:root{font-family:system-ui,-apple-system,sans-serif;line-height:1.5;color:#1a1a1a;background:#f5f5f5}*{box-sizing:border-box}body{margin:0}#root{min-height:100vh}.app{max-width:1200px;margin:0 auto;padding:1rem}.header{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;border-bottom:1px solid #ddd;margin-bottom:1.5rem}.header h1{margin:0;font-size:1.5rem}.nav{display:flex;gap:1rem}.nav a{color:#06c;text-decoration:none}.nav a:hover{text-decoration:underline}.nav a.active{font-weight:600}.card{background:#fff;border-radius:8px;box-shadow:0 1px 3px #00000014;padding:1.25rem;margin-bottom:1rem}.card h2{margin:0 0 1rem;font-size:1.1rem}.form-row{margin-bottom:1rem}.form-row label{display:block;margin-bottom:.25rem;font-weight:500}.form-row input{width:100%;max-width:400px;padding:.5rem;border:1px solid #ccc;border-radius:4px}.btn{padding:.5rem 1rem;border-radius:4px;border:1px solid #0066cc;background:#06c;color:#fff;cursor:pointer;font-size:.95rem}.btn:hover{background:#0052a3}.btn-secondary{background:#fff;color:#06c}.btn-secondary:hover{background:#f0f0f0}.btn-danger{border-color:#c00;background:#c00}.btn-danger:hover{background:#a00}.btn:disabled{opacity:.6;cursor:not-allowed}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:.5rem .75rem;text-align:left;border-bottom:1px solid #eee}th{font-weight:600;background:#f9f9f9}tr:hover{background:#fafafa}.alert{padding:.75rem 1rem;border-radius:4px;margin-bottom:1rem}.alert-error{background:#fee;color:#c00;border:1px solid #fcc}.alert-success{background:#efe;color:#060;border:1px solid #cfc}.alert-info{background:#e8f4fc;color:#055;border:1px solid #b8daff}.login-box{max-width:420px;margin:4rem auto;padding:2rem;background:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a}.login-box h1{margin:0 0 1.5rem;font-size:1.5rem}.metrics-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1rem}.metric{background:#fff;padding:1rem;border-radius:8px;box-shadow:0 1px 3px #00000014}.metric .value{font-size:1.5rem;font-weight:700}.metric .label{font-size:.85rem;color:#666;margin-top:.25rem}.loading{color:#666;padding:1rem}.copy-hint{font-size:.85rem;color:#666;margin-top:.5rem}