:root{--nav:#111827;--brand:#ff7a00;--bg:#f3f4f6;--card:#fff;--text:#111827;--muted:#6b7280;--border:#e5e7eb}*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.layout{display:flex;min-height:100vh}.side{width:245px;background:var(--nav);color:#fff;padding:22px 16px}.brand{font-size:22px;font-weight:800;margin-bottom:28px}.brand span{color:var(--brand)}.side a{display:block;padding:11px 12px;border-radius:8px;margin:4px 0;color:#e5e7eb}.side a:hover{background:#1f2937}.main{flex:1;padding:28px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:15px}.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px}.metric{font-size:28px;font-weight:800}.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left;font-size:14px}.btn{display:inline-block;background:var(--brand);color:#fff;padding:9px 13px;border-radius:8px;border:0;cursor:pointer}.btn.dark{background:#111827}.btn.danger{background:#b91c1c}.form{max-width:760px;background:#fff;padding:22px;border-radius:12px;border:1px solid var(--border)}label{display:block;font-weight:700;margin:12px 0 6px}input,select,textarea{width:100%;padding:10px;border:1px solid #d1d5db;border-radius:8px}textarea{min-height:100px}.actions{display:flex;gap:7px}.login{max-width:420px;margin:10vh auto;background:#fff;padding:28px;border-radius:14px;border:1px solid var(--border)}