:root {
  --bg: #0b0e11;
  --panel: #161b22;
  --text: #f0f2f5;
  --muted: #8b949e;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #00ffa3;
  --accent-2: #ff6b4a;
  --p1: #5b9dff;
  --p2: #ff6b4a;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
#app {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr;
}
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 14, 17, 0.92);
}
.brand {
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
}
.brand span { color: var(--accent); }
.hud { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.pill {
  display: inline-flex;
  gap: 0.35rem;
  align-items: baseline;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
}
.pill b {
  color: var(--text);
  font-family: var(--mono);
  font-weight: 700;
}
.pill.credits b { color: var(--accent); }
.stage {
  display: grid;
  grid-template-columns: 1fr minmax(240px, 300px);
  gap: 0;
  min-height: 0;
}
#game {
  width: 100%;
  height: 100%;
  display: block;
  background: #0a1018;
  touch-action: none;
}
.controls {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1rem;
  border-left: 1px solid var(--line);
  background: var(--panel);
}
.controls[hidden] { display: none; }
.tank-chip {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 0.8rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
}
.tank-chip .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--p1);
  box-shadow: 0 0 12px currentColor;
}
.tank-chip .hp {
  margin-left: auto;
  font-family: var(--mono);
  font-weight: 700;
  color: var(--accent);
}
.slider {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
}
.slider b { color: var(--text); font-family: var(--mono); }
.slider input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}
.weapons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
}
.weapon, .fire, .primary, .ghost, .shop-btn {
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  cursor: pointer;
  padding: 0.65rem 0.5rem;
  font-weight: 700;
}
.weapon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  font-size: 0.78rem;
  line-height: 1.15;
  min-height: 3.1rem;
}
.weapon .ammo {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  font-weight: 700;
}
.weapon.active {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
}
.weapon.active .ammo { color: var(--accent); }
.weapon.empty {
  opacity: 0.4;
}
.weapon.empty.active {
  opacity: 0.55;
}
.control-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem;
}
.shop-btn {
  padding: 0.9rem 0.85rem;
  white-space: nowrap;
}
.shop-btn:hover { border-color: rgba(255,255,255,0.25); }
.fire, .primary {
  background: var(--accent);
  color: #0b0e11;
  border-color: transparent;
  padding: 0.9rem 1rem;
  font-size: 1rem;
}
.fire:disabled, .shop-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.ghost:hover, .weapon:hover { border-color: rgba(255,255,255,0.25); }
.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.4;
}
.overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 1rem;
  background:
    radial-gradient(700px 400px at 20% 0%, rgba(0,255,163,0.08), transparent 55%),
    radial-gradient(600px 360px at 90% 20%, rgba(255,107,74,0.08), transparent 50%),
    rgba(5, 7, 10, 0.82);
  backdrop-filter: blur(8px);
}
.overlay.hidden { display: none; }
#shop { z-index: 30; }
.panel {
  width: min(460px, 100%);
  padding: 1.5rem 1.4rem 1.35rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(22, 27, 34, 0.96);
  box-shadow: 0 24px 60px rgba(0,0,0,0.45);
}
.shop-panel {
  width: min(520px, 100%);
  max-height: min(90dvh, 720px);
  overflow: auto;
}
.eyebrow {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.panel h1 {
  margin: 0;
  font-size: clamp(1.8rem, 5vw, 2.4rem);
  letter-spacing: -0.04em;
  line-height: 1;
}
.lede {
  margin: 0.75rem 0 0;
  color: var(--muted);
  line-height: 1.45;
}
.lede b {
  color: var(--accent);
  font-family: var(--mono);
}
.help {
  margin: 1rem 0 0;
  padding: 0 0 0 1.1rem;
  color: var(--text);
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
}
.modes {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.25rem;
}
.title-games {
  margin: 1rem 0 0;
  text-align: center;
  font-size: 0.9rem;
}
.title-games a {
  color: var(--muted);
  text-decoration: none;
}
.title-games a:hover {
  color: var(--accent);
}
.shop-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 1rem;
}
.shop-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.55rem 0.75rem;
  align-items: center;
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
}
.shop-item-info {
  display: grid;
  gap: 0.2rem;
  min-width: 0;
}
.shop-item-info strong {
  font-size: 0.95rem;
}
.shop-item-info span {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.35;
}
.shop-item-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.35rem;
}
.shop-price {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent);
}
.shop-owned {
  color: var(--muted);
  font-size: 0.72rem;
  font-family: var(--mono);
}
.shop-buy {
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
}
.shop-buy:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.shop-buy:not(:disabled):hover {
  background: color-mix(in srgb, var(--accent) 28%, transparent);
}
@media (max-width: 860px) {
  .stage { grid-template-columns: 1fr; grid-template-rows: minmax(280px, 1fr) auto; }
  .controls {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .hint { display: none; }
}