:root{--color-primary: #0078d4;--color-primary-hover: #106ebe;--color-success: #107c10;--color-warning: #f7630c;--color-danger: #d13438;--color-neutral-bg: #faf9f8;--color-card-bg: #ffffff;--color-border: #e1dfdd}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,"Segoe UI Web (West European)",-apple-system,BlinkMacSystemFont,Roboto,Helvetica Neue,sans-serif;background-color:var(--color-neutral-bg);min-height:100vh;display:flex;flex-direction:column;color:#323130}.app-container{display:flex;flex-direction:column;min-height:100vh;width:100%}.app-header{background:#fff;border-bottom:1px solid #e1dfdd;padding:0 16px;height:48px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}.header-left{display:flex;align-items:center;gap:12px}.header-right{display:flex;align-items:center;gap:16px}.app-icon{font-size:20px;display:flex;align-items:center;justify-content:center;width:32px;height:32px;color:var(--color-primary)}.app-title{color:#323130;font-size:16px;font-weight:600;margin:0}.user-profile{display:flex;align-items:center;gap:8px;cursor:pointer;padding:4px 8px;border-radius:4px;transition:background-color .15s ease}.user-profile:hover{background-color:#f3f2f1}.user-name{font-size:14px;color:#323130;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#0078d4,#106ebe);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;text-transform:uppercase;flex-shrink:0}.app-subtitle{color:#ffffffe6;font-size:16px;margin:0}.content-container{flex:1;max-width:800px;width:100%;margin:0 auto;padding:32px 24px}.section-card{margin-bottom:24px;box-shadow:0 1.6px 3.6px #0002,0 .3px .9px #0000001c;border-radius:8px;background:var(--color-card-bg)}.card-content{padding:32px}.card-content.centered{text-align:center}.section-title{font-size:24px;font-weight:600;margin:0 0 16px;color:#323130}.section-text{margin:16px 0;color:#605e5c;font-size:14px}.field-label{display:block;font-weight:600;margin-bottom:8px;color:#323130;font-size:14px}.field-hint{font-size:12px;color:#605e5c;margin:4px 0 0}.file-name-text{font-size:12px;color:#605e5c;margin:8px 0 0;text-align:center}.speed-label{font-size:12px;color:#605e5c;margin:0 0 8px}.speed-value{font-size:28px;font-weight:600;color:#323130;margin:0}.success-title{font-size:32px;font-weight:600;margin:24px 0 8px;color:#323130}.success-subtitle{font-size:18px;margin:0 0 16px;color:#605e5c}.footer-text{font-size:12px;color:#605e5c;margin:0}.info-list{list-style-type:none;margin:16px 0;padding:0}.info-list li{padding:8px 0 8px 28px;position:relative}.info-list li:before{content:"•";position:absolute;left:8px;color:var(--color-primary);font-weight:700;font-size:18px}.field-container{margin-bottom:24px}.field-container fluent-text-field,.field-container fluent-text-area{width:100%}.button-container{display:flex;gap:12px;flex-wrap:wrap}.button-container.centered{justify-content:center}.button-container fluent-button{display:flex}.speed-results{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}.speed-card{background:var(--color-neutral-bg);padding:24px;border-radius:8px;text-align:center;border:1px solid var(--color-border)}.speed-card fluent-text{display:block}.speed-card fluent-text:first-child{margin-bottom:8px}.file-upload-container{text-align:center;margin:24px 0}.image-preview{margin:24px 0;text-align:center}.image-preview img{max-width:100%;max-height:400px;border-radius:8px;box-shadow:0 2px 8px #00000026;border:1px solid var(--color-border)}.success-icon{width:80px;height:80px;display:flex;align-items:center;justify-content:center;margin:0 auto}.centered{text-align:center}.app-footer{background-color:#fff;border-top:1px solid var(--color-border);padding:24px;text-align:center;margin-top:auto}@media screen and (max-width: 768px){.user-name{display:none}.content-container{padding:16px}.card-content{padding:24px 16px}.speed-results{grid-template-columns:1fr}.button-container{flex-direction:column}.button-container fluent-button{width:100%}}fluent-button{font-family:Segoe UI,"Segoe UI Web (West European)",-apple-system,BlinkMacSystemFont,Roboto,Helvetica Neue,sans-serif}fluent-button [slot=start]{display:flex;align-items:center}fluent-button [slot=start] svg{display:block}.app-icon svg{display:block}fluent-text-field,fluent-text-area{margin-bottom:4px}fluent-radio-group{display:flex;gap:24px}fluent-progress-ring{--accent-fill-rest: var(--color-primary)}fluent-progress{width:100%;max-width:400px;margin:16px auto}fluent-badge{font-weight:600}.message-bar{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:4px;margin:16px 0;font-size:14px;line-height:1.5}.message-bar-icon{flex-shrink:0;display:flex;align-items:center;justify-content:center}.message-bar-icon svg{display:block}.message-bar-text{flex:1}.message-bar-info{background-color:#deecf9;color:#003966}.message-bar-info .message-bar-icon{color:#0078d4}.message-bar-success{background-color:#dff6dd;color:#094509}.message-bar-success .message-bar-icon{color:#107c10}.message-bar-warning{background-color:#fff4ce;color:#3d2e00}.message-bar-warning .message-bar-icon{color:#f7630c}.message-bar-error{background-color:#fde7e9;color:#571316}.message-bar-error .message-bar-icon{color:#d13438}