:root{--green: #66bb6a;--green-dark: #5aa65d;--green-light: #e8f5e9;--blue: #1976d2;--blue-dark: #1565c0;--text-primary: #212121;--text-secondary: #424242;--text-tertiary: #616161;--bg-light: #f5f5f5;--bg-white: #ffffff;--border: #e0e0e0;--danger: #e53935;--danger-dark: #c62828;--warning: #f57c00;--warning-dark: #e65100}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--text-primary);background:var(--bg-light);-webkit-font-smoothing:antialiased}.navbar{display:flex;align-items:center;padding:0 24px;height:56px;background:var(--bg-white);border-bottom:1px solid var(--border);gap:24px}.navbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px}.brand-text{color:var(--text-primary)}.navbar-menu{display:flex;gap:4px}.navbar-item{padding:6px 14px;border-radius:6px;text-decoration:none;color:var(--text-secondary);font-size:14px;font-weight:500;transition:background .15s}.navbar-item:hover{background:var(--bg-light)}.navbar-item.active{background:var(--green-light);color:var(--green-dark)}.navbar-end{margin-left:auto;display:flex;align-items:center;gap:12px}.navbar-user{font-size:13px;color:var(--text-tertiary)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s,box-shadow .15s;white-space:nowrap}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--green);color:#fff}.btn-primary:hover:not(:disabled){background:var(--green-dark)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-secondary)}.btn-outline:hover{background:var(--bg-light)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-dark)}.btn-warning{background:var(--warning);color:#fff}.btn-warning:hover{background:var(--warning-dark)}.btn-secondary{background:var(--blue);color:#fff}.btn-secondary:hover{background:var(--blue-dark)}.btn-sm{padding:5px 10px;font-size:12px}.btn-full{width:100%}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg-light)}.login-card{background:var(--bg-white);border-radius:12px;padding:40px;width:100%;max-width:400px;box-shadow:0 1px 3px #00000014,0 4px 12px #0000000a}.login-header{text-align:center;margin-bottom:32px}.login-header h1{font-size:22px;margin-top:16px;color:var(--text-primary)}.login-header p{font-size:14px;color:var(--text-tertiary);margin-top:4px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-group input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;outline:none;transition:border-color .15s}.form-group input:focus{border-color:var(--green);box-shadow:0 0 0 3px var(--green-light)}.error-message{background:#ffebee;color:var(--danger);padding:10px 12px;border-radius:6px;font-size:13px;margin-bottom:16px}form .btn{margin-top:8px}.main-content{padding:24px;max-width:1200px;margin:0 auto}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-header h2{font-size:20px;font-weight:600}.device-count{font-size:13px;color:var(--text-tertiary);background:var(--bg-white);padding:4px 12px;border-radius:20px;border:1px solid var(--border)}.devices-table-wrapper{background:var(--bg-white);border-radius:10px;border:1px solid var(--border);overflow:hidden}.devices-table{width:100%;border-collapse:collapse}.devices-table thead{background:var(--bg-light)}.devices-table th{text-align:left;padding:10px 16px;font-size:12px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.5px}.devices-table td{padding:14px 16px;font-size:14px;border-top:1px solid var(--border)}.devices-table tbody tr:hover{background:#fafafa}.owner-cell{display:flex;align-items:center;gap:10px;font-weight:500}.owner-avatar{width:32px;height:32px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex-shrink:0}.status-badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:500}.status-active{background:var(--green-light);color:var(--green-dark)}.actions-cell{position:relative}.actions-menu{position:relative;display:inline-block}.btn-icon{background:transparent;border:1px solid var(--border);color:var(--text-secondary);font-size:18px;line-height:1;padding:4px 10px;border-radius:6px}.btn-icon:hover{background:var(--bg-light)}.dropdown-menu{position:absolute;right:0;top:100%;margin-top:4px;background:var(--bg-white);border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 16px #0000001f;min-width:160px;z-index:50;padding:4px 0}.dropdown-item{display:block;width:100%;padding:8px 14px;border:none;background:none;text-align:left;font-size:13px;color:var(--text-secondary);cursor:pointer}.dropdown-item:hover{background:var(--bg-light)}.dropdown-danger{color:var(--danger)}.dropdown-danger:hover{background:#ffebee}.dropdown-divider{height:1px;margin:4px 0;background:var(--border)}code{font-size:12px;background:var(--bg-light);padding:2px 6px;border-radius:4px;color:var(--text-secondary)}.toast{position:fixed;bottom:24px;right:24px;background:var(--text-primary);color:#fff;padding:12px 20px;border-radius:8px;font-size:14px;box-shadow:0 4px 12px #00000026;animation:slideIn .3s ease;z-index:100}@keyframes slideIn{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}.loading{display:flex;align-items:center;justify-content:center;min-height:200px;color:var(--text-tertiary);font-size:14px}