* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --bg: #1a1a2e;
  --primary: #e94560;
  --primary-shadow: rgba(233, 69, 96, 0.4);
  --text: #eee;
  --card: rgba(255, 255, 255, 0.08);
  --radius: 16px;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  color: var(--text);
  user-select: none;
  touch-action: none;
}

.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}
.screen.active { display: flex; }

/* ---- Title ---- */
.logo {
  font-size: clamp(2.4rem, 9vw, 3.8rem);
  font-weight: 900;
  text-align: center;
  line-height: 1.15;
  color: var(--primary);
  text-shadow: 3px 3px 0 rgba(233, 69, 96, 0.3);
  margin-bottom: 24px;
}

.title-hs {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 36px;
  border-radius: var(--radius);
  margin-bottom: 28px;
}
.title-hs span:last-child {
  font-size: 2rem;
  font-weight: 800;
  color: #FFE66D;
}

.label {
  font-size: 0.62rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  text-align: center;
}

.hint {
  margin-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.35);
  line-height: 1.8;
}

/* ---- Buttons ---- */
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 16px 48px;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 5px 18px var(--primary-shadow);
  transition: transform 0.1s;
  min-height: 52px;
}
.btn-primary:active { transform: scale(0.96); }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 50px;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 48px;
  transition: transform 0.1s;
}
.btn-secondary:active { transform: scale(0.96); }

.btn-share {
  background: #000;
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 48px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
  transition: transform 0.1s;
}
.btn-share:active { transform: scale(0.96); }

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

.game-hud {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  width: 100%;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.35);
  flex-shrink: 0;
}

.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hud-item span:last-child {
  font-size: 1.4rem;
  font-weight: 800;
  color: #FFE66D;
}

#canvas-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  overflow: hidden;
  padding: 8px;
}

#canvas {
  display: block;
  cursor: pointer;
  border-radius: 8px;
}

/* ---- Result Screens ---- */
.result-emoji {
  font-size: 4rem;
  margin-bottom: 12px;
}

.result-title {
  font-size: clamp(1.8rem, 7vw, 2.6rem);
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 20px;
}

.result-card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 16px 48px;
  margin-bottom: 24px;
  min-width: 240px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 8px 0;
  font-size: 1.05rem;
}
.result-row span:last-child { font-weight: 800; }
.result-hs span:last-child { color: #FFE66D; }

.btn-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}