:root {
  --bg: #f5fbff;
  --bg-gradient: linear-gradient(180deg, #d7ecff 0%, #e8f5ff 45%, #f5fbff 85%);
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-elevated: #eef7ff;
  --text: #0f2340;
  --text-secondary: #3b4f6e;
  --text-muted: #7c8aa0;
  --accent: #0ea5e9;
  --accent-deep: #0369a1;
  --accent-soft: #bae6fd;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --border: rgba(14,165,233,0.14);
  --border-strong: rgba(14,165,233,0.30);
  --shadow-sm: 0 2px 8px rgba(14,80,140,0.06);
  --shadow-md: 0 6px 18px rgba(14,80,140,0.10);
  --shadow-lg: 0 10px 30px rgba(14,80,140,0.18);
  --sa-top: env(safe-area-inset-top, 0);
  --sa-bot: env(safe-area-inset-bottom, 0);
  --sa-left: env(safe-area-inset-left, 0);
  --sa-right: env(safe-area-inset-right, 0);
  --radius: 14px;
  --radius-lg: 22px;
  --footer-h: 64px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; margin: 0; padding: 0; }
html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro', 'Hiragino Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  overscroll-behavior-y: none;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
}
body {
  min-height: 100vh; min-height: 100dvh;
  width: 100%;
  overflow-x: hidden;
  background: var(--bg-gradient) no-repeat;
  background-attachment: fixed;
  padding: calc(var(--sa-top) + 10px) calc(14px + var(--sa-right)) calc(var(--footer-h) + var(--sa-bot) + 16px) calc(14px + var(--sa-left));
}

.hidden { display: none !important; }

/* ヘッダー */
.app-header {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
}
.app-logo { font-size: 26px; flex-shrink: 0; }
.app-header-text { flex: 1; min-width: 0; }
.app-title { font-size: 18px; font-weight: 800; letter-spacing: -0.3px; }
.app-subtitle { font-size: 11px; color: var(--text-muted); font-weight: 600; }
#btn-help { flex-shrink: 0; }

/* 使い方モーダル（内容が長いので少し広め） */
.help-section { margin-bottom: 14px; }
.help-section h3 {
  font-size: 14px; font-weight: 800; color: var(--accent-deep);
  margin-bottom: 6px; display: flex; align-items: center; gap: 6px;
}
.help-section p, .help-section li {
  font-size: 13px; line-height: 1.6; color: var(--text-secondary);
}
.help-section ol, .help-section ul {
  padding-left: 20px; margin-top: 4px;
}
.help-section li { margin-bottom: 4px; }
.help-section .tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 11px;
  font-weight: 700;
  margin-right: 4px;
}

/* ページタイトル */
.page-title {
  font-size: 20px; font-weight: 800;
  letter-spacing: -0.3px; line-height: 1.2;
  margin: 4px 0 14px;
}

/* ページ */
.page { display: none; }
.page.active { display: block; }

/* バッジ */
.status-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px; font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent-deep);
  margin-bottom: 10px;
}
.status-badge.danger { background: #fee2e2; color: #b91c1c; }
.status-badge.success { background: #d1fae5; color: #047857; }

/* カード */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
}
.card-title {
  font-size: 13px; font-weight: 800; color: var(--text-secondary);
  margin-bottom: 10px;
  display: flex; align-items: center; justify-content: space-between;
}
.card-hint { font-size: 11px; color: var(--text-muted); font-weight: 500; margin-top: 4px; }

/* フォーム */
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 8px;
}
.form-row.cols-2 { grid-template-columns: 1fr 1fr; }
.form-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

label.lbl {
  font-size: 11px; font-weight: 700; color: var(--text-secondary);
  display: block; margin-bottom: 4px;
}

input[type="text"], input[type="number"], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--bg-input);
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  -webkit-appearance: none;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.15);
}

/* ボタン */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 16px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 14px; font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 6px 10px; font-size: 12px; }
.btn.block { width: 100%; }

/* 行アイテム（リスト） */
.item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.item:last-child { border-bottom: none; }
.item-main { flex: 1; }
.item-title { font-size: 14px; font-weight: 700; }
.item-sub { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* チップ */
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: #fff;
  font-size: 12px; font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: inherit;
}
.chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* サマリータイル */
.summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
}
.tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow-sm);
}
.tile-label {
  font-size: 11px; color: var(--text-muted); font-weight: 700;
  margin-bottom: 4px;
}
.tile-value {
  font-size: 18px; font-weight: 800; letter-spacing: -0.3px;
  color: var(--text);
}
.tile-value.danger { color: var(--danger); }
.tile-value.success { color: var(--success); }
.tile-sub { font-size: 10px; color: var(--text-muted); margin-top: 2px; }

/* CFテーブル */
.cf-table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}
.cf-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  min-width: 620px;
}
.cf-table thead th {
  padding: 6px 8px;
  text-align: right;
  font-weight: 800;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  position: sticky; top: 0;
  white-space: nowrap;
}
.cf-table thead th:first-child,
.cf-table thead th:nth-child(2) { text-align: center; }
.cf-table tbody td {
  padding: 5px 8px;
  text-align: right;
  border-bottom: 1px solid rgba(0,0,0,0.04);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.cf-table tbody td:first-child,
.cf-table tbody td:nth-child(2) { text-align: center; font-weight: 700; color: var(--text-secondary); }
.cf-table tr.negative td { background: rgba(239,68,68,0.06); }
.cf-table tr.exhausted td { background: rgba(239,68,68,0.18); color: var(--danger); font-weight: 700; }
.cf-table td.pos { color: var(--success); }
.cf-table td.neg { color: var(--danger); }

/* グラフコンテナ */
.chart-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  height: 260px;
  position: relative;
}

/* 下部タブ */
.tab-bar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
  display: flex; justify-content: space-around; align-items: stretch;
  padding: 6px calc(6px + var(--sa-left)) calc(6px + var(--sa-bot)) calc(6px + var(--sa-right));
  background: rgba(245,251,255,0.94);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 0.5px solid var(--border);
}
.tab-btn {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; padding: 6px 2px; border: none; background: transparent;
  color: var(--text-muted); font-size: 9px; font-weight: 700;
  cursor: pointer; font-family: inherit;
  border-radius: 10px;
}
.tab-btn .ico { font-size: 20px; }
.tab-btn.active { color: var(--accent); }

/* MFインポートゾーン */
.drop-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  background: var(--bg-elevated);
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
}
.drop-zone.dragging {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.drop-zone .icon { font-size: 28px; margin-bottom: 6px; }
.drop-zone .label { font-size: 13px; font-weight: 700; color: var(--text-secondary); }
.drop-zone .sub { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* 差分プレビュー */
.diff-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 13px;
}
.diff-arrow { color: var(--text-muted); font-size: 11px; }
.diff-before { color: var(--text-muted); font-variant-numeric: tabular-nums; }
.diff-after { color: var(--accent-deep); font-weight: 700; font-variant-numeric: tabular-nums; }

/* スクロールヒント */
.scroll-hint {
  font-size: 10px; color: var(--text-muted); text-align: center; margin-top: 4px;
}

/* 空の状態 */
.empty {
  padding: 20px 10px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* モーダル */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(15,35,64,0.5);
  display: flex; align-items: flex-end; justify-content: center;
  animation: fadein 0.15s ease-out;
}
.modal-backdrop.hidden { display: none; }
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--bg-card);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-lg);
  padding-bottom: var(--sa-bot);
  animation: slideup 0.2s ease-out;
}
@media (min-width: 600px) {
  .modal-backdrop { align-items: center; }
  .modal { border-radius: var(--radius-lg); max-height: 80vh; }
}
@keyframes slideup { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px 8px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 17px; font-weight: 800; color: var(--text); }
.modal-close {
  background: transparent; border: none; font-size: 24px; color: var(--text-muted);
  cursor: pointer; line-height: 1; padding: 4px 8px;
}
.modal-body {
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
}
.modal-body .form-row { margin-bottom: 14px; }
.modal-body .form-row:last-child { margin-bottom: 0; }
.modal-body .lbl { font-size: 12px; }
.modal-body .hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.modal-footer {
  display: flex; gap: 10px; padding: 12px 20px 16px;
  border-top: 1px solid var(--border);
}
.modal-footer .btn { flex: 1; }