:root {
  --primary: #4f46e5;
  --primary-light: #6366f1;
  --primary-soft: #eef2ff;
  --accent: #a855f7;
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --ok: #10b981;
  --warn: #f59e0b;
  --err: #ef4444;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 30px rgba(79,70,229,.12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.hidden { display: none !important; }

/* ===== 登录页 ===== */
.login-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #4f46e5 0%, #a855f7 100%);
}
.login-card {
  width: 380px; background: #fff; border-radius: 16px; padding: 40px 36px;
  box-shadow: var(--shadow-lg); text-align: center;
}
.logo-mark {
  width: 56px; height: 56px; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-weight: 700; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 14px; letter-spacing: 1px;
}
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card .sub { margin: 0 0 24px; color: var(--text-muted); font-size: 12px; }
.form input {
  width: 100%; padding: 10px 12px; margin-bottom: 12px;
  border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}
.form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.btn {
  padding: 9px 16px; border: none; border-radius: 8px; cursor: pointer;
  font-size: 14px; font-weight: 500; transition: all .15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--primary-soft); color: var(--primary); }
.btn-block { width: 100%; }
.btn-danger { background: var(--err); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.err { color: var(--err); font-size: 12px; min-height: 18px; margin: 4px 0 0; }

/* ===== 主界面 ===== */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px; background: #fff; border-right: 1px solid var(--border);
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.brand {
  padding: 20px 22px; font-weight: 700; font-size: 15px;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
}
.brand .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.nav { flex: 1; padding: 12px 10px; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  padding: 9px 14px; border-radius: 8px; color: var(--text-muted);
  text-decoration: none; cursor: pointer; font-size: 14px;
}
.nav-item:hover { background: var(--primary-soft); color: var(--primary); }
.nav-item.active { background: var(--primary); color: #fff; }
.sidebar-foot { padding: 14px; border-top: 1px solid var(--border); }

.content { flex: 1; padding: 28px 32px; max-width: 1200px; }
.view { display: none; }
.view.active { display: block; }
.view-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.view-head h2 { margin: 0; font-size: 20px; }

.panel {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; margin-bottom: 18px;
}
.panel h3 { margin: 0 0 14px; font-size: 15px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.grid2 label, label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text-muted); }
.grid2 input, .grid2 select, label input, label select, label textarea {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px;
}
.row-right { display: flex; justify-content: flex-end; align-items: center; gap: 10px; }
.muted { color: var(--text-muted); font-size: 12px; }

.table-wrap {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  overflow: auto; box-shadow: var(--shadow);
}
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); }
.table th { background: #f8fafc; font-weight: 600; color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: #fafbff; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 500;
}
.badge-ok { background: #d1fae5; color: #065f46; }
.badge-warn { background: #fef3c7; color: #92400e; }
.badge-err { background: #fee2e2; color: #991b1b; }
.badge-info { background: var(--primary-soft); color: var(--primary); }

.editor {
  width: 100%; min-height: 420px; margin-top: 14px;
  font-family: "JetBrains Mono", "Consolas", monospace; font-size: 13px;
  border: 1px solid var(--border); border-radius: 8px; padding: 14px;
  background: #fafbff; resize: vertical; line-height: 1.6;
}

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px; }
.stat-card {
  background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 16px;
  box-shadow: var(--shadow);
}
.stat-card .label { font-size: 12px; color: var(--text-muted); }
.stat-card .value { font-size: 24px; font-weight: 700; margin-top: 6px; }
.stat-card .value.primary { color: var(--primary); }
.stat-card .value.accent { color: var(--accent); }
.stat-card .value.ok { color: var(--ok); }

.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 9999;
  background: #1e293b; color: #fff; padding: 12px 18px; border-radius: 8px;
  box-shadow: var(--shadow-lg); font-size: 13px; animation: slidein .2s ease;
}
.toast.err { background: var(--err); }
.toast.ok { background: var(--ok); }
@keyframes slidein { from { transform: translateY(20px); opacity: 0; } to { transform: none; opacity: 1; } }