:root {
  --primary: #2563eb;
  --secondary: #0ea5e9;
  --success: #16a34a;
  --warning: #f59e0b;
  --error: #dc2626;
  --bg: #f1f5f9;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}
.loading { padding: 40px; text-align: center; color: var(--muted); }
a { color: var(--primary); text-decoration: none; }

/* layout */
.appbar {
  height: 56px; background: var(--primary); color: #fff; display: flex;
  align-items: center; padding: 0 16px; position: fixed; top: 0; left: 0; right: 0;
  z-index: 10; gap: 12px;
}
.appbar .title { font-weight: 700; flex: 1; }
.appbar .user { display: flex; align-items: center; gap: 8px; }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; background: rgba(255,255,255,.25);
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.drawer {
  width: 220px; background: #fff; border-right: 1px solid var(--border);
  position: fixed; top: 56px; bottom: 0; left: 0; padding: 8px 0; overflow: auto;
}
.drawer a {
  display: flex; align-items: center; gap: 10px; padding: 11px 18px; color: var(--text);
  font-size: 14px;
}
.drawer a:hover { background: #f8fafc; }
.drawer a.active { background: #eff6ff; color: var(--primary); font-weight: 600; border-right: 3px solid var(--primary); }
.main { margin-left: 220px; margin-top: 56px; padding: 20px; }
.content { max-width: 1100px; }

/* cards */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; margin-bottom: 14px;
}
.card .row { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.grid { display: grid; gap: 14px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) {
  .drawer { width: 0; }
  .main { margin-left: 0; }
  .grid.cols-4, .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
}

/* typography */
h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 18px 0 10px; }
.muted { color: var(--muted); font-size: 13px; }
.stat { font-size: 30px; font-weight: 800; }
.stat.primary { color: var(--primary); }
.stat.success { color: var(--success); }
.stat.secondary { color: var(--secondary); }
.stat.warning { color: var(--warning); }

/* buttons */
button {
  font: inherit; cursor: pointer; border: none; border-radius: 8px; padding: 8px 14px;
  background: var(--primary); color: #fff; font-weight: 600;
}
button:hover { filter: brightness(1.05); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.ghost { background: #fff; color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--error); }
button.warn { background: var(--warning); }
button.small { padding: 4px 10px; font-size: 13px; }

/* chips */
.chip {
  display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px;
  font-weight: 600; background: #e2e8f0; color: #334155;
}
.chip.success { background: #dcfce7; color: #166534; }
.chip.primary { background: #dbeafe; color: #1e40af; }
.chip.warning { background: #fef3c7; color: #92400e; }
.chip.error { background: #fee2e2; color: #991b1b; }
.chip.info { background: #e0f2fe; color: #075985; }
.chip.secondary { background: #ede9fe; color: #5b21b6; }
.chip.default { background: #e2e8f0; color: #475569; }

/* forms */
input, select, textarea {
  font: inherit; width: 100%; padding: 9px 11px; border: 1px solid var(--border);
  border-radius: 8px; background: #fff; color: var(--text); margin: 6px 0;
}
label { font-size: 13px; color: var(--muted); }
.field { margin-bottom: 8px; }

/* dialog */
.mask {
  position: fixed; inset: 0; background: rgba(15,23,42,.45); display: flex;
  align-items: center; justify-content: center; z-index: 50; padding: 16px;
}
.dialog { background: #fff; border-radius: 14px; padding: 20px; width: 440px; max-width: 100%; max-height: 90vh; overflow: auto; }
.dialog h3 { margin: 0 0 12px; }
.dialog .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

/* table */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }

/* alert */
.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; font-size: 14px; }
.alert.error { background: #fee2e2; color: #991b1b; }
.alert.success { background: #dcfce7; color: #166534; }

/* login */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1e3a8a, #0ea5e9);
}
.login-card { background: #fff; border-radius: 16px; padding: 32px; width: 360px; max-width: 92vw; }
.login-card h2 { margin: 0 0 4px; font-size: 20px; }
.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; gap: 10px; flex-wrap: wrap; }
.flex { display: flex; } .gap-1 { gap: 8px; } .items-center { align-items: center; }
.mt-2 { margin-top: 12px; }