:root {
  --bg: #07070f;
  --pnl: #10101a;
  --bdr: #1e1e2a;
  --cy: #00f5ff;
  --mg: #ff2bd6;
  --yl: #ffd83d;
  --rd: #ff3860;
  --gr: #3dffaa;
  --txt: #f0f0f8;
  --dim: #555;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --jp: 'Noto Sans JP', sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  width: 100%; height: 100vh; height: 100dvh;
  background: var(--bg); color: var(--txt);
  font-family: var(--jp);
  overflow: hidden;
  -webkit-text-size-adjust: 100%;
}

/* ── SCREENS ── */
.screen { position: fixed; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.screen.hidden { display: none; }

/* ── START SCREEN ── */
#screen-start {
  background: var(--bg);
  padding: 20px;
  text-align: center;
  gap: 0;
}
.start-title {
  font-size: clamp(2rem, 8vw, 3.6rem);
  font-weight: 900;
  color: var(--txt);
  letter-spacing: -1px;
  line-height: 1;
}
.start-title .en { color: var(--cy); }
.start-title .jp { color: var(--mg); font-size: 0.55em; display: block; letter-spacing: 4px; margin-top: 4px; font-weight: 700; }
.start-sub {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin: 10px 0 24px;
}
.section-label {
  font-family: var(--mono);
  font-size: 0.55rem;
  color: var(--dim);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
  text-align: left;
}
.start-block { width: 100%; max-width: 420px; margin-bottom: 16px; }
.btn-row { display: flex; gap: 6px; }
.btn-row.wrap { flex-wrap: wrap; }
.pill {
  flex: 1; padding: 8px 10px;
  background: #000; border: 1px solid var(--bdr);
  color: var(--dim); font-family: var(--mono);
  font-size: 0.68rem; cursor: pointer;
  border-radius: 6px; letter-spacing: 1px;
  transition: 0.12s; min-width: 70px;
  text-align: center;
}
.pill:hover { border-color: #444; color: #999; }
.pill.on { border-color: var(--cy); color: var(--cy); background: rgba(0,245,255,.07); }
.pill.diff-easy.on { border-color: var(--gr); color: var(--gr); background: rgba(61,255,170,.07); }
.pill.diff-normal.on { border-color: var(--cy); color: var(--cy); background: rgba(0,245,255,.07); }
.pill.diff-hard.on { border-color: var(--rd); color: var(--rd); background: rgba(255,56,96,.07); }
.pill.on { border-color: var(--cy); color: var(--cy); background: rgba(0,245,255,.07); }
.pill.cat-verb.on { border-color: var(--cy); color: var(--cy); background: rgba(0,245,255,.07); }
.pill.cat-adj.on { border-color: var(--mg); color: var(--mg); background: rgba(255,43,214,.07); }
.pill.cat-noun.on { border-color: var(--yl); color: var(--yl); background: rgba(255,216,61,.07); }
.pill.cat-phrase.on { border-color: var(--gr); color: var(--gr); background: rgba(61,255,170,.07); }
.start-btn {
  width: 100%; max-width: 420px;
  padding: 16px;
  background: var(--cy); color: #000;
  font-family: var(--mono); font-size: 1rem;
  font-weight: 700; letter-spacing: 3px;
  border: none; border-radius: 8px;
  cursor: pointer; margin-top: 8px;
  transition: 0.1s;
}
.start-btn:hover { background: #33faff; }
.back-link {
  font-family: var(--mono); font-size: 0.65rem;
  color: var(--dim); text-decoration: none;
  letter-spacing: 2px; margin-top: 16px;
  display: inline-block;
  transition: color 0.1s;
}
.back-link:hover { color: var(--mg); }

/* ── GAME SCREEN ── */
#screen-game { background: var(--bg); }

#hud {
  position: fixed; top: 0; left: 0; right: 0;
  height: 44px;
  background: rgba(7,7,15,0.92);
  border-bottom: 1px solid var(--bdr);
  display: flex; align-items: center;
  padding: 0 14px; gap: 0;
  z-index: 100;
  font-family: var(--mono); font-size: 0.7rem;
}
.hud-brand {
  color: var(--mg); font-weight: 700;
  letter-spacing: 2px; font-size: 0.75rem;
  flex-shrink: 0;
}
.hud-sep { flex: 1; }
.hud-item { color: var(--dim); margin-left: 16px; white-space: nowrap; }
.hud-item span { color: var(--cy); font-weight: 700; margin-left: 4px; }
.hud-item.combo span { color: var(--yl); }
.hud-item.lives span { color: var(--rd); letter-spacing: 3px; }
.hud-hint-toggle {
  margin-left: 14px;
  background: none; border: 1px solid var(--bdr);
  color: var(--dim); font-family: var(--mono);
  font-size: 0.6rem; padding: 3px 7px;
  border-radius: 4px; cursor: pointer;
  letter-spacing: 1px; white-space: nowrap;
}
.hud-hint-toggle.on { border-color: var(--cy); color: var(--cy); }
.pause-btn {
  margin-left: 12px;
  background: none; border: 1px solid var(--bdr);
  color: var(--dim); font-family: var(--mono);
  font-size: 0.7rem; padding: 3px 8px;
  border-radius: 4px; cursor: pointer;
}
.pause-btn:hover { border-color: var(--mg); color: var(--mg); }

#stage {
  position: fixed;
  top: 44px; left: 0; right: 0; bottom: 88px;
  overflow: hidden;
}

/* ── WORD TILES ── */
.tile {
  position: absolute;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 8px 14px;
  background: rgba(16,16,26,0.88);
  border-radius: 10px;
  border: 1.5px solid var(--bdr);
  min-width: 80px;
  text-align: center;
  transition: border-color 0.1s;
  will-change: transform;
  pointer-events: none;
  user-select: none;
}
.tile .ja {
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 900;
  color: var(--txt);
  line-height: 1.1;
  font-family: var(--jp);
}
.tile .read {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--cy);
  letter-spacing: 1px;
  margin-top: 3px;
  transition: opacity 0.2s;
}
.tile .cat-badge {
  font-family: var(--mono);
  font-size: 0.48rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 2px;
  opacity: 0.55;
}
.tile.verb { border-color: rgba(0,245,255,.25); }
.tile.verb .cat-badge { color: var(--cy); }
.tile.adj { border-color: rgba(255,43,214,.25); }
.tile.adj .cat-badge { color: var(--mg); }
.tile.noun { border-color: rgba(255,216,61,.25); }
.tile.noun .cat-badge { color: var(--yl); }
.tile.phrase { border-color: rgba(61,255,170,.25); }
.tile.phrase .cat-badge { color: var(--gr); }
.tile.popping {
  animation: tile-pop 0.35s forwards;
}
.tile.missing {
  animation: tile-miss 0.5s forwards;
}
@keyframes tile-pop {
  0% { transform: scale(1); opacity: 1; }
  40% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(0.6); opacity: 0; }
}
@keyframes tile-miss {
  0% { transform: translateX(0); opacity: 1; }
  20% { transform: translateX(-8px); }
  60% { transform: translateX(8px); }
  100% { transform: translateX(0); opacity: 0; }
}

/* ── MISS TOAST ── */
#miss-area {
  position: fixed;
  bottom: 94px; left: 0; right: 0;
  display: flex; flex-direction: column;
  align-items: center; gap: 4px;
  pointer-events: none; z-index: 90;
}
.miss-toast {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--rd); letter-spacing: 1px;
  background: rgba(255,56,96,.12);
  border: 1px solid rgba(255,56,96,.3);
  padding: 4px 12px; border-radius: 20px;
  animation: toast-fade 2s forwards;
}
.miss-toast .ans { color: var(--yl); }
@keyframes toast-fade {
  0% { opacity: 0; transform: translateY(6px); }
  15% { opacity: 1; transform: translateY(0); }
  70% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-4px); }
}

/* ── POP FLOAT ── */
.pop-float {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gr);
  pointer-events: none;
  animation: float-up 0.9s forwards;
  white-space: nowrap;
  z-index: 80;
}
@keyframes float-up {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(-50px); }
}

/* ── INPUT AREA ── */
#input-area {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 88px;
  background: rgba(7,7,15,0.96);
  border-top: 1px solid var(--bdr);
  display: flex; align-items: center;
  padding: 0 16px; gap: 10px;
  z-index: 100;
}
#ans {
  flex: 1;
  background: #000;
  border: 2px solid var(--cy);
  color: var(--cy);
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 8px;
  outline: none;
  letter-spacing: 1px;
  text-align: center;
  caret-color: var(--mg);
  transition: border-color 0.1s, background 0.1s;
}
#ans::placeholder { color: #333; font-size: 0.85rem; letter-spacing: 2px; }
#ans:focus { border-color: var(--mg); box-shadow: 0 0 0 3px rgba(255,43,214,.1); }
#ans.correct { border-color: var(--gr); background: rgba(61,255,170,.06); color: var(--gr); }
#ans.wrong { border-color: var(--rd); background: rgba(255,56,96,.06); color: var(--rd); animation: input-shake 0.25s; }
@keyframes input-shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
#submit-btn {
  background: var(--cy); color: #000;
  border: none; border-radius: 8px;
  font-family: var(--mono); font-size: 0.75rem;
  font-weight: 700; letter-spacing: 2px;
  padding: 12px 16px; cursor: pointer;
  white-space: nowrap;
  transition: 0.1s; flex-shrink: 0;
}
#submit-btn:hover { background: #33faff; }

/* ── PAUSE OVERLAY ── */
#screen-pause {
  background: rgba(7,7,15,0.92);
  backdrop-filter: blur(6px);
  z-index: 200;
}
.pause-box {
  background: var(--pnl);
  border: 1px solid var(--bdr);
  border-radius: 14px;
  padding: 32px;
  text-align: center;
  max-width: 320px;
  width: 90%;
}
.pause-box h2 {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 4px;
  color: var(--dim);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.pause-resume {
  width: 100%;
  padding: 14px;
  background: var(--cy); color: #000;
  font-family: var(--mono); font-size: 0.9rem;
  font-weight: 700; letter-spacing: 3px;
  border: none; border-radius: 8px;
  cursor: pointer; margin-bottom: 10px;
}
.pause-quit {
  width: 100%;
  padding: 10px;
  background: none; color: var(--dim);
  font-family: var(--mono); font-size: 0.7rem;
  letter-spacing: 2px; border: 1px solid var(--bdr);
  border-radius: 8px; cursor: pointer;
}
.pause-quit:hover { color: var(--rd); border-color: var(--rd); }

/* ── GAME OVER ── */
#screen-gameover {
  background: var(--bg);
  gap: 0;
  padding: 20px;
}
.go-title {
  font-family: var(--mono);
  font-size: 0.6rem; letter-spacing: 4px;
  color: var(--rd); text-transform: uppercase;
  margin-bottom: 8px;
}
.go-score {
  font-size: clamp(3rem, 12vw, 5rem);
  font-weight: 900; color: var(--cy);
  font-family: var(--mono);
  line-height: 1;
  margin-bottom: 4px;
}
.go-label {
  font-family: var(--mono); font-size: 0.6rem;
  letter-spacing: 3px; color: var(--dim);
  margin-bottom: 20px;
}
.go-stats {
  display: flex; gap: 24px;
  margin-bottom: 28px;
  font-family: var(--mono); font-size: 0.7rem;
}
.go-stat { text-align: center; }
.go-stat .v { font-size: 1.4rem; font-weight: 700; color: var(--yl); display: block; }
.go-stat .l { color: var(--dim); font-size: 0.55rem; letter-spacing: 2px; }
.go-btn {
  width: 100%; max-width: 320px;
  padding: 14px; background: var(--cy); color: #000;
  font-family: var(--mono); font-size: 0.9rem;
  font-weight: 700; letter-spacing: 3px;
  border: none; border-radius: 8px;
  cursor: pointer; margin-bottom: 10px;
  transition: 0.1s;
}
.go-btn:hover { background: #33faff; }
.go-btn.sec {
  background: none; color: var(--dim);
  border: 1px solid var(--bdr); font-size: 0.7rem;
  letter-spacing: 2px;
}
.go-btn.sec:hover { color: var(--mg); border-color: var(--mg); }

/* ── HINTS HIDDEN ── */
.hints-off .read { opacity: 0; }

/* ── MOBILE ────────────────────────────────── */

/* Tiles: never wider than viewport */
.tile { max-width: calc(100vw - 20px); }

@media (max-width: 480px) {
  /* HUD — strip to essentials on narrow screens */
  #hud { padding: 0 10px; gap: 0; height: 44px; }
  .hud-brand { font-size: 0.7rem; }
  .hud-item { margin-left: 8px; font-size: 0.6rem; }
  .hud-item.combo { display: none; }
  .hud-hint-toggle { display: none; }
  .pause-btn { margin-left: 8px; padding: 3px 8px; font-size: 0.65rem; }

  /* Input area — taller for touch */
  #input-area { height: 72px; padding: 0 10px; gap: 8px; }
  #ans { font-size: 1.1rem; padding: 10px 12px; }
  #submit-btn { padding: 10px 14px; font-size: 0.7rem; min-width: 64px; }

  /* Stage — match new input height */
  #stage { bottom: 72px; }
  #miss-area { bottom: 78px; }

  /* Start screen — hide subtitle text inside direction pills */
  .start-block .pill small { display: none; }

  /* Tighter start screen padding on phones */
  #screen-start { padding: 16px; }
  .start-block { margin-bottom: 12px; }
  .start-btn { padding: 14px; }

  /* Tiles — much smaller on mobile */
  .tile { padding: 5px 9px; min-width: 52px; border-radius: 7px; }
  .tile .ja { font-size: clamp(1rem, 3.2vw, 1.3rem); }
  .tile .read { font-size: 0.52rem; margin-top: 2px; }
  .tile .cat-badge { font-size: 0.4rem; margin-top: 1px; }
}