:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg:#f8fafc;--card-bg:#fff;--text:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--success:#10b981;--error:#ef4444}*,:after,:before{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}nav{background:#fff;padding:1rem 2rem;display:flex;justify-content:center;gap:2rem;border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:50;box-shadow:0 1px 3px rgba(0,0,0,.05)}nav a{color:var(--text-muted);text-decoration:none;font-weight:500;font-size:.95rem;transition:color .2s}nav a.active{font-weight:600}nav a.active,nav a:hover{color:var(--primary)}.container{max-width:1000px;margin:2rem auto;padding:0 1.5rem}h1{font-size:1.875rem;font-weight:700;margin-bottom:2rem;color:var(--text)}.card{background:var(--card-bg);border-radius:16px;box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);padding:2rem;border:1px solid var(--border)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.625rem 1.25rem;border-radius:10px;font-weight:600;font-size:.95rem;cursor:pointer;transition:all .2s;border:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-danger{background:#fee2e2;color:var(--error)}.btn-danger:hover{background:#fecaca}.badge{padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:600;text-transform:uppercase}.badge-online{background:#dcfce7;color:#166534}.badge-offline{background:#fee2e2;color:#991b1b}.badge-unknown{background:#f1f5f9;color:#475569}.modal{display:none;position:fixed;z-index:100;left:0;top:0;width:100%;height:100%;background:rgba(15,23,42,.4);align-items:center;justify-content:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.modal.active{display:flex}.modal-content{background:#fff;padding:2.5rem;border-radius:20px;width:95%;max-width:550px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04)}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.modal-header h2{font-size:1.5rem;font-weight:700}.close-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-muted)}.form-group{margin-bottom:1.25rem}.form-group label{display:block;font-size:.875rem;font-weight:600;margin-bottom:.5rem;color:var(--text)}.form-control{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:10px;font-size:1rem;transition:border-color .2s,box-shadow .2s}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(79,70,229,.1)}.form-row{display:flex;gap:1rem}.form-row>div{flex:1 1}.table-container{background:#fff;border-radius:16px;overflow:hidden;border:1px solid var(--border);box-shadow:0 4px 6px -1px rgba(0,0,0,.1)}table{width:100%;border-collapse:collapse}th{background:#f8fafc;color:var(--text-muted);padding:1rem 1.5rem;text-align:left;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em}td,th{border-bottom:1px solid var(--border)}td{padding:1.25rem 1.5rem;font-size:.95rem}tr:last-child td{border-bottom:none}tr:hover td{background:#fdfdfd}.flex-between{display:flex;justify-content:space-between;align-items:center}.empty-state{text-align:center;padding:4rem 2rem;color:var(--text-muted)}.spinner{width:18px;height:18px;border:2px solid rgba(79,70,229,.1);border-top:2px solid var(--primary);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(1turn)}}