:root{--color-bg-root:#0f172a;--color-bg-default:#1e293b;--color-bg-secondary:#334155;--color-bg-tertiary:#475569;--color-text:#f1f5f9;--color-text-secondary:#94a3b8;--color-accent:#6366f1;--color-accent-hover:#4f46e5;--color-success:#10b981;--color-error:#ef4444;--color-warning:#f59e0b;--color-border:#334155;--font-sans:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--radius-sm:12px;--radius-md:16px;--radius-lg:24px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%}body{font-family:var(--font-sans);background-color:var(--color-bg-root);color:var(--color-text);-webkit-font-smoothing:antialiased;line-height:1.5}input,textarea,select,button{font-family:inherit;font-size:inherit}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}.app-layout{flex-direction:column;min-height:100%;display:flex}.app-nav{background:var(--color-bg-default);border-bottom:1px solid var(--color-border);z-index:100;align-items:center;gap:32px;height:56px;padding:0 24px;display:flex;position:sticky;top:0}.app-nav .logo{color:var(--color-text);align-items:center;gap:10px;font-size:18px;font-weight:700;text-decoration:none;display:flex}.app-nav .logo-icon{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.app-nav .nav-links{gap:4px;display:flex}.app-nav .nav-link{color:var(--color-text-secondary);border-radius:8px;align-items:center;gap:6px;padding:8px 14px;font-size:14px;font-weight:500;text-decoration:none;transition:all .15s;display:flex}.app-nav .nav-link:hover{background:var(--color-bg-secondary);color:var(--color-text);text-decoration:none}.app-nav .nav-link.active{color:var(--color-accent);background:#6366f126}.app-nav .nav-right{align-items:center;gap:8px;margin-left:auto;display:flex}.app-content{flex:1;width:100%;max-width:960px;margin:0 auto;padding:24px}.auth-page{background:linear-gradient(135deg,#0f172a,#1e293b,#0f172a);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.auth-card{text-align:center;width:100%;max-width:420px}.auth-card .logo-container{margin-bottom:24px}.auth-card .logo-gradient{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:20px;justify-content:center;align-items:center;width:72px;height:72px;display:inline-flex}.auth-card h1{letter-spacing:-1px;margin-bottom:4px;font-size:32px;font-weight:700}.auth-card .subtitle{color:var(--color-text-secondary);margin-bottom:32px;font-size:15px}.form-card{border-radius:var(--radius-lg);text-align:left;background:#1e293bcc;border:1px solid #47556980;padding:24px}.form-group{margin-bottom:16px}.form-group label{color:var(--color-text-secondary);margin-bottom:6px;margin-left:4px;font-size:13px;display:block}.input-wrapper{border-radius:var(--radius-sm);border:1px solid var(--color-border);background:#0f172a99;align-items:center;height:48px;display:flex;overflow:hidden}.input-wrapper .input-icon{color:var(--color-text-secondary);align-items:center;padding:0 12px;display:flex}.input-wrapper 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4px);left:0;right:0;overflow:hidden}.preset-option{cursor:pointer;border-bottom:1px solid #ffffff0d;padding:12px 16px;transition:background .1s}.preset-option:hover{background:#ffffff0d}.preset-option.active{background:#6366f126}.preset-option .preset-name{font-size:15px;font-weight:500}.preset-option.active .preset-name{color:var(--color-accent)}.preset-option .preset-desc{color:var(--color-text-secondary);margin-top:2px;font-size:13px}.json-textarea{background:var(--color-bg-default);border:1px solid var(--color-border);border-radius:var(--radius-sm);width:100%;min-height:300px;color:var(--color-text);font-family:var(--font-mono);resize:vertical;outline:none;flex:1;padding:16px;font-size:14px}.json-textarea:focus{border-color:var(--color-accent)}.json-textarea.error{border-color:var(--color-error)}.output-container{border:1px solid 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0}.data-row:last-child{border-bottom:none}.data-label{color:var(--color-text-secondary);margin-bottom:4px;font-size:13px}.data-value{font-size:15px;font-weight:500}.detection-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.detection-badge{border-radius:999px;align-items:center;gap:4px;padding:4px 12px;font-size:13px;font-weight:600;display:inline-flex}.confidence-badge{border-radius:999px;padding:4px 8px;font-size:11px;font-weight:600}.detection-detail{margin-top:12px;font-size:15px;font-weight:500}.indicators-list{margin-top:12px}.indicator-row{align-items:flex-start;gap:8px;padding:4px 0;display:flex}.indicator-dot{border-radius:50%;width:6px;min-width:6px;height:6px;margin-top:6px}.indicator-text{color:var(--color-text-secondary);font-size:13px}.breakdown-card{margin-bottom:16px}.breakdown-title{margin-bottom:12px;font-size:15px;font-weight:600}.breakdown-row{justify-content:space-between;align-items:center;padding:6px 0;display:flex}.breakdown-row 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input{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);text-align:center;width:48px;height:56px;color:var(--color-text);outline:none;font-size:24px;font-weight:600}.code-inputs input:focus,.code-inputs input.filled{border-color:var(--color-accent)}.help-container{text-align:left;align-items:flex-start;gap:8px;margin-top:32px;padding:0 16px;display:flex}.help-container p{color:var(--color-text-secondary);font-size:13px}.settings-toast{border-radius:var(--radius-lg);z-index:1000;align-items:center;gap:8px;padding:12px 20px;font-size:14px;font-weight:500;animation:.25s ease-out toast-slide-up;display:flex;position:fixed;bottom:32px;left:50%;transform:translate(-50%);box-shadow:0 4px 16px #0000004d}.settings-toast-success{background:var(--color-success);color:#fff}.settings-toast-error{background:var(--color-error);color:#fff}@keyframes toast-slide-up{0%{opacity:0;transform:translate(-50%)translateY(12px)}to{opacity:1;transform:translate(-50%)translateY(0)}}.device-check-page{flex-direction:column;gap:16px;display:flex}.speed-results{grid-template-columns:1fr 1fr;gap:12px;display:grid}.speed-result-card{background:var(--color-bg-root);border-radius:var(--radius-sm);flex-direction:column;align-items:center;gap:6px;padding:16px;display:flex}.speed-result-label{color:var(--color-text-secondary);font-size:13px;font-weight:500}.speed-result-value{color:var(--color-text);font-size:22px;font-weight:700}.browser-info-group{border-bottom:1px solid var(--color-border);padding:10px 0}.browser-info-group:last-child{border-bottom:none}.browser-info-label{color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;font-size:12px}.browser-info-ua{font-family:var(--font-mono);color:var(--color-text);word-break:break-all;background:var(--color-bg-root);border-radius:var(--radius-sm);padding:10px 12px;font-size:12px;line-height:1.6}.browser-info-grid{grid-template-columns:1fr 1fr;gap:2px;display:grid}.browser-info-item{align-items:flex-start;gap:10px;padding:10px 4px;display:flex}.browser-info-item>svg{color:var(--color-accent);flex-shrink:0;margin-top:2px}.browser-info-item-label{color:var(--color-text-secondary);font-size:12px}.browser-info-item-value{color:var(--color-text);font-size:14px;font-weight:500}@media (width<=640px){.app-content{padding:16px}.auth-features{flex-direction:column;gap:8px}.feature-divider{display:none}.button-row{flex-wrap:wrap}.browser-info-grid,.speed-results{grid-template-columns:1fr}}