/* ===== リセット & 基本設定 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:      #1a73e8;
  --primary-dark: #1557b0;
  --accent:       #34a853;
  --danger:       #ea4335;
  --warn-bg:      #fef3d0;
  --warn-text:    #b06000;
  --warn-border:  #f7d87c;
  --bg:           #f8f9fa;
  --surface:      #ffffff;
  --border:       #dadce0;
  --text:         #202124;
  --text-sub:     #5f6368;
  --shadow:       0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --radius:       8px;
  --radius-lg:    12px;
}

body {
  font-family: 'Hiragino Kaku Gothic ProN','ヒラギノ角ゴ ProN W3','Meiryo','メイリオ',sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}

/* ===== ヘッダー ===== */
header {
  background: var(--primary); color: white;
  padding: 14px 24px; display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow); position: sticky; top: 0; z-index: 100;
}
header h1  { font-size: 1.15rem; font-weight: 600; }
header .icon { font-size: 1.4rem; }

/* ===== タブ ===== */
.nav-tabs {
  display: flex; gap: 4px; padding: 14px 24px 0;
  border-bottom: 2px solid var(--border); background: var(--surface);
}
.nav-tab {
  padding: 9px 18px; border: none; background: none; cursor: pointer;
  color: var(--text-sub); font-size: .9rem;
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  transition: all .2s; border-radius: var(--radius) var(--radius) 0 0;
  font-family: inherit;
}
.nav-tab:hover  { color: var(--primary); background: rgba(26,115,232,.06); }
.nav-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

.tab-content         { display: none; }
.tab-content.active  { display: block; }
main { padding: 20px 24px; max-width: 960px; margin: 0 auto; }

/* ===== カード ===== */
.card {
  background: var(--surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 20px 24px; margin-bottom: 18px;
}
.card-title {
  font-size: .95rem; font-weight: 600; margin-bottom: 16px;
  padding-bottom: 10px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}

/* ===== フォーム行 ===== */
.form-row-date {
  display: grid;
  grid-template-columns: 160px 1fr auto 1fr;
  gap: 12px; align-items: end; margin-bottom: 14px;
}
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: .82rem; font-weight: 500; color: var(--text-sub); }
.form-group input {
  padding: 10px 12px; border: 1.5px solid var(--border); border-radius: var(--radius);
  font-size: .95rem; font-family: inherit; background: var(--bg); transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,115,232,.15); background: white;
}

.swap-btn {
  width: 40px; height: 40px; border-radius: 50%;
  border: 1.5px solid var(--border); background: white; cursor: pointer;
  font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  transition: all .2s; align-self: flex-end;
}
.swap-btn:hover { background: var(--primary); border-color: var(--primary); color: white; }

/* ===== ボタン ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 22px; border: none; border-radius: var(--radius);
  font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: all .2s; font-family: inherit; text-decoration: none;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: var(--shadow); }
.btn-primary:disabled { background: #aaa; cursor: not-allowed; }
.btn-success { background: var(--accent); color: white; }
.btn-success:hover { background: #2d8e47; }
.btn-outline { background: white; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: rgba(26,115,232,.06); }
.btn-sm { padding: 7px 14px; font-size: .82rem; }

.checkbox-label {
  display: inline-flex; align-items: center; gap: 7px;
  cursor: pointer; font-size: .95rem; font-weight: 500;
  padding: 8px 14px; border-radius: var(--radius);
  border: 1.5px solid var(--border); background: white;
  transition: all .2s; user-select: none;
}
.checkbox-label:hover { border-color: var(--primary); color: var(--primary); }
.checkbox-label input[type="checkbox"] {
  width: 16px; height: 16px; cursor: pointer; accent-color: var(--primary);
}

.form-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ===== ローディング ===== */
.loading { display: none; text-align: center; padding: 32px; color: var(--text-sub); }
.loading.active { display: block; }
.spinner {
  width: 36px; height: 36px; border: 3px solid var(--border);
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin .8s linear infinite; margin: 0 auto 10px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== メッセージ ===== */
.message { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 14px; font-size: .88rem; }
.message.info    { background: #e8f0fe; color: #1557b0; border: 1px solid #bcd0f5; }
.message.warn    { background: var(--warn-bg); color: var(--warn-text); border: 1px solid var(--warn-border); }
.message.error   { background: #fce8e6; color: #c62828; border: 1px solid #f5a8a3; }
.message.success { background: #e6f4ea; color: #1e7e34; border: 1px solid #a8d5b5; }

/* ===== 経路選択 ===== */
#route-select-area { display: none; }

.route-card {
  border: 1.5px solid var(--border); border-radius: var(--radius);
  padding: 14px; margin-bottom: 10px; cursor: pointer; transition: all .2s; position: relative;
}
.route-card:hover    { border-color: var(--primary); background: rgba(26,115,232,.03); }
.route-card.selected { border-color: var(--primary); background: rgba(26,115,232,.07); box-shadow: 0 0 0 2px rgba(26,115,232,.2); }
.badge-selected {
  position: absolute; top: 10px; right: 10px;
  background: var(--primary); color: white;
  font-size: .72rem; padding: 2px 7px; border-radius: 10px; display: none;
}
.route-card.selected .badge-selected { display: inline; }

.route-info { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin-bottom: 4px; }
.route-fare { font-size: 1.35rem; font-weight: 700; color: var(--danger); }
.route-fare.unknown { font-size: .95rem; color: var(--text-sub); }
.route-duration   { font-size: 1rem; font-weight: 500; }
.route-transfers  { font-size: .82rem; color: var(--text-sub); background: var(--bg); padding: 2px 8px; border-radius: 10px; }
.route-times      { font-size: .82rem; color: var(--text-sub); }
.route-via        { font-size: .82rem; color: var(--text-sub); margin-top: 2px; }

.ext-links-section { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.ext-links-label   { font-size: .8rem; color: var(--text-sub); display: block; margin-bottom: 8px; }
.external-links    { display: flex; gap: 8px; flex-wrap: wrap; }
.ext-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 12px; border-radius: var(--radius); text-decoration: none;
  font-size: .82rem; font-weight: 500; border: 1.5px solid var(--border);
  color: var(--text); background: white; transition: all .2s;
}
.ext-link:hover { border-color: var(--primary); color: var(--primary); }

.manual-note-row {
  display: flex; gap: 12px; align-items: flex-end;
  margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border);
}

/* ===== ステップバッジ ===== */
.step-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--primary); color: white; font-size: .75rem; font-weight: 700; flex-shrink: 0;
}

/* ===== 累積リスト ===== */
.count-badge {
  background: var(--primary); color: white;
  font-size: .75rem; padding: 2px 8px; border-radius: 10px; font-weight: 600;
}
.total-badge { font-size: .95rem; font-weight: 700; color: var(--danger); }

.date-warn {
  width: 100%; font-size: .82rem; font-weight: 400;
  background: var(--warn-bg); color: var(--warn-text);
  border: 1px solid var(--warn-border);
  padding: 6px 10px; border-radius: var(--radius); margin-top: 4px;
}
.list-empty {
  text-align: center; padding: 28px; color: var(--text-sub); font-size: .9rem;
}
.btn-remove {
  border: none; background: none; cursor: pointer; color: var(--text-sub);
  font-size: .95rem; padding: 2px 6px; border-radius: 4px; transition: color .2s;
}
.btn-remove:hover { color: var(--danger); }

/* ===== テーブル共通 ===== */
.history-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th { background: var(--bg); font-weight: 600; padding: 9px 11px; text-align: left; border-bottom: 2px solid var(--border); white-space: nowrap; }
td { padding: 9px 11px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:hover td { background: rgba(26,115,232,.025); }
.fare-cell { font-weight: 700; color: var(--danger); }
.text-sub  { color: var(--text-sub); font-size: .82rem; }

/* ===== 統計 ===== */
.stats-row { display: flex; gap: 14px; flex-wrap: wrap; }
.stat-card { flex: 1; min-width: 130px; background: var(--bg); border-radius: var(--radius); padding: 14px 16px; text-align: center; }
.stat-value { font-size: 1.6rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: .78rem; color: var(--text-sub); margin-top: 2px; }

/* ===== route-title-sub ===== */
.route-title-sub { font-weight: 400; color: var(--text-sub); font-size: .88rem; }

/* ===== 編集モーダル ===== */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 500; padding: 16px;
}
.modal-box {
  background: white; border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,.25);
  padding: 24px 28px; width: 100%; max-width: 620px;
  max-height: 90vh; overflow-y: auto;
}
.modal-title {
  font-size: 1.05rem; font-weight: 700; margin-bottom: 18px;
  padding-bottom: 10px; border-bottom: 1px solid var(--border);
}

/* ===== 印刷専用エリア ===== */
#print-area { display: none; }

@media print {
  header, .nav-tabs, #tab-search, #tab-history { display: none !important; }
  body { background: white; font-size: 11pt; }

  #print-area {
    display: block !important;
    padding: 20px;
  }
  .print-header { text-align: center; margin-bottom: 20px; border-bottom: 2px solid #333; padding-bottom: 12px; }
  .print-header h2 { font-size: 17pt; margin-bottom: 4px; }
  .print-header p  { font-size: 9pt; color: #555; }

  .print-table { width: 100%; border-collapse: collapse; font-size: 10pt; }
  .print-table th, .print-table td { border: 1px solid #999; padding: 7px 10px; }
  .print-table th { background: #f0f0f0; font-weight: 600; white-space: nowrap; }
  .fare-cell { font-weight: 700; color: #c00; }
}

/* ===== レスポンシブ ===== */
@media (max-width: 640px) {
  main { padding: 14px; }
  .form-row-date { grid-template-columns: 1fr 1fr; }
  .form-row-date > .form-group:first-child { grid-column: span 2; }
  .swap-btn { display: none; }
  .manual-note-row { flex-direction: column; }
}