:root {
  color-scheme: light;
  --ink: #17201d;
  --muted: #5d6762;
  --line: #cfd8d2;
  --paper: #f8faf7;
  --panel: #ffffff;
  --signal: #2f8f83;
  --warn: #b95f35;
  --violet: #6957b8;
  --gold: #b78924;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f4f7f2 0%, #eef4f5 100%);
}

a {
  color: #155f8e;
}

.shell {
  width: min(1180px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 18px 0 26px;
}

.topbar,
.hub-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.brand h1,
.hub-top h1 {
  margin: 0;
  font-size: clamp(24px, 4vw, 44px);
  line-height: 1;
  letter-spacing: 0;
}

.brand p,
.hub-top p {
  margin: 7px 0 0;
  color: var(--muted);
  max-width: 720px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 16px;
  align-items: stretch;
}

.viewport,
.side,
.hub-card,
.hold-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.viewport {
  min-height: 560px;
  padding: 14px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 12px;
}

canvas {
  width: 100%;
  min-height: 360px;
  aspect-ratio: 16 / 9;
  border: 1px solid #d8e0db;
  border-radius: 6px;
  background: #f6f8f5;
}

.meter-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.meter {
  border: 1px solid #d9e0dc;
  border-radius: 6px;
  padding: 9px;
  background: #fbfcfa;
}

.meter span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.meter strong {
  display: block;
  margin-top: 4px;
  font-size: 20px;
  line-height: 1.1;
}

.side {
  padding: 14px;
  display: grid;
  gap: 12px;
  align-content: start;
}

.visitor {
  padding: 13px;
  border: 1px solid #d9e0dc;
  border-radius: 6px;
  background: #fbfcfa;
}

.visitor h2 {
  margin: 0 0 8px;
  font-size: 21px;
}

.visitor p {
  margin: 5px 0;
  color: var(--muted);
}

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

button,
.entry {
  min-height: 42px;
  border: 1px solid #bcc8c1;
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 650;
  cursor: pointer;
}

button:hover,
.entry:hover {
  border-color: #6e8176;
  background: #f6fbf8;
}

button:disabled {
  color: #9da8a1;
  background: #f2f4f1;
  cursor: not-allowed;
}

.log {
  height: 170px;
  overflow: auto;
  padding: 10px;
  border: 1px solid #d9e0dc;
  border-radius: 6px;
  background: #fbfcfa;
  font-size: 13px;
  color: #33403a;
}

.log div {
  padding: 4px 0;
  border-bottom: 1px solid #edf1ee;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.hub-card,
.hold-panel {
  padding: 16px;
}

.hub-card h2,
.hold-panel h1 {
  margin: 0 0 8px;
  font-size: 20px;
}

.hub-card p,
.hold-panel p {
  color: var(--muted);
}

.entry {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 13px;
  margin-top: 8px;
  text-decoration: none;
}

.hold-panel {
  width: min(760px, calc(100vw - 28px));
  margin: 9vh auto 0;
}

@media (max-width: 840px) {
  .game-layout,
  .hub-grid,
  .meter-row {
    grid-template-columns: 1fr;
  }

  .topbar,
  .hub-top {
    align-items: flex-start;
    flex-direction: column;
  }
}