/* =============================================
   会議アジェンダビルダー — スタイルシート
   モバイルファースト設計
   ============================================= */

/* --- リセット & ベース --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary:    #2563eb;
  --color-primary-d:  #1d4ed8;
  --color-accent:     #0ea5e9;
  --color-success:    #16a34a;
  --color-danger:     #dc2626;
  --color-warn:       #d97706;
  --color-bg:         #f8fafc;
  --color-surface:    #ffffff;
  --color-border:     #e2e8f0;
  --color-text:       #1e293b;
  --color-text-muted: #64748b;
  --color-label-bg:   #eff6ff;
  --radius-sm:        6px;
  --radius-md:        10px;
  --radius-lg:        14px;
  --shadow-sm:        0 1px 3px rgba(0,0,0,.08);
  --shadow-md:        0 4px 12px rgba(0,0,0,.10);
  --font-base:        'Hiragino Sans', 'Meiryo', 'Yu Gothic', sans-serif;
}

html { font-size: 16px; }

body {
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- AdSenseプレースホルダー --- */
.ad-unit { margin: 1.25rem 0; }

/* --- ヘッダー --- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 1rem 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.back-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  min-height: 44px;
  padding: 0.25rem 0;
}
.back-link:hover { color: var(--color-primary); text-decoration: none; }

.header-content { margin-top: 0.25rem; }

.site-header h1 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.subtitle {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* --- モバイルタブ --- */
.mobile-tabs {
  display: flex;
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 89px;
  z-index: 90;
}

.tab-btn {
  flex: 1;
  padding: 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  color: var(--color-text-muted);
  min-height: 44px;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: -2px;
}
.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* --- アプリレイアウト（モバイル: 縦並び） --- */
.app-layout {
  display: flex;
  flex-direction: column;
  padding: 0 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* --- 入力パネル --- */
.input-panel {
  width: 100%;
  padding-top: 1rem;
}

.input-panel.hidden { display: none; }

/* --- プレビューパネル --- */
.preview-panel {
  display: none;
  width: 100%;
  padding-top: 1rem;
}

.preview-panel.active { display: block; }

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.preview-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.preview-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  min-height: 200px;
  box-shadow: var(--shadow-sm);
}

/* --- フォームブロック --- */
.form-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.block-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 0.75rem;
  display: block;
}
h2.block-label {
  font-size: 0.8rem;
}

/* --- テンプレートボタン --- */
.template-block { padding-bottom: 0.75rem; }

.template-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.template-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: 99px;
  background: var(--color-surface);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text-muted);
  min-height: 44px;
  transition: all 0.2s;
}
.template-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.template-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* --- フォームグループ --- */
.form-group {
  margin-bottom: 0.75rem;
}
.form-group:last-child { margin-bottom: 0; }

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.3rem;
}

.required {
  background: #fef2f2;
  color: var(--color-danger);
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  margin-left: 0.3rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

input[type="text"],
input[type="url"],
input[type="number"],
input[type="datetime-local"],
textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 44px;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

textarea {
  min-height: 64px;
  resize: vertical;
}

/* --- アジェンダリスト --- */
.agenda-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.agenda-item {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  background: var(--color-bg);
  position: relative;
}

.agenda-item-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.agenda-num {
  background: var(--color-primary);
  color: #fff;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
}

.agenda-title-input {
  flex: 1;
  font-weight: 600;
  min-height: 44px;
  padding: 0.3rem 0.6rem;
}

.agenda-item-controls {
  display: flex;
  gap: 0.25rem;
  flex-shrink: 0;
}

.agenda-ctrl-btn {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all 0.15s;
  min-height: 44px;
  min-width: 44px;
}
.agenda-ctrl-btn:hover { background: var(--color-label-bg); color: var(--color-primary); }
.agenda-ctrl-btn.delete:hover { background: #fef2f2; color: var(--color-danger); }

.agenda-item-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.agenda-meta-label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-bottom: 0.15rem;
  display: block;
}

.agenda-memo-area {
  margin-top: 0.5rem;
}

/* --- 時間合計 --- */
.time-summary {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  background: var(--color-label-bg);
  border-radius: var(--radius-sm);
  margin-top: 0.5rem;
}
.time-summary strong {
  color: var(--color-primary);
  font-size: 1.1rem;
}

/* --- アクションボタン --- */
.action-block {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-print {
  flex: 1;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 48px;
  transition: background 0.2s, transform 0.1s;
  box-shadow: var(--shadow-sm);
}
.btn-print:hover { background: var(--color-primary-d); transform: translateY(-1px); }
.btn-print:active { transform: translateY(0); }

.btn-clear {
  padding: 0.75rem 1.25rem;
  background: var(--color-surface);
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 48px;
  transition: all 0.2s;
}
.btn-clear:hover { border-color: var(--color-danger); color: var(--color-danger); }

.btn-add-agenda {
  width: 100%;
  padding: 0.6rem;
  background: var(--color-label-bg);
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
  transition: background 0.2s;
}
.btn-add-agenda:hover { background: #dbeafe; }

/* --- 使い方セクション --- */
.howto-section {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.howto-section h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  border-left: 4px solid var(--color-primary);
  padding-left: 0.6rem;
}
.howto-section ol {
  padding-left: 1.4rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.howto-section ol li { margin-bottom: 0.35rem; }
.howto-section p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* --- フッター --- */
.site-footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.site-footer p { margin-bottom: 0.3rem; }
.site-footer a { color: var(--color-text-muted); }
.site-footer a:hover { color: var(--color-primary); }

/* =============================================
   プレビュー内スタイル
   ============================================= */
.pv-doc {
  font-family: 'Hiragino Sans', 'Meiryo', 'Yu Gothic', sans-serif;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #1e293b;
}

.pv-title {
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 2.5px solid #1e293b;
}

.pv-meta-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  font-size: 0.85rem;
}
.pv-meta-table th {
  width: 6rem;
  text-align: left;
  padding: 0.3rem 0.5rem;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  font-weight: 600;
  color: #475569;
}
.pv-meta-table td {
  padding: 0.3rem 0.5rem;
  border: 1px solid #cbd5e1;
  color: #1e293b;
  word-break: break-all;
}

.pv-agenda-heading {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 1rem 0 0.5rem;
  padding: 0.3rem 0.6rem;
  background: #1e293b;
  color: #fff;
  border-radius: 4px;
}

.pv-agenda-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  margin-bottom: 0.5rem;
}
.pv-agenda-table thead th {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  padding: 0.3rem 0.5rem;
  text-align: left;
  font-weight: 600;
  color: #475569;
  white-space: nowrap;
}
.pv-agenda-table tbody td {
  border: 1px solid #cbd5e1;
  padding: 0.4rem 0.5rem;
  vertical-align: top;
}
.pv-agenda-table tbody tr:nth-child(even) td { background: #f8fafc; }

.pv-total {
  text-align: right;
  font-size: 0.85rem;
  font-weight: 600;
  color: #2563eb;
  margin: 0.5rem 0 1rem;
}

.pv-memo-section {
  margin-top: 1rem;
}
.pv-memo-heading {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  border-bottom: 1px solid #cbd5e1;
  padding-bottom: 0.2rem;
}
.pv-memo-box {
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  min-height: 80px;
  padding: 0.5rem;
  font-size: 0.82rem;
  color: #64748b;
}

.pv-empty {
  text-align: center;
  color: #94a3b8;
  font-size: 0.875rem;
  padding: 2rem 0;
}

/* =============================================
   デスクトップ：2カラムレイアウト
   ============================================= */
@media (min-width: 900px) {
  .mobile-tabs { display: none; }

  .app-layout {
    flex-direction: row;
    gap: 1.5rem;
    align-items: flex-start;
    padding-top: 1.5rem;
  }

  .input-panel {
    flex: 0 0 420px;
    max-width: 420px;
    padding-top: 0;
  }
  .input-panel.hidden { display: block; }

  .preview-panel {
    display: block;
    flex: 1;
    padding-top: 0;
    position: sticky;
    top: 100px;
  }
  .preview-panel.active { display: block; }

  .site-header {
    padding: 0.75rem 1.5rem 1rem;
  }
  .site-header h1 { font-size: 1.35rem; }

  .preview-content {
    max-height: calc(100vh - 160px);
    overflow-y: auto;
  }
}

@media (min-width: 1200px) {
  .input-panel { flex: 0 0 480px; max-width: 480px; }
}

/* =============================================
   印刷用CSS
   ============================================= */
@media print {
  /* 入力パネル・ヘッダー・フッター・広告を非表示 */
  .site-header,
  .site-footer,
  .mobile-tabs,
  .input-panel,
  .ad-unit,
  .preview-header {
    display: none !important;
  }

  body {
    background: #fff;
    font-size: 10pt;
  }

  .app-layout {
    display: block;
    padding: 0;
    max-width: none;
  }

  .preview-panel {
    display: block !important;
    position: static;
    width: 100%;
    padding: 0;
  }

  .preview-content {
    border: none;
    box-shadow: none;
    padding: 0;
    max-height: none;
    overflow: visible;
  }

  .pv-agenda-table { page-break-inside: avoid; }

  a { color: inherit; text-decoration: none; }
}