/* ====================================================================
   結婚祝い会 ご案内ページ スタイルシート
   フォント: BIZ UDPMincho(見出し)/ BIZ UDPGothic(本文)
==================================================================== */

:root {
  --paper: #faf8f3;
  --paper-deep: #f3efe6;
  --ink: #3a3a35;
  --ink-soft: #6e6c63;
  --gold: #a8895a;
  --gold-soft: #d8c9ac;
  --gold-pale: #ece4d3;
  --green: #7a8471;
  --serif: "BIZ UDPMincho", "Hiragino Mincho ProN", serif;
  --sans: "BIZ UDPGothic", "Hiragino Kaku Gothic ProN", sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  /* SVGによる和紙のような微細なドットテクスチャ */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28'%3E%3Ccircle cx='6' cy='6' r='0.7' fill='%23a8895a' fill-opacity='0.07'/%3E%3Ccircle cx='20' cy='18' r='0.7' fill='%23a8895a' fill-opacity='0.05'/%3E%3C/svg%3E");
  line-height: 2;
  font-size: 15px;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
}

/* ------------------------------------------------------------------
   背景の装飾(固定リング)
------------------------------------------------------------------ */
.bg-ornament {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.bg-ring {
  position: absolute;
  color: var(--gold);
  opacity: 0.1;
}

.bg-ring--tl {
  width: min(60vw, 480px);
  top: -12%;
  left: -14%;
}

.bg-ring--br {
  width: min(70vw, 560px);
  bottom: -18%;
  right: -16%;
}

/* ------------------------------------------------------------------
   ナビゲーション
------------------------------------------------------------------ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(250, 248, 243, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gold-pale);
}

.site-nav nav {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: clamp(0.6rem, 2.4vw, 1.8rem);
  padding: 0.85rem 1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.site-nav a {
  font-size: 0.78rem;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.1em;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}

.site-nav a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold-soft);
}

/* ------------------------------------------------------------------
   ヒーロー
------------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: calc(100svh - 52px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.5rem;
  overflow: hidden;
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.hero-rings {
  width: 96px;
  color: var(--gold);
  margin-bottom: 1.6rem;
}

.hero-eyebrow {
  font-family: var(--serif);
  font-size: 0.78rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.1rem;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.7rem, 5.6vw, 2.6rem);
  letter-spacing: 0.2em;
  text-indent: 0.2em; /* 中央揃えの字間バランス調整 */
  margin-bottom: 1.4rem;
}

.hero-names {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 3.4vw, 1.4rem);
  letter-spacing: 0.18em;
  color: var(--ink);
  margin-bottom: 1.2rem;
}

.hero-lead {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 2.8rem;
}

.hero-date {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  padding: 1.5rem 3rem;
  border-top: 1px solid var(--gold-soft);
  border-bottom: 1px solid var(--gold-soft);
  margin-bottom: 1.8rem;
}

.hero-date-year {
  font-family: var(--serif);
  font-size: 0.85rem;
  letter-spacing: 0.5em;
  text-indent: 0.5em;
  color: var(--gold);
}

.hero-date-main {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 8vw, 3.4rem);
  letter-spacing: 0.08em;
  line-height: 1.3;
}

.hero-date-main small {
  font-size: 0.36em;
  letter-spacing: 0.24em;
  color: var(--gold);
  vertical-align: 0.5em;
}

.hero-date-time {
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: 0.22em;
  color: var(--ink-soft);
}

.hero-venue {
  font-family: var(--serif);
  font-size: 1.06rem;
  letter-spacing: 0.16em;
}

.hero-venue span {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--ink-soft);
  margin-top: 0.3rem;
}

.hero-botanical {
  position: absolute;
  bottom: 0;
  width: clamp(90px, 16vw, 160px);
  color: var(--green);
  opacity: 0.42;
  z-index: 1;
}

.hero-botanical--left {
  left: clamp(-20px, 1vw, 40px);
}

.hero-botanical--right {
  right: clamp(-20px, 1vw, 40px);
}

/* ------------------------------------------------------------------
   セクション共通
------------------------------------------------------------------ */
main {
  position: relative;
  z-index: 1;
}

.section {
  max-width: 680px;
  margin: 0 auto;
  padding: 4.5rem 1.5rem;
}

.section-head {
  text-align: center;
  margin-bottom: 2.8rem;
}

.section-eyebrow {
  font-family: var(--serif);
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.section-head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.3rem, 3.6vw, 1.65rem);
  letter-spacing: 0.24em;
  text-indent: 0.24em;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 36px;
  height: 1px;
  background: var(--gold-soft);
  margin: 1.1rem auto 0;
}

.section-note {
  margin-top: 1.6rem;
  font-size: 0.84rem;
  color: var(--ink-soft);
  text-align: center;
}

.sub-head {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.02rem;
  letter-spacing: 0.18em;
  color: var(--ink);
  margin: 2.4rem 0 1rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--gold-soft);
}

.sub-head:first-child {
  margin-top: 0;
}

/* 区切りの飾り */
.divider {
  text-align: center;
  color: var(--gold-soft);
}

.divider svg {
  width: 180px;
}

/* ------------------------------------------------------------------
   ご挨拶
------------------------------------------------------------------ */
.prose {
  text-align: center;
  font-size: 0.94rem;
}

.prose p + p {
  margin-top: 1.6rem;
}

.prose-sign {
  font-family: var(--serif);
  letter-spacing: 0.2em;
  color: var(--ink-soft);
  text-align: right;
}

/* ------------------------------------------------------------------
   開催情報
------------------------------------------------------------------ */
.info-list {
  background: #fff;
  border: 1px solid var(--gold-pale);
  border-radius: 4px;
  overflow: hidden;
}

.info-row {
  display: flex;
  padding: 1.5rem 1.6rem;
}

.info-row + .info-row {
  border-top: 1px dashed var(--gold-pale);
}

.info-row dt {
  flex: 0 0 5.5em;
  font-family: var(--serif);
  letter-spacing: 0.22em;
  color: var(--gold);
  padding-top: 0.05em;
}

.info-row dd {
  flex: 1;
  font-size: 0.96rem;
}

.info-note {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 0.4rem;
  line-height: 1.8;
}

.map-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  margin-top: 0.8rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-decoration: none;
  border: 1px solid var(--gold-soft);
  border-radius: 999px;
  padding: 0.35em 1.2em;
  transition: background-color 0.25s, color 0.25s;
}

.map-link:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: #fff;
}

/* ------------------------------------------------------------------
   会費
------------------------------------------------------------------ */
.fee-card {
  background: #fff;
  border: 1px solid var(--gold-pale);
  border-radius: 4px;
  text-align: center;
  padding: 2.6rem 1.5rem;
  position: relative;
}

.fee-card::before,
.fee-card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
}

.fee-card::before {
  top: 8px;
  left: 8px;
  border-top: 1px solid var(--gold-soft);
  border-left: 1px solid var(--gold-soft);
}

.fee-card::after {
  bottom: 8px;
  right: 8px;
  border-bottom: 1px solid var(--gold-soft);
  border-right: 1px solid var(--gold-soft);
}

.fee-amount {
  font-family: var(--serif);
  font-size: 2.2rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

.fee-amount span {
  font-size: 0.5em;
  margin-left: 0.2em;
}

.fee-amount--tbd {
  font-size: 1.5rem;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  color: var(--ink-soft);
}

.fee-caption {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 0.6rem;
}

.fee-method {
  font-size: 0.88rem;
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px dashed var(--gold-pale);
}

/* ------------------------------------------------------------------
   当日の流れ(タイムライン)
------------------------------------------------------------------ */
.timeline {
  list-style: none;
  position: relative;
  padding-left: 0.4rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: calc(0.4rem + 3.4em + 1.05rem);
  top: 0.8em;
  bottom: 0.8em;
  width: 1px;
  background: var(--gold-soft);
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 2.2rem;
  position: relative;
  padding: 1.1rem 0;
}

.timeline-time {
  flex: 0 0 3.4em;
  font-family: var(--serif);
  font-size: 0.98rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-align: right;
  line-height: 1.9;
  position: relative;
}

/* タイムラインの点 */
.timeline-time::after {
  content: "";
  position: absolute;
  right: -1.28rem;
  top: 0.78em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--gold);
  transform: translateX(50%);
}

.timeline-content h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.04rem;
  letter-spacing: 0.14em;
  line-height: 1.9;
}

.timeline-content p {
  font-size: 0.84rem;
  color: var(--ink-soft);
  margin-top: 0.2rem;
}

.timeline-item--tbd .timeline-time {
  color: var(--gold-soft);
}

.timeline-item--tbd .timeline-time::after {
  border-color: var(--gold-soft);
}

.timeline-item--tbd .timeline-content h3 {
  color: var(--ink-soft);
}

/* ------------------------------------------------------------------
   お配りするもの
------------------------------------------------------------------ */
.item-list {
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.item {
  background: #fff;
  border: 1px solid var(--gold-pale);
  border-radius: 4px;
  padding: 1.3rem 1.6rem;
}

.item h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: 0.16em;
}

.item p {
  font-size: 0.84rem;
  color: var(--ink-soft);
  margin-top: 0.3rem;
}

.item--tbd {
  background: transparent;
  border-style: dashed;
  text-align: center;
}

.item--tbd h3 {
  color: var(--ink-soft);
}

/* ------------------------------------------------------------------
   持ち物・注意事項
------------------------------------------------------------------ */
.note-list {
  list-style: none;
}

.note-list li {
  position: relative;
  padding: 0.5rem 0 0.5rem 1.5rem;
  font-size: 0.92rem;
}

.note-list li::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 1.18em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-soft);
}

.note-list li + li {
  border-top: 1px dashed var(--gold-pale);
}

.note--tbd {
  color: var(--ink-soft);
}

.note--tbd::before {
  background: transparent !important;
  border: 1px solid var(--gold-soft);
}

/* ------------------------------------------------------------------
   フッター
------------------------------------------------------------------ */
.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 4.5rem 1.5rem 3rem;
  margin-top: 2rem;
  background: var(--paper-deep);
  border-top: 1px solid var(--gold-pale);
}

.footer-rings {
  width: 72px;
  color: var(--gold);
  opacity: 0.7;
  margin-bottom: 1.2rem;
}

.footer-message {
  font-family: var(--serif);
  font-size: 0.96rem;
  letter-spacing: 0.2em;
  margin-bottom: 1.6rem;
}

.footer-contact {
  font-size: 0.84rem;
  color: var(--ink-soft);
  margin-bottom: 1.6rem;
}

.footer-meta {
  font-family: var(--serif);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

/* ------------------------------------------------------------------
   スクロール時のフェードイン
------------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ------------------------------------------------------------------
   スマートフォン向けの調整
------------------------------------------------------------------ */
@media (max-width: 560px) {
  body {
    font-size: 14px;
  }

  .site-nav nav {
    justify-content: flex-start;
    padding: 0.8rem 1.2rem;
  }

  .hero {
    min-height: calc(100svh - 48px);
    padding: 3rem 1.2rem;
  }

  .hero-date {
    padding: 1.2rem 2rem;
  }

  .hero-botanical {
    opacity: 0.25;
  }

  .section {
    padding: 3.4rem 1.2rem;
  }

  .info-row {
    flex-direction: column;
    gap: 0.3rem;
    padding: 1.2rem 1.3rem;
  }

  .info-row dt {
    flex: none;
    font-size: 0.82rem;
  }

  .timeline-item {
    gap: 1.7rem;
  }

  .timeline::before {
    left: calc(0.4rem + 3.4em + 0.8rem);
  }

  .timeline-time::after {
    right: -1.03rem;
  }
}