:root {
  color-scheme: dark;
  --panel: rgba(18, 24, 28, 0.82);
  --panel-solid: #182027;
  --panel-soft: rgba(255, 255, 255, 0.08);
  --text: #f4f7ef;
  --muted: #bac5b7;
  --accent: #f6c343;
  --green: #56d17a;
  --red: #f1645c;
  --blue: #5ab8ff;
  --line: rgba(255, 255, 255, 0.16);
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.34);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #111816;
  color: var(--text);
  touch-action: none;
  user-select: none;
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  min-height: 42px;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}

button:hover,
button:focus-visible {
  background: rgba(255, 255, 255, 0.17);
  border-color: rgba(255, 255, 255, 0.34);
  outline: none;
}

button:active {
  transform: translateY(1px) scale(0.98);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

#gameCanvas {
  display: block;
  width: 100vw;
  height: 100vh;
}

.hidden {
  display: none !important;
}

.hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}

.hud button,
.tower-shop,
.upgrade-panel {
  pointer-events: auto;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  font-size: 15px;
  font-weight: 900;
}

.top-right-stack {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  right: max(12px, env(safe-area-inset-right));
}

.heart-icon,
.coin-icon,
.speaker-icon,
.shop-icon {
  position: relative;
  display: inline-block;
  flex: 0 0 auto;
}

.heart-icon {
  width: 18px;
  height: 18px;
  background: var(--red);
  transform: rotate(45deg);
  border-radius: 3px;
  margin-left: 2px;
}

.heart-icon::before,
.heart-icon::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--red);
}

.heart-icon::before {
  left: -9px;
  top: 0;
}

.heart-icon::after {
  left: 0;
  top: -9px;
}

.coin-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff3a8 0 17%, #f6c343 18% 68%, #b9801b 70%);
  box-shadow: inset 0 0 0 2px rgba(93, 56, 6, 0.28);
}

.icon-button {
  padding: 0 12px;
}

.speed-button {
  min-width: 45px;
}

.ability-dock {
  position: fixed;
  left: max(14px, env(safe-area-inset-left));
  bottom: max(14px, env(safe-area-inset-bottom));
  display: flex;
  gap: 10px;
}

.ability-button {
  position: relative;
  width: 58px;
  height: 58px;
  overflow: hidden;
  background: rgba(16, 22, 26, 0.86);
  box-shadow: var(--shadow);
}

.ability-button.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(246, 195, 67, 0.2), var(--shadow);
}

.ability-art {
  position: absolute;
  inset: 10px;
}

.bomb-art {
  border-radius: 50%;
  background: radial-gradient(circle at 38% 30%, #6b7780 0 14%, #1a2229 15% 68%, #070a0c 70%);
}

.bomb-art::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 5px;
  top: -2px;
  right: 2px;
  background: #7b5540;
  transform: rotate(-32deg);
  border-radius: 5px;
}

.freeze-art {
  clip-path: polygon(50% 0, 62% 35%, 100% 25%, 70% 50%, 100% 75%, 62% 65%, 50% 100%, 38% 65%, 0 75%, 30% 50%, 0 25%, 38% 35%);
  background: linear-gradient(135deg, #d5fbff, #5ab8ff 55%, #2766d6);
}

.bolt-art {
  clip-path: polygon(56% 0, 20% 55%, 48% 55%, 38% 100%, 82% 42%, 55% 42%);
  background: linear-gradient(180deg, #fff7a8, #f6c343 54%, #f4772c);
}

.cooldown-fill {
  position: absolute;
  inset: auto 0 0 0;
  height: 0%;
  background: rgba(0, 0, 0, 0.58);
  pointer-events: none;
}

.shop-button {
  position: fixed;
  right: max(14px, env(safe-area-inset-right));
  bottom: calc(max(14px, env(safe-area-inset-bottom)) + 78px);
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 14px;
  height: 58px;
  background: rgba(21, 28, 31, 0.88);
  box-shadow: var(--shadow);
}

.shop-icon {
  width: 24px;
  height: 24px;
  border-radius: 5px 5px 3px 3px;
  background: linear-gradient(#78d07d, #2f8f54);
  box-shadow: inset 0 -5px 0 rgba(0, 0, 0, 0.22);
}

.shop-icon::before {
  content: "";
  position: absolute;
  left: 5px;
  right: 5px;
  top: -9px;
  height: 12px;
  border-radius: 4px;
  background: #3f5360;
}

.tower-shop {
  position: fixed;
  right: max(14px, env(safe-area-inset-right));
  bottom: calc(max(14px, env(safe-area-inset-bottom)) + 150px);
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 10px;
  width: min(780px, calc(100vw - 28px));
  transform: translateY(28px);
  opacity: 0;
  pointer-events: none;
  transition: transform 180ms ease, opacity 180ms ease;
}

.tower-shop.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.tower-card {
  min-height: 162px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  text-align: left;
  backdrop-filter: blur(12px);
}

.tower-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(246, 195, 67, 0.18), var(--shadow);
}

.tower-preview {
  width: 58px;
  height: 48px;
  margin: 0 auto 6px;
}

.tower-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
}

.tower-card span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.35;
}

.upgrade-panel {
  position: fixed;
  min-width: 238px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.upgrade-panel h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.upgrade-panel button {
  display: block;
  width: 100%;
  margin-top: 7px;
  padding: 7px 8px;
  text-align: left;
  font-size: 13px;
}

.round-banner,
.combo-text,
.target-hint {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  padding: 7px 12px;
  border-radius: 8px;
  background: rgba(18, 24, 28, 0.68);
  border: 1px solid var(--line);
  font-weight: 900;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.55);
}

.round-banner {
  top: max(14px, env(safe-area-inset-top));
  font-size: 16px;
}

.combo-text {
  top: 58px;
  color: var(--accent);
  opacity: 0;
  transition: opacity 120ms ease;
}

.combo-text.visible {
  opacity: 1;
}

.target-hint {
  bottom: 92px;
  color: #d8f6ff;
}

.modal-shade {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 10;
  background: radial-gradient(circle at 50% 35%, rgba(54, 70, 55, 0.24), rgba(0, 0, 0, 0.64) 62%);
  padding: 18px;
}

.modal {
  width: min(390px, 94vw);
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(18, 24, 28, 0.92);
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(16px);
}

.modal h1,
.modal h2 {
  margin: 0 0 18px;
  letter-spacing: 0;
}

.modal h1 {
  font-size: clamp(34px, 8vw, 52px);
  line-height: 0.98;
}

.modal h2 {
  font-size: 32px;
}

.modal p {
  color: var(--muted);
}

.primary-button {
  width: 100%;
  min-height: 52px;
  background: linear-gradient(180deg, #65c86f, #277a45);
  border-color: rgba(255, 255, 255, 0.24);
  color: #fff;
}

.menu-actions {
  display: grid;
  gap: 9px;
}

.volume-readout {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 900;
}

.volume-readout.pulse {
  animation: volumePulse 260ms ease;
}

.speaker-icon {
  width: 19px;
  height: 15px;
  background: linear-gradient(90deg, #dbe8ef 0 35%, transparent 36%);
}

.speaker-icon::before {
  content: "";
  position: absolute;
  left: 7px;
  top: -4px;
  width: 15px;
  height: 23px;
  border: 3px solid #dbe8ef;
  border-left: 0;
  border-radius: 0 50% 50% 0;
}

@keyframes volumePulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@media (max-width: 760px) {
  .tower-shop {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    left: 14px;
    right: 14px;
    width: auto;
    max-height: min(58vh, 470px);
    overflow: auto;
  }

  .tower-card {
    min-height: 148px;
  }

  .status-pill {
    gap: 7px;
    font-size: 14px;
  }

  .icon-button {
    padding: 0 9px;
  }
}