:root{--bg:#f3f5f7;--card:#fff;--text:#1b2530;--muted:#65717d;--line:#dfe5ea;--nav:#14202b;--accent:#235b78;--ok:#177245;--warn:#9a6700;--danger:#a92d2d}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text)}
.topbar{background:var(--nav);color:#fff;padding:16px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:800;letter-spacing:.3px;font-size:21px}.brand span{font-weight:500}.version{font-size:12px;opacity:.7;margin-top:2px}
nav{display:flex;gap:16px;flex-wrap:wrap}nav a{color:#fff;text-decoration:none;font-size:14px;opacity:.9}
.container{max-width:1160px;margin:28px auto;padding:0 18px}.footer{text-align:center;color:var(--muted);padding:30px 10px;font-size:13px}
h1{font-size:28px;margin:0 0 6px}.lead{color:var(--muted);margin:0 0 24px}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.metric{font-size:28px;font-weight:750;margin-top:6px}.label{font-size:13px;color:var(--muted)}
.status{display:inline-flex;align-items:center;gap:7px;font-weight:650}.dot{width:9px;height:9px;border-radius:50%;background:var(--ok)}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
th,td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}th{background:#f7f9fa}
input,select,textarea{width:100%;padding:10px 11px;border:1px solid #cbd3da;border-radius:7px;background:#fff;font:inherit}
label{display:block;font-size:13px;font-weight:650;margin:13px 0 6px}.btn{display:inline-block;border:0;border-radius:7px;padding:10px 15px;background:var(--accent);color:#fff;text-decoration:none;font-weight:700;cursor:pointer}
.btn.secondary{background:#566674}.btn.danger{background:var(--danger)}
.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:18px}.alert{padding:12px 14px;border-radius:8px;margin:0 0 16px;background:#eaf1f5}
.alert.success{background:#e8f5ee;color:#145c38}.alert.error{background:#f9e9e9;color:#842626}.alert.warning{background:#fff3d6;color:#775100}
.form-card{max-width:660px;margin:20px auto}.muted{color:var(--muted)}code{background:#eef1f3;padding:2px 5px;border-radius:4px}
pre{white-space:pre-wrap;background:#111a22;color:#d8e4ee;padding:14px;border-radius:8px;overflow:auto}
@media(max-width:850px){.grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:560px){.grid,.grid.two{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}}