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

body {
  background: #0a0a1a;
  font-family: 'Hiragino Maru Gothic Pro', 'Rounded Mplus 1c', sans-serif;
  color: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* ---- Screens ---- */
.screen { display: none; width: 100%; max-width: 480px; flex-direction: column; align-items: center; }
.screen.active { display: flex; }

/* ---- Title ---- */
#screen-title {
  justify-content: center;
  min-height: 100vh;
  padding: 24px 20px;
  gap: 20px;
}
.logo { font-size: 2rem; font-weight: 900; text-shadow: 0 0 20px rgba(255,200,50,0.5); }
.title-hs {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 12px 32px;
  text-align: center;
}
.hs-label { display: block; font-size: 0.75rem; color: #888; }
.title-hs span:last-child { font-size: 2rem; font-weight: 900; color: #FFD54F; }
.title-hint { color: #aaa; font-size: 0.9rem; text-align: center; }

/* ---- Game screen ---- */
#screen-game {
  height: 100vh;
  justify-content: flex-start;
  padding: 0;
}

.game-hud {
  width: 100%;
  display: flex;
  justify-content: space-around;
  padding: 6px 16px;
  background: rgba(0,0,0,0.4);
  flex-shrink: 0;
}
.hud-item { display: flex; flex-direction: column; align-items: center; }
.hud-label { font-size: 0.65rem; color: #888; }
.hud-item span:last-child { font-size: 1.2rem; font-weight: 800; color: #fff; }

.effects-bar {
  width: 100%;
  padding: 0 12px;
  height: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
}
.effect-tag {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 8px;
  font-weight: 700;
}
.effect-tag.wide { background: #43A047; color: #fff; }
.effect-tag.slow { background: #1565C0; color: #fff; }

#canvas-wrap {
  flex: 1;
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

#canvas {
  display: block;
  touch-action: none;
}

/* Canvas overlays */
.canvas-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,0.65);
}
.canvas-overlay.hidden { display: none; }
.overlay-msg {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.6;
}
.overlay-msg small { font-size: 0.9rem; font-weight: 400; color: #ccc; }

/* ---- Gameover ---- */
#screen-gameover {
  justify-content: center;
  min-height: 100vh;
  padding: 24px 20px;
}
.go-inner {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 24px;
  padding: 32px;
  width: 100%;
  max-width: 300px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.go-emoji { font-size: 3rem; }
.go-title { font-size: 1.6rem; font-weight: 900; color: #FF5252; }
.go-stats { display: flex; justify-content: space-around; }
.go-stat { display: flex; flex-direction: column; align-items: center; }
.go-label { font-size: 0.7rem; color: #888; }
.go-val { font-size: 1.3rem; font-weight: 800; }
.go-val.big { font-size: 2.2rem; color: #FFD54F; }

/* ---- Buttons ---- */
.btn-primary, .btn-secondary {
  display: block;
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: 14px;
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, #FFD54F, #FF8F00);
  color: #fff;
  box-shadow: 0 4px 0 #e65100;
}
.btn-primary:active { transform: translateY(3px); box-shadow: 0 1px 0 #e65100; }
.btn-secondary {
  background: rgba(255,255,255,0.07);
  color: #aaa;
  border: 1px solid rgba(255,255,255,0.12);
}
.btn-secondary:active { background: rgba(255,255,255,0.14); }