:root {
  --fvb-offset-y: 0px;
  --fvb-mobile-offset-y: 0px;
  --fvb-dim-opacity: 1;
  --fvb-dim-transition: opacity 0.22s ease, transform 0.22s ease;

  /* 吹き出し本体と▽で共通利用する見た目 */
  --fvb-surface-bg: rgba(255, 255, 255, 0.97);
  --fvb-surface-border: rgba(226, 232, 240, 0.95);
  --fvb-tail-left: 36px;
  --fvb-tail-size: 22px;
}

/* =========================================================
   オプション1：
   「画面中央ではなく少し上寄せにしたい」場合は、
   下のコメントアウトを外してください
========================================================= */
/*
:root {
  --fvb-offset-y: -56px;
}
*/

/* =========================================================
   オプション2：
   「スマホでは下寄せにしたい」場合は、
   下のコメントアウトを外してください
========================================================= */
/*
@media (max-width: 480px) {
  :root {
    --fvb-mobile-offset-y: 120px;
  }
}
*/

.first-visit-bubble-overlay {
  position: fixed;
  inset: 0;
  z-index: 9500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: transparent;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.first-visit-bubble-overlay.is-open {
  opacity: 1;
  pointer-events: none;
}

.first-visit-bubble-card {
  position: relative;
  isolation: isolate;
  overflow: visible;
  width: min(92vw, 420px);
  padding: 28px 22px 38px;
  border-radius: 22px;
  background: var(--fvb-surface-bg);
  border: 1px solid var(--fvb-surface-border);
  box-shadow:
    0 18px 50px rgba(15, 23, 42, 0.16),
    0 6px 18px rgba(15, 23, 42, 0.08);
  transform: translateY(calc(10px + var(--fvb-offset-y)));
  transition: var(--fvb-dim-transition);
  pointer-events: auto;
  opacity: var(--fvb-dim-opacity);
}

.first-visit-bubble-overlay.is-open .first-visit-bubble-card {
  transform: translateY(var(--fvb-offset-y)) scale(1);
}

.first-visit-bubble-card::after {
  content: "";
  position: absolute;
  left: var(--fvb-tail-left);
  bottom: -10px;
  width: var(--fvb-tail-size);
  height: var(--fvb-tail-size);
  background: var(--fvb-surface-bg);
  transform: rotate(45deg);
  border-right: 1px solid var(--fvb-surface-border);
  border-bottom: 1px solid var(--fvb-surface-border);
  pointer-events: none;
  z-index: -1;
}

.first-visit-bubble-close {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 1;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  color: #334155;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  pointer-events: auto;
}

.first-visit-bubble-close:hover {
  background: rgba(15, 23, 42, 0.12);
  transform: scale(1.04);
}

.first-visit-bubble-close:focus-visible {
  outline: 2px solid rgba(59, 130, 246, 0.55);
  outline-offset: 2px;
}

.first-visit-bubble-text {
  position: relative;
  z-index: 1;
  margin: 0;
  padding-top: 10px;
  text-align: center;
  font-size: 18px;
  line-height: 1.8;
  color: #1e293b;
  letter-spacing: 0.02em;
  word-break: break-word;
}

/* 自動で薄くした後の見た目 */
.first-visit-bubble-card.is-dimmed {
  opacity: 0.48;
}

.first-visit-bubble-card.is-dimmed:hover,
.first-visit-bubble-card.is-dimmed:focus-within {
  opacity: 1;
}

@media (max-width: 480px) {
  .first-visit-bubble-card {
    width: min(94vw, 360px);
    padding: 24px 18px 28px;
    border-radius: 18px;
    transform: translateY(calc(10px + var(--fvb-offset-y) + var(--fvb-mobile-offset-y)));
  }

  .first-visit-bubble-overlay.is-open .first-visit-bubble-card {
    transform: translateY(calc(var(--fvb-offset-y) + var(--fvb-mobile-offset-y))) scale(1);
  }

  .first-visit-bubble-card::after {
    left: 30px;
  }

  .first-visit-bubble-text {
    line-height: 1.7;
  }
}