html { overflow-y: scroll; }
:root {
  --bg-page: linear-gradient(135deg, #f8faff 0%, #e8f2ff 50%, #dae8ff 100%);
  --bg-card: #ffffff;
  --accent: #0071e3;
  --radius: 12px;
  --transition: 0.3s ease;
  font-size: 16px;
}

/* ナビバーアイコンのスタイル */
nav ul li a i {
  margin-right: 8px;
  font-size: 1.1em;
}

/* アクティブなページのアイコン - 青色 */
nav ul li a.active i {
  color: #007AFF;
}

/* アクティブでないページのアイコン - グレーの線だけ */
nav ul li a:not(.active) i {
  color: #999;
  opacity: 0.7;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg-page);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #1d1d20;
  padding-top: 64px;
  padding-left: 32px;
  padding-right: 32px;
  font-size: 16px;
  overflow-x: hidden;
  position: relative;
}

/* 背景装飾 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(147, 197, 253, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(96, 165, 250, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}



/* メイン見出し */
h1 {
  text-align: center; font-size: 2rem;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--accent), #5ac8fa);
  -webkit-background-clip: text; color: transparent;
  white-space: nowrap;
}
.subtitle {
  text-align: center; font-size: 1.2rem;
  margin-bottom: 2rem; color: #6e6e73;
}
@media (max-width: 900px) {
  .subtitle { font-size: 1.05rem; }
}
@media (max-width: 600px) {
  .subtitle { font-size: 0.97rem; margin-bottom: 1.2rem; }
}

/* カード */
.card {
  background: var(--bg-card);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.13);
  max-width: 900px;
  margin: 24px auto 40px;
  padding: 19px 19px 32px 19px;
  transition: box-shadow var(--transition);
  text-align: center;
}
.card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.card a {
  display: inline-block; margin: 8px 16px; padding: 12px 24px;
  background: var(--accent); color: #fff; text-decoration: none;
  border-radius: var(--radius); transition: background var(--transition);
}
.card a:hover { background: #005bb5; }
.card-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
  user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  width: 100%;
}
.card-buttons a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 160px;
  min-width: 128px;
  max-width: 192px;
  height: 160px;
  min-height: 128px;
  max-height: 192px;
  font-size: 19px;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  border-radius: 19px;
  text-decoration: none;
  box-shadow: 0 4px 24px rgba(0, 113, 227, 0.18), 0 1.5px 6px rgba(0,0,0,0.10);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  text-align: center;
  padding: 8px;
  user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  font-family: inherit;
}
.card-buttons i {
  font-size: 45px;
  margin-bottom: 5px;
  flex-shrink: 0;
}
@media (max-width: 900px) {
  .card-buttons {
    gap: 19px;
  }
  .card-buttons a {
    width: 152px;
    min-width: 144px;
    max-width: 176px;
    height: 136px;
    min-height: 128px;
    max-height: 160px;
    font-size: 17px;
    padding: 6px;
  }
  .card-buttons i {
    font-size: 34px;
  }
}
@media (max-width: 600px) {
  .card-buttons {
    gap: 11px;
  }
  .card-buttons a {
    width: 128px;
    min-width: 120px;
    max-width: 144px;
    height: 120px;
    min-height: 112px;
    max-height: 144px;
    font-size: 16px;
    padding: 5px;
  }
  .card-buttons i {
    font-size: 26px;
  }
}
@media (max-width: 600px) {
  .card {
    padding-left: 2px;
    padding-right: 2px;
  }
}

/* 共通カードアニメーション */
.card, .dynamic-card {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(.4,0,.2,1), transform 0.7s cubic-bezier(.4,0,.2,1);
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  max-width: 832px;
  box-sizing: border-box;
}
.card.visible, .dynamic-card.visible {
  opacity: 1;
  transform: none;
}

/* 更新履歴より下のカード（.dynamic-card で id が history-card より後） */
#bbs-card,
#about-card,
#info-card {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}

/* 新着投稿カード */
.dynamic-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  margin: 32px auto;
  padding: 24px 24px 32px 24px;
  text-align: center;
  width: 100%;
  box-sizing: border-box;
}
.dynamic-card .card-title {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 19px;
  color: var(--accent);
}
.recent-files {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 19px;
}
.recent-file {
  background: #f6f8fa;
  border-radius: 14px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
  padding: 16px 19px;
  min-width: 160px;
  max-width: 224px;
  flex: 1 1 160px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: box-shadow 0.3s;
}
.recent-file:hover {
  box-shadow: 0 4px 16px rgba(0,113,227,0.13);
}
.recent-file .file-title {
  font-weight: 600;
  color: #1d1d20;
  margin-bottom: 5px;
}
.recent-file .file-meta {
  font-size: 15px;
  color: #6e6e73;
}

/* 更新履歴カード */
.history-list {
  text-align: left;
  margin: 19px auto 0 auto;
  max-width: 640px;
  padding-left: 19px;
}
.history-list li {
  margin-bottom: 11px;
  color: #333;
  font-size: 16px;
}

/* 概要・問い合わせボタンカード */
.info-buttons {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 19px;
}
.info-buttons a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 35px;
  font-size: 17px;
  font-weight: 600;
  background: #e8ecf2;
  color: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  box-shadow: 0 2px 11px rgba(0,0,0,0.10);
  transition: background var(--transition), color var(--transition);
}
.info-buttons a:hover {
  background: #d0e4fd;
  color: #005bb5;
}

.card-info-text {
  margin-top: 40px;
  text-align: left;
  font-size: 19px;
  color: #444;
  line-height: 1.95;
  max-width: 900px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 21px;
  padding-left: 64px;
  padding-right: 64px;
  padding-top: 24px;
  padding-bottom: 24px;
  box-sizing: border-box;
  background: rgba(255,255,255,0.8);
  border-radius: 19px;
}

.info-highlight {
  color: #3b82f6;
}

@media (min-width: 700px) {
  .card-info-text {
    max-width: 900px;
    font-size: 20px;
    gap: 22px;
  }
}
@media (max-width: 600px) {
  .card-info-text {
    font-size: 15px;
    gap: 11px;
  }
  .card-info-text .test-examples {
    font-size: 15px;
  }
}
.card-info-text .info-note {
  font-size: 14px;
  color: #888;
  display: inline-block;
  margin-left: 8px;
}
.card-info-text .test-examples {
  text-align: center;
  margin: 2px 0 3px 0;
  font-size: 17px;
  letter-spacing: 1px;
  width: 100%;
}
@media (max-width: 600px) {
  .card-info-text {
    font-size: 15px;
    gap: 11px;
  }
  .card-info-text .test-examples {
    font-size: 15px;
  }
}
.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.info-list li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  background: rgba(240,245,255,0.6);
  border-radius: 11px;
  padding: 11px 16px;
}
.info-icon {
  color: #0071e3;
  font-size: 19px;
  margin-top: 2px;
  flex-shrink: 0;
}
.info-note {
  font-size: 14px;
  color: #888;
  margin-left: 8px;
}
.info-examples {
  font-weight: 500;
  color: #0071e3;
  margin-left: 5px;
  text-align: center;
  display: block;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}
.info-bold {
  font-weight: bold;
  color: #0071e3;
}

/* フリーモード表示デザインはcommon.cssで統一 */

/* 先頭のpタグ（.info-lead）を追加し、フォントサイズを調整 */
.info-lead {
  font-size: 1.05rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: #333;
  text-align: center;
}

main {
  max-width: 98vw;
  margin: 6rem auto 2rem;
  padding-left: 2vw;
  padding-right: 2vw;
  box-sizing: border-box;
}

@media (max-width: 700px) {
  .card, .dynamic-card {
    max-width: 900px;
    padding-left: 8px;
    padding-right: 8px;
    margin-left: 8px;
    margin-right: 8px;
  }
  .recent-files {
    gap: 11px;
  }

  h1 { font-size: 1.8rem; }
}

@media (max-width: 600px) {
  .info-lead { font-size: 0.97rem; margin-top: 1rem; }

  h1 { font-size: 1.6rem; }
  body {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 480px) {

  h1 { font-size: 1.4rem; }
  body {
    padding-left: 8px;
    padding-right: 8px;
  }
}

@media (max-width: 600px) {
  body {
    padding-left: 4px;
    padding-right: 4px;
    font-size: 15px;
  }

  .card, .dynamic-card, .card-info-text {
    max-width: 100%;
    padding-left: 2vw;
    padding-right: 2vw;
    margin-left: 0;
    margin-right: 0;
    border-radius: 12px;
  }
  .card {
    padding-top: 12px;
    padding-bottom: 18px;
  }
  .dynamic-card {
    padding: 12px 2vw 18px 2vw;
  }
  .card-info-text {
    padding-left: 2vw;
    padding-right: 2vw;
    font-size: 15px;
    gap: 10px;
  }
  .card-buttons {
    flex-direction: column;
    gap: 8px;
    width: 100%;
    margin-top: 12px;
    margin-bottom: 18px;
  }
  .card-buttons a {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    height: 48px;
    min-height: 44px;
    max-height: 56px;
    font-size: 16px;
    padding: 6px 0;
    flex-direction: row;
    justify-content: flex-start;
    gap: 10px;
    border-radius: 10px;
  }
  .card-buttons i {
    font-size: 22px;
    margin-bottom: 0;
  }
  .recent-files {
    gap: 7px;
    flex-direction: column;
    align-items: stretch;
  }
  .recent-file {
    min-width: 0;
    max-width: 100%;
    padding: 10px 8px;
    font-size: 15px;
  }
  .history-list {
    padding-left: 8px;
    font-size: 15px;
  }
  .history-list li {
    font-size: 15px;
    margin-bottom: 7px;
  }
  .info-list {
    gap: 8px;
  }
  .info-list li {
    padding: 7px 8px;
    font-size: 14px;
  }
  .info-buttons {
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
  }
  .info-buttons a {
    width: 100%;
    justify-content: center;
    font-size: 15px;
    padding: 10px 0;
    border-radius: 8px;
  }
  .share-url-input {
    width: 100% !important;
    max-width: 100vw !important;
    font-size: 15px !important;
    padding: 0.5em 0.5em !important;
  }
  .copy-btn, .print-btn, .share-btn {
    width: 100%;
    font-size: 15px;
    padding: 0.7em 0;
    margin-left: 0 !important;
    border-radius: 8px;
    justify-content: center;
  }
  .share-buttons {
    flex-direction: column;
    gap: 8px;
    width: 100%;
  }
  .print-btn {
    margin-top: 0.7rem !important;
    margin-bottom: 0.7rem !important;
  }
  #copyToast {
    min-width: 0;
    font-size: 0.95em;
    padding: 0.3em 0.7em;
  }
  iframe {
    min-height: 120px !important;
    border-radius: 0.7rem !important;
  }
  h1 {
    font-size: 1.2rem;
    margin: 70px 0 10px 0;
    white-space: normal;
  }
  .subtitle {
    font-size: 0.95rem;
    margin-bottom: 0.7rem;
  }
}

/* 掲示板ボタン */
.bbs-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 24px rgba(0, 113, 227, 0.18), 0 1.5px 6px rgba(0,0,0,0.10);
  min-height: 44px;
  height: 48px;
  margin-bottom: 4px;
}
.bbs-btn:hover {
  background: #005bb5;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.2);
}
.bbs-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.13);
}
.bbs-btn i {
  font-size: 22px;
}

/* 管理者モーダル */
.pin-btn {
  background: #f0f0f0;
  border: none;
  border-radius: 8px;
  padding: 12px;
  font-size: 18px;
  cursor: pointer;
  transition: background 0.2s;
}
.pin-btn:hover {
  background: #e0e0e0;
}

/* コピーライト */
.copyright-note {
  font-size: 20px;
  color: #888;
  text-align: center;
  margin-top: 18px;
  margin-bottom: 18px;
}

/* 統計情報セクション */
.section-title {
  font-size: 20px;
  font-weight: 700;
  color: #3b82f6;
  text-align: center;
  margin-bottom: 16px;
  line-height: 1.3;
}

.stats-section {
  margin-bottom: 20px;
  max-width: 832px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
}

.stat-card {
  background: var(--bg-card);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.13);
  padding: 19px 19px 32px 19px;
  text-align: center;
  transition: box-shadow var(--transition);
}

.stat-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.stat-number {
  font-size: 24px;
  font-weight: 700;
  color: #3b82f6;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: #64748b;
  font-weight: 500;
}

/* 統計カードのレスポンシブ対応 */
@media (max-width: 700px) {
  .stats-section {
    margin-left: 8px;
    margin-right: 8px;
  }
  
  .stats-grid {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (max-width: 600px) {
  .stats-section {
    margin-left: 0;
    margin-right: 0;
  }
  
  .stats-grid {
    gap: 12px;
  }
  
  .stat-card {
    padding: 12px 2vw 18px 2vw;
    border-radius: 12px;
  }
  
  .stat-number {
    font-size: 20px;
  }
  
  .stat-label {
    font-size: 11px;
  }
}