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

:root {
  --ivory: #f4ead8;
  --paper: #efe3cc;
  --ink: #2b261f;
  --mute: #6d6254;
  --line: rgba(43, 38, 31, 0.16);
  --gold: #c48a1a;
  --forest: #3d6b45;
  --moss: #2f5536;
  --orange: #c45c26;
  --heart: #c4453a;
  --frost: #3f6f88;
  --indigo: #3a3f6b;
  --shadow: 0 14px 40px rgba(40, 28, 16, 0.22);
  --font-ui: "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
  --font-num: "Avenir Next", "Segoe UI", system-ui, sans-serif;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #8ea8b6;
  color: var(--ink);
  font-family: var(--font-ui);
}

canvas#viewport {
  display: block;
  width: 100%;
  height: 100%;
}

#fx-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
}

.gold-pop {
  position: absolute;
  transform: translate(-50%, -50%);
  color: #f3d27a;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 15px;
  text-shadow: 0 1px 0 #3a2a10, 0 2px 6px rgba(0, 0, 0, 0.35);
  white-space: nowrap;
}

#overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(28, 22, 16, 0.08), rgba(18, 20, 26, 0.28));
}

#overlay[hidden] { display: none; }

.sheet {
  width: min(460px, 92vw);
  padding: 34px 36px 30px;
  background:
    linear-gradient(180deg, rgba(255, 250, 240, 0.9), rgba(236, 222, 196, 0.88));
  border: 1px solid rgba(80, 56, 28, 0.18);
  border-radius: 6px;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  text-align: center;
}

.sheet[hidden] { display: none; }

.kicker {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--orange);
  font-family: var(--font-num);
  font-weight: 700;
  margin-bottom: 10px;
}

.sheet h1 {
  font-size: 1.7rem;
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 10px;
}

.best {
  color: var(--mute);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.controls {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px 14px;
  text-align: left;
  margin-bottom: 24px;
  font-size: 0.82rem;
  color: var(--mute);
}

kbd {
  display: inline-block;
  min-width: 1.15em;
  padding: 0 5px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.7);
  font-family: var(--font-num);
  font-size: 0.74rem;
  color: var(--ink);
}

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  font-family: var(--font-ui);
  font-weight: 700;
  border-radius: 4px;
}

.btn.primary {
  background: var(--forest);
  color: #f6f1e4;
  padding: 12px 28px;
  font-size: 1.02rem;
  box-shadow: 0 2px 0 #2a4a30;
}

.btn.primary:hover { background: #467a4e; }
.btn.primary:focus-visible { outline: 3px solid #d4a017; outline-offset: 2px; }

.result {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.result.win { color: var(--forest); }
.result.lose { color: var(--heart); }
.result-sub { color: var(--mute); margin-bottom: 18px; }

.stat-list {
  display: grid;
  gap: 8px;
  margin: 8px 0 22px;
  text-align: left;
}
.stat-list div {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 6px;
  color: var(--mute);
}
.stat-list strong {
  color: var(--ink);
  font-family: var(--font-num);
}

#hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 14px 18px;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(244, 234, 216, 0.55), transparent 80%);
}
#hud[hidden] { display: none; }
#hud > * { pointer-events: auto; }

.hud-cluster { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.hud-cluster.right { justify-content: flex-end; }

.stat {
  min-width: 78px;
  padding: 7px 12px 6px;
  background: rgba(244, 234, 216, 0.92);
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: 0 6px 16px rgba(40, 28, 16, 0.12);
}
.stat .label {
  display: block;
  font-family: var(--font-num);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}
.stat strong {
  font-family: var(--font-num);
  font-size: 1.15rem;
  line-height: 1.1;
}
.stat.gold strong { color: var(--gold); }
.stat.lives strong { color: var(--heart); }
.stat.wave strong { color: var(--indigo); }

.btn.wave-btn {
  background: var(--orange);
  color: #fff8ee;
  padding: 10px 16px;
  font-size: 0.95rem;
  box-shadow: 0 2px 0 #8a3c14;
}
.btn.wave-btn:hover { filter: brightness(1.06); }
.btn.wave-btn:focus-visible,
.chip:focus-visible,
.tower-card:focus-visible,
.ip-btn:focus-visible {
  outline: 3px solid #d4a017;
  outline-offset: 2px;
}
.btn.wave-btn[hidden] { display: none; }

.chip {
  background: rgba(244, 234, 216, 0.92);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 8px 11px;
  border-radius: 4px;
  cursor: pointer;
}
.chip.active {
  background: var(--indigo);
  color: #f4ead8;
  border-color: var(--indigo);
}
#pause-btn.active {
  background: var(--heart);
  color: #fff;
  border-color: var(--heart);
}

#wave-preview {
  position: fixed;
  top: 78px;
  left: 18px;
  z-index: 50;
  width: 176px;
  padding: 12px 14px;
  background: rgba(244, 234, 216, 0.94);
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: 0 8px 20px rgba(40, 28, 16, 0.12);
}
#wave-preview[hidden] { display: none; }
#wave-preview h2 {
  font-size: 0.95rem;
  margin-bottom: 6px;
  color: var(--indigo);
}
.wp-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-num);
  font-size: 0.82rem;
  color: var(--mute);
  padding: 2px 0;
}
.wp-row b { color: var(--ink); font-weight: 700; }

#boss-bar {
  position: fixed;
  top: 78px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  width: min(420px, 70vw);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: rgba(44, 24, 22, 0.82);
  color: #f4ead8;
  border-radius: 4px;
  font-family: var(--font-num);
  font-size: 0.78rem;
}
#boss-bar[hidden] { display: none; }
.boss-track {
  flex: 1;
  height: 10px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 99px;
  overflow: hidden;
}
#boss-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #c4453a, #e07a3a);
}

#tower-dock {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  gap: 8px;
}
#tower-dock[hidden] { display: none; }

.tower-card {
  width: 118px;
  padding: 10px 10px 8px;
  background: rgba(244, 234, 216, 0.95);
  border: 1px solid var(--line);
  border-top-width: 4px;
  border-radius: 5px;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-ui);
  color: var(--ink);
  box-shadow: 0 8px 18px rgba(40, 28, 16, 0.12);
}
.tower-card[data-type="arrow"] { border-top-color: var(--forest); }
.tower-card[data-type="cannon"] { border-top-color: var(--orange); }
.tower-card[data-type="frost"] { border-top-color: var(--frost); }
.tower-card.selected { box-shadow: 0 0 0 2px var(--indigo), 0 8px 18px rgba(40, 28, 16, 0.12); }
.tower-card.poor { opacity: 0.55; }
.tower-card .swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 4px;
}
.swatch.arrow { background: var(--forest); }
.swatch.cannon { background: var(--orange); }
.swatch.frost { background: var(--frost); }
.tower-card .name { font-weight: 700; font-size: 0.95rem; }
.tower-card .cost {
  display: block;
  color: var(--gold);
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 0.82rem;
  margin: 2px 0 1px;
}
.tower-card .desc { display: block; color: var(--mute); font-size: 0.72rem; }
.tower-card kbd { margin-top: 6px; }

#inspect-panel {
  position: fixed;
  left: 50%;
  bottom: 132px;
  transform: translateX(-50%);
  z-index: 60;
  width: min(280px, 90vw);
  padding: 14px 16px 12px;
  background: rgba(244, 234, 216, 0.97);
  border: 1px solid var(--line);
  border-radius: 5px;
  box-shadow: var(--shadow);
}
#inspect-panel[hidden] { display: none; }
#inspect-panel h2 { font-size: 1.05rem; margin-bottom: 8px; padding-right: 18px; }
.icon-x {
  position: absolute;
  top: 6px;
  right: 8px;
  background: none;
  border: 0;
  font-size: 1.2rem;
  color: var(--mute);
  cursor: pointer;
}
.ip-stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 12px;
  font-size: 0.8rem;
  color: var(--mute);
  margin-bottom: 10px;
}
.ip-stats .v { color: var(--ink); font-family: var(--font-num); font-weight: 700; text-align: right; }
.ip-stats .delta { color: var(--forest); }
.ip-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.ip-btn {
  border: 1px solid var(--line);
  background: #fffaf0;
  color: var(--ink);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.ip-btn.upgrade { border-color: var(--forest); color: var(--forest); }
.ip-btn.sell { border-color: var(--heart); color: var(--heart); }

#toast {
  position: fixed;
  left: 50%;
  bottom: 118px;
  transform: translateX(-50%);
  z-index: 70;
  padding: 7px 14px;
  background: rgba(43, 38, 31, 0.9);
  color: #f4ead8;
  border-radius: 99px;
  font-family: var(--font-num);
  font-size: 0.84rem;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
}
#toast.show { opacity: 1; }

#pause-banner {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 55;
  padding: 10px 22px;
  background: rgba(43, 38, 31, 0.78);
  color: #f4ead8;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-num);
  font-weight: 800;
  border-radius: 4px;
}
#pause-banner[hidden] { display: none; }

@media (prefers-color-scheme: dark) {
  :root {
    --ivory: #2a2620;
    --paper: #322c24;
    --ink: #f0e6d4;
    --mute: #b4a790;
    --line: rgba(240, 230, 212, 0.14);
  }
  .sheet {
    background: linear-gradient(180deg, rgba(48, 42, 34, 0.82), rgba(32, 28, 24, 0.78));
    color: var(--ink);
  }
  .chip, #wave-preview, .tower-card, #inspect-panel {
    background: rgba(42, 38, 32, 0.92);
    color: var(--ink);
  }
  .stat {
    background: rgba(244, 234, 216, 0.94);
    color: #2b261f;
  }
  .stat .label { color: #6d6254; }
  .ip-btn { background: #3a342c; color: var(--ink); }
  kbd { background: rgba(255, 255, 255, 0.06); color: var(--ink); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .gold-pop { text-shadow: none; }
}

@media (max-width: 820px) {
  .controls { grid-template-columns: 1fr; }
  .tower-card { width: 100px; }
}