:root {
  --bg-deep: #0c1a14;
  --bg-mid: #163528;
  --accent: #f0b429;
  --accent-hot: #ff6b35;
  --juice: #ff4d6d;
  --leaf: #3ecf8e;
  --text: #f4f7f2;
  --muted: #a8c4b5;
  --panel: rgba(12, 28, 22, 0.86);
  --glow: rgba(240, 180, 41, 0.35);
}

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

html,
body {
  height: 100%;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

body {
  font-family: "Fredoka", "ZCOOL KuaiLe", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 120% 80% at 50% -10%, #2a5a40 0%, transparent 55%),
    radial-gradient(ellipse 80% 50% at 80% 100%, #1a3d2e 0%, transparent 45%),
    linear-gradient(165deg, var(--bg-deep), var(--bg-mid) 45%, #0a1410);
}

.app {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 0.75rem;
  padding: 1rem clamp(0.75rem, 3vw, 1.5rem) 1rem;
  max-width: 960px;
  margin: 0 auto;
}

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-family: "ZCOOL KuaiLe", "Fredoka", sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: 0.04em;
  color: var(--accent);
  text-shadow: 0 2px 0 #8a5a10, 0 0 24px var(--glow);
  animation: brand-pulse 2.8s ease-in-out infinite;
}

@keyframes brand-pulse {
  0%,
  100% {
    transform: scale(1);
    filter: brightness(1);
  }
  50% {
    transform: scale(1.03);
    filter: brightness(1.12);
  }
}

.stats {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.15;
}

.stat .label {
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat span:last-child {
  font-size: 1.25rem;
  font-weight: 700;
}

.stat.score span:last-child {
  color: var(--accent);
}

.stat.combo-stat span:last-child {
  color: var(--accent-hot);
  min-width: 1.5ch;
}

.lives {
  display: flex;
  gap: 0.35rem;
  margin-left: 0.15rem;
}

.lives .heart {
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 50% 50% 45% 45%;
  background: radial-gradient(circle at 35% 30%, #ff8fa3, var(--juice));
  box-shadow: 0 0 10px rgba(255, 77, 109, 0.45);
  transition: transform 0.25s ease, opacity 0.25s ease, filter 0.25s ease;
}

.lives .heart.lost {
  opacity: 0.25;
  filter: grayscale(1);
  transform: scale(0.85);
}

.lives .heart.gain {
  animation: heart-pop 0.45s ease;
}

@keyframes heart-pop {
  0% {
    transform: scale(0.6);
  }
  50% {
    transform: scale(1.25);
  }
  100% {
    transform: scale(1);
  }
}

.icon-btn {
  appearance: none;
  border: 1px solid rgba(240, 180, 41, 0.3);
  background: rgba(12, 28, 22, 0.65);
  color: var(--accent);
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.65rem;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  transition: background 0.15s ease, opacity 0.15s ease;
}

.icon-btn:hover:not(:disabled) {
  background: rgba(240, 180, 41, 0.18);
}

.icon-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.icon-btn.muted {
  color: var(--muted);
  text-decoration: line-through;
}

.stage {
  position: relative;
  border-radius: 1.25rem;
  overflow: hidden;
  min-height: min(72vh, 680px);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06),
    0 24px 48px rgba(0, 0, 0, 0.45),
    inset 0 0 80px rgba(0, 0, 0, 0.35);
  background:
    radial-gradient(ellipse at 50% 120%, #1e4a35 0%, transparent 50%),
    linear-gradient(180deg, #142820 0%, #0d1c16 100%);
}

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

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 40%, rgba(30, 70, 50, 0.55), rgba(6, 14, 10, 0.88));
  backdrop-filter: blur(4px);
  transition: opacity 0.35s ease, visibility 0.35s ease;
  z-index: 5;
}

.overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.panel {
  text-align: center;
  padding: 1.75rem 1.85rem;
  max-width: 24rem;
  width: min(92vw, 24rem);
  background: var(--panel);
  border: 1px solid rgba(240, 180, 41, 0.25);
  border-radius: 1.25rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  animation: panel-in 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.panel.hidden {
  display: none;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.panel h1 {
  font-family: "ZCOOL KuaiLe", "Fredoka", sans-serif;
  font-size: clamp(2rem, 6vw, 2.75rem);
  color: var(--accent);
  margin-bottom: 0.55rem;
  text-shadow: 0 3px 0 #8a5a10;
}

.panel p {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.mode-row {
  display: flex;
  gap: 0.45rem;
  justify-content: center;
  margin-bottom: 0.65rem;
}

.mode {
  appearance: none;
  border: 1px solid rgba(168, 196, 181, 0.35);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-family: inherit;
  font-size: 0.88rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.mode:hover {
  border-color: rgba(240, 180, 41, 0.45);
  color: var(--text);
}

.mode.active {
  background: linear-gradient(180deg, rgba(240, 180, 41, 0.25), rgba(240, 180, 41, 0.1));
  border-color: var(--accent);
  color: var(--accent);
}

.mode-desc {
  font-size: 0.8rem !important;
  margin-bottom: 1.15rem !important;
  min-height: 1.2em;
}

.final-score strong {
  color: var(--accent);
  font-size: 1.4rem;
}

.over-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding: 0.75rem 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 0.85rem;
}

.over-stats li {
  font-size: 0.75rem;
  color: var(--muted);
}

.over-stats strong {
  display: block;
  margin-top: 0.2rem;
  font-size: 1.15rem;
  color: var(--text);
}

.btn {
  appearance: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.75rem 1.85rem;
  border-radius: 999px;
  color: #1a1208;
  background: linear-gradient(180deg, #ffd56a, var(--accent) 55%, #d4921a);
  box-shadow:
    0 4px 0 #9a6a12,
    0 8px 20px rgba(240, 180, 41, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(3px);
  box-shadow:
    0 1px 0 #9a6a12,
    0 4px 12px rgba(240, 180, 41, 0.25);
}

.combo {
  position: absolute;
  left: 50%;
  top: 26%;
  transform: translate(-50%, -50%) scale(0.6);
  font-family: "ZCOOL KuaiLe", "Fredoka", sans-serif;
  font-size: clamp(2rem, 8vw, 3.5rem);
  color: var(--accent-hot);
  text-shadow: 0 3px 0 #8a2e10, 0 0 28px rgba(255, 107, 53, 0.5);
  opacity: 0;
  pointer-events: none;
  z-index: 4;
}

.combo.show {
  animation: combo-pop 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes combo-pop {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.5) rotate(-8deg);
  }
  35% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.15) rotate(2deg);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -70%) scale(1) rotate(0deg);
  }
}

.banner {
  position: absolute;
  left: 50%;
  top: 18%;
  transform: translate(-50%, -50%);
  font-family: "ZCOOL KuaiLe", "Fredoka", sans-serif;
  font-size: clamp(1.4rem, 5vw, 2.2rem);
  color: #ffe08a;
  text-shadow: 0 3px 0 #8a5a10, 0 0 30px rgba(240, 180, 41, 0.55);
  opacity: 0;
  pointer-events: none;
  z-index: 4;
  white-space: nowrap;
}

.banner.show {
  animation: banner-sweep 1.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes banner-sweep {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.7) rotate(-4deg);
  }
  20% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.08) rotate(1deg);
  }
  75% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -80%) scale(0.95);
  }
}

.freeze-veil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 40%, rgba(120, 200, 255, 0.12), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 3;
}

.freeze-veil.on {
  opacity: 1;
}

.tips {
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  opacity: 0.85;
}

@media (max-width: 560px) {
  .app {
    padding: 0.65rem;
    gap: 0.5rem;
  }

  .stage {
    min-height: min(74vh, 560px);
    border-radius: 1rem;
  }

  .over-stats {
    grid-template-columns: 1fr;
    text-align: left;
    padding-left: 1rem;
  }

  .over-stats strong {
    display: inline;
    margin-left: 0.35rem;
  }

  .tips {
    font-size: 0.68rem;
  }
}