:root {
  --ink: #16151d;
  --paper: #f8f3e8;
  --lime: #baf43b;
  --hot: #f2456f;
  --cyan: #35c6d8;
  --violet: #6b4cf6;
  --line: rgba(22, 21, 29, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background:
    linear-gradient(90deg, rgba(22, 21, 29, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(22, 21, 29, 0.05) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
}

button {
  border: 2px solid var(--ink);
  border-radius: 8px;
  min-height: 48px;
  padding: 0 22px;
  color: var(--ink);
  background: white;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--ink);
  transition:
    transform 140ms ease,
    box-shadow 140ms ease,
    background 140ms ease;
}

button:hover:not(:disabled) {
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 var(--ink);
}

button:active:not(:disabled) {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--ink);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.game-shell {
  display: grid;
  min-height: 100vh;
  padding: clamp(14px, 3vw, 36px);
  place-items: center;
}

.stage {
  width: min(1040px, 100%);
  min-height: min(760px, calc(100vh - 28px));
  display: grid;
  grid-template-rows: auto auto minmax(280px, 1fr) auto auto auto;
  gap: 18px;
  border: 3px solid var(--ink);
  border-radius: 8px;
  padding: clamp(16px, 3vw, 28px);
  background:
    radial-gradient(circle at 16% 20%, rgba(186, 244, 59, 0.45) 0 11%, transparent 12%),
    radial-gradient(circle at 88% 12%, rgba(53, 198, 216, 0.36) 0 9%, transparent 10%),
    white;
  box-shadow: 10px 10px 0 rgba(22, 21, 29, 0.95);
}

.top-bar,
.prompt-panel,
.controls,
.meter,
.judgement-row {
  display: flex;
  align-items: center;
}

.top-bar {
  justify-content: space-between;
  gap: 16px;
}

.status-cluster {
  display: flex;
  align-items: stretch;
  gap: 12px;
}

.level-board {
  display: grid;
  min-width: 104px;
  padding: 10px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--cyan);
}

.level-board span {
  margin-bottom: 5px;
  font-size: 0.76rem;
  font-weight: 900;
}

.level-board strong {
  font-size: 1.4rem;
  line-height: 1;
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 0.78rem;
  font-weight: 900;
  color: var(--hot);
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 5.8rem);
  line-height: 0.9;
}

.scoreboard {
  min-width: 124px;
  padding: 12px 14px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--lime);
  text-align: right;
}

.scoreboard span {
  display: block;
  font-size: 0.76rem;
  font-weight: 900;
}

.scoreboard strong {
  display: block;
  font-size: 2rem;
  line-height: 1;
}

.prompt-panel {
  justify-content: center;
  gap: 14px;
  min-height: 74px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--ink);
  color: white;
}

.prompt-label,
.next-count {
  color: rgba(255, 255, 255, 0.66);
  font-weight: 800;
}

#target-word {
  min-width: min(44vw, 340px);
  color: var(--lime);
  font-size: clamp(1.7rem, 5vw, 3.2rem);
  line-height: 1;
  text-align: center;
}

.track-wrap {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(242, 69, 111, 0.38) calc(50% - 1px), rgba(242, 69, 111, 0.38) calc(50% + 1px), transparent calc(50% + 1px)),
    linear-gradient(180deg, rgba(53, 198, 216, 0.08), rgba(186, 244, 59, 0.08));
}

.track-wrap::before,
.track-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 5;
  width: min(26%, 210px);
  pointer-events: none;
}

.track-wrap::before {
  left: 0;
  background: linear-gradient(90deg, white 0%, rgba(255, 255, 255, 0.76) 44%, rgba(255, 255, 255, 0) 100%);
}

.track-wrap::after {
  right: 0;
  background: linear-gradient(270deg, rgba(255, 255, 255, 0.86) 0%, rgba(255, 255, 255, 0.58) 48%, rgba(255, 255, 255, 0) 100%);
}

.hit-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  z-index: 2;
  width: 7px;
  transform: translateX(-50%);
  background: var(--hot);
  box-shadow:
    0 0 0 3px rgba(242, 69, 111, 0.14),
    0 0 0 999px rgba(255, 255, 255, 0.08);
}

.lyric-track {
  position: absolute;
  top: 68%;
  left: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 18px;
  height: 90px;
  white-space: nowrap;
  transform: translate3d(0, -50%, 0);
  will-change: transform;
}

.jthis-avatar {
  position: absolute;
  right: max(-18px, -3vw);
  bottom: 2px;
  z-index: 4;
  width: clamp(190px, 30vw, 340px);
  max-height: 118%;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
  filter: drop-shadow(7px 7px 0 rgba(22, 21, 29, 0.42));
}

.token {
  display: inline-grid;
  min-width: 88px;
  min-height: 58px;
  padding: 12px 16px;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  font-size: clamp(1rem, 2.3vw, 1.5rem);
  font-weight: 900;
  box-shadow: 2px 2px 0 rgba(22, 21, 29, 0.58);
  opacity: 0.78;
}

.token.target {
  background: rgba(186, 244, 59, 0.88);
  opacity: 0.94;
}

.token.hit {
  background: rgba(53, 198, 216, 0.9);
  opacity: 0.94;
}

.token.missed {
  background: rgba(242, 69, 111, 0.9);
  color: white;
  opacity: 0.94;
}

.judgement-row {
  justify-content: space-between;
  gap: 16px;
  min-height: 42px;
}

#judgement {
  min-width: 128px;
  color: var(--violet);
  font-size: 1.4rem;
}

#hint {
  color: rgba(22, 21, 29, 0.68);
  font-weight: 700;
  text-align: right;
}

.controls {
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.comfort-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 14px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: white;
  font-weight: 900;
  box-shadow: 4px 4px 0 var(--ink);
}

.comfort-toggle input {
  width: 18px;
  height: 18px;
  accent-color: var(--cyan);
}

body.comfort-mode .track-wrap::before {
  background: linear-gradient(90deg, white, rgba(255, 255, 255, 0));
}

body.comfort-mode .track-wrap::after {
  background: linear-gradient(270deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0));
}

body.comfort-mode .token {
  box-shadow: 1px 1px 0 rgba(22, 21, 29, 0.42);
  opacity: 0.68;
}

body.comfort-mode .token.target,
body.comfort-mode .token.hit,
body.comfort-mode .token.missed {
  opacity: 0.88;
}

#stop-btn {
  min-width: 148px;
  background: var(--hot);
  color: white;
}

#start-btn {
  background: var(--lime);
}

.meter {
  justify-content: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 900;
}

.meter span {
  border: 2px solid var(--ink);
  border-radius: 999px;
  padding: 5px 9px;
  background: white;
}

.meter-perfect {
  color: var(--hot);
}

.meter-good {
  color: var(--violet);
}

.meter-ok {
  color: var(--cyan);
}

@media (max-width: 680px) {
  .stage {
    min-height: calc(100vh - 28px);
    box-shadow: 6px 6px 0 rgba(22, 21, 29, 0.95);
  }

  .top-bar {
    align-items: flex-start;
  }

  .status-cluster {
    flex-direction: column;
    min-width: 112px;
  }

  .scoreboard {
    min-width: 92px;
  }

  .scoreboard strong {
    font-size: 1.45rem;
  }

  .prompt-panel {
    flex-wrap: wrap;
    padding: 10px;
  }

  #target-word {
    order: 3;
    width: 100%;
  }

  .judgement-row {
    display: block;
  }

  #hint {
    display: block;
    margin-top: 6px;
    text-align: left;
  }

  .controls button {
    flex: 1 1 92px;
    padding: 0 12px;
  }

  .comfort-toggle {
    flex: 1 1 132px;
    justify-content: center;
  }

  .lyric-track {
    top: 70%;
  }

  .jthis-avatar {
    right: -30px;
    bottom: 8px;
    width: clamp(170px, 55vw, 240px);
  }
}