
  color: var(--signal);
}

.identity {
  text-align: center;
}

.eyebrow,
.run-state,
.readout span,
.ledger-head span {
  display: block;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0;
}

h1 {
  margin: 2px 0 0;
  font-size: clamp(1.7rem, 4vw, 3.8rem);
  line-height: 0.95;
  letter-spacing: 0;
  font-weight: 600;
}

.run-state {
  justify-self: end;
  border: 1px solid var(--line-hot);
  border-radius: 4px;
  color: var(--signal);
  padding: 7px 9px;
  background: rgba(71, 224, 195, 0.06);
}

.playfield {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 14px;
  align-items: stretch;
}

.viewport-frame,
.hud {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(13, 18, 20, 0.9);
  box-shadow: 0 18px 60px var(--shadow);
}

.viewport-frame {
  min-height: 420px;
  display: grid;
  padding: 10px;
  position: relative;
  overflow: hidden;
}

.viewport-frame::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(71, 224, 195, 0.16);
  pointer-events: none;
}

#corebound-canvas {
  width: 100%;
  height: 100%;
  min-height: 420px;
  display: block;
  background: #050708;
}

.hud {
  min-width: 0;
  padding: 12px;
  display: grid;
  grid-template-rows: auto auto auto auto auto minmax(150px, 1fr) auto auto;
  gap: 12px;
}

.meter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.readout,
.resource-ledger,
.contract-panel,
.archive-panel,
.facility-panel,
.surface-panel,
.signal-log {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel-strong);
}

.readout {
  min-height: 74px;
  padding: 10px;
  display: grid;
  align-content: space-between;
}

.readout strong {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 600;
  color: var(--ink);
}

.resource-ledger,
.contract-panel,
.archive-panel,
.facility-panel,
.surface-panel {
  min-height: 150px;
  padding: 10px;
  overflow: hidden;
}

.contract-panel,
.archive-panel,
.facility-panel {
  min-height: 0;
}

.surface-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 9px;
}

.ledger-head,
.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: baseline;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
}

.ledger-head strong,
.panel-head strong {
  color: var(--signal);
  font-size: 0.78rem;
  font-weight: 600;
}

.panel-head span {
  display: block;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0;
}

.resource-bank {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  padding: 8px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

#ore-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  gap: 6px;
}

#ore-list li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 0.78rem;
}

#ore-list strong {
  color: var(--ink);
  font-weight: 500;
}

.objective-progress {
  margin: 8px 0;
  color: var(--blue);
  font-size: 0.76rem;
  line-height: 1.35;
}

#contract-list,
#archive-list,
#utility-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.contract-row,
.archive-row,
.utility-row {
  display: grid;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 7px;
  background: rgba(7, 10, 12, 0.36);
}

.contract-row {
  grid-template-columns: minmax(0, 1fr) 68px;
  align-items: center;
}

.utility-row {
  grid-template-columns: minmax(0, 1fr) 64px;
  align-items: center;
}

.contract-row.active,
.archive-row.unlocked,
.utility-row.ready {
  border-color: rgba(71, 224, 195, 0.34);
}

.contract-row.complete {
  border-color: rgba(131, 168, 198, 0.32);
}

.contract-row div,
.archive-row div,
.utility-row div {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.contract-row span,
.contract-row small,
.archive-row span,
.archive-row small,
.utility-row span,
.utility-row small {
  color: var(--muted);
  font-size: 0.66rem;
  text-transform: uppercase;
}

.contract-row strong,
.archive-row strong,
.utility-row strong {
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 600;
}

.contract-row small,
.archive-row small,
.utility-row small {
  overflow-wrap: anywhere;
}

.contract-row button,
.utility-row button {
  min-width: 0;
  min-height: 30px;
  border: 1px solid var(--line-hot);
  border-radius: 4px;
  background: rgba(71, 224, 195, 0.07);
  color: var(--signal);
  cursor: pointer;
  text-transform: uppercase;
  font-size: 0.66rem;
  letter-spacing: 0;
}

.contract-row button:disabled,
.utility-row button:disabled {
  border-color: var(--line);
  color: var(--dim);
  background: rgba(32, 48, 51, 0.24);
  cursor: default;
}

.archive-track {
  height: 5px;
  border: 1px solid rgba(71, 224, 195, 0.24);
  background: #071011;
}

.archive-fill {
  display: block;
  height: 100%;
  width: var(--archive-progress, 0%);
  background: var(--signal);
}

.surface-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.surface-actions button,
.upgrade-row button {
  min-width: 0;
  border: 1px solid var(--line-hot);
  border-radius: 4px;
  background: rgba(71, 224, 195, 0.07);
  color: var(--signal);
  cursor: pointer;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0;
}

.surface-actions button {
  min-height: 34px;
}

.surface-actions button:disabled,
.upgrade-row button:disabled {
  border-color: var(--line);
  color: var(--dim);
  background: rgba(32, 48, 51, 0.24);
  cursor: default;
}

.surface-lists {
  min-height: 0;
  display: grid;
  gap: 7px;
  max-height: 300px;
  overflow: auto;
  scrollbar-color: var(--line-hot) transparent;
}

#upgrade-list,
#research-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.upgrade-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 74px;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 7px;
  background: rgba(7, 10, 12, 0.36);
}

.upgrade-row.installed {
  border-color: rgba(71, 224, 195, 0.34);
}

.research-row {
  border-color: rgba(131, 168, 198, 0.32);
}

.upgrade-row div {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.upgrade-row span,
.upgrade-row small {
  color: var(--muted);
  font-size: 0.66rem;
  text-transform: uppercase;
}

.upgrade-row strong {
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 600;
}

.upgrade-row small {
  overflow-wrap: anywhere;
}

.upgrade-row button {
  min-height: 30px;
}

.signal-log {
  min-height: 72px;
  padding: 10px;
  color: var(--blue);
  font-size: 0.8rem;
  line-height: 1.45;
}

.control-pad {
  display: grid;
  grid-template-columns: repeat(3, 46px);
  grid-template-rows: repeat(2, 42px);
  justify-content: center;
  gap: 6px;
}

.control-pad button {
  border: 1px solid var(--line-hot);
  border-radius: 4px;
  background: rgba(71, 224, 195, 0.07);
  color: var(--signal);
  min-width: 0;
  min-height: 0;
  cursor: pointer;
}

.control-pad button:active {
  background: rgba(71, 224, 195, 0.2);
}

.control-pad button:nth-child(1) {
  grid-column: 2;
}

.control-pad button:nth-child(2) {
  grid-column: 1;
  grid-row: 2;
}

.control-pad button:nth-child(3) {
  grid-column: 2;
  grid-row: 2;
}

.control-pad button:nth-child(4) {
  grid-column: 3;
  grid-row: 2;
}

@media (max-width: 860px) {
  .corebound-shell {
    width: min(100vw - 16px, 680px);
    padding-top: 8px;
  }

  .topline {
    grid-template-columns: 1fr;
    align-items: center;
  }

  .identity {
    text-align: left;
  }

  .run-state {
    justify-self: stretch;
    text-align: center;
  }

  .playfield {
    grid-template-columns: 1fr;
  }

  .viewport-frame,
  #corebound-canvas {
    min-height: 360px;
  }

  .hud {
    grid-template-rows: auto auto auto auto auto auto auto auto;
  }
}

@media (max-width: 520px) {
  .meter-grid {
    grid-template-columns: 1fr;
  }

  .viewport-frame,
  #corebound-canvas {
    min-height: 300px;
  }
}