* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0e1626;
  --panel: #16223a;
  --panel-2: #1d2c49;
  --accent: #4ea3ff;
  --text: #e8eefc;
  --muted: #9fb0cc;
  --good: #5fd38a;
  --bad: #ff6b6b;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

/* ---- HUD ---- */
#hud {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 14px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 2px 8px rgba(0,0,0,0.35);
  z-index: 10;
}
.hud-group { display: flex; flex-wrap: wrap; gap: 14px; }
.hud-item {
  font-size: 14px;
  color: var(--muted);
  white-space: nowrap;
}
.hud-item b { color: var(--text); font-variant-numeric: tabular-nums; }

/* ---- Game canvas ---- */
#game-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}
#game-container canvas { display: block; }

/* ---- Toolbar ---- */
#toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 6px;
  padding: 8px 10px;
  background: linear-gradient(0deg, var(--panel-2), var(--panel));
  border-top: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 -2px 8px rgba(0,0,0,0.35);
  overflow-x: auto;
  z-index: 10;
}
.tool {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  padding: 6px 8px;
  background: var(--panel-2);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  cursor: pointer;
  transition: transform .08s, border-color .15s, background .15s;
}
.tool:hover { border-color: var(--accent); }
.tool:active { transform: scale(0.95); }
.tool.active {
  border-color: var(--accent);
  background: rgba(78,163,255,0.18);
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.tool .ic { font-size: 22px; line-height: 1; }
.tool .nm { font-size: 11px; margin-top: 3px; color: var(--text); }
.tool .pr { font-size: 10px; color: var(--muted); }
.tool.disabled { opacity: 0.4; pointer-events: none; }

.sep { width: 1px; align-self: stretch; background: rgba(255,255,255,0.1); margin: 2px 2px; }

/* ---- Toast ---- */
#toast {
  position: fixed;
  left: 50%;
  bottom: 96px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(10,16,30,0.95);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s, transform .25s;
  z-index: 50;
  max-width: 80vw;
  text-align: center;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
#toast.bad { border-color: var(--bad); }
#toast.good { border-color: var(--good); }