:root {
  --bg: #0a0d12;
  --fg: #d8e4dc;
  --accent: #6dd28a;
  --accent-dim: #2c6a3f;
  --danger: #e15b4f;
  --warn: #e6c25a;
  --panel: rgba(10, 14, 18, 0.78);
  --panel-edge: rgba(109, 210, 138, 0.35);
  --font: ui-monospace, "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

/* body carries --font so all children inherit it.
   Setting it here (not :root) avoids the * { inherit } conflict. */
body { font-family: var(--font); }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  height: 100%;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

#stage {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
}

#game {
  display: block;
  background: var(--bg);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  max-width: 100vw;
  max-height: 100vh;
  width: 100vw;
  height: 100vh;
}

.overlay {
  position: absolute;
  inset: 0;
  background: var(--panel);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(2px);
}

.overlay h1 {
  font-size: clamp(1.4rem, 4vw, 3.5rem);
  letter-spacing: 0.25rem;
  margin: 0;
  color: var(--accent);
  text-shadow: 0 0 18px currentColor;
  line-height: 1.3;
}

.overlay h3 {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.2rem;
  color: var(--accent);
  text-transform: uppercase;
}

.overlay .tag {
  margin: 0;
  opacity: 0.75;
  font-size: 1rem;
}

.overlay .row {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  justify-content: center;
}

.picks {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

button {
  background: transparent;
  border: 1px solid var(--panel-edge);
  color: var(--fg);
  padding: 0.6rem 1rem;
  font-family: inherit;
  font-size: 0.9rem;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 120ms, border-color 120ms, color 120ms, transform 80ms;
}
button:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); border-color: var(--accent); }
button:active { transform: translateY(1px); }
button.selected { background: color-mix(in srgb, var(--accent) 22%, transparent); border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: 0.35; cursor: not-allowed; }

button.primary {
  border-color: var(--accent);
  color: var(--accent);
  padding: 0.8rem 1.6rem;
  font-size: 1rem;
}
button.primary:hover { background: color-mix(in srgb, var(--accent) 22%, transparent); }

.ctrls {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 90vw;
}
.ctrl-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.2rem;
  justify-content: center;
  font-size: 0.65rem;
  opacity: 0.75;
  letter-spacing: 0.05rem;
}
.ctrl-group { display: flex; align-items: center; gap: 0.25rem; white-space: nowrap; }
kbd {
  display: inline-block;
  border: 1.5px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  padding: 1px 5px;
  font-family: inherit;
  font-size: 0.7rem;
  line-height: 1.5;
  border-radius: 3px;
  box-shadow: 0 2px 0 color-mix(in srgb, var(--accent) 40%, transparent);
}

#achievements-list {
  max-width: 1080px;
  width: 90vw;
  margin-top: 0.5rem;
  max-height: 30vh;
  overflow-y: auto;
}
#achievements-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.2rem 1rem;
  font-size: 0.72rem;
  text-align: left;
}
#achievements-list li { opacity: 0.4; }
#achievements-list li.earned { opacity: 1; color: var(--accent); }

.hidden { display: none !important; }

#hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  font-size: 0.85rem;
}
#hud-top, #hud-bottom {
  position: absolute;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
}
#hud-top { top: 0; }
#hud-bottom { bottom: 0; }
#timer, #grenades, #level-display {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  padding: 0.4rem 0.8rem;
  letter-spacing: 0.15rem;
  color: var(--accent);
}
#health { display: flex; gap: 0.35rem; }
#health span {
  width: 18px;
  height: 18px;
  background: var(--danger);
  border: 1px solid #000;
  box-shadow: 0 0 6px color-mix(in srgb, var(--danger) 60%, transparent);
}
#health span.gone { background: color-mix(in srgb, var(--fg) 15%, var(--bg)); box-shadow: none; }
#hostage-status {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  padding: 0.4rem 0.8rem;
  color: var(--warn);
}

#toasts {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
}
.toast {
  background: var(--panel);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  letter-spacing: 0.1rem;
  animation: toastIn 220ms ease-out, toastOut 320ms ease-in 2.4s forwards;
}
@keyframes toastIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
@keyframes toastOut { to { opacity: 0; transform: translateY(-8px); } }

#endscreen #end-title.lose { color: var(--danger); text-shadow: 0 0 18px currentColor; }
#end-achievements { list-style: none; padding: 0; color: var(--accent); }
#end-achievements li.ach-head {
  color: var(--warn);
  font-weight: bold;
  margin-bottom: 0.4rem;
  letter-spacing: 0.15rem;
}
#end-achievements li.ach-currency {
  color: var(--fg);
  opacity: 0.85;
  font-size: 0.85rem;
}

/* ── Currency badge in HUD ─────────────────────────────────────────────── */
#currency {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  padding: 0.4rem 0.8rem;
  letter-spacing: 0.15rem;
  color: var(--warn);
}

/* Shielded health pips get a glowing ring around the row. */
#health.shielded {
  outline: 2px solid color-mix(in srgb, #88ddff 80%, transparent);
  outline-offset: 4px;
  box-shadow: 0 0 12px color-mix(in srgb, #88ddff 70%, transparent);
}

/* ── Title-screen currency badge ──────────────────────────────────────── */
.currency-badge {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.1rem 0.5rem;
  font-size: 0.7rem;
  border: 1px solid var(--panel-edge);
  color: var(--warn);
  background: color-mix(in srgb, var(--accent) 4%, transparent);
}

/* ── Skill tree on title screen ───────────────────────────────────────── */
.col-skills {
  width: 95vw;
  max-width: 1100px;
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 0.4rem;
}
.skill-col {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.skill-col h4 {
  margin: 0 0 0.2rem;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.2rem;
  color: var(--accent);
  text-transform: uppercase;
}
.skill-cell {
  background: transparent;
  border: 1px solid var(--panel-edge);
  color: var(--fg);
  padding: 0.4rem 0.5rem;
  font-family: inherit;
  font-size: 0.65rem;
  text-align: left;
  letter-spacing: 0.05rem;
  text-transform: none;
  cursor: pointer;
  line-height: 1.35;
}
.skill-cell b { color: var(--accent); }
.skill-cell small { display: block; opacity: 0.78; margin-top: 0.15rem; }
.skill-cell span { display: block; margin-top: 0.25rem; color: var(--warn); }
.skill-cell.skill-owned {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  border-color: var(--accent);
  color: var(--accent);
  cursor: default;
}
.skill-cell.skill-owned span { color: var(--accent); }
.skill-cell.skill-locked,
.skill-cell.skill-unaffordable {
  opacity: 0.4;
  cursor: not-allowed;
}
.skill-cell.skill-available:hover {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-color: var(--accent);
}
.skill-cell em {
  display: inline-block;
  font-style: normal;
  font-size: 0.6rem;
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  color: var(--accent);
  padding: 0 0.3rem;
  margin-left: 0.2rem;
  border-radius: 2px;
}

/* HUD weapon counters — locked styling */
#grenades, #mines, #bolts {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  padding: 0.4rem 0.8rem;
  letter-spacing: 0.15rem;
  color: var(--accent);
}
#grenades.locked, #mines.locked, #bolts.locked {
  opacity: 0.5;
  color: var(--fg);
}