:root {
  --blue: #2563eb; --blue-dark: #1d4ed8; --bg: #f4f6fa; --card: #ffffff;
  --text: #1f2937; --muted: #6b7280; --border: #e5e7eb;
  --green: #059669; --amber: #d97706; --red: #dc2626; --violet: #7c3aed;
  --radius: 10px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px; }
.boot { padding: 60px; text-align: center; color: var(--muted); }

/* 顶栏 */
.topbar { background: var(--card); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px; padding: 10px 20px; position: sticky; top: 0; z-index: 10; }
.topbar img.logo { width: 36px; height: 36px; border-radius: 8px; }
.topbar .title { font-size: 16px; font-weight: 700; }
.topbar .sub { font-size: 12px; color: var(--muted); }
.topbar .spacer { flex: 1; }
.bell { position: relative; cursor: pointer; font-size: 18px; padding: 4px 8px; }
.bell .dot { position: absolute; top: 2px; right: 4px; min-width: 16px; height: 16px; border-radius: 8px;
  background: var(--red); color: #fff; font-size: 10px; display: flex; align-items: center; justify-content: center; padding: 0 4px; }

/* 导航 */
nav.tabs { display: flex; gap: 4px; background: var(--card); border-bottom: 1px solid var(--border);
  padding: 0 20px; overflow-x: auto; }
nav.tabs a { padding: 10px 14px; text-decoration: none; color: var(--muted); font-size: 14px;
  border-bottom: 2px solid transparent; white-space: nowrap; }
nav.tabs a.active { color: var(--blue); border-bottom-color: var(--blue); font-weight: 600; }

main { max-width: 1080px; margin: 0 auto; padding: 20px; }

/* 卡片与统计 */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.stat .num { font-size: 24px; font-weight: 700; }
.stat .lbl { font-size: 12px; color: var(--muted); margin-top: 2px; }
.stat.warn { background: #fffbeb; border-color: #fcd34d; }
.stat.warn .num { color: var(--amber); }

.panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 16px; }
.panel .head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.panel .head h2 { font-size: 15px; }
.panel .body { padding: 16px; }

/* 表格 */
table.list { width: 100%; border-collapse: collapse; }
table.list th, table.list td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; }
table.list th { color: var(--muted); font-weight: 500; background: #fafbfc; }
table.list tr:hover td { background: #f8fafc; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

/* 按钮 */
button, .btn { border: 1px solid var(--border); background: var(--card); border-radius: 8px;
  padding: 7px 14px; font-size: 13px; cursor: pointer; color: var(--text); }
button:hover, .btn:hover { background: #f3f4f6; }
button.primary, .btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
button.primary:hover { background: var(--blue-dark); }
button.danger { color: var(--red); border-color: #fecaca; }
button.danger:hover { background: #fef2f2; }
button.small { padding: 4px 10px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }

/* 徽章 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; background: #eef2ff; color: var(--blue); }
.badge.consumable { background: #f3f4f6; color: var(--muted); }
.badge.asset { background: #ecfdf5; color: var(--green); }
.badge.material { background: #eff6ff; color: var(--blue); }
.badge.borrowed { background: #fff7ed; color: var(--amber); }
.badge.approving { background: #fffbeb; color: var(--amber); }
.badge.approved, .badge.closed { background: #ecfdf5; color: var(--green); }
.badge.rejected, .badge.cancelled { background: #fef2f2; color: var(--red); }
.badge.receiving { background: #f5f3ff; color: var(--violet); }
.badge.warehouse { background: #f3f4f6; color: var(--muted); }
.badge.held { background: #eff6ff; color: var(--blue); }
.badge.returned { background: #f3f4f6; color: var(--muted); }

/* 表单 */
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.field input, .field select, .field textarea { width: 100%; border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font-size: 13px; font-family: inherit; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--blue); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.form-grid .full { grid-column: 1 / -1; }

/* 弹窗 */
.modal-mask { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex;
  align-items: flex-start; justify-content: center; z-index: 50; padding: 40px 16px; overflow-y: auto; }
.modal { background: var(--card); border-radius: 12px; width: 100%; max-width: 640px; padding: 20px; }
.modal h3 { margin-bottom: 14px; font-size: 16px; }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

/* 审批时间线 */
.timeline { list-style: none; margin-top: 8px; }
.timeline li { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px dashed var(--border); font-size: 13px; }
.timeline .seq { width: 22px; height: 22px; border-radius: 50%; background: #eef2ff; color: var(--blue);
  display: flex; align-items: center; justify-content: center; font-size: 12px; flex-shrink: 0; }
.timeline li.done .seq { background: #ecfdf5; color: var(--green); }
.timeline li.rej .seq { background: #fef2f2; color: var(--red); }
.timeline .who { color: var(--muted); font-size: 12px; }

/* 登录页 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card { background: var(--card); border-radius: 16px; padding: 36px; width: 360px;
  box-shadow: 0 10px 40px rgba(0,0,0,.08); text-align: center; }
.login-card img { width: 72px; height: 72px; border-radius: 16px; }
.login-card h1 { font-size: 20px; margin: 12px 0 4px; }
.login-card .sub { color: var(--muted); font-size: 12px; margin-bottom: 20px; }
.login-card .divider { border-top: 1px solid var(--border); margin: 18px 0; position: relative; }
.login-card .divider span { position: absolute; top: -9px; left: 50%; transform: translateX(-50%);
  background: var(--card); padding: 0 10px; color: var(--muted); font-size: 12px; }
.login-card button.full { width: 100%; padding: 10px; }

.toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); background: #111827;
  color: #fff; padding: 10px 20px; border-radius: 8px; z-index: 100; font-size: 13px; }
.toast.error { background: var(--red); }

.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.toolbar input[type=search] { border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; min-width: 200px; }
.muted { color: var(--muted); font-size: 12px; }
.qr-img { width: 140px; height: 140px; }
.flex { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.mt { margin-top: 12px; }