/* ===== l-shell: モバイル幅コンテナ ===== */
.l-shell {
  max-width: 420px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--bg);
  position: relative;
  z-index: 1;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05), 0 20px 80px rgba(0, 0, 0, 0.25);
  overflow-x: clip;
}

/* ===== l-header ===== */
.l-header {
  position: relative;
  padding: 14px 20px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}

/* ===== l-footer ===== */
.l-footer {
  padding: 40px 20px 30px;
  background: var(--ink);
  color: var(--bg);
  text-align: center;
}

/* ===== PC装飾背景 ===== */
.l-pc-bg {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 10% 15%, rgba(232, 162, 60, 0.22) 0%, transparent 40%),
    radial-gradient(ellipse at 90% 85%, rgba(217, 116, 65, 0.22) 0%, transparent 45%),
    linear-gradient(135deg, #f5e4cd 0%, #fbf3e8 40%, #f5e4cd 100%);

  & .l-pc-bg__side {
    position: absolute;
    top: 0;
    bottom: 0;
    overflow: hidden;
  }

  & .l-pc-bg__side--left  { left: 0; right: calc(50% + 210px); }
  & .l-pc-bg__side--right { right: 0; left: calc(50% + 210px); }

  & .l-pc-bg__wordmark {
    position: absolute;
    font-family: var(--font-en);
    font-weight: 700;
    color: rgba(217, 116, 65, 0.28);
    white-space: nowrap;
    user-select: none;
    line-height: 1;
  }

  & .l-pc-bg__badge {
    position: absolute;
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 10px;
    letter-spacing: 3px;
    color: #a0816a;
    writing-mode: vertical-rl;
  }

  & .l-pc-bg__dots {
    position: absolute;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
    opacity: 0.5;

    & span {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
    }
  }

  & .l-pc-bg__mark {
    position: absolute;
    opacity: 0.9;
  }
}

/* PC背景 — 左サイドの各要素 */
.l-pc-bg__wordmark--dance  { top: 12%; left: 8%;  font-size: 88px; transform: rotate(-6deg); }
.l-pc-bg__wordmark--smile  { top: 58%; left: 14%; font-size: 72px; transform: rotate(-3deg); color: rgba(232, 162, 60, 0.32); }
.l-pc-bg__wordmark--enjoy  { top: 18%; right: 6%; font-size: 96px; transform: rotate(4deg); }
.l-pc-bg__wordmark--ballet { top: 52%; right: 18%; font-size: 64px; transform: rotate(-2deg); color: rgba(232, 162, 60, 0.3); }

.l-pc-bg__badge--left  { top: 40px; left: 40px; }
.l-pc-bg__badge--right { top: 40px; right: 40px; }

.l-pc-bg__mark--left-star  { top: 38%; right: 12%; }
.l-pc-bg__mark--left-dot   { top: 78%; left: 30%; }
.l-pc-bg__mark--right-star { top: 12%; left: 18%; }

.l-pc-bg__dots--left  { bottom: 30%; left: 10%; }
.l-pc-bg__dots--right { top: 28%; right: 14%; }

/* フッター内テキスト */
.l-footer__address {
  margin-top: 14px;
  font-size: 12px;
  opacity: 0.7;
  line-height: 1.8;
}

.l-footer__copyright {
  margin-top: 20px;
  font-size: 11px;
  opacity: 0.5;
}

@media (min-width: 421px) {
  body { background: transparent; }
  .l-pc-bg { display: block; }
}