:root {
  --bg: #12160f;
  --panel: #1c2418;
  --ink: #e8eedf;
  --muted: #9aa58a;
  --accent: #c4a35a;
  --danger: #c45c4a;
  --ok: #6f9e4a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
}

.app {
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 16px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.top { text-align: center; margin-bottom: 10px; }
.top h1 { margin: 0; font-size: 28px; letter-spacing: 0.02em; }
.sub { margin: 6px 0 0; color: var(--muted); font-size: 14px; }

.stage-wrap {
  width: min(92vw, 92vh, 720px);
  aspect-ratio: 1 / 1;
  background: #000;
  box-shadow: 0 0 0 2px #3a4630, 0 18px 40px rgba(0,0,0,.45);
}

#game {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
  background: #223;
}

.hud-bar {
  width: min(92vw, 92vh, 720px);
  margin-top: 10px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 8px;
  background: var(--panel);
  padding: 8px 10px;
  border-radius: 8px;
}

.stat { display: flex; flex-direction: column; gap: 2px; }
.stat .lbl { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.stat strong { font-size: 16px; }

.hp-track {
  height: 10px;
  background: #2a2018;
  border-radius: 99px;
  overflow: hidden;
  margin: 3px 0;
}
.hp-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #7a2a22, #d2c05a);
}

.shop {
  width: min(92vw, 92vh, 720px);
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.tower-btn {
  background: #24301c;
  color: var(--ink);
  border: 2px solid #3d4f30;
  border-radius: 8px;
  padding: 8px 6px;
  cursor: pointer;
  font-family: inherit;
  text-align: center;
}
.tower-btn em { display: block; color: var(--accent); font-style: normal; }
.tower-btn small { display: block; color: var(--muted); }
.tower-btn.selected { border-color: var(--accent); background: #314422; }
.tower-btn:disabled { opacity: 0.45; cursor: not-allowed; }

.hint {
  width: min(92vw, 92vh, 720px);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}
kbd {
  background: #2a3324;
  padding: 1px 5px;
  border-radius: 4px;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(8,10,6,.72);
  display: grid;
  place-items: center;
}
.overlay.hidden { display: none; }
.panel {
  background: #1b2216;
  border: 2px solid var(--accent);
  padding: 28px 32px;
  border-radius: 12px;
  text-align: center;
  max-width: 460px;
}
.overlay.lose {
  background: rgba(28, 6, 6, 0.78);
}
.overlay.lose .panel {
  background: #1a0e0c;
  border-color: #8a1c16;
}
.overlay.lose .panel h2 {
  color: #f3e6d8;
  font-size: 26px;
  margin: 0 0 10px;
}
.overlay.lose .panel p {
  color: #d7c4b0;
  line-height: 1.55;
  margin: 0;
}
.overlay.win .panel {
  border-color: #c4a35a;
}
.overlay.win .panel p {
  line-height: 1.55;
  margin: 0;
}
.score-blood {
  display: block;
  margin: 22px 0 10px;
  font-family: "Nosifer", cursive;
  font-size: 40px;
  line-height: 1.2;
  color: #e10600;
  letter-spacing: 0.02em;
  text-shadow:
    0 3px 0 #6a0000,
    0 6px 0 #3b0000,
    2px 8px 0 #7a1010,
    0 0 22px rgba(255, 0, 0, 0.45);
  transform: rotate(-2deg);
}
.score-blood.hidden { display: none; }
.panel button {
  margin-top: 12px;
  background: var(--accent);
  color: #1a1408;
  border: 0;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
}

@media (max-width: 640px) {
  .hud-bar { grid-template-columns: 1fr 1fr; }
  .shop { grid-template-columns: 1fr 1fr; }
}