:root {
  color-scheme: dark;
  --ink: #f7f3e8;
  --muted: #b9c5b5;
  --panel: rgba(28, 23, 32, 0.88);
  --panel-strong: rgba(16, 15, 20, 0.96);
  --line: rgba(255, 255, 255, 0.16);
  --mint: #61d394;
  --gold: #ffd166;
  --coral: #ef476f;
  --teal: #118ab2;
  --violet: #9b5de5;
  --shadow: rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #17151f;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  font: inherit;
}

.shell {
  position: relative;
  width: 100vw;
  height: 100svh;
  min-width: 320px;
  min-height: 420px;
  isolation: isolate;
  background: #17151f;
}

#game {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.hud {
  position: absolute;
  z-index: 3;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: none;
}

.hud__group {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
}

.hud__group--right {
  justify-content: flex-end;
}

.hud__level,
.meter,
.hearts,
.icon-button,
.touch-button {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 12px 26px var(--shadow);
  backdrop-filter: blur(14px);
}

.hud__level {
  max-width: min(42vw, 280px);
  height: 38px;
  padding: 0 14px;
  border-radius: 7px;
  overflow: hidden;
  color: var(--ink);
  font-weight: 800;
  line-height: 36px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.meter {
  display: inline-flex;
  width: auto;
  min-width: 74px;
  height: 38px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 7px;
  padding: 0 11px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0;
  tabular-nums: lining-nums;
}

.cell-icon {
  width: 14px;
  height: 18px;
  border: 2px solid #fff4bd;
  border-radius: 3px;
  background: linear-gradient(#fff4bd 0 22%, var(--gold) 23% 100%);
  box-shadow: 0 0 14px rgba(255, 209, 102, 0.6);
  transform: skew(-8deg);
}

.hearts {
  display: flex;
  width: 96px;
  height: 38px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border-radius: 7px;
}

.heart {
  width: 19px;
  height: 17px;
  background: var(--coral);
  clip-path: polygon(50% 100%, 4% 48%, 4% 21%, 24% 4%, 43% 10%, 50% 22%, 57% 10%, 76% 4%, 96% 21%, 96% 48%);
  filter: drop-shadow(0 0 10px rgba(239, 71, 111, 0.42));
}

.heart.is-empty {
  background: rgba(255, 255, 255, 0.16);
  filter: none;
}

.icon-button {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 7px;
  color: var(--ink);
  cursor: pointer;
  pointer-events: auto;
}

.icon-button svg,
.touch-button svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.6;
}

.icon-button:focus-visible,
.touch-button:focus-visible,
.primary-button:focus-visible,
.secondary-button:focus-visible {
  outline: 3px solid rgba(255, 209, 102, 0.78);
  outline-offset: 2px;
}

.icon-button:hover,
.touch-button:hover {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(44, 38, 52, 0.92);
}

.screen {
  position: absolute;
  z-index: 4;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.screen::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(12, 11, 16, 0.42), rgba(12, 11, 16, 0.66)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 5px);
  content: "";
}

.screen.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.screen__panel {
  position: relative;
  width: min(520px, 100%);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(22px, 5vw, 38px);
  background: var(--panel-strong);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.48);
}

.screen__kicker {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.screen h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.35rem, 9vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.screen__copy {
  max-width: 33rem;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.8vw, 1.1rem);
  line-height: 1.55;
}

.screen__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.primary-button,
.secondary-button {
  min-width: 136px;
  min-height: 44px;
  border-radius: 7px;
  padding: 0 18px;
  cursor: pointer;
  font-weight: 900;
}

.primary-button {
  border: 0;
  background: var(--gold);
  color: #21180a;
  box-shadow: 0 14px 28px rgba(255, 209, 102, 0.22);
}

.secondary-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
}

.secondary-button.is-hidden {
  display: none;
}

.touch-controls {
  position: absolute;
  z-index: 3;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  left: max(16px, env(safe-area-inset-left));
  display: none;
  align-items: end;
  justify-content: space-between;
  pointer-events: none;
}

.touch-controls__move,
.touch-controls__act {
  display: flex;
  align-items: center;
  gap: 12px;
}

.touch-button {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  border-radius: 8px;
  color: var(--ink);
  cursor: pointer;
  opacity: 0.92;
  pointer-events: auto;
  touch-action: none;
}

.touch-button--small {
  width: 54px;
  height: 54px;
}

.touch-button.is-active {
  border-color: rgba(255, 209, 102, 0.76);
  background: rgba(97, 211, 148, 0.24);
}

@media (pointer: coarse), (max-width: 760px) {
  .touch-controls {
    display: flex;
  }

  .hud {
    align-items: flex-start;
  }

  .hud__group {
    gap: 7px;
  }

  .hud__level {
    max-width: 36vw;
    height: 34px;
    padding: 0 10px;
    font-size: 0.88rem;
    line-height: 32px;
  }

  .meter,
  .hearts,
  .icon-button {
    height: 34px;
  }

  .meter {
    min-width: 62px;
    padding: 0 8px;
    font-size: 0.82rem;
  }

  .hearts {
    width: 78px;
    gap: 5px;
  }

  .heart {
    width: 16px;
    height: 15px;
  }

  .icon-button {
    width: 34px;
  }

  .meter--time {
    display: none;
  }
}

@media (max-width: 540px) {
  .hud {
    flex-wrap: wrap;
  }

  .hud__group--right {
    margin-left: auto;
  }

  .screen__panel {
    align-self: start;
    margin-top: 76px;
  }
}