:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;color:#213547;background-color:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}.layout{min-height:100vh;display:flex;background-color:#f5f5f5;position:relative}.mobile-header{display:none;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.75rem 1rem;box-shadow:0 2px 8px #00000026;position:fixed;top:0;left:0;right:0;z-index:1001;align-items:center;justify-content:space-between;height:56px;min-height:56px}.hamburger-btn{background:none;border:none;cursor:pointer;padding:.5rem;display:flex;flex-direction:column;gap:4px;z-index:1002}.hamburger-line{width:25px;height:3px;background-color:#fff;border-radius:2px;transition:all .3s ease}.hamburger-line.open:nth-child(1){transform:rotate(45deg) translate(8px,8px)}.hamburger-line.open:nth-child(2){opacity:0}.hamburger-line.open:nth-child(3){transform:rotate(-45deg) translate(7px,-7px)}.mobile-user-info{display:flex;align-items:center}.mobile-user-info .user-name{font-size:.85rem;font-weight:500;max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mobile-header .logo{font-size:1rem;font-weight:600;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid #e0e0e0;box-shadow:0 -2px 8px #0000001a;z-index:1000;padding:.5rem 0;justify-content:space-around;align-items:center}.mobile-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.25rem;padding:.5rem;text-decoration:none;color:#666;background:none;border:none;cursor:pointer;transition:color .2s;flex:1;min-width:0}.mobile-nav-item.active{color:#667eea}.mobile-nav-icon{font-size:1.5rem;line-height:1}.mobile-nav-label{font-size:.7rem;font-weight:500;text-align:center}.sidebar{width:280px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;flex-direction:column;box-shadow:2px 0 8px #0000001a;position:fixed;left:0;top:0;height:100vh;overflow-y:auto;z-index:999;transition:transform .3s ease}.sidebar-overlay{display:none;position:fixed;inset:0;background-color:#00000080;z-index:998}.sidebar-header{padding:1.5rem 1rem;border-bottom:1px solid rgba(255,255,255,.1)}.logo-link{text-decoration:none;color:#fff;display:block}.logo-container{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.logo-text{font-size:1.25rem;font-weight:700;margin-left:30px;color:#fff}.logo-subtitle{font-size:.85rem;color:#ffffffe6;padding-left:1.25rem}.sidebar-nav{flex:1;padding:1rem 0}.nav-section{display:flex;flex-direction:column;gap:.25rem;padding:0 .75rem}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.875rem 1rem;color:#fff;text-decoration:none;border-radius:8px;transition:all .2s;font-weight:500}.nav-item:hover{background-color:#ffffff1a}.nav-item.active{background-color:#fff3;font-weight:600}.nav-icon{font-size:1.25rem;width:24px;text-align:center}.nav-text{flex:1}.sidebar-footer{padding:1rem;border-top:1px solid rgba(255,255,255,.1)}.settings-btn{background:transparent;border:none;color:#fff;cursor:pointer;padding:.5rem;border-radius:6px;transition:background-color .2s;font-size:1.25rem}.settings-btn:hover{background-color:#ffffff1a}.main-wrapper{flex:1;margin-left:280px;display:flex;flex-direction:column;min-height:100vh}.main-header{background:#fff;padding:1rem 2rem;box-shadow:0 2px 4px #0000000d;display:flex;justify-content:space-between;align-items:center;z-index:100}.header-left{display:flex;align-items:center;gap:.75rem}.page-title{margin:0;font-size:1.5rem;font-weight:600;color:#333}.header-right{display:flex;align-items:center;gap:1rem}.user-info{display:flex;align-items:center;gap:.75rem;padding:.5rem 1rem;background:#f8f9fa;border-radius:8px}.user-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1rem}.user-details{display:flex;flex-direction:column}.user-name{font-weight:600;color:#333;font-size:.95rem}.user-role{font-size:.8rem;color:#666}.logout-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-weight:500;transition:opacity .2s;font-size:.9rem}.logout-btn:hover{opacity:.9}.main-content{flex:1;padding:2rem;overflow-y:auto}@media(max-width:768px){.mobile-header,.mobile-bottom-nav{display:flex}.sidebar{width:280px;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:block}.main-wrapper{margin-left:0;margin-top:56px;margin-bottom:70px}.main-header{flex-direction:column;align-items:flex-start;gap:1rem;padding:1rem}.header-right{width:100%;justify-content:space-between}.main-content{padding:1rem}}@media(max-width:480px){.sidebar{width:260px}.main-content{padding:.75rem}.nav-item{padding:.75rem .875rem;font-size:.95rem}}.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem}.login-card{background:#fff;border-radius:12px;box-shadow:0 10px 40px #0003;padding:3rem;width:100%;max-width:400px}.login-header{text-align:center;margin-bottom:2rem}.login-header h1{color:#333;margin:0 0 .5rem;font-size:2rem}.login-header p{color:#666;margin:0}.login-form{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{color:#333;font-weight:500;font-size:.9rem}.form-group input{padding:.75rem;border:2px solid #e0e0e0;border-radius:6px;font-size:1rem;transition:border-color .2s}.form-group input:focus{outline:none;border-color:#667eea}.form-group input.input-error{border-color:#e74c3c}.form-group input.input-error:focus{border-color:#e74c3c}.field-error{color:#e74c3c;font-size:.85rem;margin-top:.25rem;display:block}.error-message{background-color:#fee;color:#c33;padding:.75rem;border-radius:6px;border:1px solid #fcc;font-size:.9rem}.login-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.75rem;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s}.login-button:hover:not(:disabled){opacity:.9}.login-button:disabled{opacity:.6;cursor:not-allowed}.dashboard{display:flex;flex-direction:column;gap:1.5rem;max-width:100%}.dashboard-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.dashboard-header h2{margin:0;color:#333;font-size:2rem}.dashboard-controls{display:flex;gap:1rem;flex-wrap:wrap}.device-filter-select,.session-select,.frequency-select{padding:.5rem 1rem;border:2px solid #e0e0e0;border-radius:6px;font-size:1rem;background:#fff;cursor:pointer;transition:border-color .2s}.device-filter-select:focus,.session-select:focus,.frequency-select:focus{outline:none;border-color:#667eea}.export-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.5rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:opacity .2s}.export-button:hover:not(:disabled){opacity:.9}.export-button:disabled{opacity:.6;cursor:not-allowed}.device-info{margin-bottom:1rem}.info-card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 4px #0000001a}.info-card h3{margin:0 0 1rem;color:#333;font-size:1.2rem}.info-grid{display:flex;flex-direction:column;gap:1rem}.info-grid>div{display:flex;flex-direction:row;gap:.5rem;align-items:center;padding:.5rem 0;border-bottom:1px solid #f0f0f0}.info-grid>div:last-child{border-bottom:none}.info-label{font-size:.9rem;color:#666;font-weight:500;min-width:180px}.info-value{font-size:1rem;color:#333;flex:1}.status-badge{display:inline-block;padding:.25rem .75rem;border-radius:12px;font-size:.9rem;font-weight:500;text-transform:capitalize}.no-data,.no-session{background:#fff;border-radius:8px;padding:3rem;text-align:center;box-shadow:0 2px 4px #0000001a}.no-data p,.no-session p{color:#666;font-size:1.1rem;margin:0}.data-table-container{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 4px #0000001a}.table-title{margin:0 0 1.5rem;color:#667eea;font-size:1.3rem;font-weight:600;padding-bottom:.75rem;border-bottom:2px solid #667eea}.table-title .device-name{font-size:1rem;font-weight:400;color:#666;margin-left:.5rem}.table-wrapper{overflow-x:auto;max-height:600px;overflow-y:auto}.sensor-data-table{width:100%;border-collapse:collapse;font-size:.95rem}.sensor-data-table thead{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;position:sticky;top:0;z-index:10}.sensor-data-table th{padding:.75rem 1rem;text-align:left;font-weight:600;font-size:.9rem;text-transform:uppercase;letter-spacing:.5px}.sensor-data-table tbody tr{border-bottom:1px solid #e0e0e0;transition:background-color .2s}.sensor-data-table tbody tr:hover{background-color:#f8f9fa}.sensor-data-table tbody tr:nth-child(2n){background-color:#fafafa}.sensor-data-table tbody tr:nth-child(2n):hover{background-color:#f0f0f0}.sensor-data-table td{padding:.75rem 1rem;color:#333}.sensor-data-table td:first-child{font-weight:500;color:#555}@media(max-width:768px){.dashboard-header{flex-direction:column;align-items:flex-start}.dashboard-controls{width:100%}.device-filter-select,.session-select,.frequency-select,.export-button{flex:1;min-width:150px}.info-grid>div{flex-direction:column;align-items:flex-start;gap:.25rem}.info-label{min-width:auto}.sensor-data-table{font-size:.85rem}.sensor-data-table th,.sensor-data-table td{padding:.5rem .75rem}}.devices-page{display:flex;flex-direction:column;gap:2rem}.devices-header{display:flex;justify-content:space-between;align-items:center}.devices-header h2{margin:0;color:#333;font-size:2rem}.add-device-button{background:#28a745;color:#fff;border:none;padding:.5rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:opacity .2s}.add-device-button:hover{opacity:.9}.loading,.no-devices{background:#fff;border-radius:8px;padding:3rem;text-align:center;box-shadow:0 2px 4px #0000001a}.loading p,.no-devices p{color:#666;font-size:1.1rem;margin:0}.devices-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}.device-card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 4px #0000001a;display:flex;flex-direction:column;gap:1rem;transition:transform .2s,box-shadow .2s}.device-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.device-card-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:1rem;border-bottom:1px solid #e0e0e0}.device-card-header h3{margin:0;color:#333;font-size:1.3rem}.status-badge.disabled{background-color:#f8d7da;color:#721c24}.device-card-body{display:flex;flex-direction:column;gap:.75rem;flex:1}.device-info-item{display:flex;justify-content:space-between;align-items:center}.info-label{font-size:.9rem;color:#666;font-weight:500}.info-value{font-size:.95rem;color:#333;font-weight:500}.info-value.logging-active{color:#28a745;font-weight:600}.device-card-actions{display:flex;justify-content:space-between;align-items:center;gap:.75rem;padding-top:1rem;border-top:1px solid #e0e0e0;flex-wrap:wrap}.device-actions-left{display:flex;gap:.75rem;flex:1}.device-actions-right{display:flex;gap:.5rem}.action-button{padding:.75rem;border:none;border-radius:6px;font-size:.95rem;font-weight:500;cursor:pointer;transition:opacity .2s}.device-actions-left .action-button{flex:1}.device-actions-right .action-button{padding:.5rem 1rem;font-size:.9rem}.start-button{background-color:#28a745;color:#fff}.start-button:hover:not(:disabled){opacity:.9}.start-button:disabled{opacity:.5;cursor:not-allowed}.stop-button{background-color:#dc3545;color:#fff}.stop-button:hover:not(:disabled){opacity:.9}.stop-button:disabled{opacity:.5;cursor:not-allowed}.edit-button{background-color:#667eea;color:#fff}.edit-button:hover:not(:disabled){opacity:.9}.delete-button{background-color:#dc3545;color:#fff}.delete-button:hover:not(:disabled){opacity:.9}.action-button:disabled{opacity:.5;cursor:not-allowed}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:2rem}.modal-content{background:#fff;border-radius:12px;box-shadow:0 10px 40px #0000004d;width:100%;max-width:500px;max-height:90vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid #e0e0e0}.modal-header h3{margin:0;color:#333;font-size:1.5rem}.modal-close{background:none;border:none;font-size:2rem;color:#666;cursor:pointer;padding:0;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:background-color .2s}.modal-close:hover{background-color:#f0f0f0}.device-form{padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}.device-form .form-group{display:flex;flex-direction:column;gap:.5rem}.device-form label{color:#333;font-weight:500;font-size:.9rem}.device-form input,.device-form textarea,.device-form select{padding:.75rem;border:2px solid #e0e0e0;border-radius:6px;font-size:1rem;font-family:inherit;transition:border-color .2s}.device-form input:focus,.device-form textarea:focus,.device-form select:focus{outline:none;border-color:#667eea}.device-form input.input-error,.device-form textarea.input-error,.device-form select.input-error{border-color:#e74c3c}.device-form .form-select{background-color:#fff;cursor:pointer}.device-form .field-error{color:#e74c3c;font-size:.85rem}.modal-actions{display:flex;gap:1rem;justify-content:flex-end;padding-top:1rem;border-top:1px solid #e0e0e0}.cancel-button{background:#f0f0f0;color:#333;border:none;padding:.75rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:background-color .2s}.cancel-button:hover{background:#e0e0e0}.submit-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:opacity .2s}.submit-button:hover:not(:disabled){opacity:.9}.submit-button:disabled{opacity:.6;cursor:not-allowed}.delete-confirm-modal{max-width:400px}.delete-confirm-content{padding:1.5rem}.delete-confirm-content p{color:#666;margin:0 0 1.5rem;line-height:1.5}.delete-confirm-button{background:#dc3545;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:opacity .2s}.delete-confirm-button:hover:not(:disabled){opacity:.9}.delete-confirm-button:disabled{opacity:.6;cursor:not-allowed}@media(max-width:768px){.devices-grid{grid-template-columns:1fr}.devices-header{flex-direction:column;align-items:flex-start;gap:1rem}.header-actions{width:100%;flex-direction:column}.refresh-button,.add-device-button{width:100%}.device-card-actions{flex-direction:column}.device-actions-left,.device-actions-right{width:100%}.device-actions-left .action-button{flex:1}.device-actions-right{justify-content:stretch}.device-actions-right .action-button{flex:1}.modal-content{margin:1rem;max-width:calc(100% - 2rem)}.modal-actions{flex-direction:column}.cancel-button,.submit-button,.delete-confirm-button{width:100%}}.sessions-page{display:flex;flex-direction:column;gap:2rem}.sessions-header{display:flex;justify-content:space-between;align-items:center}.header-actions{display:flex;gap:1rem;align-items:center}.sessions-header h2{margin:0;color:#333;font-size:2rem}.refresh-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.5rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:opacity .2s}.refresh-button:hover:not(:disabled){opacity:.9}.refresh-button:disabled{opacity:.6;cursor:not-allowed}.sessions-filters{display:flex;gap:2rem;flex-wrap:wrap;background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 4px #0000001a}.filter-group{display:flex;flex-direction:column;gap:.5rem;min-width:200px}.filter-group label{color:#333;font-weight:500;font-size:.9rem}.filter-select{padding:.75rem;border:2px solid #e0e0e0;border-radius:6px;font-size:1rem;font-family:inherit;transition:border-color .2s;background-color:#fff;cursor:pointer}.filter-select:focus{outline:none;border-color:#667eea}.loading,.no-sessions{background:#fff;border-radius:8px;padding:3rem;text-align:center;box-shadow:0 2px 4px #0000001a}.loading p,.no-sessions p{color:#666;font-size:1.1rem;margin:0}.sessions-table-container{background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;overflow-x:auto}.sessions-table{width:100%;border-collapse:collapse}.sessions-table thead{background-color:#f8f9fa}.sessions-table th{padding:1rem;text-align:left;font-weight:600;color:#333;border-bottom:2px solid #e0e0e0;font-size:.9rem;text-transform:uppercase;letter-spacing:.5px}.sessions-table td{padding:1rem;border-bottom:1px solid #e0e0e0;color:#666;font-size:.95rem}.sessions-table tbody tr:hover{background-color:#f8f9fa}.sessions-table tbody tr:last-child td{border-bottom:none}.status-badge{display:inline-block;padding:.25rem .75rem;border-radius:12px;font-size:.85rem;font-weight:500;text-transform:capitalize}.status-badge.active{background-color:#d4edda;color:#155724}.status-badge.completed{background-color:#d1ecf1;color:#0c5460}.export-button-small{background:#667eea;color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;font-size:.9rem;font-weight:500;cursor:pointer;transition:opacity .2s}.export-button-small:hover{opacity:.9}.export-all-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.5rem 1.5rem;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:opacity .2s}.export-all-button:hover:not(:disabled){opacity:.9}.export-all-button:disabled{opacity:.6;cursor:not-allowed}@media(max-width:768px){.sessions-header{flex-direction:column;align-items:flex-start;gap:1rem}.refresh-button{width:100%}.sessions-filters{flex-direction:column;gap:1rem}.filter-group{width:100%}.sessions-table-container{overflow-x:scroll}.sessions-table{min-width:1000px}}*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}
