:root {
  --bg-dark: #0d1526;
  --bg-panel: #16223a;
  --charcoal: #1c2c47;
  --ember-orange: #ff7a29;
  --ember-red: #ff3d1a;
  --flame-yellow: #ffc233;
  --gold: #d9b364;
  --grill-green: #4caf6a;
  --text-main: #f5f1e6;
  --text-muted: #99a9c4;
  --danger: #ff4d4d;
}

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

html, body {
  margin: 0; padding: 0;
  min-height: 100%;
  min-height: 100dvh;
  background:
    radial-gradient(1.5px 1.5px at 20px 30px, rgba(255,255,255,.55), transparent),
    radial-gradient(1px 1px at 90px 80px, rgba(255,255,255,.35), transparent),
    radial-gradient(1.5px 1.5px at 150px 40px, rgba(255,255,255,.45), transparent),
    radial-gradient(1px 1px at 60px 130px, rgba(255,255,255,.3), transparent),
    radial-gradient(1.5px 1.5px at 180px 150px, rgba(255,255,255,.4), transparent),
    radial-gradient(ellipse at top, #1a2c4d 0%, #060a14 72%);
  background-size: 200px 200px, 200px 200px, 200px 200px, 200px 200px, 200px 200px, 100% 100%;
  background-repeat: repeat, repeat, repeat, repeat, repeat, no-repeat;
  background-color: #060a14;
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  overscroll-behavior: none;
  user-select: none;
}

#app {
  position: relative;
  max-width: 480px;
  margin: 0 auto;
  height: 100vh;
  height: 100dvh;
  padding: env(safe-area-inset-top, 0) 20px env(safe-area-inset-bottom, 0);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  overflow-y: auto;
}

.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  flex: 1;
  min-height: 0;
  padding: 68px 0 24px;
  animation: fadeIn .25s ease;
}
.screen.active { display: flex; }
#screen-result.active { justify-content: center; }
#screen-title.active { justify-content: center; }

.sound-toggle {
  position: absolute;
  top: max(14px, env(safe-area-inset-top, 0px));
  right: 14px;
  z-index: 40;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.15);
  background: rgba(22,34,58,.8);
  color: var(--text-main);
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.sound-toggle.muted { opacity: .5; }
.sound-toggle.label {
  width: auto;
  height: auto;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 700;
  gap: 4px;
  white-space: nowrap;
  background: rgba(255,122,41,.18);
  border-color: rgba(255,122,41,.5);
}

.app-footer {
  flex-shrink: 0;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  opacity: .85;
  padding: 12px 0 max(12px, env(safe-area-inset-bottom, 0px));
  letter-spacing: .4px;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* Title screen */
.event-tag {
  margin-top: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
}
.event-tag-line {
  height: 1px;
  width: 36px;
  background: linear-gradient(90deg, transparent, rgba(217,179,100,.6));
}
.event-tag-line:last-child { background: linear-gradient(90deg, rgba(217,179,100,.6), transparent); }
.event-tag-text {
  color: var(--gold);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  white-space: nowrap;
}
.campfire {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 28px auto -70px;
}
.flame-glow {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 460px;
  height: 460px;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse, rgba(255,150,50,.55) 0%, rgba(255,120,30,.2) 45%, transparent 72%);
  filter: blur(7px);
  animation: glowPulse 1.4s ease-in-out infinite;
}
@keyframes glowPulse {
  0%, 100% { opacity: .7; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: 1; transform: translate(-50%, -50%) scale(1.06); }
}
.fire-video {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 260px;
  height: 260px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  object-fit: cover;
  mix-blend-mode: screen;
}
.title-main {
  font-size: 44px; text-align: center; line-height: 1.25; margin: 8px 0 0; font-weight: 800;
  color: var(--gold);
  text-shadow: 0 0 24px rgba(217,179,100,.35);
}
.title-sub { text-align: center; color: var(--text-muted); margin: 16px 0 36px; line-height: 1.6; font-size: 17px; }

.btn {
  width: 100%;
  max-width: 320px;
  border: none;
  border-radius: 16px;
  padding: 16px;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 12px;
  cursor: pointer;
  transition: transform .1s ease;
  font-family: inherit;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .6; pointer-events: none; }
.result-actions {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
  max-width: 320px;
}
.result-actions .btn {
  flex: 1;
  width: auto;
  max-width: none;
  aspect-ratio: 0.9;
  padding: 8px 6px;
  font-size: 13px;
  margin-bottom: 0;
  line-height: 1.3;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--ember-orange), var(--ember-red));
  color: #fff;
  box-shadow: 0 6px 0 #a82a10, 0 10px 20px rgba(255,61,26,.35), inset 0 1px 0 rgba(255,255,255,.35);
  transform: translateY(0);
  transition: transform .1s ease, box-shadow .1s ease;
}
.btn-primary:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 #a82a10, 0 4px 10px rgba(255,61,26,.3), inset 0 1px 0 rgba(255,255,255,.2);
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid rgba(255,255,255,.15);
}
.btn-lg { padding: 18px; font-size: 18px; }
.btn-fire {
  width: 140px; height: 140px;
  max-width: 140px;
  border-radius: 50%;
  font-size: 22px;
  padding: 0;
  display: flex; align-items: center; justify-content: center;
  margin-left: auto; margin-right: auto;
}
.btn-row {
  display: flex;
  gap: 10px;
  width: 100%;
  max-width: 320px;
}
.btn-row .btn {
  width: auto;
  flex: 1;
  max-width: none;
}
.btn-sm { padding: 13px 8px; font-size: 14px; }

/* How to */
.section-title { font-size: 28px; font-weight: 800; margin: 8px 0 28px; }
.howto-list { list-style: none; padding: 0; margin: 0 0 32px; width: 100%; max-width: 400px; }
.howto-list li {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg-panel);
  border-radius: 16px;
  padding: 20px 20px;
  margin-bottom: 14px;
  line-height: 1.5;
  font-size: 16px;
}
.howto-icon { font-size: 36px; flex-shrink: 0; }

/* Stage header */
.stage-header {
  position: absolute;
  top: max(14px, env(safe-area-inset-top, 0px));
  left: 14px;
  z-index: 40;
  display: flex; align-items: center;
}
.stage-title {
  font-size: 26px; font-weight: 800; letter-spacing: .3px;
  color: var(--flame-yellow);
  text-align: center;
  margin: 4px 0 8px;
}
.stage-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}
.timer, .round-tag {
  font-variant-numeric: tabular-nums;
  font-weight: 800; font-size: 16px;
  background: var(--charcoal);
  padding: 4px 12px;
  border-radius: 999px;
}
.stage-instruction { color: var(--text-muted); font-size: 16px; margin: 12px 0 28px; text-align: center; }

/* Stage 1: unboxing intro */
.unbox-wrap {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  animation: fadeIn .3s ease;
}
.unbox-tap-target {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin: 12px 0 22px;
  animation: unboxFloat 2.4s ease-in-out infinite;
}
.unbox-tap-target:active .unbox-img { transform: scale(.93); }
.unbox-img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 460px;
  display: block;
  filter: drop-shadow(0 12px 28px rgba(0,0,0,.5));
  transition: transform .15s ease;
}
.unbox-pulse-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 70%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%) scale(1);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,150,50,.35) 0%, transparent 70%);
  animation: unboxPulse 1.8s ease-out infinite;
}
@keyframes unboxPulse {
  0%   { transform: translate(-50%, -50%) scale(.85); opacity: .8; }
  100% { transform: translate(-50%, -50%) scale(1.3); opacity: 0; }
}
@keyframes unboxFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
.s1-play {
  display: none;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}
.s1-play.active { display: flex; }

/* Stage 1: assembly */
.sequence-display {
  display: flex;
  width: 100%; max-width: 360px;
  margin: 0 auto 28px;
  padding: 14px 8px;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: 14px;
  overflow-x: auto;
}
.seq-row-zigzag { display: flex; align-items: flex-start; gap: 3px; margin: 0 auto; }
.seq-item.seq-up { margin-top: 0; }
.seq-item.seq-down { margin-top: 34px; }
.seq-arrow.zig { align-self: center; margin-top: 17px; }
.sequence-display .seq-item {
  font-size: 20px;
  width: 36px; height: 36px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-panel);
  border-radius: 9px;
  border: 2px solid rgba(255,255,255,.08);
}
.sequence-display .seq-item.done { opacity: .25; border-color: var(--grill-green); }
.sequence-display .seq-item.next { border-color: var(--flame-yellow); box-shadow: 0 0 10px rgba(255,194,51,.5); }
.seq-arrow { color: var(--text-muted); font-size: 16px; font-weight: 700; flex-shrink: 0; }

.item-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 14px; width: 100%; max-width: 360px;
}
.item-tile {
  aspect-ratio: 1;
  background: var(--bg-panel);
  border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: 42px;
  border: 2px solid rgba(255,255,255,.06);
}
.item-tile.wrong { animation: shake .3s; border-color: var(--danger); }
.item-tile.correct { animation: pop .25s; opacity: 0; }
@keyframes shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
@keyframes pop { to { transform: scale(1.3); opacity: 0; } }

.progress-bar {
  width: 100%; height: 8px; background: var(--charcoal);
  border-radius: 999px; overflow: hidden; margin-top: 24px;
}
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--ember-orange), var(--flame-yellow)); width: 100%; transition: width .1s linear; }

/* Stage 2: ignition */
.ignite-track {
  position: relative;
  width: 100%; max-width: 400px; height: 168px;
  margin: 40px 0 48px;
  background: var(--charcoal);
  border-radius: 999px;
  overflow: hidden;
}
.ignite-zone {
  position: absolute; top: 0; bottom: 0;
  background: rgba(76,175,106,.35);
  border-left: 2px solid var(--grill-green);
  border-right: 2px solid var(--grill-green);
}
.ignite-marker {
  position: absolute; top: 50%; left: 0;
  transform: translate(-50%, -50%);
  font-size: 72px;
  will-change: left;
}
.hit-feedback { font-size: 24px; font-weight: 800; height: 32px; margin-top: 12px; }
.hit-feedback.perfect { color: var(--grill-green); }
.hit-feedback.good { color: var(--flame-yellow); }
.hit-feedback.miss { color: var(--danger); }

/* Stage 3: grill */
.grill {
  position: relative;
  width: 100%; max-width: 400px; aspect-ratio: 1;
  background: repeating-linear-gradient(0deg, #1b1310, #1b1310 8px, #241a16 8px, #241a16 16px);
  border-radius: 24px;
  border: 3px solid #3a2a20;
  margin: 8px 0 16px;
}
.meat {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 76px; height: 76px;
  display: flex; align-items: center; justify-content: center;
  font-size: 44px;
  border-radius: 50%;
  cursor: pointer;
  transition: filter .15s ease;
}
.meat .doneness-ring {
  position: absolute; inset: -4px;
  border-radius: 50%;
  border: 4px solid var(--charcoal);
}
.meat-icon { position: relative; z-index: 1; }
.meat.state-cooking .doneness-ring { border-color: #6b5a4a; }
.meat.state-perfect .doneness-ring {
  border-color: var(--ember-orange);
  box-shadow: 0 0 16px rgba(255,122,41,.7);
  animation: pulse-perfect .5s infinite alternate;
}
.meat.state-overcooked .doneness-ring {
  border-color: var(--danger);
  box-shadow: 0 0 14px rgba(255,77,77,.6);
}
.meat.state-burnt { filter: grayscale(1) brightness(.45); }
.meat.state-burnt .doneness-ring { border-color: var(--danger); }
@keyframes pulse-perfect { from { transform: scale(1); } to { transform: scale(1.08); } }
.score-live { color: var(--text-muted); font-size: 16px; }

/* Result */
.result-summary-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 320px;
}
.result-grade-col {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-panel);
  border-radius: 14px;
  padding: 10px 8px;
  margin-bottom: 8px;
}
.grade-badge { font-size: 44px; margin: 0 0 2px; }
.grade-name { font-size: 18px; font-weight: 800; text-align: center; }
.score-total { color: var(--text-muted); font-size: 13px; margin-top: 2px; }
.score-total b { color: var(--flame-yellow); font-size: 17px; }
.stage-breakdown {
  width: 100%;
  background: var(--bg-panel);
  border-radius: 14px;
  padding: 8px 18px;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--text-muted);
}
.stage-breakdown div { display: flex; justify-content: space-between; width: 140px; margin: 0 auto; padding: 3px 0; }
.coupon-box {
  width: 100%; max-width: 320px;
  background: linear-gradient(135deg, rgba(255,122,41,.15), rgba(255,61,26,.1));
  border: 1.5px dashed var(--ember-orange);
  border-radius: 16px;
  padding: 10px;
  text-align: center;
  margin-bottom: 8px;
}
.coupon-label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.coupon-code { font-size: 22px; font-weight: 800; letter-spacing: 4px; color: var(--flame-yellow); }
.coupon-note { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.drama-teaser {
  font-size: 12px;
  color: var(--gold);
  text-align: center;
  margin: 0 0 8px;
  max-width: 300px;
}

/* Leaderboard */
.leaderboard-list {
  list-style: none; padding: 0; width: 100%; max-width: 400px;
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}
.leaderboard-list li {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--bg-panel);
  padding: 18px 20px;
  border-radius: 14px;
  margin-bottom: 12px;
  font-size: 17px;
}
.leaderboard-list li .rank { color: var(--flame-yellow); font-weight: 800; width: 28px; font-size: 20px; }
.leaderboard-list .empty { text-align: center; color: var(--text-muted); padding: 20px 0; }

/* Modal */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal.hidden { display: none; }
.modal-box {
  background: var(--bg-panel);
  border-radius: 18px;
  padding: 24px;
  width: 85%; max-width: 320px;
  text-align: center;
}
.modal-box h3 { margin-top: 0; }
#nickname-input {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1.5px solid rgba(255,255,255,.15);
  background: var(--charcoal);
  color: var(--text-main);
  font-size: 16px;
  margin-bottom: 14px;
  text-align: center;
}
.share-preview-img {
  width: 100%;
  border-radius: 12px;
  margin: 10px 0;
  -webkit-touch-callout: default;
}
.share-preview-hint {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0 0 16px;
}