:root{--primary-900: #0d0d1a;--primary-800: #1a1a2e;--primary-700: #16213e;--primary-600: #1a2744;--primary-500: #2a3a5c;--primary-400: #3a5078;--primary-300: #5a7aaa;--primary-200: #8aaacf;--primary-100: #c4daf0;--accent-600: #b34700;--accent-500: #e65100;--accent-400: #ff6d00;--accent-300: #ff9100;--accent-200: #ffb74d;--accent-100: #ffe0b2;--spark-500: #00b0ff;--spark-400: #40c4ff;--spark-300: #80d8ff;--success-500: #4caf50;--success-400: #66bb6a;--success-bg: #1b3a1b;--warning-500: #ff9800;--warning-400: #ffa726;--warning-bg: #3a2e1b;--danger-500: #f44336;--danger-400: #ef5350;--danger-bg: #3a1b1b;--info-500: #2196f3;--info-bg: #1b2a3a;--gray-900: #1a1a1a;--gray-800: #2d2d2d;--gray-700: #424242;--gray-600: #555;--gray-500: #777;--gray-400: #999;--gray-300: #bbb;--gray-200: #ddd;--gray-100: #eee;--gray-50: #f5f5f5;--weld-bead: #ff9800;--weld-arc: #64b5f6;--weld-spark: #fff176;--weld-hot: #ff5722;--weld-cool: #78909c;--weld-pass: #4caf50;--weld-fail: #f44336;--font-primary: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0,0,0,.3);--shadow-md: 0 4px 12px rgba(0,0,0,.4);--shadow-lg: 0 8px 24px rgba(0,0,0,.5);--shadow-glow-orange: 0 0 20px rgba(230,81,0,.3);--shadow-glow-blue: 0 0 20px rgba(0,176,255,.3);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-primary);background:var(--primary-900);color:var(--gray-200);line-height:1.6;min-height:100vh;overflow-x:hidden}.app-container{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{color:#fff;font-weight:600;line-height:1.3}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.1rem}p{margin-bottom:var(--space-md)}a{color:var(--spark-400);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--spark-300)}.page-container{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--primary-800);border-right:1px solid var(--primary-600);display:flex;flex-direction:column;flex-shrink:0}.sidebar-logo{padding:var(--space-lg);border-bottom:1px solid var(--primary-600);display:flex;align-items:center;gap:var(--space-sm)}.sidebar-logo .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--accent-400),var(--accent-300));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.2rem}.sidebar-logo h2{font-size:1.1rem;background:linear-gradient(135deg,var(--accent-300),var(--spark-400));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-nav{flex:1;padding:var(--space-md);overflow-y:auto}.nav-item{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);color:var(--gray-400);cursor:pointer;transition:all var(--transition-fast);margin-bottom:2px;text-decoration:none;font-size:.9rem}.nav-item:hover{background:var(--primary-600);color:var(--gray-200)}.nav-item.active{background:var(--primary-500);color:#fff}.nav-item .nav-icon{width:20px;text-align:center;font-size:1rem}.sidebar-footer{padding:var(--space-md);border-top:1px solid var(--primary-600)}.user-info{display:flex;align-items:center;gap:var(--space-sm)}.user-avatar{width:36px;height:36px;border-radius:var(--radius-full);background:var(--primary-500);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.85rem;color:var(--accent-300)}.main-content{flex:1;padding:var(--space-lg);overflow-y:auto;max-height:100vh}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg)}.page-header h1{font-size:1.5rem}.card{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:var(--space-lg);transition:all var(--transition-normal)}.card:hover{border-color:var(--primary-400)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-md)}.card-header h3{font-size:1rem;color:var(--gray-300);font-weight:500}.card-value{font-size:2rem;font-weight:700;color:#fff}.card-subtitle{font-size:.8rem;color:var(--gray-500);margin-top:var(--space-xs)}.grid{display:grid;gap:var(--space-md)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border:none;border-radius:var(--radius-md);font-family:var(--font-primary);font-size:.9rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--accent-500),var(--accent-400));color:#fff}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-600),var(--accent-500));box-shadow:var(--shadow-glow-orange)}.btn-secondary{background:var(--primary-600);color:var(--gray-200);border:1px solid var(--primary-400)}.btn-secondary:hover:not(:disabled){background:var(--primary-500)}.btn-success{background:var(--success-500);color:#fff}.btn-success:hover:not(:disabled){background:var(--success-400)}.btn-danger{background:var(--danger-500);color:#fff}.btn-danger:hover:not(:disabled){background:var(--danger-400)}.btn-sm{padding:var(--space-xs) var(--space-md);font-size:.8rem}.btn-lg{padding:var(--space-md) var(--space-xl);font-size:1rem}.form-group{margin-bottom:var(--space-md)}.form-label{display:block;margin-bottom:var(--space-xs);font-size:.85rem;color:var(--gray-400);font-weight:500}.form-input{width:100%;padding:var(--space-sm) var(--space-md);background:var(--primary-700);border:1px solid var(--primary-500);border-radius:var(--radius-md);color:#fff;font-family:var(--font-primary);font-size:.9rem;transition:border-color var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--spark-400);box-shadow:0 0 0 3px #00b0ff26}.form-input::placeholder{color:var(--gray-600)}select.form-input{cursor:pointer}.slider-container{margin-bottom:var(--space-md)}.slider-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-xs)}.slider-label{font-size:.8rem;color:var(--gray-400);font-weight:500}.slider-value{font-size:.8rem;color:var(--accent-300);font-weight:600;font-family:var(--font-mono)}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;background:var(--primary-600);border-radius:var(--radius-full);outline:none;cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;background:linear-gradient(135deg,var(--accent-400),var(--accent-300));border-radius:50%;cursor:pointer;box-shadow:0 0 6px #e6510066}input[type=range]::-moz-range-thumb{width:18px;height:18px;background:linear-gradient(135deg,var(--accent-400),var(--accent-300));border-radius:50%;cursor:pointer;border:none;box-shadow:0 0 6px #e6510066}.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:var(--radius-full);font-size:.75rem;font-weight:600}.badge-success{background:var(--success-bg);color:var(--success-400)}.badge-warning{background:var(--warning-bg);color:var(--warning-400)}.badge-danger{background:var(--danger-bg);color:var(--danger-400)}.badge-info{background:var(--info-bg);color:var(--info-500)}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:var(--space-sm) var(--space-md);text-align:left;border-bottom:1px solid var(--primary-600);font-size:.85rem}th{color:var(--gray-400);font-weight:600;text-transform:uppercase;font-size:.75rem;letter-spacing:.5px}tbody tr:hover{background:var(--primary-700)}.gauge-container{display:flex;flex-direction:column;align-items:center}.gauge-svg{width:120px;height:70px}.gauge-value{font-size:1.5rem;font-weight:700;color:#fff;margin-top:4px}.gauge-label{font-size:.75rem;color:var(--gray-500)}.progress-bar{height:8px;background:var(--primary-600);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;border-radius:var(--radius-full);transition:width var(--transition-slow)}.progress-fill.success{background:linear-gradient(90deg,var(--success-500),var(--success-400))}.progress-fill.warning{background:linear-gradient(90deg,var(--warning-500),var(--warning-400))}.progress-fill.danger{background:linear-gradient(90deg,var(--danger-500),var(--danger-400))}.progress-fill.info{background:linear-gradient(90deg,var(--info-500),var(--spark-400))}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal-content{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:var(--space-xl);max-width:600px;width:90%;max-height:80vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg)}.modal-close{background:none;border:none;color:var(--gray-500);font-size:1.5rem;cursor:pointer;padding:var(--space-xs)}.modal-close:hover{color:#fff}.toast-container{position:fixed;top:var(--space-md);right:var(--space-md);z-index:2000;display:flex;flex-direction:column;gap:var(--space-sm)}.toast{padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);font-size:.85rem;font-weight:500;animation:slideIn .3s ease,fadeOut .3s ease 3.7s;min-width:280px}.toast-success{background:var(--success-bg);color:var(--success-400);border:1px solid var(--success-500)}.toast-warning{background:var(--warning-bg);color:var(--warning-400);border:1px solid var(--warning-500)}.toast-danger{background:var(--danger-bg);color:var(--danger-400);border:1px solid var(--danger-500)}.toast-info{background:var(--info-bg);color:var(--info-500);border:1px solid var(--info-500)}.login-page{display:flex;min-height:100vh;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary-900),var(--primary-700))}.login-card{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-xl);padding:var(--space-2xl);width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.login-header{text-align:center;margin-bottom:var(--space-xl)}.login-header .logo-icon{width:56px;height:56px;margin:0 auto var(--space-md);background:linear-gradient(135deg,var(--accent-400),var(--accent-300));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:1.8rem;box-shadow:var(--shadow-glow-orange)}.login-header h1{font-size:1.5rem;margin-bottom:var(--space-xs)}.login-header p{color:var(--gray-500);font-size:.85rem}.login-tabs{display:flex;margin-bottom:var(--space-lg);background:var(--primary-700);border-radius:var(--radius-md);padding:3px}.login-tab{flex:1;padding:var(--space-sm);text-align:center;border:none;background:none;color:var(--gray-400);font-family:var(--font-primary);font-size:.85rem;font-weight:500;cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.login-tab.active{background:var(--primary-500);color:#fff}.login-form .form-group:last-of-type{margin-bottom:var(--space-lg)}.login-divider{display:flex;align-items:center;margin:var(--space-lg) 0;color:var(--gray-600);font-size:.8rem}.login-divider:before,.login-divider:after{content:"";flex:1;height:1px;background:var(--primary-600)}.login-divider:before{margin-right:var(--space-sm)}.login-divider:after{margin-left:var(--space-sm)}.welding-workspace{display:flex;gap:var(--space-md);height:calc(100vh - 140px)}.workspace-canvas-area{flex:1;display:flex;flex-direction:column;gap:var(--space-md)}.canvas-wrapper{flex:1;background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);overflow:hidden;position:relative;cursor:crosshair}.canvas-wrapper canvas{width:100%;height:100%;display:block}.workspace-sidebar{width:300px;display:flex;flex-direction:column;gap:var(--space-md);overflow-y:auto}.param-panel{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:var(--space-md)}.param-panel h3{font-size:.9rem;margin-bottom:var(--space-md);display:flex;align-items:center;gap:var(--space-sm)}.param-group{margin-bottom:var(--space-sm)}.param-group .slider-label,.param-group .slider-value{font-size:.75rem}.weld-status-bar{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-sm) var(--space-md);background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-md)}.status-indicator{display:flex;align-items:center;gap:var(--space-xs);font-size:.8rem}.status-dot{width:8px;height:8px;border-radius:50%}.status-dot.active{background:var(--success-500);box-shadow:0 0 6px var(--success-500)}.status-dot.idle{background:var(--gray-600)}.status-dot.error{background:var(--danger-500)}.metrics-row{display:flex;gap:var(--space-md);flex-wrap:wrap}.metric-chip{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);background:var(--primary-700);border-radius:var(--radius-md);font-size:.75rem}.metric-chip .metric-label{color:var(--gray-500)}.metric-chip .metric-value{color:var(--accent-300);font-weight:600;font-family:var(--font-mono)}.results-container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-md)}.score-hero{grid-column:1 / -1;text-align:center;padding:var(--space-xl)}.score-circle{width:160px;height:160px;margin:0 auto var(--space-md);border-radius:50%;display:flex;align-items:center;justify-content:center;flex-direction:column;border:4px solid}.score-circle.distinction{border-color:var(--success-500);background:#4caf501a}.score-circle.credit{border-color:var(--spark-500);background:#00b0ff1a}.score-circle.pass{border-color:var(--warning-500);background:#ff98001a}.score-circle.fail{border-color:var(--danger-500);background:#f443361a}.score-number{font-size:3rem;font-weight:800;color:#fff;line-height:1}.score-grade{font-size:1rem;font-weight:600;text-transform:uppercase;letter-spacing:1px}.sub-score-item{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-md)}.sub-score-name{width:140px;font-size:.85rem;color:var(--gray-400);flex-shrink:0}.sub-score-bar{flex:1;height:10px;background:var(--primary-600);border-radius:var(--radius-full);overflow:hidden}.sub-score-fill{height:100%;border-radius:var(--radius-full);transition:width .6s ease}.sub-score-val{width:40px;text-align:right;font-size:.85rem;font-weight:600;font-family:var(--font-mono)}.defect-card{background:var(--primary-700);border:1px solid var(--primary-500);border-radius:var(--radius-md);padding:var(--space-md);margin-bottom:var(--space-sm)}.defect-card.high-risk{border-left:3px solid var(--danger-500)}.defect-card.medium-risk{border-left:3px solid var(--warning-500)}.defect-card.low-risk{border-left:3px solid var(--success-500)}.defect-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-xs)}.defect-name{font-weight:600;font-size:.9rem}.defect-probability{font-size:.8rem;font-weight:600;font-family:var(--font-mono)}.defect-description{font-size:.8rem;color:var(--gray-500)}.competency-row{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) 0;border-bottom:1px solid var(--primary-600)}.competency-code{font-family:var(--font-mono);font-size:.8rem;color:var(--spark-400);width:60px}.competency-name{flex:1;font-size:.85rem}.competency-level{font-size:.75rem;font-weight:600;padding:2px 10px;border-radius:var(--radius-full)}.competency-level.competent{background:var(--success-bg);color:var(--success-400)}.competency-level.developing{background:var(--warning-bg);color:var(--warning-400)}.competency-level.not_yet_competent{background:var(--danger-bg);color:var(--danger-400)}.dashboard-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md);margin-bottom:var(--space-lg)}.stat-card{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:var(--space-lg)}.stat-card .stat-icon{width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.2rem;margin-bottom:var(--space-sm)}.stat-card .stat-icon.orange{background:#e6510033}.stat-card .stat-icon.blue{background:#00b0ff33}.stat-card .stat-icon.green{background:#4caf5033}.stat-card .stat-icon.red{background:#f4433633}.chart-container{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:var(--space-lg)}.chart-container canvas{max-height:300px}.feedback-section{margin-bottom:var(--space-lg)}.feedback-section h3{font-size:1rem;margin-bottom:var(--space-md);padding-bottom:var(--space-xs);border-bottom:1px solid var(--primary-600)}.feedback-item{display:flex;gap:var(--space-sm);margin-bottom:var(--space-sm);padding:var(--space-sm);background:var(--primary-700);border-radius:var(--radius-md);font-size:.85rem}.feedback-item .feedback-icon{flex-shrink:0;width:20px;text-align:center}.feedback-item.strength .feedback-icon{color:var(--success-400)}.feedback-item.weakness .feedback-icon{color:var(--danger-400)}.feedback-item.improvement .feedback-icon{color:var(--warning-400)}.practice-item{padding:var(--space-sm) var(--space-md);background:var(--primary-700);border-radius:var(--radius-md);margin-bottom:var(--space-sm);font-size:.85rem}.practice-item .practice-focus{font-weight:600;color:var(--accent-300)}.practice-item .practice-sessions{font-size:.75rem;color:var(--gray-500);margin-top:2px}.tutor-container{display:flex;flex-direction:column;height:calc(100vh - 140px)}.tutor-messages{flex:1;overflow-y:auto;padding:var(--space-md);display:flex;flex-direction:column;gap:var(--space-sm)}.tutor-message{max-width:80%;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);font-size:.85rem;line-height:1.5}.tutor-message.assistant{align-self:flex-start;background:var(--primary-700);border:1px solid var(--primary-500)}.tutor-message.user{align-self:flex-end;background:var(--primary-500);color:#fff}.tutor-input-area{display:flex;gap:var(--space-sm);padding:var(--space-md);border-top:1px solid var(--primary-600)}.tutor-input-area input{flex:1}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{transform:translate(100px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes arcGlow{0%,to{filter:drop-shadow(0 0 4px var(--weld-arc))}50%{filter:drop-shadow(0 0 12px var(--weld-arc))}}@media (max-width: 1200px){.dashboard-stats,.grid-4{grid-template-columns:repeat(2,1fr)}.welding-workspace{flex-direction:column;height:auto}.workspace-sidebar{width:100%;flex-direction:row;flex-wrap:wrap}.workspace-sidebar .param-panel{flex:1;min-width:250px}.results-container{grid-template-columns:1fr}}@media (max-width: 768px){.sidebar{display:none}.main-content{padding:var(--space-md)}.dashboard-stats,.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.login-card{margin:var(--space-md);padding:var(--space-lg)}.metrics-row{flex-direction:column}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--primary-900)}::-webkit-scrollbar-thumb{background:var(--primary-500);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--primary-400)}.welding-page{display:flex;flex-direction:column;gap:var(--space-md);padding:var(--space-md);min-height:calc(100vh - 56px)}.welding-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-sm) var(--space-md);background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-md)}.welding-toolbar h2{font-size:1.1rem;margin:0}.toolbar-controls{display:flex;align-items:center;gap:var(--space-sm)}.joint-select{padding:6px 12px;background:var(--primary-700);color:#fff;border:1px solid var(--primary-500);border-radius:var(--radius-sm);font-size:.85rem;cursor:pointer}.joint-select:disabled{opacity:.6;cursor:not-allowed}.loading-hint{font-size:.8rem;color:var(--gray-500)}.session-error{color:var(--danger-400);font-size:.8rem}.welding-layout{display:grid;grid-template-columns:1fr 340px;gap:var(--space-md);min-height:520px}.welding-main{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:0;overflow:hidden;position:relative}.welding-canvas-wrapper{position:relative;width:100%;height:100%;min-height:520px}.welding-canvas{display:block;width:100%;height:100%;cursor:crosshair}.welding-sidebar{display:flex;flex-direction:column;gap:var(--space-md);overflow-y:auto;max-height:720px}.torch-controller{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-md);padding:var(--space-md)}.panel-title{font-size:.9rem;font-weight:600;margin:0 0 var(--space-sm) 0;padding-bottom:var(--space-xs);border-bottom:1px solid var(--primary-600)}.control-group{margin-bottom:var(--space-sm)}.control-group label{display:block;font-size:.75rem;color:var(--gray-400);margin-bottom:4px}.control-group input[type=range]{width:100%}.slider-value{float:right;font-size:.75rem;color:var(--accent-300);font-weight:600;font-family:var(--font-mono)}.torch-buttons{margin-top:var(--space-md);display:flex;gap:var(--space-sm)}.torch-buttons .btn{width:100%}.weld-bead-info{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-md);padding:var(--space-md)}.bead-preview{display:flex;justify-content:center;padding:var(--space-md) 0;background:#0003;border-radius:var(--radius-sm);margin-bottom:var(--space-sm)}.bead-sample{transition:all .3s ease}.bead-stats{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-sm)}.bead-stat{display:flex;justify-content:space-between;font-size:.8rem}.bead-stat .stat-label{color:var(--gray-500)}.bead-stat .stat-value{font-weight:600;font-family:var(--font-mono);color:var(--accent-300)}.quality-badge{padding:2px 8px;border-radius:10px;font-size:.7rem;text-transform:uppercase}.quality-badge.good{background:#4caf5033;color:#66bb6a}.quality-badge.fair{background:#ff980033;color:#ffa726}.quality-badge.poor{background:#f4433633;color:#ef5350}.parameter-panel{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-md);padding:var(--space-md)}.param-readouts{display:flex;flex-direction:column;gap:6px}.readout{display:flex;justify-content:space-between;font-size:.8rem;padding:4px 0;border-bottom:1px solid rgba(255,255,255,.05)}.readout-label{color:var(--gray-500)}.readout-value{font-weight:600;font-family:var(--font-mono);color:var(--accent-300)}.param-alerts{margin-top:var(--space-sm);display:flex;flex-direction:column;gap:6px}.param-alert{padding:6px 10px;border-radius:var(--radius-sm);font-size:.75rem}.param-alert.alert-warning{background:#ff980026;border-left:3px solid #ff9800;color:#ffb74d}.param-alert.alert-danger{background:#f4433626;border-left:3px solid #f44336;color:#ef5350}.welding-status-bar{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-sm) var(--space-md);background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-md);font-size:.8rem;font-family:var(--font-mono);color:var(--gray-300)}.status-indicator{font-weight:700}.status-indicator.active{color:var(--danger-400);animation:pulse 1.5s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}@media (max-width: 1024px){.welding-layout{grid-template-columns:1fr}.welding-sidebar{max-height:none}}.user-menu{display:flex;align-items:center;gap:10px;padding:6px 10px 6px 6px;background:var(--primary-800);border:1px solid var(--primary-600);border-radius:999px}.user-menu-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#e65100,#ff9100);color:#fff;font-weight:700;font-size:.8rem;display:flex;align-items:center;justify-content:center;flex-shrink:0}.user-menu-info{display:flex;flex-direction:column;line-height:1.2}.user-menu-name{font-size:.8rem;font-weight:600;color:#fff}.user-menu-role{font-size:.65rem;color:var(--gray-500);text-transform:uppercase;letter-spacing:.05em}.user-menu-logout{background:transparent;border:1px solid var(--primary-500);color:var(--gray-300);padding:4px 10px;border-radius:999px;font-size:.75rem;cursor:pointer;transition:all .15s ease}.user-menu-logout:hover{border-color:var(--danger-400);color:var(--danger-400);background:#f443361a}.page-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.page-actions{display:flex;align-items:center;gap:12px}.progress-page{padding:20px;max-width:1200px;margin:0 auto}.back-link{display:inline-block;font-size:.85rem;color:var(--primary-light);margin-bottom:6px;text-decoration:none}.back-link:hover{text-decoration:underline}.dashboard-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:16px}.dashboard-header h2{margin:0}.session-history-canvas{width:100%;display:block}.session-list-wrap{overflow-x:auto;margin-top:12px}.session-list-table{width:100%;border-collapse:collapse;font-size:.85rem}.session-list-table th{text-align:left;padding:8px 12px;background:var(--primary-700);color:var(--gray-300);font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--primary-500)}.session-list-table td{padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.05);color:var(--gray-200)}.session-row{cursor:pointer;transition:background .15s ease}.session-row:hover{background:var(--primary-700)}.grade-badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:.7rem;font-weight:600;text-transform:capitalize}.grade-badge.grade-distinction{background:#10b98126;color:#10b981}.grade-badge.grade-credit{background:#3b82f626;color:#60a5fa}.grade-badge.grade-pass{background:#f59e0b26;color:#fbbf24}.grade-badge.grade-fail{background:#ef444426;color:#f87171}.chart-hint{font-size:.8rem;color:var(--gray-500);margin:4px 0 12px}.chart-empty{font-size:.85rem;color:var(--gray-500);padding:24px;text-align:center}.trainer-row-clickable{cursor:pointer;transition:background .15s ease}.trainer-row-clickable:hover{background:var(--primary-700)}.dashboard-loading,.dashboard-error{padding:40px;text-align:center;color:var(--gray-300)}.dashboard-error{color:var(--danger-400)}.empty-state{padding:60px 20px;text-align:center;color:var(--gray-400)}.empty-state p{margin-bottom:12px}.skill-breakdown{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:20px;margin:20px 0}.skill-breakdown h3{margin:0 0 16px;font-size:1rem}.skill-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px}.skill-row{display:grid;grid-template-columns:130px 1fr 40px;align-items:center;gap:10px;font-size:.85rem}.skill-label{color:var(--gray-400)}.skill-bar-track{height:8px;background:var(--primary-600);border-radius:4px;overflow:hidden}.skill-bar-fill{height:100%;border-radius:4px;transition:width .3s ease}.skill-value{text-align:right;font-family:var(--font-mono);color:var(--gray-200);font-weight:600}.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin:20px 0}.stat-card{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:4px}.stat-card-value{font-size:1.8rem;font-weight:800;color:#fff;font-family:var(--font-mono);line-height:1}.stat-card-label{font-size:.8rem;color:var(--gray-500)}.stat-card.accent-green .stat-card-value{color:#10b981}.stat-card.accent-amber .stat-card-value{color:#f59e0b}.chart-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}.chart-card{background:var(--primary-800);border:1px solid var(--primary-600);border-radius:var(--radius-lg);padding:20px}.chart-card.wide{grid-column:1 / -1}.chart-card h3{margin:0 0 12px;font-size:.95rem}@media (max-width: 900px){.chart-row{grid-template-columns:1fr}}