/* ===== Reset ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: #f3f5f9; color: #2b2f36; font-size: 14px; }
a { color: #4c6fff; text-decoration: none; }
a:hover { text-decoration: underline; }
code, .tk { font-family: "SFMono-Regular", Consolas, Menlo, monospace; font-size: 12px; background: #eef0f5; padding: 2px 6px; border-radius: 4px; color: #4a4f5a; }
code { background: transparent; padding: 0; }

/* ===== Layout ===== */
.wrap { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #1e2230; color: #cfd2dc; padding: 20px 0; flex-shrink: 0; }
.sidebar .logo { text-align: center; font-size: 18px; font-weight: 700; padding: 0 0 24px 0; color: #fff; }
.sidebar nav { display: flex; flex-direction: column; }
.sidebar nav a { color: #cfd2dc; padding: 12px 24px; border-left: 3px solid transparent; }
.sidebar nav a:hover { background: #2b3040; text-decoration: none; }
.sidebar nav a.active { background: #2b3040; color: #fff; border-left-color: #4c6fff; }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 18px 32px; background: #fff; border-bottom: 1px solid #e5e8f0; }
.topbar h1 { font-size: 20px; }
.topbar .user { color: #5a6271; }
.content { padding: 24px 32px; flex: 1; }

/* ===== Panel ===== */
.panel { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.04); margin-bottom: 20px; }
.panel h3 { font-size: 16px; margin-bottom: 14px; }
.panel h4 { font-size: 14px; }
.bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; gap: 12px; }
.row { display: flex; gap: 20px; }
.row .panel { flex: 1; }

/* ===== Cards ===== */
.cards { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 20px; }
.card.stat { padding: 18px 20px; }
.card.stat .label { color: #5a6271; font-size: 13px; }
.card.stat .val { font-size: 28px; font-weight: 700; color: #1e2230; margin: 6px 0; }
.card.stat .sub { color: #97a0b3; font-size: 12px; }

/* ===== Table ===== */
.t { width: 100%; border-collapse: collapse; }
.t th, .t td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #eef0f5; }
.t th { background: #f8f9fc; color: #5a6271; font-weight: 500; font-size: 13px; }
.t tr:hover { background: #fafbfd; }
.t .empty { text-align: center; color: #97a0b3; padding: 30px; }

.kv th { width: 120px; text-align: right; color: #5a6271; padding: 6px 12px; font-weight: 500; }
.kv td { padding: 6px 12px; }
.kv tr { border-bottom: 1px solid #eef0f5; }

/* ===== Form ===== */
.panel form label { display: block; margin: 10px 0 6px; color: #5a6271; font-size: 13px; }
.panel form input, .panel form select, .panel form textarea { width: 100%; padding: 9px 12px; border: 1px solid #dde1ea; border-radius: 6px; font-size: 14px; outline: none; transition: border-color .15s; }
.panel form input:focus, .panel form select:focus { border-color: #4c6fff; }
.panel form label.check { display: flex; align-items: center; gap: 6px; }
.panel form label.check input { width: auto; }
.panel form .grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.panel form .grid label { display: block; }
.panel form .grid input { width: 100%; }

/* ===== Button ===== */
.btn { display: inline-block; padding: 7px 16px; background: #fff; color: #2b2f36; border: 1px solid #dde1ea; border-radius: 6px; cursor: pointer; font-size: 13px; transition: all .15s; }
.btn:hover { background: #f3f5f9; text-decoration: none; }
.btn.primary { background: #4c6fff; color: #fff; border-color: #4c6fff; }
.btn.primary:hover { background: #3a5be0; }
.btn.danger { background: #fff; color: #f04848; border-color: #f0c4c4; }
.btn.danger:hover { background: #fdf2f2; }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.btn + .btn, .btn + a.btn, a.btn + .btn { margin-left: 6px; }
.ops { white-space: nowrap; }
.ops .btn { margin-bottom: 4px; }

/* ===== Misc ===== */
.muted { color: #97a0b3; font-size: 12px; }
.ok { color: #2ea043; }
.warn { color: #d4a72c; }
.err { color: #f04848; }
.tip ul { padding-left: 20px; line-height: 1.8; }
.tip code { background: #f0f2f7; padding: 2px 6px; border-radius: 3px; }

/* ===== Login ===== */
.login-body { background: linear-gradient(135deg, #4c6fff 0%, #6a4eff 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,.15); width: 360px; }
.login-card h1 { font-size: 22px; margin-bottom: 6px; }
.login-card .sub { color: #97a0b3; font-size: 13px; margin-bottom: 24px; }
.login-card label { display: block; margin: 14px 0 6px; color: #5a6271; font-size: 13px; }
.login-card input { width: 100%; padding: 11px 12px; border: 1px solid #dde1ea; border-radius: 6px; font-size: 14px; }
.login-card input:focus { border-color: #4c6fff; outline: none; }
.login-card button { width: 100%; margin-top: 20px; padding: 12px; background: #4c6fff; color: #fff; border: none; border-radius: 6px; font-size: 15px; font-weight: 500; cursor: pointer; }
.login-card button:hover { background: #3a5be0; }
.login-card .err { color: #f04848; margin-top: 10px; min-height: 18px; font-size: 13px; }
.login-card .hint { color: #97a0b3; font-size: 12px; margin-top: 16px; text-align: center; }

@media (max-width: 980px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .row { flex-direction: column; }
  .panel form .grid { grid-template-columns: repeat(2, 1fr); }
}