* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: #071326;
  color: #fff;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

body {
  display: flex;
  justify-content: center;
  padding: 20px 12px;
  overflow-x: hidden;
}

button {
  font: inherit;
}

.game-shell {
  width: min(100%, 480px);
}

.game-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 12px;
}

.game-header h1 {
  margin: 0;
  font-size: clamp(24px, 7vw, 36px);
  letter-spacing: 0.06em;
}

.subtitle {
  margin: 4px 0 0;
  color: #c9d7ef;
  font-size: 13px;
}

.status-panel {
  display: flex;
  gap: 8px;
}

.status-item {
  min-width: 62px;
  padding: 7px 8px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.07);
  text-align: center;
}

.status-label {
  display: block;
  color: #b9c7dc;
  font-size: 10px;
}

.status-item strong {
  display: block;
  margin-top: 2px;
  font-size: 21px;
}

.game-area-wrap {
  position: relative;
}

.game-area {
  position: relative;
  width: 100%;
  height: min(76vh, 720px);
  min-height: 540px;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 22px;
  background:
    radial-gradient(circle at 20% 20%, rgba(67, 110, 194, 0.26), transparent 28%),
    radial-gradient(circle at 80% 65%, rgba(65, 72, 163, 0.2), transparent 30%),
    linear-gradient(#0b1930, #040912);
  box-shadow:
    inset 0 0 40px rgba(0, 0, 0, 0.45),
    0 20px 60px rgba(0, 0, 0, 0.35);
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

.game-area::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    radial-gradient(circle, #fff 0 1px, transparent 1.6px),
    radial-gradient(circle, #fff 0 1px, transparent 1.6px);
  background-position:
    20px 30px,
    90px 130px;
  background-size:
    110px 150px,
    170px 210px;
}

.star {
  position: absolute;
  display: grid;
  place-items: center;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  line-height: 1;
  filter: drop-shadow(0 3px 8px rgba(255, 225, 80, 0.35));
  transform: translate(-50%, -50%);
  -webkit-tap-highlight-color: transparent;
}

.star:active {
  scale: 0.92;
}

.star--large {
  font-size: 58px;
}

.star--medium {
  font-size: 42px;
}

.star--small {
  font-size: 28px;
}

.star--trap {
  filter:
    hue-rotate(245deg)
    saturate(1.8)
    drop-shadow(0 3px 8px rgba(223, 89, 255, 0.55));
}

.star--bomb {
  font-size: 38px;
  filter: drop-shadow(0 3px 8px rgba(255, 70, 70, 0.5));
}

.hp-badge {
  position: absolute;
  right: -4px;
  bottom: -2px;
  display: grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 12px;
  font-weight: 800;
  pointer-events: none;
}

.message-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  border-radius: 22px;
  background: rgba(2, 7, 15, 0.72);
  backdrop-filter: blur(5px);
  transition: opacity 0.2s ease;
}

.message-overlay:not(.is-visible) {
  opacity: 0;
  pointer-events: none;
}

.message-card {
  width: min(100%, 330px);
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  background: rgba(13, 28, 52, 0.94);
  text-align: center;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4);
}

.message-card h2 {
  margin: 0 0 10px;
  font-size: 28px;
}

.message-card p {
  margin: 0 0 20px;
  color: #d8e4f7;
  line-height: 1.7;
}

.primary-button {
  width: 100%;
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  background: #ffe14a;
  color: #111;
  font-weight: 900;
  cursor: pointer;
}

.primary-button:hover {
  filter: brightness(1.04);
}

.primary-button:active {
  transform: translateY(1px);
}

@media (max-width: 420px) {
  body {
    padding: 10px 8px;
  }

  .game-header {
    align-items: center;
  }

  .subtitle {
    display: none;
  }

  .game-area {
    height: calc(100svh - 100px);
    min-height: 500px;
  }
}


.difficulty-select {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 0 0 14px;
}

.difficulty-button {
  min-height: 54px;
  padding: 8px 6px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

.difficulty-button span {
  display: block;
  margin-top: 2px;
  color: #b9c7dc;
  font-size: 11px;
  font-weight: 700;
}

.difficulty-button.is-active {
  background: #ffe14a;
  color: #111;
  border-color: #ffe14a;
}

.difficulty-button.is-active span {
  color: #4c4210;
}

@media (max-width: 420px) {
  .status-panel {
    gap: 5px;
  }

  .status-item {
    min-width: 48px;
    padding: 6px 5px;
  }

  .status-item strong {
    font-size: 18px;
  }

  .status-label {
    font-size: 9px;
  }
}


.game-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 10px;
}

.live-difficulty {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  flex: 1;
}

.live-difficulty-button,
.pause-button {
  min-height: 42px;
  border-radius: 11px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.live-difficulty-button {
  padding: 7px 8px;
  font-size: 12px;
}

.live-difficulty-button.is-active {
  background: #ffe14a;
  border-color: #ffe14a;
  color: #111;
}

.pause-button {
  min-width: 92px;
  padding: 7px 12px;
}

.pause-button.is-paused {
  background: #fff;
  color: #111;
}

.explosion {
  position: absolute;
  z-index: 20;
  display: grid;
  place-items: center;
  width: 160px;
  height: 160px;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.explosion-core {
  position: absolute;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: #fff4a6;
  box-shadow:
    0 0 0 10px rgba(255, 193, 7, 0.88),
    0 0 0 24px rgba(255, 87, 34, 0.62),
    0 0 0 42px rgba(255, 35, 35, 0.24);
  animation: explosion-core 650ms ease-out forwards;
}

.explosion-ring {
  position: absolute;
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255, 235, 140, 0.95);
  border-radius: 999px;
  animation: explosion-ring 650ms ease-out forwards;
}

.explosion-emoji {
  position: absolute;
  font-size: 58px;
  animation: explosion-emoji 650ms ease-out forwards;
}

@keyframes explosion-core {
  0% {
    transform: scale(0.25);
    opacity: 1;
  }
  65% {
    transform: scale(1.35);
    opacity: 1;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}

@keyframes explosion-ring {
  0% {
    transform: scale(0.3);
    opacity: 1;
  }
  100% {
    transform: scale(2.8);
    opacity: 0;
  }
}

@keyframes explosion-emoji {
  0% {
    transform: scale(0.4) rotate(-10deg);
    opacity: 1;
  }
  55% {
    transform: scale(1.45) rotate(8deg);
    opacity: 1;
  }
  100% {
    transform: scale(2) rotate(14deg);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .explosion-core,
  .explosion-ring,
  .explosion-emoji {
    animation-duration: 1ms;
  }
}

@media (max-width: 420px) {
  .game-controls {
    gap: 6px;
  }

  .pause-button {
    min-width: 82px;
    padding-inline: 8px;
    font-size: 12px;
  }

  .live-difficulty-button {
    padding-inline: 5px;
    font-size: 11px;
  }
}


.control-stack {
  display: grid;
  gap: 6px;
  flex: 1;
  min-width: 0;
}

.stage-select {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.stage-button {
  min-height: 38px;
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.stage-button.is-active {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(255, 255, 255, 0.92);
  color: #111;
}