:root {
  --bg: #f6f8fc;
  --panel: #ffffff;
  --panel-2: #f8fbff;
  --text: #162033;
  --muted: #5f6f86;
  --line: #dde6f1;
  --accent: #2463eb;
  --accent-soft: #edf3ff;
  --success: #15803d;
  --error: #b91c1c;
  --warning: #b45309;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}
.sidebar{position:fixed;inset:0 auto 0 0;width:250px;padding:24px 18px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;justify-content:space-between}
.brand{font-size:24px;font-weight:700;color:var(--accent);line-height:1.1}
nav{display:grid;gap:8px;margin-top:24px}
nav a{padding:12px 14px;border-radius:14px;color:var(--muted);font-weight:600}
nav a:hover,nav a.active{background:var(--accent-soft);color:var(--accent)}
.main{margin-left:250px;padding:28px}.login-main{margin-left:0;display:grid;place-items:center;min-height:100vh}
.card,.login-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;box-shadow:0 10px 30px rgba(15,23,42,.05)}
.card{padding:22px}.login-card{width:min(420px,92vw);padding:30px}
.page-header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}
h1,h2,h3,p{margin:0}h1{font-size:30px}h2{font-size:20px}h3{font-size:16px}.muted{color:var(--muted)}.small{font-size:12px}
.stats-grid,.grid.two-col,.actions-grid,.kv-grid,.stack-grid{display:grid;gap:16px}.stats-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:16px}.stats-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.grid.two-col{grid-template-columns:1.2fr .8fr;margin-bottom:16px}.single-col{grid-template-columns:1fr}.kv-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stack-grid{grid-template-columns:1fr}
.stat-card strong{display:block;margin-top:8px;font-size:28px}.label{color:var(--muted);font-size:13px;font-weight:600}.card-title-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.badge{display:inline-flex;padding:7px 11px;border-radius:999px;font-size:12px;font-weight:700;background:#e8eef7;color:#334155}.badge.success{background:#dcfce7;color:#166534}.badge.error{background:#fee2e2;color:#991b1b}.badge.warning{background:#ffedd5;color:#9a3412}
label{display:grid;gap:8px;font-size:14px;color:var(--muted)}input,select{width:100%;background:#fff;color:var(--text);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
button,.ghost,.subtle-btn{border:none;border-radius:12px;padding:12px 16px;cursor:pointer;background:var(--accent);color:#fff;font-weight:700}.ghost{background:#fff;border:1px solid var(--line);color:var(--text)}.subtle-btn{background:var(--accent-soft);color:var(--accent)}
.stack{display:grid}.gap-12{gap:12px}.alert{padding:14px 16px;border-radius:14px;margin-bottom:16px;border:1px solid var(--line)}.alert.success{background:#ecfdf3;color:#166534}.alert.error{background:#fef2f2;color:#991b1b}
table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}th{color:var(--muted);font-weight:700;background:#fafcff}.kv-grid>div{display:grid;gap:6px;padding:14px;border:1px solid var(--line);border-radius:14px;background:#fff}hr{border:none;border-top:1px solid var(--line);margin:16px 0}.pill-row{display:flex;gap:8px;flex-wrap:wrap}.break-all{word-break:break-all}code{background:#f1f5f9;padding:2px 6px;border-radius:6px}.section-space{margin-top:16px}.tiny{font-size:11px}.nowrap{white-space:nowrap}.actions-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.device-layout{align-items:start}.toolbar{display:flex;gap:10px;flex-wrap:wrap}
@media (max-width:980px){.sidebar{position:static;width:auto}.main{margin-left:0}.stats-grid,.stats-grid.four,.grid.two-col,.kv-grid,.actions-grid{grid-template-columns:1fr}}