:root {
  --ink: #241c18;
  --muted: #7d726a;
  --accent: #c45c48;
  --line: rgba(36, 28, 24, 0.08);
  --card: rgba(255, 252, 248, 0.78);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: "Outfit", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(880px 520px at 22% 62%, rgba(240, 190, 176, 0.55), transparent 68%),
    radial-gradient(640px 420px at 86% 8%, rgba(206, 222, 208, 0.5), transparent 70%),
    #f3eee8;
}

body.is-dragging { cursor: grabbing; }
body.is-dragging .card { cursor: grabbing; }

.top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 40px 0;
}

.brand {
  margin: 0;
  font-family: "Fraunces", "Palatino Linotype", Palatino, serif;
  font-size: 15px;
  letter-spacing: 0.28em;
  font-weight: 620;
}

.brand span { color: var(--accent); padding: 0 0.2em; }

.tag {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.12em;
}

main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 40px 12px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 400px);
  gap: 56px;
  align-items: center;
  min-height: calc(100vh - 148px);
}

.hint {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 14px;
  letter-spacing: 0.04em;
}

h1 {
  margin: 0;
  font-family: "Fraunces", "Palatino Linotype", Palatino, serif;
  font-weight: 520;
  font-size: clamp(64px, 7.4vw, 104px);
  letter-spacing: -0.045em;
  line-height: 0.88;
}

.sub {
  margin: 16px 0 8px;
  font-size: 18px;
  color: #5c534c;
}

.stage {
  margin-top: 6px;
  padding: 28px 36px 8px;
  perspective: 1100px;
  overflow: visible;
}

.tilt {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.55s var(--ease);
  will-change: transform;
}

.tilt.swinging { transition: none; }

.hero {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: min(52vh, 520px);
  margin: 0 auto;
  cursor: grab;
  touch-action: none;
  overflow: visible;
}

.hero:active { cursor: grabbing; }
.hero { user-select: none; }

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 0.5s ease, filter 0.35s ease;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
  filter: drop-shadow(0 22px 18px rgba(80, 36, 28, 0.16));
}

.hero img.on { opacity: 1; }

.hero.flash img.on { filter: drop-shadow(0 22px 18px rgba(80, 36, 28, 0.16)) brightness(1.12); }

.sheen {
  position: absolute;
  inset: 8% 10%;
  border-radius: 46%;
  pointer-events: none;
  background: radial-gradient(circle at var(--sx, 50%) var(--sy, 40%), rgba(255, 255, 255, 0.45), transparent 42%);
  mix-blend-mode: soft-light;
  opacity: 0.7;
}

.planes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
}

.planes button {
  border: 1px solid var(--line);
  background: rgba(255, 252, 248, 0.82);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 14px;
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.12em;
  cursor: pointer;
}

.planes button.on {
  background: var(--accent);
  border-color: transparent;
  color: #fffdfb;
}

.plane-note {
  margin: 8px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.floor {
  width: 42%;
  height: 26px;
  margin: -8px auto 0;
  background: radial-gradient(ellipse at center, rgba(90, 42, 32, 0.22), transparent 72%);
}

.drop-hint {
  position: absolute;
  left: 50%;
  bottom: 11%;
  transform: translateX(-50%);
  margin: 0;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 250, 246, 0.92);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.04em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.tilt.hot .drop-hint { opacity: 1; }

.tilt.hot::before {
  content: "";
  position: absolute;
  inset: 14% 16% 16%;
  border-radius: 46%;
  border: 1.5px dashed rgba(196, 92, 72, 0.55);
  background: rgba(255, 255, 255, 0.28);
  pointer-events: none;
}

.sparkles { position: absolute; inset: 0; pointer-events: none; overflow: visible; }

.spark {
  position: absolute;
  left: 50%;
  top: 46%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fffaf0;
  box-shadow: 0 0 10px #fff1c4;
  animation: burst 0.72s ease-out forwards;
}

.spark.star {
  width: 12px;
  height: 12px;
  border-radius: 0;
  background: #ffe29a;
  clip-path: polygon(50% 0, 61% 38%, 100% 50%, 61% 62%, 50% 100%, 39% 62%, 0 50%, 39% 38%);
}

@keyframes burst {
  0% { transform: translate(-50%, -50%) scale(0.3); opacity: 1; }
  100% { transform: translate(calc(-50% + var(--x)), calc(-50% + var(--y))) scale(1); opacity: 0; }
}

.status-row {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 36px;
  margin-top: 4px;
}

#status {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: #5e554e;
}

#reset {
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 14px;
  letter-spacing: 0.06em;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.rail h2 {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 560;
  letter-spacing: 0.16em;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 8px;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: 10px 14px 10px 8px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--card);
  color: inherit;
  font: inherit;
  cursor: grab;
  touch-action: none;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s var(--ease);
}

.card img {
  width: 96px;
  height: 72px;
  object-fit: contain;
  pointer-events: none;
}

.meta { display: flex; flex-direction: column; gap: 3px; min-width: 0; }

.meta strong { font-size: 16px; font-weight: 560; }

.meta em {
  font-style: normal;
  color: var(--muted);
  font-size: 13px;
}

.meta small {
  display: none;
  margin-top: 2px;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.card.selected {
  background: #fffdfb;
  border-color: rgba(196, 92, 72, 0.7);
  box-shadow: 0 14px 34px rgba(166, 78, 58, 0.12);
}

.card.selected small { display: inline; }

.card:hover { transform: translateY(-2px); }

.ghost {
  position: fixed;
  width: 230px;
  height: 150px;
  object-fit: contain;
  pointer-events: none;
  z-index: 30;
  filter: drop-shadow(0 18px 22px rgba(70, 32, 22, 0.28));
  transform: translate(-50%, -62%);
}

footer {
  max-width: 1240px;
  margin: 0 auto;
  padding: 8px 40px 28px;
}

footer p {
  margin: 0;
  max-width: 640px;
  color: #8a8078;
  font-size: 12px;
  line-height: 1.6;
}

@media (max-width: 900px) {
  .planes { gap: 6px; }
  .planes button { padding: 6px 10px; letter-spacing: 0.06em; }
}

@media (max-width: 900px) {
  .top, main, footer { padding-left: 20px; padding-right: 20px; }
  main {
    grid-template-columns: 1fr;
    gap: 8px;
    min-height: 0;
  }
  .top { padding-top: 20px; }
  .brand { letter-spacing: 0.16em; font-size: 13px; }
  h1 { font-size: 58px; }
  .card { grid-template-columns: 84px 1fr; }
  .card img { width: 84px; height: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  .tilt, .hero img, .card { transition: none; }
  .spark { animation: none; opacity: 0; }
}