/* BTS Quiz Room - purple concert night, ARMY-bomb glow, and pixel stage detail */
:root,
body[data-room="bts"],
.qr-room-bts {
  --qr-bg: #07050d; --qr-bg-elev: #151023; --qr-fg: #f8f3ff; --qr-fg-dim: #b8a8cf;
  --qr-accent: #7e4ed8; --qr-accent-dim: #50307d; --qr-warn: #f4d37a; --qr-danger: #e45f88; --qr-radius: 6px;
  --qr-bts-ink: #07050d; --qr-bts-night: #151023; --qr-bts-deep: #2a1846; --qr-bts-purple: #50307d;
  --qr-bts-violet: #7e4ed8; --qr-bts-lavender: #b884ff; --qr-bts-white: #f8f3ff; --qr-bts-cyan: #76d7ff; --qr-bts-gold: #f4d37a; --qr-bts-silver: #8b8f9e;
  --qr-bts-scene-choreo: url("objects/scene_choreo.png"); --qr-bts-scene-verse: url("objects/scene_verse.png"); --qr-bts-scene-fancall: url("objects/scene_fancall.png");
  --qr-bts-scene-vlive: url("objects/scene_vlive.png"); --qr-bts-scene-encore: url("objects/scene_encore.png");
  --qr-bts-prop-mic: url("objects/mic.png"); --qr-bts-prop-headset: url("objects/headset.png"); --qr-bts-prop-light: url("objects/stage_light.png"); --qr-bts-prop-setlist: url("objects/setlist.png");
  --qr-bts-prop-camera: url("objects/fancam_camera.png"); --qr-bts-prop-army: url("objects/army_bomb.png"); --qr-bts-prop-heart: url("objects/purple_heart.png"); --qr-bts-prop-lyric: url("objects/lyric_sheet.png");
  --qr-bts-prop-phone: url("objects/phone.png"); --qr-bts-prop-card: url("objects/photocard.png"); --qr-bts-prop-marker: url("objects/dance_marker.png"); --qr-bts-prop-ticket: url("objects/concert_ticket.png");
  --qr-bts-scene-image: var(--qr-bts-scene-choreo); --qr-bts-prop-image: var(--qr-bts-prop-army); --qr-bts-scene-border: var(--qr-bts-lavender); --qr-choice-icon: var(--qr-bts-prop-army);
}
body[data-room="bts"] {
  background:
    radial-gradient(circle at 50% -140px, rgba(126, 78, 216, 0.28), transparent 32rem),
    radial-gradient(circle at 18% 18%, rgba(118, 215, 255, 0.10), transparent 18rem),
    linear-gradient(180deg, #151023 0%, var(--qr-bg) 58%, #050308 100%);
  color: var(--qr-fg);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
body[data-room="bts"] #qr-root {
  max-width: 500px;
}
body[data-room="bts"] .qr-stage {
  gap: 14px;
}
body[data-room="bts"] .qr-progress {
  color: var(--qr-bts-gold);
  letter-spacing: 0;
  text-shadow: 0 0 16px rgba(184, 132, 255, 0.38);
}
body[data-room="bts"] .qr-board {
  position: relative;
  overflow: hidden;
  min-height: 380px;
  padding: 16px;
  background:
    linear-gradient(180deg, rgba(184, 132, 255, 0.09), transparent 34%),
    linear-gradient(180deg, var(--qr-bg-elev) 0%, var(--qr-bg) 100%);
  border: 1px solid rgba(184, 132, 255, 0.36);
  border-radius: var(--qr-radius);
  box-shadow:
    inset 0 0 0 1px rgba(248, 243, 255, 0.05),
    0 14px 38px rgba(5, 3, 8, 0.46);
  animation: qr-bts-scene-in 360ms ease-out both;
}
body[data-room="bts"] .qr-board::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 92px;
  width: 70px;
  height: 70px;
  background: var(--qr-bts-prop-image) center / contain no-repeat;
  image-rendering: pixelated;
  opacity: 0.86;
  pointer-events: none;
  filter: drop-shadow(0 6px 0 rgba(7, 5, 13, 0.42));
  animation: qr-bts-prop-bob 2800ms ease-in-out infinite;
}
body[data-room="bts"] .qr-scene {
  display: block;
  width: 100%;
  max-height: 170px;
  object-fit: cover;
  margin: 0 0 16px;
  border: 1px solid var(--qr-bts-scene-border);
  border-radius: var(--qr-radius);
  background: var(--qr-bg);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  box-shadow: inset 0 0 0 1px rgba(248, 243, 255, 0.06);
  animation: qr-bts-scene-in 320ms ease-out both;
}
body[data-room="bts"] .qr-choice-prompt {
  position: relative;
  margin: 0 0 14px;
  color: var(--qr-fg-dim);
}
body[data-room="bts"] .qr-choice-prompt h2,
body[data-room="bts"] .qr-choice-prompt h3,
body[data-room="bts"] .qr-board h2,
body[data-room="bts"] .qr-board h3,
body[data-room="bts"] .qr-bts-enc-title,
body[data-room="bts"] .qr-bts-encore-title {
  font-family: 'Press Start 2P', monospace;
  letter-spacing: 0;
  line-height: 1.45;
  text-transform: uppercase;
}
body[data-room="bts"] .qr-choice-prompt h2 {
  margin: 0 0 8px;
  color: var(--qr-bts-lavender);
  font-size: 14px;
}
body[data-room="bts"] .qr-choice-prompt p {
  margin: 0;
  color: var(--qr-fg-dim);
  font-size: 14px;
  line-height: 1.55;
}
body[data-room="bts"] .qr-choice-list {
  display: grid;
  gap: 9px;
  margin: 0 0 12px;
}
body[data-room="bts"] .qr-choice {
  position: relative;
  overflow: hidden;
  min-height: 64px;
  padding: 12px 13px 12px 56px;
  background:
    linear-gradient(135deg, rgba(126, 78, 216, 0.12), rgba(118, 215, 255, 0.03)),
    var(--qr-bts-ink);
  border: 1px solid rgba(184, 132, 255, 0.42);
  border-left: 4px solid var(--qr-bts-purple);
  border-radius: var(--qr-radius);
  color: var(--qr-fg);
  box-shadow: inset 0 0 0 1px rgba(248, 243, 255, 0.04);
  transition: border-color 140ms ease, background 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}
body[data-room="bts"] .qr-choice::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 50%;
  width: 30px;
  height: 30px;
  transform: translateY(-50%);
  background: var(--qr-choice-icon) center / contain no-repeat;
  image-rendering: pixelated;
  filter: drop-shadow(0 0 8px rgba(184, 132, 255, 0.36));
  animation: qr-bts-icon-bob 2.6s ease-in-out infinite;
}
body[data-room="bts"] .qr-choice::after {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 48px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(248, 243, 255, 0.36), transparent);
}
body[data-room="bts"] .qr-choice:hover:not(:disabled),
body[data-room="bts"] .qr-choice:focus-visible {
  border-color: var(--qr-bts-gold);
  box-shadow: 0 0 0 2px rgba(244, 211, 122, 0.16);
  animation: qr-bts-choice-lift 180ms ease-out both;
}
body[data-room="bts"] .qr-choice.picked {
  background:
    linear-gradient(135deg, rgba(126, 78, 216, 0.26), rgba(118, 215, 255, 0.09)),
    var(--qr-bts-deep);
  border-color: var(--qr-bts-lavender);
  border-left-color: var(--qr-bts-gold);
  color: var(--qr-fg);
  box-shadow:
    inset 0 0 0 1px rgba(248, 243, 255, 0.12),
    0 0 18px rgba(184, 132, 255, 0.24);
}
body[data-room="bts"] .qr-choice .qr-choice-name {
  display: block;
  margin-bottom: 5px;
  color: var(--qr-bts-gold);
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  letter-spacing: 0;
  line-height: 1.45;
}
body[data-room="bts"] .qr-choice span:not(.qr-choice-name) {
  display: block;
  color: var(--qr-fg-dim);
  font-size: 12px;
  line-height: 1.45;
}
body[data-room="bts"] .qr-btn {
  min-height: 44px;
  border: 1px solid rgba(248, 243, 255, 0.18);
  background: linear-gradient(180deg, #b884ff, var(--qr-accent));
  color: #07050d;
  box-shadow: 0 5px 0 var(--qr-accent-dim);
  letter-spacing: 0;
}
body[data-room="bts"] .qr-btn:hover:not(:disabled),
body[data-room="bts"] .qr-btn:focus-visible {
  filter: none;
  transform: translateY(-1px);
  box-shadow: 0 6px 0 var(--qr-accent-dim), 0 0 18px rgba(184, 132, 255, 0.32);
}
body[data-room="bts"] .qr-btn:disabled {
  opacity: 0.55;
  transform: none;
  box-shadow: none;
}
body[data-room="bts"] .qr-counter,
body[data-room="bts"] .qr-status {
  margin: 2px 0 12px;
  padding: 9px 10px;
  color: var(--qr-fg-dim);
  background: rgba(126, 78, 216, 0.08);
  border: 1px solid rgba(184, 132, 255, 0.24);
  border-radius: var(--qr-radius);
  letter-spacing: 0;
}
body[data-room="bts"] .qr-counter span,
body[data-room="bts"] .qr-status.win,
body[data-room="bts"] .qr-status span {
  color: var(--qr-bts-gold);
}
body[data-room="bts"] .qr-status.warn { color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-status.bad { color: var(--qr-danger); }
body[data-room="bts"] .qr-outcome {
  position: relative;
  margin-top: 13px;
  padding: 13px 14px;
  color: var(--qr-fg);
  background: rgba(7, 5, 13, 0.84);
  border: 1px solid rgba(184, 132, 255, 0.42);
  border-left: 4px solid var(--qr-bts-gold);
  border-radius: var(--qr-radius);
  box-shadow: inset 0 0 0 1px rgba(248, 243, 255, 0.04);
}
body[data-room="bts"] .qr-hint {
  color: var(--qr-bts-gold);
  background: rgba(126, 78, 216, 0.09);
  border-left: 3px solid var(--qr-bts-lavender);
  padding: 10px 12px;
  border-radius: var(--qr-radius);
}
body[data-room="bts"] .qr-resume-banner {
  background: linear-gradient(180deg, rgba(42, 24, 70, 0.94), rgba(7, 5, 13, 0.94));
  border-color: var(--qr-bts-gold);
  color: var(--qr-fg);
}
/* Scene cards keyed to the five BTS sequence entries */
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done),
body[data-room="bts"] .qr-board:has(.qr-bts-choreo) {
  --qr-bts-scene-image: var(--qr-bts-scene-choreo);
  --qr-bts-prop-image: var(--qr-bts-prop-marker);
  --qr-bts-scene-border: var(--qr-bts-lavender);
  --qr-choice-icon: var(--qr-bts-prop-marker);
}
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done),
body[data-room="bts"] .qr-board:has(.qr-bts-verse) {
  --qr-bts-scene-image: var(--qr-bts-scene-verse);
  --qr-bts-prop-image: var(--qr-bts-prop-lyric);
  --qr-bts-scene-border: var(--qr-bts-cyan);
  --qr-choice-icon: var(--qr-bts-prop-mic);
}
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done),
body[data-room="bts"] .qr-board:has(.qr-bts-fancall) {
  --qr-bts-scene-image: var(--qr-bts-scene-fancall);
  --qr-bts-prop-image: var(--qr-bts-prop-phone);
  --qr-bts-scene-border: var(--qr-bts-gold);
  --qr-choice-icon: var(--qr-bts-prop-heart);
}
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done),
body[data-room="bts"] .qr-board:has(.qr-bts-vlive) {
  --qr-bts-scene-image: var(--qr-bts-scene-vlive);
  --qr-bts-prop-image: var(--qr-bts-prop-card);
  --qr-bts-scene-border: var(--qr-bts-violet);
  --qr-choice-icon: var(--qr-bts-prop-phone);
}
body[data-room="bts"] .qr-board:has(.qr-bts-enc-done),
body[data-room="bts"] .qr-board:has(.qr-bts-encore-done),
body[data-room="bts"] .qr-board:has(.qr-bts-encore) {
  --qr-bts-scene-image: var(--qr-bts-scene-encore);
  --qr-bts-prop-image: var(--qr-bts-prop-army);
  --qr-bts-scene-border: var(--qr-bts-white);
  --qr-choice-icon: var(--qr-bts-prop-army);
}
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice-prompt,
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice-prompt,
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice-prompt,
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice-prompt,
body[data-room="bts"] .qr-board:has(.qr-bts-enc-done) > .qr-choice-prompt,
body[data-room="bts"] .qr-board:has(.qr-bts-encore-done) > .qr-choice-prompt {
  min-height: 224px;
  padding: 138px 14px 14px;
  overflow: hidden;
  background: rgba(21, 16, 35, 0.72);
  border: 1px solid rgba(184, 132, 255, 0.30);
  border-radius: var(--qr-radius);
}
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice-prompt::before,
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice-prompt::before,
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice-prompt::before,
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice-prompt::before,
body[data-room="bts"] .qr-board:has(.qr-bts-enc-done) > .qr-choice-prompt::before,
body[data-room="bts"] .qr-board:has(.qr-bts-encore-done) > .qr-choice-prompt::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 120px;
  background-image:
    linear-gradient(180deg, rgba(7, 5, 13, 0.03), rgba(7, 5, 13, 0.18)),
    var(--qr-bts-scene-image);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 100% 120px;
  border-bottom: 1px solid var(--qr-bts-scene-border);
  image-rendering: pixelated;
  animation: qr-bts-scene-in 320ms ease-out both;
}
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) > .qr-scene,
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) > .qr-scene,
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) > .qr-scene,
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) > .qr-scene,
body[data-room="bts"] .qr-board:has(.qr-bts-enc-done) > .qr-scene,
body[data-room="bts"] .qr-board:has(.qr-bts-encore-done) > .qr-scene {
  display: none;
}
/* Puzzle 1: bts-choreo */
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice-prompt h2 { color: var(--qr-bts-lavender); }
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice-list { grid-template-columns: 1fr 1fr; }
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice { min-height: 68px; }
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="killing"],
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="center"],
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="break"] { --qr-choice-icon: var(--qr-bts-prop-light); border-left-color: var(--qr-bts-lavender); }
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="intro"],
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="mirror"] { --qr-choice-icon: var(--qr-bts-prop-marker); border-left-color: var(--qr-bts-cyan); }
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="harmony"],
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="unit"],
body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice[data-id="sync"] { --qr-choice-icon: var(--qr-bts-prop-army); border-left-color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-bts-choreo { display: flex; flex-direction: column; gap: 14px; }
body[data-room="bts"] .qr-bts-choreo-prompt h2 { color: var(--qr-bts-lavender); font-size: 16px; margin: 0 0 6px; }
body[data-room="bts"] .qr-bts-choreo-prompt p { color: var(--qr-fg-dim); font-size: 14px; line-height: 1.55; margin: 0; }
body[data-room="bts"] .qr-bts-choreo-status { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; color: var(--qr-fg-dim); font-family: 'Press Start 2P', monospace; font-size: 10px; letter-spacing: 0; text-align: center; }
body[data-room="bts"] .qr-bts-choreo-status strong { color: var(--qr-bts-gold); display: block; font-size: 13px; margin-top: 3px; }
body[data-room="bts"] .qr-bts-choreo-track { background: linear-gradient(90deg, var(--qr-bts-ink), var(--qr-bts-deep)); border-color: var(--qr-bts-lavender); border-radius: var(--qr-radius); box-shadow: inset 0 0 0 1px rgba(248, 243, 255, 0.06); }
body[data-room="bts"] .qr-bts-choreo-now { background: var(--qr-bts-gold); box-shadow: 0 0 16px rgba(244, 211, 122, 0.70); }
body[data-room="bts"] .qr-bts-choreo-marker { background: var(--qr-bts-lavender); box-shadow: 0 0 14px rgba(184, 132, 255, 0.58); }
body[data-room="bts"] .qr-bts-choreo-marker.perfect { background: var(--qr-bts-cyan); box-shadow: 0 0 16px rgba(118, 215, 255, 0.78); }
body[data-room="bts"] .qr-bts-choreo-marker.good { background: var(--qr-bts-gold); }
body[data-room="bts"] .qr-bts-choreo-feedback { color: var(--qr-bts-gold); min-height: 22px; text-shadow: 0 0 12px rgba(184, 132, 255, 0.32); }
body[data-room="bts"] .qr-bts-choreo-button { min-height: 56px; border: 1px solid rgba(248, 243, 255, 0.20); border-radius: var(--qr-radius); background: linear-gradient(180deg, var(--qr-bts-lavender), var(--qr-bts-violet)); color: var(--qr-bts-ink); box-shadow: 0 6px 0 var(--qr-accent-dim); }
body[data-room="bts"] .qr-bts-choreo-actions { display: flex; gap: 8px; }
body[data-room="bts"] .qr-bts-choreo-result { background: rgba(21, 16, 35, 0.86); border: 1px solid rgba(184, 132, 255, 0.32); color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-bts-choreo-done { background: linear-gradient(180deg, #b884ff, #7e4ed8); }
/* Puzzle 2: bts-verse */
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice-prompt h2 { color: var(--qr-bts-cyan); }
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice {
  background: linear-gradient(90deg, rgba(118, 215, 255, 0.08), rgba(126, 78, 216, 0.05)), var(--qr-bts-ink);
}
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="rap"],
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="cadence"],
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="producer"] { --qr-choice-icon: var(--qr-bts-prop-headset); border-left-color: var(--qr-bts-cyan); }
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="hook"],
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="high"],
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="adlib"] { --qr-choice-icon: var(--qr-bts-prop-mic); border-left-color: var(--qr-bts-white); }
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="lyric"],
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="harmony"],
body[data-room="bts"] .qr-board:has(.qr-bts-verse-done) .qr-choice[data-id="unison"] { --qr-choice-icon: var(--qr-bts-prop-lyric); border-left-color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-bts-verse-done { background: linear-gradient(180deg, #76d7ff, #50307d); color: #07050d; }
/* Puzzle 3: bts-fancall */
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice-prompt h2 { color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done)::after {
  top: 84px;
  width: 78px;
  height: 78px;
}
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice { min-height: 66px; }
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice[data-id="listen"],
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice[data-id="calm"] { --qr-choice-icon: var(--qr-bts-prop-phone); border-left-color: var(--qr-bts-cyan); }
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice[data-id="joke"],
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice[data-id="heart"] { --qr-choice-icon: var(--qr-bts-prop-heart); border-left-color: var(--qr-bts-lavender); }
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice[data-id="photo"],
body[data-room="bts"] .qr-board:has(.qr-bts-fancall-done) .qr-choice[data-id="promise"] { --qr-choice-icon: var(--qr-bts-prop-card); border-left-color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-bts-fancall-done { background: linear-gradient(180deg, #f4d37a, #7e4ed8); color: #07050d; }
/* Puzzle 4: bts-vlive */
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice-prompt h2 { color: var(--qr-bts-violet); }
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice-list { gap: 8px; }
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice[data-id="chat"],
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice[data-id="live"] { --qr-choice-icon: var(--qr-bts-prop-phone); border-left-color: var(--qr-bts-cyan); }
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice[data-id="playlist"],
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice[data-id="story"] { --qr-choice-icon: var(--qr-bts-prop-mic); border-left-color: var(--qr-bts-lavender); }
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice[data-id="quiet"],
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice[data-id="spoiler"],
body[data-room="bts"] .qr-board:has(.qr-bts-vlive-done) .qr-choice[data-id="cooking"] { --qr-choice-icon: var(--qr-bts-prop-ticket); border-left-color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-bts-vlive-done { background: linear-gradient(180deg, #7e4ed8, #2a1846); color: var(--qr-fg); }
/* Puzzle 5: bts-encore */
body[data-room="bts"] .qr-board:has(.qr-bts-enc-done) .qr-choice-prompt h2,
body[data-room="bts"] .qr-board:has(.qr-bts-encore-done) .qr-choice-prompt h2 {
  color: var(--qr-bts-white);
  text-shadow: 0 0 16px rgba(184, 132, 255, 0.44);
}
body[data-room="bts"] .qr-bts-enc-stage,
body[data-room="bts"] .qr-bts-encore-stage {
  padding: 12px;
  background: linear-gradient(180deg, rgba(126, 78, 216, 0.12), rgba(7, 5, 13, 0.38)), var(--qr-bts-ink);
  border: 1px solid rgba(184, 132, 255, 0.26);
  border-radius: var(--qr-radius);
}
body[data-room="bts"] .qr-bts-enc-title,
body[data-room="bts"] .qr-bts-encore-title {
  margin: 0 0 7px;
  color: var(--qr-bts-gold);
  font-size: 12px;
}
body[data-room="bts"] .qr-bts-enc-step,
body[data-room="bts"] .qr-bts-encore-step { color: var(--qr-bts-gold); }
body[data-room="bts"] .qr-bts-enc-stage .qr-choice:nth-child(2n),
body[data-room="bts"] .qr-bts-encore-stage .qr-choice:nth-child(2n) { --qr-choice-icon: var(--qr-bts-prop-light); border-left-color: var(--qr-bts-lavender); }
body[data-room="bts"] .qr-bts-enc-stage .qr-choice:nth-child(3n),
body[data-room="bts"] .qr-bts-encore-stage .qr-choice:nth-child(3n) { --qr-choice-icon: var(--qr-bts-prop-mic); border-left-color: var(--qr-bts-cyan); }
body[data-room="bts"] .qr-bts-enc-done,
body[data-room="bts"] .qr-bts-encore-done { background: linear-gradient(180deg, #f8f3ff, #b884ff); color: #07050d; }
/* Result screen */
body[data-room="bts"] .qr-result { color: var(--qr-fg); }
body[data-room="bts"] .qr-result-sprite {
  border: 4px solid var(--qr-bts-lavender);
  background: radial-gradient(circle, rgba(184, 132, 255, 0.20), transparent 62%), var(--qr-bts-ink);
  box-shadow:
    0 0 0 2px rgba(248, 243, 255, 0.18),
    0 10px 0 var(--qr-accent-dim),
    0 0 26px rgba(184, 132, 255, 0.36);
  animation: qr-bts-sprite-in 560ms cubic-bezier(.22, 1.2, .36, 1) both;
}
body[data-room="bts"] .qr-result-eyebrow,
body[data-room="bts"] .qr-result-dossier-eyebrow { color: var(--qr-bts-gold); letter-spacing: 0; }
body[data-room="bts"] .qr-result-name {
  color: var(--qr-bts-white) !important;
  text-shadow: 0 0 16px rgba(184, 132, 255, 0.34);
  letter-spacing: 0;
}
body[data-room="bts"] .qr-result-tagline { color: var(--qr-bts-lavender); }
body[data-room="bts"] .qr-result-desc,
body[data-room="bts"] .qr-result-runner { color: var(--qr-fg-dim); }
body[data-room="bts"] .qr-result-receipts.qr-result-dossier {
  background: linear-gradient(180deg, rgba(126, 78, 216, 0.12), rgba(21, 16, 35, 0.96)), var(--qr-bg-elev);
  border-color: rgba(184, 132, 255, 0.34);
}
body[data-room="bts"] .qr-btn-secondary,
body[data-room="bts"] .qr-result-cta {
  color: var(--qr-bts-gold);
  border-color: rgba(184, 132, 255, 0.34);
  background: rgba(126, 78, 216, 0.06);
}
@keyframes qr-bts-scene-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes qr-bts-prop-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
@keyframes qr-bts-icon-bob { 0%, 100% { transform: translateY(-50%); } 50% { transform: translateY(calc(-50% - 3px)); } }
@keyframes qr-bts-choice-lift { from { transform: translateY(0); } to { transform: translateY(-2px); } }
@keyframes qr-bts-sprite-in { from { opacity: 0; transform: translateY(12px) scale(0.92); } to { opacity: 1; transform: translateY(0) scale(1); } }
@media (max-width: 520px) {
  body[data-room="bts"] #qr-root { padding-left: 12px; padding-right: 12px; }
  body[data-room="bts"] .qr-board { min-height: 360px; padding: 16px 12px; }
  body[data-room="bts"] .qr-board::after { top: 82px; right: 8px; width: 58px; height: 58px; }
  body[data-room="bts"] .qr-scene { max-height: 154px; }
  body[data-room="bts"] .qr-choice-prompt h2, body[data-room="bts"] .qr-board h2 { font-size: 12px; }
  body[data-room="bts"] .qr-choice-prompt p, body[data-room="bts"] .qr-choice { font-size: 12px; }
  body[data-room="bts"] .qr-board:has(.qr-bts-choreo-done) .qr-choice-list { grid-template-columns: 1fr; }
  body[data-room="bts"] .qr-choice { min-height: 64px; padding: 12px 12px 12px 52px; }
  body[data-room="bts"] .qr-choice::before { left: 12px; width: 28px; height: 28px; }
  body[data-room="bts"] .qr-btn, body[data-room="bts"] .qr-btn-sm, body[data-room="bts"] .qr-choice, body[data-room="bts"] .qr-counter, body[data-room="bts"] .qr-status { min-height: 44px; }
  body[data-room="bts"] .qr-bts-enc-stage, body[data-room="bts"] .qr-bts-encore-stage { padding: 10px; }
  body[data-room="bts"] .qr-result-sprite { width: 192px; height: 192px; }
}
@media (prefers-reduced-motion: reduce) {
  body[data-room="bts"] *, body[data-room="bts"] *::before, body[data-room="bts"] *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}