/* ==========================================================================
   結婚式Web招待状 スタイルシート
   ========================================================================== */

:root {
  --primary-color: #c5a059;       /* エレガントゴールド */
  --primary-hover: #b08c46;
  --secondary-color: #e8d3c5;     /* ローズシャンパン */
  --accent-color: #8a6d3b;
  --bg-color: #faf8f5;             /* アイボリーホワイト */
  --card-bg: #ffffff;
  --text-primary: #333333;
  --text-muted: #666666;
  --text-light: #888888;
  --border-color: #e2d8cd;
  --focus-ring: rgba(197, 160, 89, 0.3);
  --danger-color: #d9534f;
  --success-color: #5cb85c;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);

  /* --------------------------------------------------------------------------
     統一タイポグラフィ スケール (5段階に厳格化)
     -------------------------------------------------------------------------- */
  --fz-title: 1.6rem;    /* 大タイトル */
  --fz-h2: 1.2rem;       /* セクション見出し・お名前・大キャッチ */
  --fz-body: 0.95rem;    /* 標準本文・フォーム入力・確認値 */
  --fz-sub: 0.85rem;     /* 式情報ラベル・各種バッジ・サブタイトル */
  --fz-small: 0.78rem;   /* 注記・マイクロテキスト */

  /* ★ 全要素のフォントを Shippori Mincho (しっぽり明朝) に完全統一 */
  --font-serif: "Shippori Mincho", serif;
  --font-sans: "Shippori Mincho", serif;
}

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

img {
  max-width: 100%;
  height: auto;
}

body {
  font-family: var(--font-serif);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: var(--fz-body);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 60px;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --------------------------------------------------------------------------
   全画面オープニング アニメーション (封筒開封演出・シャドウ完全排除)
   -------------------------------------------------------------------------- */
.opening-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 2500;
  background: radial-gradient(circle at center, #ffffff 0%, #f4ede2 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
  overflow: hidden;
  transition: opacity 1.2s ease-in-out, transform 1.2s ease-in-out, visibility 1.2s;
}

.opening-overlay.closed {
  opacity: 0;
  transform: scale(1.04);
  visibility: hidden;
  pointer-events: none;
}

.envelope-container {
  position: relative;
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.envelope-wrapper {
  position: relative;
  width: 100%;
  height: 380px;
  perspective: 1000px;
  margin-bottom: 25px;
}

/* 封筒本体ポケット (前部分) */
.envelope-pocket {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 260px;
  background: linear-gradient(180deg, #fcfaf7 0%, #f2ebe1 100%);
  border: 1px solid #e0d4c8;
  border-radius: 0 0 12px 12px;
  box-shadow: none;
  z-index: 3;
  clip-path: polygon(0 0, 50% 38px, 100% 0, 100% 100%, 0 100%);
}

/* 封筒の背もたれ (後ろ部分) */
.envelope-wrapper::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 260px;
  background-color: #ebdcd0;
  border-radius: 0 0 12px 12px;
  z-index: 1;
}

/* 封筒のフタ (フラップ) */
.envelope-flap {
  position: absolute;
  top: 120px;
  left: 0;
  width: 100%;
  height: 140px;
  background: linear-gradient(180deg, #f7efe4 0%, #eae0d2 100%);
  border: 1px solid #e0d4c8;
  border-bottom: none;
  clip-path: polygon(0 0, 50% 100%, 100% 0);
  transform-origin: top center;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 4;
}

/* 封かんワックスシール */
.wax-seal {
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 54px;
  height: 54px;
  background: transparent;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  transition: opacity 0.4s ease, transform 0.2s ease;
}

.wax-seal:hover {
  transform: translateX(-50%) scale(1.05);
}

.wax-seal-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* 開封アニメーション発動時 (openクラス) */
.envelope-container.open .envelope-flap {
  transform: rotateX(180deg);
  z-index: 1;
}

.envelope-container.open .wax-seal {
  opacity: 0;
}

/* 封筒から出てくる招待状手紙カード (実際の招待状画面のミニレプリカ) */
.envelope-letter {
  position: absolute;
  bottom: 12px;
  left: 4%;
  width: 92%;
  height: 240px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 14px;
  box-shadow: none;
  z-index: 2;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.35s, opacity 0.6s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
  text-align: center;
  overflow: hidden;
}

/* 封筒が開いてカード全体（全項目）が完璧にポップアップ (ドロップシャドウなし) */
.envelope-container.open .envelope-letter {
  transform: translateY(-220px) scale(1.02);
  box-shadow: none;
}

.mini-card-header {
  width: 100%;
}

.mini-card-photo {
  width: 100%;
  max-width: 240px;
  height: 90px;
  border-radius: 6px;
  overflow: hidden;
  margin: 4px auto;
  border: 1px solid var(--border-color);
  box-shadow: none;
}

.mini-photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}

.mini-card-info {
  width: 100%;
}

.opening-sub {
  font-family: var(--font-serif);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--primary-color);
  margin-bottom: 2px;
}

.opening-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.opening-couple {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--accent-color);
  margin-bottom: 2px;
}

.opening-date {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.opening-venue {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  color: var(--primary-color);
}

/* 開封用ボタン (ボタン押下必須) */
.opening-action-wrapper {
  margin-top: 10px;
}

.btn-open-envelope {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  color: #ffffff;
  border: none;
  border-radius: 30px;
  padding: 15px 36px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.15em;
  cursor: pointer;
  box-shadow: none;
  animation: pulseButton 2s infinite ease-in-out;
  transition: transform 0.2s, opacity 0.3s;
}

.envelope-container.open .btn-open-envelope {
  opacity: 0;
  pointer-events: none;
}

@keyframes pulseButton {
  0%, 100% {
    transform: scale(1);
    box-shadow: none;
  }
  50% {
    transform: scale(1.04);
    box-shadow: none;
  }
}

/* --------------------------------------------------------------------------
   ヘッダー & ヒーローセクション
   -------------------------------------------------------------------------- */
.hero {
  text-align: center;
  padding: 50px 20px 30px;
  background: linear-gradient(180deg, #fff 0%, var(--bg-color) 100%);
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  letter-spacing: 0.25em;
  color: var(--primary-color);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: var(--fz-title);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}

/* --------------------------------------------------------------------------
   ヒーロー完了通知バナー (結婚式のご案内とお名前の間に挿入)
   -------------------------------------------------------------------------- */
.hero-success-notice {
  background: linear-gradient(135deg, #fffcf7 0%, #faf3eb 100%);
  border: 1.5px solid var(--primary-color);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  margin: 15px 0 25px 0;
  text-align: center;
  box-shadow: 0 6px 20px rgba(197, 160, 89, 0.2);
  animation: noticeFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes noticeFadeIn {
  0% {
    opacity: 0;
    transform: translateY(-12px) scale(0.97);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.success-badge {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  letter-spacing: 0.2em;
  color: var(--primary-color);
  background-color: #fff;
  border: 1px solid var(--primary-color);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.hero-success-title {
  font-family: var(--font-serif);
  font-size: var(--fz-h2);
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.hero-success-subtext {
  font-family: var(--font-serif);
  font-size: var(--fz-body);
  color: var(--text-muted);
}

.couple-names {
  font-family: var(--font-serif);
  font-size: var(--fz-h2);
  color: var(--accent-color);
  margin-bottom: 25px;
}

/* --------------------------------------------------------------------------
   ヒーローフォトギャラリー & アニメーションスライドショー (フレームなし)
   -------------------------------------------------------------------------- */
.hero-photo-frame {
  position: relative;
  width: 100%;
  max-width: 620px;
  margin: 0 auto 30px auto;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   回答完了時専用お礼画像 (ending.jpg)
   -------------------------------------------------------------------------- */
.hero-ending-frame {
  position: relative;
  width: 100%;
  max-width: 620px;
  margin: 0 auto 30px auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(197, 160, 89, 0.18);
  animation: noticeFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-ending-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 460px;
  object-fit: cover;
  object-position: center;
  display: block;
}

.hero-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 460px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: #f7f5f0;
}

@media (max-width: 480px) {
  .hero-slider {
    aspect-ratio: 4 / 3;
    max-height: 320px;
  }
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.4s ease-in-out, visibility 1.4s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
  transform: scale(1.08);
  transition: transform 6s ease-out;
}

.hero-slide.active img {
  transform: scale(1.0);
}

.slider-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding-bottom: 4px;
}

.slider-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #e2d8cd;
  cursor: pointer;
  transition: background-color 0.4s ease, transform 0.4s ease, box-shadow 0.4s ease;
}

.slider-dots .dot.active {
  background-color: var(--primary-color);
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(197, 160, 89, 0.5);
}

.invitation-text {
  font-family: var(--font-serif);
  font-size: clamp(0.78rem, 3.5vw, 0.95rem);
  color: var(--text-muted);
  line-height: 2;
  margin-bottom: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
  padding: 0 5px;
}

.invitation-line {
  display: inline-block;
  word-break: keep-all;
  overflow-wrap: break-word;
  text-align: center;
}

.btn-open-envelope.loading {
  opacity: 0.75;
  cursor: wait;
}

.info-box {
  background-color: #fcf9f2;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 20px 0;
  text-align: left;
}

.info-item {
  display: flex;
  margin-bottom: 12px;
  font-size: var(--fz-body);
}

.info-item:last-child {
  margin-bottom: 0;
}

.info-label {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  font-weight: 600;
  min-width: 90px;
  color: var(--primary-color);
}

.info-value {
  font-family: var(--font-serif);
  color: var(--text-primary);
  font-size: var(--fz-body);
  flex: 1;
}

.map-link, .phone-link {
  display: inline-block;
  margin-left: 10px;
  color: var(--primary-color);
  text-decoration: none;
  font-size: var(--fz-sub);
  border: 1px solid var(--primary-color);
  padding: 2px 10px;
  border-radius: 14px;
  background-color: #fff;
  transition: background-color 0.2s, color 0.2s;
  white-space: nowrap;
}

.map-link:hover, .phone-link:hover {
  background-color: var(--primary-color);
  color: #fff;
}

/* --------------------------------------------------------------------------
   カード & フォーム全体
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--card-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 30px 25px;
  margin-bottom: 25px;
  border: 1px solid rgba(226, 216, 205, 0.6);
}

.section-title {
  font-family: var(--font-serif);
  font-size: var(--fz-h2);
  font-weight: 600;
  color: var(--primary-color);
  border-bottom: 2px solid var(--secondary-color);
  padding-bottom: 8px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.required-badge {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  background-color: #f7ece1;
  color: #a86128;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: normal;
  letter-spacing: 0.05em;
}

.optional-badge {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  background-color: #f0f0f0;
  color: #777;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: normal;
}

/* --------------------------------------------------------------------------
   ローディング & エラー表示
   -------------------------------------------------------------------------- */
.loading-container {
  text-align: center;
  padding: 60px 20px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
}

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--secondary-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.9s infinite linear;
  margin: 0 auto 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error-card {
  background-color: #fff8f8;
  border: 1px solid #f5c6cb;
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  color: #721c24;
  margin-top: 20px;
}

.error-title {
  font-family: var(--font-serif);
  font-size: var(--fz-h2);
  font-weight: bold;
  margin-bottom: 10px;
}

/* --------------------------------------------------------------------------
   フォームエレメント
   -------------------------------------------------------------------------- */
.form-group {
  margin-bottom: 22px;
}

.calendar-buttons-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.calendar-btn {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  color: var(--primary-color);
  background-color: #fff;
  border: 1px solid var(--primary-color);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.calendar-btn:hover {
  background-color: var(--primary-color);
  color: #fff;
  box-shadow: 0 2px 6px rgba(197, 160, 89, 0.3);
}

.form-group:last-child {
  margin-bottom: 0;
}

label.form-label {
  display: block;
  font-family: var(--font-serif);
  font-size: var(--fz-body);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-subtext {
  font-family: var(--font-serif);
  font-size: var(--fz-small);
  color: var(--text-light);
  margin-top: 4px;
}

.input-row {
  display: flex;
  gap: 12px;
}

.input-row .form-group {
  flex: 1;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: #fff;
  color: var(--text-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

input[readonly] {
  background-color: #f9f9f9;
  color: #555;
}

textarea {
  resize: vertical;
  min-height: 100px;
}

/* 郵便番号入力グループ */
.postal-group {
  display: flex;
  gap: 10px;
}

.postal-group input {
  flex: 1;
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--accent-color);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0 16px;
  font-size: var(--fz-sub);
  font-family: var(--font-serif);
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.2s;
}

.btn-secondary:hover {
  background-color: #dcbfae;
}

/* --------------------------------------------------------------------------
   出欠ラジオボタン (大型ボタン風)
   -------------------------------------------------------------------------- */
.attendance-selector {
  display: flex;
  gap: 15px;
  margin-bottom: 10px;
}

.attendance-option {
  flex: 1;
  position: relative;
}

.attendance-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.attendance-btn {
  display: block;
  text-align: center;
  padding: 18px 10px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #fff;
  cursor: pointer;
  transition: all 0.25s ease;
}

.attendance-btn .btn-title {
  font-family: var(--font-serif);
  font-size: var(--fz-h2);
  font-weight: bold;
  display: block;
  color: var(--text-primary);
}

.attendance-btn .btn-sub {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  color: var(--text-light);
  margin-top: 4px;
  display: block;
}

.attendance-option input[type="radio"]:checked + .attendance-btn {
  border-color: var(--primary-color);
  background-color: #faf5ed;
  box-shadow: 0 4px 12px rgba(197, 160, 89, 0.2);
}

.attendance-option input[type="radio"]:checked + .attendance-btn .btn-title {
  color: var(--primary-color);
}

/* --------------------------------------------------------------------------
   ご同伴者様・チェックボックス / ラジオ
   -------------------------------------------------------------------------- */
.checkbox-group, .radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-label, .radio-inline-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  cursor: pointer;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background-color: #fcfcfc;
  border: 1px solid #eeeeee;
  transition: background-color 0.2s;
}

.checkbox-label:hover, .radio-inline-label:hover {
  background-color: #f7f5f0;
}

.checkbox-label input[type="checkbox"],
.radio-inline-label input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

.radio-inline-group {
  display: flex;
  gap: 15px;
}

.radio-inline-group .radio-inline-label {
  flex: 1;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   アコーディオン式 ご同伴者様編集カード
   -------------------------------------------------------------------------- */
.accordion-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 10px;
  margin-bottom: 15px;
}

.accordion-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.accordion-card.open {
  border-color: var(--primary-color);
  box-shadow: 0 2px 10px rgba(197, 160, 89, 0.15);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background-color: #faf7f2;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s;
}

.accordion-header:hover {
  background-color: #f5f0e6;
}

.accordion-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.proxy-attendance-selector {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: 6px;
}

.proxy-attend-option {
  cursor: pointer;
  position: relative;
}

.proxy-attend-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.proxy-attend-btn {
  display: inline-block;
  padding: 3px 10px;
  font-size: var(--fz-sub);
  font-family: var(--font-serif);
  border-radius: 14px;
  border: 1px solid var(--border-color);
  background-color: #ffffff;
  color: var(--text-muted);
  transition: all 0.2s ease;
  user-select: none;
}

.proxy-attend-radio:checked + .proxy-attend-btn.attend {
  background-color: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  font-weight: bold;
  box-shadow: 0 2px 6px rgba(197, 160, 89, 0.3);
}

.proxy-attend-radio:checked + .proxy-attend-btn.decline {
  background-color: #888888;
  color: #ffffff;
  border-color: #888888;
  font-weight: bold;
}

.accordion-checkbox {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.accordion-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fz-body);
  color: var(--text-primary);
}

.accordion-badge {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  background-color: var(--secondary-color);
  color: var(--accent-color);
  padding: 2px 8px;
  border-radius: 10px;
}

.accordion-toggle-icon {
  font-size: var(--fz-sub);
  color: var(--primary-color);
  transition: transform 0.25s ease;
}

.accordion-card.open .accordion-toggle-icon {
  transform: rotate(180deg);
}

.accordion-body {
  padding: 18px 16px;
  border-top: 1px solid var(--border-color);
  background-color: #ffffff;
  display: none;
}

.accordion-card.open .accordion-body {
  display: block;
}

.proxy-address-section {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px dashed var(--border-color);
}

.proxy-address-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  font-weight: 600;
  cursor: pointer;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.proxy-address-toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

.proxy-custom-address-box {
  background-color: #fcfbf8;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-top: 10px;
}

.accordion-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 15px;
  padding-top: 10px;
  border-top: 1px dashed #eeeeee;
}

.btn-delete-proxy {
  background-color: #fff5f5;
  color: #c92a2a;
  border: 1px solid #ffc9c9;
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: var(--fz-sub);
  font-family: var(--font-serif);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-delete-proxy:hover {
  background-color: #ffe3e3;
}

.btn-add-proxy {
  width: 100%;
  background-color: #faf5ed;
  color: var(--primary-color);
  border: 2px dashed var(--primary-color);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
  margin-top: 10px;
}

.btn-add-proxy:hover {
  background-color: #f3e9d9;
}

/* --------------------------------------------------------------------------
   アクションボタン
   -------------------------------------------------------------------------- */
.submit-container {
  text-align: center;
  margin-top: 35px;
}

.btn-primary {
  width: 100%;
  max-width: 380px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  color: #ffffff;
  border: none;
  border-radius: 30px;
  padding: 16px 24px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(197, 160, 89, 0.35);
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(197, 160, 89, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* --------------------------------------------------------------------------
   確認画面モーダル
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 3000;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: #fff;
  border-radius: var(--radius-lg);
  max-width: 550px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 30px 25px;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 15px;
  margin-bottom: 20px;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: var(--fz-h2);
  color: var(--primary-color);
}

.summary-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: var(--fz-body);
  margin-bottom: 25px;
}

.summary-item {
  display: flex;
  border-bottom: 1px dashed #efefef;
  padding-bottom: 8px;
}

.summary-label {
  font-family: var(--font-serif);
  font-size: var(--fz-sub);
  font-weight: 600;
  min-width: 110px;
  color: var(--text-muted);
}

.summary-value {
  font-family: var(--font-serif);
  color: var(--text-primary);
  font-size: var(--fz-body);
  flex: 1;
  word-break: break-all;
  white-space: pre-wrap;
}

.modal-actions {
  display: flex;
  gap: 12px;
}

.btn-modal-back {
  flex: 1;
  background-color: #f0f0f0;
  color: #555;
  border: none;
  border-radius: 25px;
  padding: 14px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  font-weight: 600;
  cursor: pointer;
}

.btn-modal-submit {
  flex: 2;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  color: #fff;
  border: none;
  border-radius: 25px;
  padding: 14px;
  font-size: var(--fz-body);
  font-family: var(--font-serif);
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(197, 160, 89, 0.3);
}

/* --------------------------------------------------------------------------
   完了画面 (Success Card)
   -------------------------------------------------------------------------- */
.success-card {
  text-align: center;
  padding: 50px 30px;
}

.success-icon {
  font-size: var(--fz-title);
  color: var(--primary-color);
  margin-bottom: 15px;
}

.success-title {
  font-family: var(--font-serif);
  font-size: var(--fz-h2);
  color: var(--primary-color);
  margin-bottom: 15px;
}

.success-message {
  font-family: var(--font-serif);
  font-size: var(--fz-body);
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 30px;
}

/* アニメーション用表示制御 */
.hidden {
  display: none !important;
}

/* --------------------------------------------------------------------------
   レスポンシブ調整
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }

  .invitation-text {
    font-size: clamp(0.65rem, 3.1vw, 0.85rem);
    line-height: 1.9;
    padding: 0 2px;
  }

  .card {
    padding: 20px 16px;
  }

  .input-row {
    flex-direction: column;
    gap: 0;
  }

  .summary-item {
    flex-direction: column;
    gap: 4px;
  }

  .summary-label {
    min-width: auto;
    font-size: var(--fz-sub);
  }
}