:root { color-scheme: dark; }
* { box-sizing: border-box; touch-action: manipulation; }
html, body {
  margin: 0; padding: 0; height: 100dvh; overflow: hidden;
  background: #0a0a0a; color: #f5f5f5;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  -webkit-font-smoothing: antialiased; -webkit-tap-highlight-color: transparent;
  user-select: none; -webkit-user-select: none; overscroll-behavior: none;
}
main {
  height: 100%; max-width: 480px; margin: 0 auto; display: flex; flex-direction: column;
  padding: max(60px, env(safe-area-inset-top)) 12px max(20px, env(safe-area-inset-bottom)); gap: 12px;
}
.score-bar { display: flex; gap: 8px; align-items: stretch; }
.score-box { flex: 1; background: #161616; border: 1px solid #2a2a2a; border-radius: 12px; padding: 8px 12px; text-align: center; min-width: 0; }
.score-label { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: #a0a0a0; }
.score-val, .best-val { display: block; font-size: 22px; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; color: #f5f5f5; margin-top: 2px; line-height: 1.1; }
.new-btn { flex: 0 0 auto; font: inherit; color: #fff; background: #4f9eff; border: none; border-radius: 12px; padding: 0 18px; min-height: 56px; cursor: pointer; font-weight: 700; font-size: 14px; -webkit-tap-highlight-color: transparent; }
.new-btn:active { background: #3d8ae8; }

#game { flex: 1; display: flex; min-height: 0; }
.hm-wrap { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; min-height: 0; min-width: 0; }

/* 교수대 그림. 남는 세로 공간을 전부 먹고, 캔버스 픽셀은 layout()이 잡는다. */
.hm-stage { flex: 1 1 auto; min-height: 0; width: 100%; display: flex; align-items: center; justify-content: center; }
.hm-canvas { display: block; }

/* 남은 목숨: 채워진 칸이 남은 오답 횟수 */
.hm-lives { flex: 0 0 auto; display: flex; gap: 6px; align-items: center; justify-content: center; min-height: 14px; }
.hm-pip { width: 10px; height: 10px; border-radius: 999px; background: #4f9eff; transition: background 0.2s ease; }
.hm-pip.gone { background: #2a2f39; }

/* 단어: 밑줄 칸. 글자 크기는 단어 길이에 맞춰 layout()이 정한다. */
.hm-word { flex: 0 0 auto; display: flex; gap: 6px; justify-content: center; flex-wrap: nowrap; width: 100%; }
.hm-slot {
  display: flex; align-items: flex-end; justify-content: center;
  border-bottom: 3px solid #566072; padding-bottom: 3px; min-width: 0; flex: 0 1 auto;
  font-weight: 800; line-height: 1.05; text-transform: uppercase; letter-spacing: 0;
  color: #f5f5f5;
}
.hm-slot.blank { color: transparent; }
.hm-slot.miss { color: #ff6b6b; border-bottom-color: #ff6b6b; }

.hm-toast {
  flex: 0 0 auto; min-height: 20px; font-size: 13px; font-weight: 700; color: #ffd166;
  opacity: 0; transition: opacity 0.15s ease; text-align: center;
}
.hm-toast.shown { opacity: 1; }

.hm-kb { display: flex; flex-direction: column; gap: 6px; width: 100%; flex: 0 0 auto; }
.hm-kbrow { display: flex; gap: 5px; justify-content: center; }
.hm-key {
  flex: 1 1 0; min-width: 0; min-height: 48px; padding: 0 2px;
  font: inherit; font-size: 15px; font-weight: 700; text-transform: uppercase;
  color: #f5f5f5; background: #3a4150; border: none; border-radius: 6px; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.hm-key:active { background: #4c5568; }
.hm-key.hit { background: #4f9eff; color: #fff; }
.hm-key.miss { background: #23262d; color: #6b7382; }
.hm-key:disabled { cursor: default; }

@keyframes hm-shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-5px); }
  55% { transform: translateX(5px); } 80% { transform: translateX(-3px); } }
.hm-stage.shake { animation: hm-shake 0.3s ease; }

.overlay-sub { margin: -4px 0 4px; font-size: 14px; font-weight: 600; color: #a0a0a0; }
.overlay-howto { margin: 0 0 4px; font-size: 13px; line-height: 1.45; color: #b8b8b8; }
.overlay-card .start-btn, .overlay-card .cont-btn { background: #4f9eff; border-color: #4f9eff; }

.home-link, .hof-link {
  position: fixed; top: max(12px, env(safe-area-inset-top)); z-index: 10;
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px; background: rgba(0, 0, 0, 0.35); color: #fff; text-decoration: none;
  font-size: 20px; font-weight: 600; line-height: 1; -webkit-tap-highlight-color: transparent;
  touch-action: manipulation; backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  transition: background 0.15s ease; border: none; cursor: pointer; font-family: inherit;
}
.home-link { left: max(12px, env(safe-area-inset-left)); }
.hof-link { right: max(12px, env(safe-area-inset-right)); }
@media (hover: hover) { .home-link:hover, .hof-link:hover { background: rgba(0, 0, 0, 0.55); } }

.overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.55); display: flex; align-items: center; justify-content: center; z-index: 20; padding: 20px; backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); }
.overlay[hidden] { display: none; }
.overlay-card { background: #161616; border: 1px solid #2a2a2a; border-radius: 18px; padding: 24px 22px; display: flex; flex-direction: column; gap: 12px; align-items: center; text-align: center; min-width: 240px; max-width: 320px; width: 100%; }
.overlay-card h2 { margin: 0; font-size: 22px; font-weight: 800; letter-spacing: -0.02em; }
.overlay-score { margin: 0; font-size: clamp(22px, 8vw, 34px); font-weight: 800; letter-spacing: 0.04em; line-height: 1.1; text-transform: uppercase; word-break: break-all; }
.overlay-card button { font: inherit; color: #fff; background: rgba(255, 255, 255, 0.10); border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 999px; padding: 12px 20px; min-height: 44px; cursor: pointer; font-weight: 600; font-size: 14px; width: 100%; -webkit-tap-highlight-color: transparent; }
.overlay-card button:active { background: rgba(255, 255, 255, 0.18); }
.overlay-card .save-btn { background: #4f9eff; border-color: #4f9eff; }
.overlay-card .save-btn:active { background: #3d8ae8; }
.overlay-cap { margin: -6px 0 -6px; font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: #8b93a3; }