:root{--bg:#f5f7fb;--ink:#172033;--brand:#0f3b63;--accent:#1e88e5;--line:#dfe5ef;--card:#fff;--danger:#b42318;--success:#067647}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif}.topbar{background:var(--brand);color:#fff;padding:16px 28px;display:flex;justify-content:space-between;align-items:center;gap:18px}.topbar span{display:block;font-size:13px;opacity:.85;margin-top:2px}.topbar a{color:#fff;text-decoration:none;margin-left:16px;font-weight:600}.container{max-width:1180px;margin:26px auto;padding:0 18px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:18px}.metrics div,.panel,.card{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 4px 14px rgba(20,31,56,.06)}.metrics div{padding:18px}.metrics small{display:block;color:#667085;margin-bottom:10px}.metrics strong{font-size:32px}.panel{padding:22px;margin-bottom:18px}.search{display:flex;gap:10px}.search input{flex:1}.grid-form{display:grid;grid-template-columns:2fr 1fr;gap:14px}.grid-form .full{grid-column:1/-1}label{font-weight:700;font-size:14px}input,textarea{width:100%;margin-top:6px;border:1px solid var(--line);border-radius:10px;padding:12px;font:inherit}textarea{resize:vertical}button,.button{display:inline-block;border:0;border-radius:10px;padding:12px 16px;background:var(--accent);color:#fff;font-weight:700;text-decoration:none;cursor:pointer}.button.secondary{background:#667085}.danger{background:var(--danger);margin-top:10px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.card{padding:20px}.card h3{margin-top:0}.label,.muted{color:#667085}.card pre{white-space:pre-wrap;background:#f1f5f9;border-radius:10px;padding:12px;font-family:inherit}.edit-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:14px}.edit-item summary{font-weight:700;cursor:pointer}.alert{padding:12px 14px;border-radius:10px;margin-bottom:14px;background:#eef4ff}.alert.error{background:#fef3f2;color:var(--danger)}.alert.success{background:#ecfdf3;color:var(--success)}.empty{padding:20px;background:#fff;border:1px dashed var(--line);border-radius:12px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f3b63,#172033)}.login-card{width:min(420px,92vw);background:#fff;border-radius:18px;padding:32px;box-shadow:0 18px 60px rgba(0,0,0,.22)}.login-card h1{margin-bottom:4px}.login-card p{color:#667085;margin-top:0}.login-card button{width:100%;margin-top:16px}@media(max-width:760px){.topbar,.search{flex-direction:column;align-items:stretch}.metrics,.grid-form{grid-template-columns:1fr}.topbar nav a{display:inline-block;margin:8px 8px 0 0}}