:root{--bg:#f7f8fb;--surface:#fff;--text:#1f2937;--muted:#6b7280;--border:#e5e7eb;--primary:#0f172a;--accent:#2563eb}*{box-sizing:border-box}body,html{padding:0;margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.container{max-width:1200px;margin:0 auto;padding:24px}.layout{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background:var(--primary);color:#fff;padding:24px 18px}.sidebar h1{font-size:24px;margin:0 0 24px}.sidebar nav{display:grid;grid-gap:8px;gap:8px}.sidebar a{padding:10px 12px;border-radius:10px;color:#dbeafe}.sidebar a:hover{background:hsla(0,0%,100%,.08)}.main{padding:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:0 4px 14px rgba(15,23,42,.05)}.grid{display:grid;grid-gap:16px;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.muted{color:var(--muted)}.badge{display:inline-block;padding:4px 8px;background:#eff6ff;color:#1d4ed8;border-radius:999px;font-size:12px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}td,th{padding:12px 10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{font-size:14px;color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--border);padding:10px 14px;background:#fff;cursor:pointer}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-danger{background:#b91c1c;color:#fff;border-color:#b91c1c}.form{display:grid;grid-gap:16px;gap:16px}.field{display:grid;grid-gap:6px;gap:6px}.field label{font-weight:600}.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}.field textarea{min-height:120px;resize:vertical}.error{color:#b91c1c}@media (max-width:900px){.layout{grid-template-columns:1fr}.sidebar{padding-bottom:12px}.grid-2{grid-template-columns:1fr}}