/* 오락실 게임 공통 화면(무대 · 시작/끝 화면 · 순위표). 게임마다 --ac(강조색)만 바꿔 쓴다. */
.arc { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 28px; align-items: start; margin-top: 4px; }
@media (max-width: 860px) { .arc { grid-template-columns: 1fr; gap: 20px; } }

.arc-stage {
  --ac: #ff6369;
  position: relative; overflow: hidden; border-radius: 20px; background: #0b0d18;
  width: min(480px, calc((100svh - 140px) * 9 / 14)); aspect-ratio: 9 / 14; margin: 0 auto;
  box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 18px 50px -18px rgba(0,0,0,.45);
  touch-action: none; user-select: none; -webkit-user-select: none; -webkit-tap-highlight-color: transparent;
}
@media (max-width: 860px) { .arc-stage { width: min(100%, calc((100svh - 80px) * 9 / 14)); } }
.arc-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.arc-icon {
  position: absolute; z-index: 5; top: 10px; width: 36px; height: 36px; border-radius: 12px; border: 0;
  display: grid; place-items: center; cursor: pointer; font-size: 17px; line-height: 1;
  background: rgba(10, 12, 28, .38); color: #fff; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.arc-icon:hover { background: rgba(10, 12, 28, .55); }
.arc-mute { right: 10px; }
.arc-music { right: 52px; }
.arc-pause { right: 94px; }
.bgm-off { opacity: .45; filter: grayscale(1); }
.arc-icon[hidden] { display: none; }

/* 시작·끝 화면 */
.arc-ov {
  position: absolute; inset: 0; z-index: 4; display: flex; align-items: safe center; justify-content: center; padding: 22px 18px; overflow-y: auto;
  background: radial-gradient(120% 90% at 50% 30%, rgba(10,12,30,.35), rgba(6,8,20,.82));
  opacity: 0; pointer-events: none; transition: opacity .25s ease;
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
}
.arc-ov.show { opacity: 1; pointer-events: auto; }
.arc-card {
  width: 100%; max-width: 340px; text-align: center; color: #fff;
  transform: translateY(10px) scale(.98); transition: transform .3s cubic-bezier(.2,.9,.3,1.2);
}
.arc-ov.show .arc-card { transform: none; }
.arc-logo { font-size: clamp(30px, 9vw, 42px); font-weight: 900; letter-spacing: -.04em; line-height: 1.05; margin: 0 0 6px;
  text-shadow: 0 3px 0 rgba(0,0,0,.25), 0 0 28px color-mix(in srgb, var(--ac) 60%, transparent); }
.arc-logo em { font-style: normal; color: var(--ac); }
.arc-sub { margin: 0 0 18px; color: rgba(255,255,255,.78); font-size: 14px; line-height: 1.5; }
.arc-big { font-size: clamp(48px, 15vw, 72px); font-weight: 900; letter-spacing: -.04em; line-height: 1; margin: 2px 0 2px; font-variant-numeric: tabular-nums; }
.arc-unit { font-size: 15px; color: rgba(255,255,255,.7); margin: 0 0 12px; }
.arc-reason { display: inline-block; font-size: 13px; font-weight: 700; padding: 4px 10px; border-radius: 99px; background: rgba(255,255,255,.12); margin-bottom: 10px; }
.arc-badge { display: inline-block; font-size: 13px; font-weight: 800; padding: 5px 12px; border-radius: 99px; background: var(--ac); color: #fff; margin: 0 0 12px; animation: arc-pop .5s cubic-bezier(.2,.9,.3,1.6); }
.arc-badge.gold { background: linear-gradient(135deg, #ffd25a, #ff9f1a); color: #3b2300; }
@keyframes arc-pop { from { transform: scale(.4); opacity: 0; } to { transform: none; opacity: 1; } }
.arc-stats { display: flex; justify-content: center; gap: 18px; margin: 0 0 16px; font-size: 13px; color: rgba(255,255,255,.72); }
.arc-stats b { display: block; font-size: 17px; color: #fff; font-variant-numeric: tabular-nums; }

.arc-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px; width: 100%;
  padding: 0 20px; border: 0; border-radius: 16px; cursor: pointer; font: inherit; font-size: 18px; font-weight: 800;
  background: var(--ac); color: #fff; box-shadow: 0 5px 0 color-mix(in srgb, var(--ac) 55%, #000), 0 12px 30px -10px var(--ac);
  transition: transform .08s ease, box-shadow .08s ease, filter .15s;
}
.arc-btn:hover { filter: brightness(1.06); }
.arc-btn:active { transform: translateY(4px); box-shadow: 0 1px 0 color-mix(in srgb, var(--ac) 55%, #000); }
.arc-btn.pulse { animation: arc-pulse 1.6s ease-in-out infinite; }
@keyframes arc-pulse { 50% { transform: scale(1.035); } }
.arc-btn.ghost { background: rgba(255,255,255,.12); box-shadow: none; font-size: 15px; min-height: 42px; font-weight: 700; }
.arc-btn kbd { font: 600 11px/1 var(--mono, monospace); padding: 4px 6px; border-radius: 6px; background: rgba(0,0,0,.22); }
.arc-row { display: flex; gap: 8px; margin-top: 10px; }
.arc-row > * { flex: 1; }
.arc-keys { margin: 14px 0 0; font-size: 12px; color: rgba(255,255,255,.6); line-height: 1.6; }

.arc-save { display: flex; gap: 8px; margin: 0 0 12px; }
.arc-save input {
  flex: 1; min-width: 0; height: 44px; padding: 0 12px; border-radius: 12px; font: inherit; font-size: 15px;
  border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.1); color: #fff; outline: none;
}
.arc-save input:focus { border-color: var(--ac); background: rgba(255,255,255,.16); }
.arc-save input::placeholder { color: rgba(255,255,255,.5); }
.arc-save button { height: 44px; padding: 0 14px; border-radius: 12px; border: 0; font: inherit; font-size: 14px; font-weight: 800; cursor: pointer; background: #fff; color: #111; }
.arc-save button:disabled { opacity: .5; cursor: default; }
.arc-msg { min-height: 20px; margin: -4px 0 10px; font-size: 13px; color: rgba(255,255,255,.8); }
.arc-msg.ok { color: #7ef0a8; }
.arc-msg.err { color: #ffb0b0; }
.arc-extra { margin-top: 10px; }

/* 옆 설명·순위표 */
.arc-side { min-width: 0; }
.arc-side h1 { font-size: clamp(26px, 5vw, 34px); letter-spacing: -.03em; margin: 0 0 6px; display: flex; align-items: center; gap: 10px; }
.arc-side .lead { margin-bottom: 18px; }
.arc-how { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; margin: 0 0 22px; padding: 0; list-style: none; }
.arc-how li { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; font-size: 14px; line-height: 1.45; }
.arc-how b { display: block; font-size: 13px; color: var(--muted); font-weight: 600; margin-bottom: 2px; }

.arc-board { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 14px 14px 10px; }
.arc-board-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.arc-board-head h2 { margin: 0; font-size: 17px; }
.arc-tabs { display: inline-flex; padding: 3px; background: var(--surface-2); border-radius: 10px; }
.arc-tabs button { border: 0; background: none; font: inherit; font-size: 13px; font-weight: 700; padding: 5px 12px; border-radius: 8px; cursor: pointer; color: var(--muted); }
.arc-tabs button.on { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.arc-list { list-style: none; margin: 0; padding: 0; }
.arc-list li { display: grid; grid-template-columns: 30px minmax(0,1fr) auto; align-items: center; gap: 8px; padding: 8px 6px; border-top: 1px solid var(--line); font-size: 15px; }
.arc-list li:first-child { border-top: 0; }
.arc-list .rk { font-weight: 800; color: var(--muted); text-align: center; font-variant-numeric: tabular-nums; }
.arc-list li:nth-child(1) .rk { color: #e8a400; }
.arc-list li:nth-child(2) .rk { color: #8f9bb0; }
.arc-list li:nth-child(3) .rk { color: #c07a3d; }
.arc-list .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.arc-list .sc { font-weight: 800; font-variant-numeric: tabular-nums; }
.arc-list li.me { background: color-mix(in srgb, var(--accent) 10%, transparent); border-radius: 10px; }
.arc-list li.me .nm::after { content: " · 나"; color: var(--accent); font-size: 12px; font-weight: 700; }
.arc-list li.none { display: block; }
.arc-list .empty { display: block; text-align: center; color: var(--muted); font-size: 14px; padding: 18px 0; }
.arc-best { margin: 10px 2px 2px; font-size: 13px; color: var(--muted); }