:root {
  --ink: #1c1c1e;
  --mute: #8e8e93;
  --line: #d1d1d6;          /* 表格框線統一用這一種粗細/顏色 */
  --bg: #f2f2f7;
  --card: #ffffff;
  --brand: #2563eb;
  --brand-d: #1d4ed8;
  --green: #16a34a;
  --red: #dc2626;
  --radius: 12px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Microsoft JhengHei", "PingFang TC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
}
.hidden { display: none !important; }
.muted { color: var(--mute); }
.err { color: var(--red); min-height: 20px; margin: 6px 0 0; }
.msg { color: var(--green); margin-left: 10px; font-size: 13px; }

/* 登入 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-card {
  background: var(--card); padding: 32px; border-radius: 16px; width: 340px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.08); text-align: center;
}
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card input {
  width: 100%; margin: 18px 0 12px; padding: 12px; font-size: 16px;
  border: 1px solid var(--line); border-radius: 10px;
}
.login-card button {
  width: 100%; padding: 12px; font-size: 16px; border: none; border-radius: 10px;
  background: var(--brand); color: #fff; cursor: pointer;
}

/* 頂欄 */
.topbar {
  background: var(--card); display: flex; align-items: center; gap: 20px;
  padding: 12px 20px; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 800; font-size: 17px; }
.tabs { display: flex; gap: 6px; flex: 1; }
.tab {
  border: none; background: transparent; padding: 8px 16px; font-size: 15px;
  border-radius: 8px; cursor: pointer; color: var(--mute); font-weight: 600;
}
.tab.active { background: #eef2ff; color: var(--brand); }

/* 卡片 / 表單 */
.tab-panel { max-width: 1080px; margin: 20px auto; padding: 0 16px; display: flex; flex-direction: column; gap: 16px; }
.card { background: var(--card); border-radius: var(--radius); padding: 18px 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.card h2 { margin: 0 0 14px; font-size: 16px; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 16px; }
.grid label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--mute); font-weight: 600; }
.grid .span2 { grid-column: span 2; }
.grid input, .grid select {
  padding: 9px 10px; font-size: 15px; border: 1px solid var(--line);
  border-radius: 8px; color: var(--ink); background: #fff;
}
.total-box {
  align-self: end; display: flex; justify-content: space-between; align-items: center;
  background: #eef2ff; border-radius: 8px; padding: 12px 14px; font-size: 13px; color: var(--brand-d); font-weight: 700;
}
.total-box strong { font-size: 20px; }
.actions { display: flex; align-items: center; margin-top: 16px; gap: 8px; }
button {
  padding: 9px 18px; font-size: 15px; border: none; border-radius: 8px;
  background: var(--brand); color: #fff; cursor: pointer; font-weight: 600;
}
button:hover { background: var(--brand-d); }
button.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
button.ghost:hover { background: #f7f7fa; }
button.danger { background: #fff; color: var(--red); border: 1px solid var(--line); padding: 5px 10px; font-size: 13px; }
button.mini { padding: 5px 10px; font-size: 13px; background: #fff; color: var(--brand); border: 1px solid var(--line); }

/* 清單 */
.list-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; gap: 12px; flex-wrap: wrap; }
.list-head h2 { margin: 0; }
.search { padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; min-width: 200px; }
.report-controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.report-controls input { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; }

/* 表格：框線一律同一種粗細（用戶偏好），不做外框粗內線細 */
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }
thead th { background: #f7f7fa; font-weight: 700; white-space: nowrap; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: #fafafc; }
.detail-row td { background: #f7f7fa; padding: 0; }
.detail-inner { padding: 8px 12px; }
.detail-inner table { margin: 0; }

.grand {
  display: flex; justify-content: space-between; align-items: center;
  background: #eef2ff; border-radius: 10px; padding: 14px 18px; margin-bottom: 14px;
  font-weight: 700; color: var(--brand-d);
}
.grand strong { font-size: 24px; }

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .grid .span2 { grid-column: span 1; }
  .tabs { order: 3; width: 100%; }
}