/* 祭壇とお花のしつらえシミュレーター（わそう） */
.altar {
  --altar-ink: #1e1b22;
  --altar-gold: #a88b5c;
  --altar-rule: #e5e0d6;
  --altar-mute: #6d6772;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  color: var(--altar-ink);
  font-family: var(--gothic, 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif);
  font-size: 15px;
  line-height: 1.8;
  box-sizing: border-box;
  max-width: 100%;
}
.altar *, .altar *::before, .altar *::after { box-sizing: border-box; }

.altar-fig {
  position: sticky;
  top: 120px;
  margin: 0;
  border: 1px solid var(--altar-rule);
  background: #fff;
  min-width: 0;
}
.altar-svg {
  display: block;
  width: 100%;
  height: auto;
  isolation: isolate;
}

.altar-panel {
  min-width: 0;
  background: #fff;
  border: 1px solid var(--altar-rule);
  padding: 32px 30px 30px;
}
.altar-lead {
  margin: 0 0 26px;
  font-family: var(--mincho, 'Shippori Mincho B1', 'Hiragino Mincho ProN', serif);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--altar-mute);
}
.altar-grp { margin: 0 0 26px; }
.altar-gh {
  margin: 0 0 10px;
  padding: 0 0 8px;
  border-bottom: 1px solid var(--altar-rule);
  font-family: var(--mincho, 'Shippori Mincho B1', 'Hiragino Mincho ProN', serif);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: .12em;
  color: var(--altar-ink);
}
.altar-opts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.altar-opts--color { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.altar-opt {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 2px;
  min-height: 52px;
  margin: 0;
  padding: 8px 12px 9px;
  background: #fff;
  color: var(--altar-ink);
  border: 1px solid var(--altar-rule);
  border-radius: 0;
  box-shadow: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color .5s ease, border-color .5s ease;
}
.altar-opt::after {
  content: '';
  position: absolute;
  left: -1px;
  right: -1px;
  bottom: -1px;
  height: 1px;
  background: var(--altar-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .7s cubic-bezier(.3, .6, .2, 1);
}
.altar-opt:hover { background: #fbf9f4; border-color: #d6c9ab; }
.altar-opt:hover::after { transform: scaleX(.3); }
.altar-opt[aria-pressed="true"] { background: #faf7f0; border-color: #d6c9ab; }
.altar-opt[aria-pressed="true"]::after { transform: scaleX(1); }
.altar-opt:focus { outline: none; }
.altar-opt:focus-visible { outline: 1px solid var(--altar-gold); outline-offset: 2px; }

.altar-ol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 1.45;
  letter-spacing: .04em;
}
.altar-os {
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: .02em;
  color: var(--altar-mute);
}
.altar-sw { display: inline-flex; flex: none; }
.altar-sw i {
  display: block;
  width: 10px;
  height: 16px;
  border: 1px solid rgba(30, 27, 34, .14);
  margin-right: -1px;
}

.altar-result {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--altar-rule);
}
.altar-sum {
  margin: 0 0 14px;
  font-family: var(--mincho, 'Shippori Mincho B1', 'Hiragino Mincho ProN', serif);
  font-size: 17px;
  line-height: 1.95;
  letter-spacing: .05em;
}
.altar-note {
  margin: 0 0 22px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--altar-mute);
}
.altar-cta {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 52px;
  padding: 12px 24px;
  background: var(--altar-ink);
  color: #fff;
  border: 1px solid var(--altar-ink);
  border-radius: 0;
  font-size: 14px;
  letter-spacing: .14em;
  text-decoration: none;
  transition: background-color .5s ease, border-color .5s ease;
}
.altar-cta::after {
  content: '';
  width: 22px;
  height: 1px;
  background: currentColor;
  transition: width .6s cubic-bezier(.3, .6, .2, 1);
}
.altar-cta:hover { background: var(--altar-gold); border-color: var(--altar-gold); color: #fff; }
.altar-cta:hover::after { width: 34px; }
.altar-cta:focus-visible { outline: 1px solid var(--altar-gold); outline-offset: 3px; }

/* ---- 絵の中の動き（初回描画後にだけ有効） ---- */
.altar-fl { transform-box: fill-box; transform-origin: center; }
.altar-fl.is-off { opacity: 0; transform: scale(.35); }
.altar-ready .altar-fl { transition: opacity 1s ease, transform 1s ease; }
.altar-ready .altar-fc,
.altar-ready .altar-lf { transition: fill 1.4s ease; }
.altar-ready .altar-tr { transition: fill .9s ease, stroke .9s ease, opacity .9s ease; }
.altar-ready .altar-ov { transition: opacity 1.4s ease, fill 1.4s ease; }
.altar-tint, .altar-vig { mix-blend-mode: multiply; }
.altar-pool { mix-blend-mode: normal; }

@media (max-width: 760px) {
  .altar { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .altar-fig { position: static; }
  .altar-panel { padding: 24px 16px 22px; }
  .altar-opt { min-height: 56px; padding: 8px 10px 9px; }
  .altar-ol { font-size: 14px; }
  .altar-sum { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .altar *, .altar *::before, .altar *::after {
    transition: none !important;
    animation: none !important;
  }
}