/* backoffice-template base CSS
 *
 * すべての色を CSS 変数化して
 * `<html data-theme="dark">` でダークモード切替できる。
 *
 * 切替は layout.js の applyTheme() が localStorage / OS 設定を見て自動。
 */

:root {
  /* light theme(default)*/
  --bg-page: #f9fafb;
  --bg-card: #ffffff;
  --bg-soft: #f3f4f6;
  --bg-input: #ffffff;
  --bg-input-hover: #f8fafc;
  --bg-table-head: #f9fafb;
  --bg-table-row-hover: #eff6ff;
  --bg-chip-muted: #f1f5f9;

  --text: #1a1a2e;
  --text-heading: #111827;
  --text-muted: #4b5563;  /* 老眼配慮: 白背景でのコントラスト強化 */
  --text-muted-strong: #475569;
  --text-placeholder: #9ca3af;
  --text-on-primary: #ffffff;

  --border: #e5e7eb;
  --border-soft: #f3f4f6;
  --border-input: #d1d5db;
  --border-input-focus: #818cf8;
  --border-input-shadow: rgba(99, 102, 241, 0.2);

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-active: #3730a3;
  --primary-soft: #eef2ff;
  --primary-soft-text: #4338ca;

  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-soft: #fef2f2;
  --danger-soft-text: #b91c1c;

  --success-soft: #f0fdf4;
  --success-soft-text: #15803d;
  --success-soft-border: #bbf7d0;

  --info-soft: #eff6ff;
  --info-soft-text: #1d4ed8;
  --info-soft-border: #bfdbfe;

  --warn-soft: #fffbeb;
  --warn-soft-text: #b45309;

  --modal-backdrop: rgba(0, 0, 0, 0.4);
  --header-from: #4338ca;
  --header-to: #4f46e5;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-modal: 0 25px 50px -12px rgba(17, 24, 39, 0.3);

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg-page: #0f172a;
  --bg-card: #1e293b;
  --bg-soft: #334155;
  --bg-input: #0f172a;
  --bg-input-hover: #1e293b;
  --bg-table-head: #1e293b;
  --bg-table-row-hover: #334155;
  --bg-chip-muted: #334155;

  --text: #e2e8f0;
  --text-heading: #f1f5f9;
  --text-muted: #aeb9c9;  /* 老眼配慮: ダーク背景でのコントラスト強化 */
  --text-muted-strong: #cbd5e1;
  --text-placeholder: #64748b;
  --text-on-primary: #ffffff;

  --border: #334155;
  --border-soft: #1e293b;
  --border-input: #475569;
  --border-input-focus: #818cf8;
  --border-input-shadow: rgba(129, 140, 248, 0.3);

  --primary: #818cf8;
  --primary-hover: #6366f1;
  --primary-active: #4f46e5;
  --primary-soft: rgba(99, 102, 241, 0.15);
  --primary-soft-text: #a5b4fc;

  --danger: #f87171;
  --danger-hover: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.15);
  --danger-soft-text: #fca5a5;

  --success-soft: rgba(34, 197, 94, 0.15);
  --success-soft-text: #86efac;
  --success-soft-border: rgba(34, 197, 94, 0.3);

  --info-soft: rgba(59, 130, 246, 0.15);
  --info-soft-text: #93c5fd;
  --info-soft-border: rgba(59, 130, 246, 0.3);

  --warn-soft: rgba(245, 158, 11, 0.15);
  --warn-soft-text: #fcd34d;

  --modal-backdrop: rgba(0, 0, 0, 0.65);
  --header-from: #312e81;
  --header-to: #4338ca;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.7);

  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-page);
  margin: 0;
  transition: background-color 200ms, color 200ms;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 150ms;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  border: none;
  line-height: 1.25rem;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: var(--text-on-primary); box-shadow: var(--shadow-md); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:active { background: var(--primary-active); }
.btn-secondary { background: var(--bg-card); color: var(--text-muted-strong); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { background: var(--bg-soft); }
.btn-ghost { background: transparent; color: var(--text-muted-strong); }
.btn-ghost:hover { color: var(--text-heading); background: var(--bg-soft); }
.btn-danger { background: var(--danger); color: var(--text-on-primary); }
.btn-danger:hover { background: var(--danger-hover); }

/* ============================================================
   Form
   ============================================================ */
/* type 無しの素 input も拾う(セレクタ漏れによるダーク崩れ=白背景を構造的に防止) */
.input, input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]):not([type="color"]), select, textarea {
  border: 1px solid var(--border-input);
  border-radius: 0.5rem;
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--bg-input);
  box-shadow: var(--shadow-sm);
  transition: all 150ms;
  font-family: inherit;
  color: var(--text);
}
.input:focus, input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--border-input-focus);
  box-shadow: 0 0 0 3px var(--border-input-shadow);
}
.input::placeholder, input::placeholder, textarea::placeholder { color: var(--text-placeholder); }

form label {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted-strong);
  font-weight: 500;
}
form label > input,
form label > select,
form label > textarea {
  width: 100%;
  display: block;
  margin-top: 0.375rem;
}
form label > textarea {
  min-height: 64px;
  resize: vertical;
}

/* form-input / form-label / required / form-hint(モーダル内のフォーム用)*/
.form-label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted-strong);
}
.form-label code {
  background: var(--bg-soft);
  color: var(--primary);
  padding: 0.05rem 0.35rem;
  border-radius: 0.25rem;
  font-size: 0.85em;
}
.required { color: var(--danger); }
.form-hint { font-size: 0.75rem; color: var(--text-muted); font-weight: 400; margin-left: 0.4rem; }

.form-input {
  width: 100%;
  border: 1px solid var(--border-input);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  background: var(--bg-input);
  color: var(--text);
}
.form-input:focus {
  outline: none;
  border-color: var(--border-input-focus);
  box-shadow: 0 0 0 3px var(--border-input-shadow);
}

/* ============================================================
   Pill button group(単一選択肢を select の代わりに表現)
   ============================================================ */
.pill-group { display: flex; flex-wrap: wrap; gap: 0.375rem; }
.pill {
  padding: 0.375rem 0.875rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--bg-soft);
  color: var(--text-muted-strong);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 120ms;
  opacity: 0.6;
}
.pill:hover { opacity: 0.9; }
.pill.pill-active {
  opacity: 1;
  background: var(--primary-soft);
  color: var(--primary-soft-text);
  border-color: var(--primary);
}

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: var(--bg-card);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-soft);
  transition: box-shadow 150ms, background-color 200ms;
}
.card:hover { box-shadow: var(--shadow-lg); }
.card.p-4 { padding: 1rem; }
.card.p-5 { padding: 1.25rem; }

/* ============================================================
   Tables
   ============================================================ */
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
table thead th {
  text-align: left;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.6rem 0.85rem;
  background: var(--bg-table-head);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table tbody td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: middle;
  white-space: nowrap;
  color: var(--text);
}
table tbody tr:hover td { background: var(--bg-table-row-hover); }
table tbody tr.clickable { cursor: pointer; }
table tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.center, th.center { text-align: center; }

/* 積立進捗 */
.sv-item { padding: 10px 0; border-bottom: 1px solid var(--bg-soft); }
.sv-item:last-child { border-bottom: 0; }
.sv-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 5px; }
.sv-bar { height: 8px; background: var(--bg-soft); border-radius: 4px; overflow: hidden; margin: 5px 0; }
.sv-fill { height: 100%; background: var(--success-soft-text); border-radius: 4px; transition: width .4s ease; }
.sv-meta { font-size: 12px; color: var(--text-muted-strong); }
.sv-note { margin-top: 3px; }

/* barChart(SVG 自前) */
.barchart { display: block; }
.barchart .bc-pos { fill: var(--success-soft-text); transition: opacity .15s; }
.barchart .bc-neg { fill: var(--danger-soft-text); transition: opacity .15s; }
.barchart rect:hover { opacity: .7; cursor: default; }
.barchart .bc-zero { stroke: var(--text-muted); stroke-width: 1; stroke-dasharray: 3 3; opacity: .5; }
.barchart .bc-x { fill: var(--text-muted); font-size: 10px; }
.bc-tooltip {
  position: fixed; z-index: 9999; pointer-events: none;
  background: var(--text-heading); color: var(--bg-page);
  padding: 7px 10px; border-radius: 6px; font-size: 12px; line-height: 1.4;
  box-shadow: 0 4px 14px rgba(0,0,0,.25); white-space: nowrap;
}

/* 列ソート(全テーブル共通) */
th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
th.sortable:hover { background: var(--bg-table-row-hover); }
th.sortable::after { content: " ↕"; opacity: .25; font-size: .8em; }
th.sortable[aria-sort="ascending"]::after { content: " ▲"; opacity: .9; font-size: .7em; }
th.sortable[aria-sort="descending"]::after { content: " ▼"; opacity: .9; font-size: .7em; }

/* 状態別の行色分け(orders / transactions 共通)
   左 border + 微妙な背景で「ぱっと見」を強化 */
table tbody tr.row-paid        td:first-child { border-left: 3px solid var(--success-soft-text); }
table tbody tr.row-outstanding td:first-child { border-left: 3px solid var(--danger-soft-text); }
table tbody tr.row-outstanding td { background: var(--danger-soft); }
table tbody tr.row-active      td:first-child { border-left: 3px solid var(--info-soft-text); }
table tbody tr.row-pending     td:first-child { border-left: 3px solid var(--warn-soft-text); }
table tbody tr.row-pending     td { background: var(--warn-soft); }
table tbody tr.row-muted       { color: var(--text-muted); }
table tbody tr.row-refund      td:first-child { border-left: 3px solid var(--danger-soft-text); }
table tbody tr.row-unverified  td:first-child { border-left: 3px dashed var(--warn-soft-text); }

/* ============================================================
   Modal
   ============================================================ */
.modal-backdrop {
  position: fixed; inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: var(--modal-backdrop);
  animation: modal-backdrop-fade 160ms ease-out;
  overflow-y: auto;
}
@keyframes modal-backdrop-fade { from { opacity: 0; } to { opacity: 1; } }
.modal-inner {
  width: 100%;
  max-height: 90vh;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 1rem;
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modal-inner-slide 180ms ease-out;
}
@keyframes modal-inner-slide {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.modal-inner.size-lg { max-width: 48rem; }
.modal-inner.size-md { max-width: 42rem; }
.modal-inner.size-sm { max-width: 32rem; }
.modal-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-shrink: 0;
}
.modal-header h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-heading);
}
.modal-close {
  background: var(--bg-soft);
  border: 0;
  color: var(--text-muted-strong);
  cursor: pointer;
  width: 32px; height: 32px;
  border-radius: 0.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 120ms;
  padding: 0;
}
.modal-close:hover { background: var(--bg-card); color: var(--text-heading); }
.modal-close .icon { vertical-align: 0; }
.modal-body {
  padding: 1.5rem;
  flex: 1 1 auto;
  overflow-y: auto;
}
.modal-body > * + * { margin-top: 1rem; }
.modal-footer {
  padding: 1rem;
  border-top: 1px solid var(--border-soft);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  flex-shrink: 0;
  background: var(--bg-card);
}
.modal-section { border-top: 1px solid var(--border-soft); padding-top: 1rem; margin-top: 1rem; }
.modal-section h4 { font-size: 0.9rem; color: var(--primary); margin: 0 0 0.6rem; }
body.modal-open { overflow: hidden; }

/* 全モーダル共通レイアウト(D-軽: 体裁を一元化、構造は各ページ維持) */
.modal-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.modal-form .col-span-2 { grid-column: 1 / -1; }
.modal-kv { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem 1rem; margin-bottom: 1rem; }
.modal-kv .muted.text-xs { margin-bottom: 2px; }
@media (max-width: 640px) {
  .modal-form, .modal-kv { grid-template-columns: 1fr; }
}

/* ============================================================
   Chips
   ============================================================ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1.2;
}
.chip .icon { vertical-align: 0; }
.icon-inline { vertical-align: -1px; margin-right: 2px; opacity: 0.6; }
/* .chip 併用時も statusChip() の単独 .chip-muted 時も 0.8rem で一貫(老眼配慮) */
.chip-muted { color: var(--text-muted); font-size: 0.8rem; }
.chip-primary { background: var(--primary-soft); color: var(--primary-soft-text); }
.chip-success { background: var(--success-soft); color: var(--success-soft-text); }
.chip-danger { background: var(--danger-soft); color: var(--danger-soft-text); }
.chip-warn, .chip-warning { background: var(--warn-soft); color: var(--warn-soft-text); }
.chip-info { background: var(--info-soft); color: var(--info-soft-text); }

/* ============================================================
   SVG Icons
   ============================================================ */
.icon {
  display: inline-block;
  vertical-align: -3px;
  flex-shrink: 0;
}

/* ============================================================
   Header / Navigation
   ============================================================ */
.app-header { background: var(--bg-card); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.app-header .row { max-width: 1536px; margin: 0 auto; padding: 1rem; display: flex; align-items: center; justify-content: space-between; }
.app-header .brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.app-header .brand:hover { opacity: 0.85; }
.app-header .brand .logo {
  width: 2rem; height: 2rem; border-radius: 0.5rem;
  background: linear-gradient(135deg, var(--header-from), var(--header-to));
  display: inline-flex; align-items: center; justify-content: center;
  color: white;
  box-shadow: var(--shadow-sm);
}
.app-header .brand .logo .icon { vertical-align: 0; }
.app-header .brand h1 { font-size: 1.125rem; font-weight: bold; color: var(--text-heading); margin: 0; }
.app-header .right { display: flex; align-items: center; gap: 0.75rem; font-size: 0.875rem; color: var(--text-muted); }

/* dark mode toggle button */
.theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted-strong);
  width: 36px; height: 36px;
  border-radius: 0.5rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 150ms;
  padding: 0;
}
.theme-toggle:hover { background: var(--bg-soft); color: var(--text-heading); }
.theme-toggle .icon { vertical-align: 0; }

/* Main nav */
.main-tabs { max-width: 1536px; margin: 0 auto; padding: 0 1rem; display: flex; gap: 0.25rem; }
.main-tabs a {
  padding: 0.625rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all 150ms;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.main-tabs a .icon { vertical-align: 0; opacity: 0.85; }
.main-tabs a:hover { color: var(--text-heading); }
.main-tabs a:hover .icon { opacity: 1; }
.main-tabs a.active { color: var(--primary); border-bottom-color: var(--primary); }
.main-tabs a.active .icon { opacity: 1; }

/* タブアイコンの色分け(KPI と同系統、視認性向上) */
.main-tabs a .icon { opacity: 1; }
.main-tabs a[data-nav="dashboard"]    .icon { color: var(--primary); }
.main-tabs a[data-nav="customers"]    .icon { color: var(--success-soft-text); }
.main-tabs a[data-nav="items"]        .icon { color: var(--info-soft-text); }
.main-tabs a[data-nav="orders"]       .icon { color: var(--warn-soft-text); }
.main-tabs a[data-nav="transactions"] .icon { color: var(--success-soft-text); }
.main-tabs a[data-nav="contract"]     .icon { color: var(--primary); }
.main-tabs a[data-nav="admin"]        .icon { color: var(--text-muted); }

/* Main content */
main.app-main { max-width: 1536px; margin: 0 auto; padding: 1.5rem 1rem; }
.page-title { font-size: 1.25rem; font-weight: bold; color: var(--text-heading); }

/* KPI cards */
.kpi-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin-bottom: 1rem; }
@media (min-width: 768px) { .kpi-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.kpi { padding: 1rem; display: flex; align-items: center; gap: 0.875rem; }
.kpi-icon {
  width: 40px; height: 40px; border-radius: 0.625rem;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.kpi-icon-primary { background: var(--primary-soft); color: var(--primary-soft-text); }
.kpi-icon-success { background: var(--success-soft); color: var(--success-soft-text); }
.kpi-icon-info { background: var(--info-soft); color: var(--info-soft-text); }
.kpi-icon-warn { background: var(--warn-soft); color: var(--warn-soft-text); }
.kpi-text { min-width: 0; flex: 1; }
.kpi-label { color: var(--text-muted); font-size: 0.8125rem; font-weight: 600; margin-bottom: 0.125rem; }
.kpi-value { font-size: 1.375rem; font-weight: bold; letter-spacing: -0.025em; color: var(--text-heading); }
.kpi-sub { font-size: 0.78rem; margin-top: 0.2rem; }
.card-title { font-size: 1.05rem; font-weight: bold; color: var(--text-heading); margin: 0 0 0.75rem; }

/* Spinner */
.spinner {
  display: inline-block;
  width: 1.25rem; height: 1.25rem;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-row { text-align: center; padding: 3rem 1rem; color: var(--text-muted); }

/* Toast */
.toast-wrap { position: fixed; right: 1rem; bottom: 1rem; display: flex; flex-direction: column; gap: 0.5rem; z-index: 1100; }
.toast { padding: 0.625rem 1rem; border-radius: 0.5rem; box-shadow: var(--shadow-lg); font-size: 0.875rem; }
.toast-success { background: var(--success-soft); color: var(--success-soft-text); border: 1px solid var(--success-soft-border); }
.toast-error { background: var(--danger-soft); color: var(--danger-soft-text); border: 1px solid var(--danger); }
.toast-info { background: var(--info-soft); color: var(--info-soft-text); border: 1px solid var(--info-soft-border); }

/* Misc utilities */
.muted { color: var(--text-muted); }
.text-xs { font-size: 0.8rem; }
.text-sm { font-size: 0.875rem; }
.text-red { color: var(--danger); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mt-3 { margin-top: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mt-2 { margin-top: 0.5rem; }
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.col-span-2 { grid-column: span 2 / span 2; }
.spacer { flex: 1; }
.err { color: var(--danger); padding: 1rem; font-size: 0.875rem; }
code {
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 0.8125rem;
  padding: 0.125rem 0.375rem;
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 0.25rem;
}

/* ============================================================
   レスポンシブ(徹底対応)
   - ナビ9項目はタブレット以下で横スクロール(折返さず指でスワイプ)
   - 2カラム系は狭幅で1カラムへ、KPI は極小で1カラム
   - ヘッダ操作列は折返し、余白/タップ領域をモバイル最適化
   - テーブルは table() が overflow-x ラップ済(横スクロール)
   ============================================================ */
@media (max-width: 900px) {
  .main-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .main-tabs::-webkit-scrollbar { display: none; }
  .main-tabs a { flex: 0 0 auto; white-space: nowrap; }
}
@media (max-width: 768px) {
  .app-header .row { padding: 0.75rem; }
  .app-header .brand h1 { font-size: 1rem; }
  main.app-main { padding: 1rem 0.75rem; }
  .page-title { font-size: 1.1rem; }
  .grid-2, .grid-3, .grid-cols-2 { grid-template-columns: 1fr; }
  /* ページ見出し + 操作ボタンの行を折返す */
  .flex.items-center.justify-between { flex-wrap: wrap; gap: 0.5rem; }
  /* タップ領域確保 */
  .btn { min-height: 40px; }
  .main-tabs a { padding-top: 0.6rem; padding-bottom: 0.6rem; }
}
@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .modal-inner.size-lg, .modal-inner.size-md, .modal-inner.size-sm { max-width: 100%; }
  .card { padding: 0.875rem; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-input); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
