:root {
  color-scheme: dark;
  --bg: #151719;
  --panel: #252a31;
  --line: rgba(255, 255, 255, 0.14);
  --text: #f6f1e6;
  --muted: #bac1c8;
  --gold: #f0c86a;
  --green: #5cc887;
  --red: #ee5d50;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 0%, rgba(240, 200, 106, 0.18), transparent 30%),
    linear-gradient(135deg, #1b211c, #121317);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

.shell {
  width: min(1240px, 100vw);
  height: min(820px, 100dvh);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 10px;
  padding: 12px;
  position: relative;
}

.topbar,
.bottombar,
.build-menu {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(37, 42, 49, 0.94);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.28);
}

.topbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: 10px;
  padding: 10px;
}

.topbar div {
  min-width: 0;
}

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

.topbar strong {
  display: block;
  margin-top: 2px;
  font-size: clamp(20px, 4vw, 30px);
  line-height: 1;
}

canvas {
  width: 100%;
  height: 100%;
  min-height: 460px;
  border: 2px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #334e36;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.38);
}

.bottombar {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  color: var(--muted);
}

button {
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  padding: 0 14px;
  background: var(--gold);
  color: #171717;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
}

.build-menu {
  position: absolute;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(4, 92px);
  gap: 8px;
  padding: 8px;
  transform: translate(-50%, -112%);
}

.build-menu.hidden,
.build-menu button.hidden {
  display: none;
}

.build-menu button {
  height: 72px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 8px;
  background: #313842;
  color: var(--text);
  border: 1px solid var(--line);
}

.build-menu b,
.build-menu span {
  display: block;
}

.build-menu span {
  color: var(--gold);
  font-size: 12px;
}

.build-menu .sell-btn {
  background: rgba(238, 93, 80, 0.22);
  border-color: rgba(238, 93, 80, 0.72);
}

.build-menu .sell-btn span {
  color: #ffb8b1;
}

@media (max-width: 780px) {
  body {
    overflow: auto;
  }

  .shell {
    height: auto;
    min-height: 100dvh;
  }

  .topbar {
    grid-template-columns: repeat(2, 1fr);
  }

  canvas {
    min-height: 520px;
  }

  .build-menu {
    grid-template-columns: repeat(2, 100px);
  }
}