@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--primary-color: #4f46e5;--primary-hover: #4338ca;--danger-color: #ef4444;--danger-hover: #dc2626;--success-color: #22c55e;--warning-color: #f59e0b;--info-color: #3b82f6;--bg-light: #f8fafc;--bg-dark: #1f2937;--text-light: #f9fafb;--text-dark: #111827;--border-color: #e5e7eb;--shadow: 0 1px 3px 0 rgba(0,0,0,.1), 0 1px 2px -1px rgba(0,0,0,.1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,sans-serif;background-color:var(--bg-light);color:var(--text-dark);-webkit-font-smoothing:antialiased}.header{background:#fff;padding:16px 40px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-color);box-shadow:var(--shadow)}.header h1{font-size:20px;font-weight:600}.user-info{display:flex;gap:16px;align-items:center}.user-info span{font-size:14px;font-weight:500}.user-info button{background:transparent;color:#6b7280;border:1px solid var(--border-color);padding:8px 16px;border-radius:6px;cursor:pointer;font-weight:500;transition:all .2s}.user-info button:hover{background:#f3f4f6}.content{max-width:1400px;margin:0 auto;padding:32px 20px}.section{background:#fff;padding:32px;margin-bottom:32px;border-radius:12px;box-shadow:var(--shadow)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.section-header h2{font-size:20px;font-weight:600}.btn-primary{background:var(--primary-color);color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-weight:500;transition:all .2s}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-danger{background:var(--danger-color);color:#fff;border:none;padding:8px 12px;border-radius:6px;cursor:pointer;font-weight:500;transition:all .2s}.btn-danger:hover{background:var(--danger-hover)}.btn-success{background:var(--success-color);color:#fff;border:none;padding:8px 12px;border-radius:6px;cursor:pointer;font-weight:500}.btn-warning{background:var(--warning-color);color:#fff;border:none;padding:8px 12px;border-radius:6px;cursor:pointer;font-weight:500}.btn-secondary{background:#6b7280;color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-weight:500;transition:all .2s}.btn-secondary:hover{background:#4b5563}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.login-box{background:#fff;padding:40px;border-radius:12px;box-shadow:0 20px 25px -5px #0000001a;width:100%;max-width:400px;text-align:center}.login-box h1{font-size:24px;margin-bottom:8px;color:var(--text-dark)}.login-box p{margin-bottom:24px;color:#6b7280}.login-box form{display:flex;flex-direction:column;gap:16px}.login-box input{padding:12px 16px;border:1px solid var(--border-color);border-radius:8px;font-size:14px;transition:border-color .2s}.login-box input:focus{outline:none;border-color:var(--primary-color)}.login-box button{padding:12px;background:var(--primary-color);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:16px;font-weight:600;transition:all .2s}.login-box button:hover{background:var(--primary-hover)}.table-container{overflow-x:auto}.data-table{width:100%;border-collapse:collapse;font-size:14px}.data-table th,.data-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-color)}.data-table th{font-weight:600;background-color:var(--bg-light);position:sticky;top:0}.data-table tr:hover{background-color:#f9fafb}.status-light{width:10px;height:10px;border-radius:50%;display:inline-block;margin-right:8px}.status-light.connected{background:var(--success-color)}.status-light.disconnected{background:var(--danger-color)}.modal-backdrop{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal{background:#fff;padding:24px;border-radius:12px;width:90%;max-width:500px;box-shadow:0 25px 50px -12px #00000040}.modal h3{margin-bottom:16px;font-size:18px;font-weight:600}.modal input,.modal select{width:100%;padding:10px;border-radius:6px;border:1px solid var(--border-color);margin-bottom:20px;font-size:14px}.modal-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:24px}.customer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:24px}.customer-card{background:#fff;border-radius:12px;box-shadow:var(--shadow);border-left:5px solid var(--success-color);transition:all .3s;cursor:pointer}.customer-card:hover{transform:translateY(-4px);box-shadow:0 10px 15px -3px #0000001a}.customer-card.disconnected{border-left-color:var(--danger-color)}.card-header{padding:16px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.card-header h3{margin:0;font-size:16px;font-weight:600}.status-badge{font-size:12px;font-weight:600;padding:4px 10px;border-radius:99px;color:#fff}.status-badge.connected{background:var(--success-color)}.status-badge.disconnected{background:var(--danger-color)}.card-body{padding:20px}.data-point{margin-bottom:15px}.data-point span{font-size:14px;color:#6b7280;display:block;margin-bottom:4px}.data-point p{font-size:24px;font-weight:700;margin-top:5px}.relay-btn{padding:8px 16px;border:none;border-radius:6px;font-weight:600;cursor:pointer;color:#fff;transition:all .2s}.relay-btn.on{background:var(--success-color)}.relay-btn.off{background:var(--danger-color)}.relay-btn:hover{opacity:.9}.form-container{background:var(--bg-light);padding:24px;border-radius:8px;margin-bottom:24px}.user-form{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:12px;align-items:end}.user-form input,.user-form select{padding:10px;border:1px solid var(--border-color);border-radius:6px;font-size:14px;width:100%}.role-badge{display:inline-block;padding:4px 10px;border-radius:999px;font-weight:600;font-size:12px;color:#fff}.role-admin{background:var(--danger-color)}.role-service{background:var(--warning-color);color:var(--text-dark)}.role-customer{background:var(--success-color)}.no-devices{text-align:center;padding:40px;color:#6b7280;font-size:16px}.device-control{padding:20px}.status-grid,.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin:20px 0}.status-item,.setting-item{background:#f8f9fa;padding:15px;border-radius:8px;border-left:4px solid #4f46e5}.status-item .label{display:block;font-size:12px;color:#6b7280;margin-bottom:5px}.status-item .value{font-size:24px;font-weight:700;color:#111827}.setting-item label{display:block;margin-bottom:8px;font-weight:500;color:#4b5563}.setting-item input,.setting-item select{width:100%;padding:10px;border:1px solid #e5e7eb;border-radius:6px;font-size:14px;background:#fff}.setting-item input:focus,.setting-item select:focus{outline:none;border-color:#4f46e5}.action-buttons{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}.loading{text-align:center;padding:40px;font-size:18px;color:#6b7280}.device-detail-header{display:flex;align-items:center;gap:16px;margin-bottom:24px}.device-detail-header h2{font-size:24px;font-weight:700}.device-type-badge{background:#e0e7ff;color:#4f46e5;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}.tab-container{display:flex;border-bottom:1px solid #e5e7eb;margin-bottom:24px}.tab{padding:12px 24px;background:none;border:none;cursor:pointer;font-weight:500;color:#6b7280;border-bottom:3px solid transparent}.tab.active{color:#4f46e5;border-bottom-color:#4f46e5}.tab-content{padding:20px 0}.chart-container{height:300px;margin:24px 0;background:#fff;border-radius:8px;padding:20px;box-shadow:var(--shadow)}.history-table{width:100%;border-collapse:collapse}.history-table th,.history-table td{padding:12px;text-align:left;border-bottom:1px solid #e5e7eb}.history-table th{background:#f9fafb;font-weight:600}.alert-banner{background:#fee2e2;color:#991b1b;padding:12px 16px;border-radius:8px;margin-bottom:20px;display:flex;align-items:center;gap:10px}.alert-banner.success{background:#d1fae5;color:#065f46}.alert-banner.warning{background:#fef3c7;color:#92400e}@media(max-width:900px){.user-form,.customer-grid,.status-grid,.settings-grid{grid-template-columns:1fr}.header{padding:16px 20px;flex-direction:column;gap:16px;align-items:flex-start}.content{padding:16px}.section{padding:20px}}