:root {
  --bg: #eef3f7;
  --surface: #ffffff;
  --surface-alt: #f4f8fb;
  --border: #d7e3ec;
  --text: #2c3e4a;
  --text-muted: #6b8296;
  --primary: #6f97b3;
  --primary-dark: #4f7791;
  --primary-light: #dce9f1;
  --success: #7fb69e;
  --success-light: #e5f3ee;
  --danger: #c9807f;
  --danger-light: #fbeceb;
  --warning: #d9ab6e;
  --warning-light: #fbf1e3;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(79, 119, 145, 0.08);
}

* { box-sizing: border-box; }

@font-face {
  font-family: "GenSenMaruGothicTW";
  src: url("/fonts/GenSenMaruGothicTW-Bold.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}

body {
  margin: 0;
  font-family: "GenSenMaruGothicTW", "源泉圓體", -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", sans-serif;
  font-weight: 700;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding-bottom: 90px;
}

a { color: var(--primary-dark); }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  transition: background 0.15s;
}
button:hover { background: var(--primary-dark); }
button.secondary { background: var(--surface-alt); color: var(--text); border: 1px solid var(--border); }
button.secondary:hover { background: var(--primary-light); }
button.ghost { background: transparent; color: var(--text-muted); padding: 6px 10px; }
button.ghost:hover { background: var(--surface-alt); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

input, select {
  font-family: inherit;
  font-size: 15px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  width: 100%;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
input[type="number"] { text-align: center; font-size: 16px; }

/* ---------- Top bar ---------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: var(--shadow);
}
.topbar-row1 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--text);
}
.brand i { color: var(--primary); font-size: 18px; }
.brand small { display: block; font-size: 11px; color: var(--text-muted); font-weight: 400; }
.topbar-actions { display: flex; gap: 6px; }
.icon-btn {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-alt);
  color: var(--text-muted);
  border-radius: 10px;
  padding: 0;
}
.icon-btn:hover { background: var(--primary-light); color: var(--primary-dark); }

.settings-wrap { position: relative; }
.settings-panel {
  display: none;
  position: absolute;
  top: 46px;
  right: 0;
  width: 220px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  z-index: 40;
}
.settings-panel.open { display: block; }
.settings-panel-title {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 700;
  margin: 10px 0 8px;
}
.settings-divider { border-top: 1px solid var(--border); margin-top: 10px; }
.settings-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  padding: 4px 0;
  cursor: pointer;
}
.settings-check input { width: auto; }

.stocktake-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.stocktake-meta .meta-label { display: flex; align-items: center; gap: 4px; white-space: nowrap; }
.stocktake-meta .meta-sep { color: var(--text-muted); }
.stocktake-meta select { width: auto; padding: 6px 8px; font-size: 13px; }
.stocktake-meta input[type="date"] {
  width: auto;
  padding: 5px 8px;
  font-size: 13px;
  color: var(--text);
}

.action-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}
.filter-chips {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  margin-top: 10px;
  padding-bottom: 2px;
}
.chip {
  flex-shrink: 0;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.mode-toggle {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  background: var(--surface-alt);
  border-radius: 10px;
  padding: 4px;
}
.mode-btn {
  flex: 1;
  background: transparent;
  color: var(--text-muted);
  padding: 8px 10px;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.mode-btn:hover { background: transparent; color: var(--text); }
.mode-btn.active { background: var(--surface); color: var(--primary-dark); box-shadow: var(--shadow); }

.status-badge {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}
.status-badge.ok { background: var(--success-light); color: #3f7a63; }
.status-badge.low { background: var(--warning-light); color: #a1712f; }
.status-badge.reorder { background: var(--danger-light); color: var(--danger); }

/* ---------- Bottom bar ---------- */
.bottombar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
  box-shadow: 0 -2px 10px rgba(79, 119, 145, 0.1);
  z-index: 20;
}
.bottombar button { display: flex; align-items: center; gap: 6px; }

.empty-hint {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 400;
  padding: 30px 10px;
}

.preview-badge {
  position: fixed;
  top: 8px; right: 8px;
  background: var(--warning);
  color: #fff;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  z-index: 30;
  box-shadow: var(--shadow);
}

/* ---------- Import modal ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(44, 62, 74, 0.45);
  z-index: 50;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 18px;
}
.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.modal-head h3 { margin: 0; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.modal-hint {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
  line-height: 1.6;
  margin: 0 0 12px;
}
.modal textarea {
  width: 100%;
  min-height: 160px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  resize: vertical;
  white-space: pre;
  overflow-x: auto;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}
.form-grid label.hidden { display: none; }
.form-grid input.center-text { text-align: center; }
.modal input::placeholder { color: #b6c4cd; }
.import-result {
  margin-top: 12px;
  font-size: 13px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--surface-alt);
  display: none;
}
.import-result.show { display: block; }
.import-result.error { background: var(--danger-light); color: var(--danger); }

/* ---------- Spreadsheet-style grid ---------- */
.grid-wrap {
  margin: 12px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: auto;
  max-height: calc(100vh - 260px);
}

table.grid {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  font-size: 13px;
}

table.grid thead th {
  position: sticky;
  top: 0;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  padding: 10px 6px;
  text-align: center;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
  z-index: 5;
}
table.grid thead th.col-code {
  left: 0;
  z-index: 6;
  min-width: 76px;
  max-width: 76px;
}
table.grid thead th.col-name {
  left: 76px;
  z-index: 6;
  text-align: left;
  padding-left: 12px;
}

table.grid td {
  padding: 3px;
  border-bottom: 1px solid var(--border);
  text-align: center;
  white-space: nowrap;
}
table.grid tbody tr:nth-child(even) { background: var(--surface-alt); }
table.grid tbody tr.row-reorder,
table.grid tbody tr.row-diff { background: var(--danger-light); }
table.grid tbody tr.row-low { background: var(--warning-light); }

td.col-code, td.col-name {
  position: sticky;
  background-color: var(--surface);
  z-index: 3;
}
td.col-code {
  left: 0;
  min-width: 76px;
  max-width: 76px;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 12px;
  color: var(--text-muted);
  border-right: 1px solid var(--border);
}
td.col-name {
  left: 76px;
  text-align: left;
  padding: 6px 12px;
  min-width: 150px;
  max-width: 150px;
  white-space: normal;
  border-right: 1px solid var(--border);
}
tr:nth-child(even) td.col-code, tr:nth-child(even) td.col-name { background-color: var(--surface-alt); }
tr.row-reorder td.col-code, tr.row-reorder td.col-name,
tr.row-diff td.col-code, tr.row-diff td.col-name { background-color: var(--danger-light); }
tr.row-low td.col-code, tr.row-low td.col-name { background-color: var(--warning-light); }

td.col-name .name { font-size: 13px; color: var(--text); line-height: 1.3; }

.grid input[type="number"] {
  width: 66px;
  padding: 8px 4px;
  border-radius: 6px;
  font-size: 14px;
  text-align: center;
  /* 不要顯示數字輸入框的上下小箭頭，用鍵盤上下鍵切換儲存格就好 */
  -moz-appearance: textfield;
}
.grid input[type="number"]::-webkit-outer-spin-button,
.grid input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.grid input[type="number"]:focus {
  background: var(--primary-light);
}
.grid input[type="text"] {
  width: 88px;
  padding: 8px 6px;
  border-radius: 6px;
  font-size: 13px;
  text-align: center;
}
.grid input[type="text"]:focus {
  background: var(--primary-light);
}
.grid td.calc-cell {
  font-size: 13px;
  color: var(--text-muted);
  min-width: 74px;
}
.grid td.calc-cell.value-set { color: var(--text); font-weight: 700; }
.grid td.calc-cell.diff-plus { color: var(--success); font-weight: 700; }
.grid td.calc-cell.diff-minus { color: var(--danger); font-weight: 700; }

.grid td.col-status { min-width: 80px; }

/* ---------- 精簡間距（欄位設定裡開關） ---------- */
.grid-wrap.compact table.grid thead th { padding: 6px 4px; font-size: 11px; }
.grid-wrap.compact table.grid td { padding: 1px; }
.grid-wrap.compact td.col-name { padding: 3px 8px; }
.grid-wrap.compact .grid input[type="number"],
.grid-wrap.compact .grid input[type="text"] { padding: 4px 2px; font-size: 12px; width: 52px; }
.grid-wrap.compact .grid td.calc-cell { font-size: 12px; min-width: 56px; }
.grid-wrap.compact td.col-name .name { font-size: 12px; }