:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --border: #e2e6ee;
  --text: #1f2430;
  --text-muted: #6b7280;
  --green: #16a34a;
  --red: #dc2626;
  --amber: #d97706;
  --gray: #6b7280;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { font-size: 16px; } /* 字體大小可調整功能的基準值：JS 會調整此處的百分比，所有已改為 rem 的 font-size 會跟著等比例縮放 */
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.hidden { display: none !important; }

/* ---- 字體大小調整（可放置於登入卡片或頂部列中，行內顯示） ---- */
.font-size-control-inline {
  display: flex; align-items: center; gap: 2px;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 3px;
}
.auth-card .font-size-control-inline { justify-content: flex-end; margin: 0 0 12px auto; width: fit-content; }
.font-size-control button {
  border: none; background: transparent; cursor: pointer; border-radius: 6px;
  padding: 4px 9px; font-weight: 700; color: var(--text); line-height: 1.4;
  font-family: inherit;
}
.font-size-control button:hover { background: #eef2ff; color: var(--primary); }
.font-size-control .js-font-decrease { font-size: 0.75rem; }
.font-size-control .js-font-reset { font-size: 0.875rem; }
.font-size-control .js-font-increase { font-size: 1rem; }

/* ---- Auth screen ---- */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.auth-card {
  background: var(--card-bg);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  width: 100%;
  max-width: 380px;
}
.auth-card h1 { font-size: 1.25rem; text-align: center; margin-bottom: 20px; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.auth-tab-btn {
  flex: 1; padding: 8px; border: 1px solid var(--border); background: #f9fafb;
  border-radius: 8px; cursor: pointer; font-size: 0.875rem;
}
.auth-tab-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-form label { font-size: 0.8125rem; color: var(--text-muted); display: flex; flex-direction: column; gap: 6px; }
.auth-form input {
  padding: 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 0.875rem;
}
.hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 8px; }
.error-msg { color: var(--red); font-size: 0.8125rem; margin-top: 10px; }
.warning-msg { color: var(--red); font-weight: 600; background: #fee2e2; padding: 8px 12px; border-radius: 8px; white-space: pre-line; }

/* ---- App shell ---- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 24px; background: var(--card-bg); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
  flex-wrap: wrap; row-gap: 8px;
}
.topbar-title { font-weight: 600; font-size: 1rem; white-space: nowrap; }
.topbar-user { display: flex; align-items: center; gap: 10px; font-size: 0.875rem; flex-wrap: wrap; }
.role-badge {
  font-size: 0.6875rem; padding: 2px 8px; border-radius: 999px; background: #eef2ff; color: var(--primary);
  white-space: nowrap;
}
.topbar-user span { white-space: nowrap; }
.tabbar {
  display: flex; gap: 4px; padding: 8px 24px; background: var(--card-bg);
  border-bottom: 1px solid var(--border); overflow-x: auto;
}
.tab-btn {
  padding: 8px 14px; border: none; background: transparent; border-radius: 8px;
  cursor: pointer; font-size: 0.875rem; color: var(--text-muted); white-space: nowrap;
}
.tab-btn.active { background: var(--primary); color: #fff; }
.returns-filter-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.content { padding: 24px; max-width: 1000px; margin: 0 auto; }

/* ---- Buttons ---- */
.btn {
  padding: 8px 16px; border-radius: 8px; border: 1px solid transparent;
  cursor: pointer; font-size: 0.875rem; font-weight: 500; white-space: nowrap; flex-shrink: 0;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #eef2ff; color: var(--primary); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-danger { background: #fee2e2; color: var(--red); }
.btn-success { background: #dcfce7; color: var(--green); }
.btn-sm { padding: 5px 10px; font-size: 0.75rem; }

/* ---- Panels ---- */
.panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }
.panel-header h2 { margin: 0; font-size: 1.125rem; }
.filter-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filter-row input, .filter-row select, #my-res-filter { padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.8125rem; }

/* ---- Cards ---- */
.card-list { display: flex; flex-direction: column; gap: 12px; }
.item-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 12px;
}
.item-card .info { flex: 1; min-width: 200px; }
.item-card .info h4 { margin: 0 0 6px; font-size: 0.9375rem; }
.item-card .info p { margin: 2px 0; font-size: 0.8125rem; color: var(--text-muted); }
.item-card .actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.status-pill { font-size: 0.6875rem; padding: 3px 10px; border-radius: 999px; font-weight: 600; }
.status-pending { background: #fef3c7; color: var(--amber); }
.status-approved { background: #dcfce7; color: var(--green); }
.status-rejected { background: #fee2e2; color: var(--red); }
.status-cancelled { background: #f1f5f9; color: var(--gray); }
.status-available { background: #dcfce7; color: var(--green); }
.status-servicing { background: #dbeafe; color: var(--primary); }
.status-maintenance { background: #fef3c7; color: var(--amber); }
.status-retired { background: #f1f5f9; color: var(--gray); }
.empty-msg { color: var(--text-muted); font-size: 0.875rem; padding: 20px; text-align: center; }

/* ---- Forms ---- */
.form-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  background: var(--card-bg); padding: 20px; border-radius: var(--radius); border: 1px solid var(--border);
}
.form-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 0.8125rem; color: var(--text-muted); }
.form-grid input, .form-grid select, .form-grid textarea {
  padding: 9px; border: 1px solid var(--border); border-radius: 8px; font-size: 0.875rem; font-family: inherit;
}
.full-width { grid-column: 1 / -1; }
.form-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 10px; }

/* ---- Modal ---- */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 4px; }
.modal-header h3 { margin: 0; }
.modal-close-x {
  flex-shrink: 0; width: 28px; height: 28px; border: none; background: transparent; cursor: pointer;
  border-radius: 6px; font-size: 1rem; line-height: 1; color: var(--text-muted);
  display: flex; align-items: center; justify-content: center;
}
.modal-close-x:hover { background: #f3f4f6; color: var(--text); }
.notice-list { display: flex; flex-direction: column; gap: 10px; margin: 10px 0; }
.notice-item { background: #fffbeb; border: 1px solid #fde68a; border-radius: 8px; padding: 12px 14px; font-size: 0.875rem; line-height: 1.6; white-space: pre-line; }
.checkbox-list {
  display: flex; flex-direction: column; gap: 6px; max-height: 220px; overflow-y: auto;
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-top: 6px;
}
.checkbox-list label { flex-direction: row !important; align-items: center; gap: 8px; font-size: 0.8125rem; }
.checkbox-list input[type="checkbox"] { width: auto; }
.modal-box { background: #fff; padding: 24px; border-radius: var(--radius); width: 100%; max-width: 340px; }
.modal-box-lg { max-width: 480px; max-height: 85vh; overflow-y: auto; }
.modal-box form { display: flex; flex-direction: column; gap: 12px; }
.modal-box label { font-size: 0.8125rem; color: var(--text-muted); display: flex; flex-direction: column; gap: 6px; }
.modal-box input, .modal-box select, .modal-box textarea { padding: 9px; border: 1px solid var(--border); border-radius: 8px; font-family: inherit; font-size: 0.875rem; }

.block-label { display: flex; flex-direction: column; gap: 6px; font-size: 0.8125rem; color: var(--text-muted); margin-bottom: 12px; max-width: 320px; }
.block-label select { padding: 9px; border: 1px solid var(--border); border-radius: 8px; font-size: 0.875rem; }
.time-select-row { display: inline-flex; align-items: center; gap: 6px; font-size: 0.8125rem; }
.time-select-row select { padding: 8px; border: 1px solid var(--border); border-radius: 8px; }

/* ---- Reports ---- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-box { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat-box .num { font-size: 1.625rem; font-weight: 700; color: var(--primary); }
.report-num-link {
  font: inherit; font-size: 1.625rem; font-weight: 700; color: var(--primary);
  background: none; border: none; padding: 0; cursor: pointer; text-decoration: underline;
  text-underline-offset: 3px;
}
.report-num-link:hover { color: var(--primary-dark); }
table.report-table .report-num-link { font-size: 0.875rem; font-weight: 600; }
.stat-box .lbl { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }
.stat-box-clickable { cursor: pointer; transition: box-shadow 0.15s, transform 0.1s; }
.stat-box-clickable:hover { box-shadow: 0 2px 10px rgba(0,0,0,0.1); transform: translateY(-1px); }
table.report-table { width: 100%; border-collapse: collapse; background: var(--card-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); margin-bottom: 20px; }
table.report-table th, table.report-table td {
  padding: 10px 14px; text-align: right; font-size: 0.8125rem; border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
/* 每張報表表格的第一欄都是文字說明（單位／車輛／姓名／月份），靠左對齊；
   其餘欄位一律是數字或時數，統一靠右對齊，讓同一張表格內的數字上下對齊、方便閱讀比對。
   .text-col 用於表格中除了第一欄以外，內容仍是文字（例如帳號、車牌、單位名稱）的欄位，同樣靠左對齊。 */
table.report-table th:first-child, table.report-table td:first-child { text-align: left; }
table.report-table th.text-col, table.report-table td.text-col { text-align: left; }
table.report-table th { background: #f9fafb; color: var(--text-muted); font-weight: 600; white-space: nowrap; }
table.report-table tr:last-child td { border-bottom: none; }

/* ---- Calendar (month view) ---- */
.calendar-nav {
  display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap;
}
.calendar-month-label { font-weight: 600; font-size: 0.9375rem; min-width: 100px; text-align: center; }
.calendar-legend { display: flex; gap: 16px; font-size: 0.75rem; color: var(--text-muted); margin-bottom: 10px; }
.calendar-legend .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 5px; }
.dot-pending { background: var(--amber); }
.dot-approved { background: var(--green); }
.dot-maintenance { background: var(--gray); }
.dot-returned { background: #3b82f6; }
.dot-returned-pill { background: #dbeafe; color: #3b82f6; }
.legend-grey { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 5px; background: #d1d5db; }
.overdue-count-nonzero { color: var(--red); }
.clickable-card { cursor: pointer; transition: box-shadow 0.15s; }
.clickable-card:hover { box-shadow: 0 2px 10px rgba(0,0,0,0.08); }

.calendar-grid {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px;
}
.calendar-weekday {
  text-align: center; font-size: 0.75rem; color: var(--text-muted); font-weight: 600; padding: 4px 0;
}
.calendar-day {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px;
  min-height: 72px; padding: 6px; cursor: pointer; display: flex; flex-direction: column; gap: 4px;
}
.calendar-day:hover { border-color: var(--primary); }
.calendar-day.empty { background: transparent; border: none; cursor: default; }
.calendar-day.today { border-color: var(--primary); border-width: 2px; }
.calendar-day .day-num { font-size: 0.75rem; color: var(--text-muted); }
.calendar-day.today .day-num { color: var(--primary); font-weight: 700; }
.calendar-day .day-dots { display: flex; gap: 3px; flex-wrap: wrap; }
.calendar-day .day-dots .dot { width: 7px; height: 7px; border-radius: 50%; }
.calendar-day .day-more { font-size: 0.6875rem; color: var(--text-muted); }
.calendar-day.disabled { background: #f1f3f7; color: #c3c8d1; cursor: not-allowed; }
.calendar-day.disabled .day-num { color: #c3c8d1; }
.calendar-day .day-time { font-size: 0.625rem; line-height: 1.5; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding: 1px 3px; border-radius: 3px; margin-bottom: 1px; color: #fff; }
.calendar-day .day-time.pending-item { border: 2px solid #000; box-sizing: border-box; }
.calendar-day .day-time.returned-item { text-decoration: line-through; opacity: 0.75; }
.calendar-day .day-time.overdue-item { animation: blink-overdue 1s step-start infinite; }
@keyframes blink-overdue { 50% { opacity: 0.25; } }
.calendar-day .day-glyph { display: inline-flex; align-items: center; justify-content: center; width: 100%; font-size: 0.6875rem; font-weight: 700; color: #fff; background: var(--red); border-radius: 3px; padding: 1px 3px; margin-bottom: 1px; }
.calendar-day.selectable-day { border-color: var(--primary); }
.calendar-day.selected-day { background: #eef2ff; border-color: var(--primary); border-width: 2px; }

.vehicle-color-legend { display: flex; flex-wrap: wrap; gap: 10px 16px; font-size: 0.75rem; color: var(--text-muted); margin-bottom: 10px; }
.vehicle-legend-item { display: inline-flex; align-items: center; }
.vehicle-color-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 5px; }
.legend-pending-box { display: inline-block; width: 14px; height: 10px; border: 2px solid #000; border-radius: 3px; margin-right: 5px; vertical-align: middle; }
.legend-glyph { display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; font-size: 0.625rem; font-weight: 700; color: #fff; background: var(--red); border-radius: 3px; margin-right: 5px; vertical-align: middle; }

@media (max-width: 640px) {
  .calendar-day { min-height: 50px; padding: 4px; }
  .calendar-weekday { font-size: 0.625rem; }
}

/* ---- Maintenance badge ---- */
.maintenance-warning {
  display: inline-flex; align-items: center; gap: 4px; font-size: 0.6875rem; font-weight: 600;
  background: #fee2e2; color: var(--red); padding: 3px 10px; border-radius: 999px; margin-left: 6px;
}
.maintenance-soon {
  display: inline-flex; align-items: center; gap: 4px; font-size: 0.6875rem; font-weight: 600;
  background: #fef3c7; color: var(--amber); padding: 3px 10px; border-radius: 999px; margin-left: 6px;
}

/* ---- Dashboard ---- */
.dashboard-section { margin-bottom: 26px; }
.dashboard-section h3 { font-size: 0.9375rem; margin: 0 0 10px; display: flex; align-items: center; gap: 8px; }
.dashboard-count-badge { font-size: 0.75rem; background: var(--primary); color: #fff; border-radius: 999px; padding: 1px 9px; }

/* ---- Toast ---- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #1f2430; color: #fff; padding: 10px 20px; border-radius: 8px; font-size: 0.8125rem; z-index: 200;
}
.toast.error { background: var(--red); }
.toast.success { background: var(--green); }

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
  .content { padding: 14px; }
  .topbar { padding: 8px 12px; row-gap: 4px; }
  .tabbar { padding: 8px 14px; }

  /* 手機版頂端列：使用者姓名／角色徽章／字體大小按鈕原本各自帶邊框與內距，
     在窄螢幕上換行堆疊後會佔用兩三行的高度。這裡整體縮小字級與間距，
     並隱藏次要資訊（角色徽章、應用程式標題文字），讓頂端列維持精簡的單一行高度。 */
  .topbar-title { font-size: 0; }
  .topbar-title::before { content: '🚗'; font-size: 1.125rem; }
  .topbar-user { gap: 6px; font-size: 0.75rem; }
  .role-badge { display: none; }
  .font-size-control-inline { padding: 1px; gap: 0; }
  .font-size-control button { padding: 3px 6px; }
  .font-size-control .js-font-decrease { font-size: 0.6875rem; }
  .font-size-control .js-font-reset { font-size: 0.75rem; }
  .font-size-control .js-font-increase { font-size: 0.8125rem; }
  .topbar-user .btn { padding: 5px 8px; font-size: 0.75rem; }
  #user-name-badge { font-size: 0.75rem; max-width: 84px; overflow: hidden; text-overflow: ellipsis; }
}


/* 司機 Email 通知開關 */
.form-grid label.checkbox-label { flex-direction: row; align-items: center; gap: 8px; cursor: pointer; }
.form-grid label.checkbox-label input[type="checkbox"] { width: auto; margin: 0; }