:root{font-family:Inter,Arial,Helvetica,sans-serif;color:#172033;background:#f3f6fb}*{box-sizing:border-box}body{margin:0}a{color:inherit}.app-shell{min-height:100vh;display:flex}.sidebar{width:270px;background:#0e1b33;color:#fff;padding:24px 18px}.brand{display:flex;gap:12px;align-items:center;margin-bottom:28px}.brand-mark{width:42px;height:42px;border-radius:12px;background:#1b8cff;display:flex;align-items:center;justify-content:center;font-weight:800}.brand span{display:block;color:#aeb9cc;font-size:13px;margin-top:2px}.nav-item{display:block;text-decoration:none;color:#d8e1f1;padding:12px 14px;border-radius:10px;margin-bottom:8px;font-size:15px}.nav-item:hover,.nav-item.active{background:#1b8cff;color:#fff}.content{flex:1;padding:34px}.page-header{margin-bottom:24px}.page-header h1{margin:0 0 8px;font-size:30px}.page-header p{margin:0;color:#5d687a}.grid{display:grid;gap:18px}.grid.cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.grid.three{grid-template-columns:repeat(3,1fr)}.card{background:#fff;border-radius:16px;padding:22px;box-shadow:0 10px 30px #16223312;border:1px solid #e8edf5}.card h3{margin-top:0}.card p{color:#5d687a}.form-card{max-width:860px}label{display:block;font-weight:700;margin:14px 0 7px}input,select{width:100%;padding:12px 13px;border-radius:10px;border:1px solid #cbd5e1;font-size:15px;background:#fff}.button{display:inline-block;border:0;border-radius:10px;padding:12px 18px;background:#1b8cff;color:#fff;font-weight:800;cursor:pointer;text-decoration:none;margin-top:18px}.button.secondary{background:#eaf3ff;color:#0b5db8}.button:disabled{opacity:.65;cursor:not-allowed}.status-box{margin-top:18px;padding:14px;border-radius:12px;background:#edf7ff;color:#0d4f91;border:1px solid #cfe9ff}.status-box.error{background:#fff1f1;color:#a11f1f;border-color:#ffd1d1}.json-box{margin-top:18px;padding:16px;background:#111827;color:#e5e7eb;border-radius:12px;overflow:auto;font-size:13px}.table-card{margin-top:18px;overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;border-bottom:1px solid #e5eaf2;padding:12px;vertical-align:top}th{color:#334155;background:#f8fafc}@media (max-width: 800px){.app-shell{flex-direction:column}.sidebar{width:100%}.content{padding:20px}.grid.three{grid-template-columns:1fr}}