*,:before,:after{box-sizing:border-box}:root{--bg:#f0f2f5;--surface:#fff;--text:#1f2328;--text-muted:#656d76;--border:#d8dee4;--border-hover:#b6bec8;--accent:#0969da;--accent-hover:#0550ae;--success:#1a7f37;--error-bg:#fff1f0;--error-border:#ffccc7;--error-text:#cf222e;--shadow-sm:0 1px 2px #1f23280f;--shadow-md:0 4px 12px #1f232814;--radius:10px;--radius-sm:8px}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.5}#root{min-height:100vh}button,input{font:inherit}button{transition:background .15s,border-color .15s,color .15s}input:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.app{max-width:800px;margin:0 auto;padding:40px 20px 64px}.header{margin-bottom:32px}.header h1{letter-spacing:-.02em;margin:0 0 6px;font-size:1.875rem;font-weight:600}.header p{color:var(--text-muted);margin:0;font-size:.9375rem}.search-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);gap:10px;padding:6px;display:flex}.search-form input{border-radius:var(--radius-sm);color:var(--text);background:0 0;border:none;flex:1;padding:11px 14px}.search-form input::placeholder{color:#8c959f}.search-form input:focus{outline:none}.search-form button{border-radius:var(--radius-sm);background:var(--accent);color:#fff;cursor:pointer;white-space:nowrap;border:none;padding:11px 20px;font-weight:500}.search-form button:hover:not(:disabled){background:var(--accent-hover)}.search-form button:disabled{opacity:.65;cursor:not-allowed}.feedback{margin-top:24px}.error-box{border:1px solid var(--error-border);border-radius:var(--radius);background:var(--error-bg);color:var(--error-text);align-items:flex-start;gap:12px;padding:14px 16px;font-size:.9375rem;display:flex}.error-box strong{margin-bottom:2px;font-weight:600;display:block}.empty-state{text-align:center;border:1px dashed var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text-muted);margin-top:24px;padding:32px 20px;font-size:.9375rem}.skeleton-block{margin-top:28px}.skeleton-profile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);gap:20px;padding:24px;display:flex}.skeleton-circle{background:linear-gradient(90deg,#eaeef2 25%,#f6f8fa 50%,#eaeef2 75%) 0 0/200% 100%;border-radius:50%;flex-shrink:0;width:88px;height:88px;animation:1.4s infinite shimmer}.skeleton-lines{flex-direction:column;flex:1;gap:10px;padding-top:8px;display:flex}.skeleton-line{background:linear-gradient(90deg,#eaeef2 25%,#f6f8fa 50%,#eaeef2 75%) 0 0/200% 100%;border-radius:6px;height:14px;animation:1.4s infinite shimmer}.skeleton-line.w60{width:60%}.skeleton-line.w40{width:40%}.skeleton-line.w80{width:80%}.skeleton-repos{flex-direction:column;gap:12px;margin-top:24px;display:flex}.skeleton-card{border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(90deg,#eaeef2 25%,#f6f8fa 50%,#eaeef2 75%) 0 0/200% 100%;height:96px;animation:1.4s infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.profile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);gap:20px;margin-top:28px;padding:24px;display:flex}.avatar{border:3px solid var(--bg);width:88px;height:88px;box-shadow:var(--shadow-sm);border-radius:50%}.profile-body{flex:1;min-width:0}.profile h2{letter-spacing:-.01em;margin:0;font-size:1.375rem;font-weight:600}.username{color:var(--text-muted);margin:4px 0 0;font-size:.9375rem}.bio{color:var(--text);margin:12px 0 0;font-size:.9375rem;line-height:1.6}.stats{flex-wrap:wrap;gap:10px;margin:16px 0 0;padding:0;list-style:none;display:flex}.stats li{border:1px solid var(--border);background:var(--bg);color:var(--text-muted);border-radius:999px;padding:5px 12px;font-size:.8125rem}.stats li span{color:var(--text);font-weight:600}.repos{margin-top:32px}.repos-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.repos-header h3{margin:0;font-size:1.125rem;font-weight:600}.sort-controls{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);gap:6px;padding:4px;display:flex}.sort-controls button{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:6px 12px;font-size:.8125rem;font-weight:500}.sort-controls button:hover{color:var(--text);background:var(--bg)}.sort-controls button.active{background:var(--accent);color:#fff}.sort-controls button.active:hover{background:var(--accent-hover);color:#fff}.repo-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.repo-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:18px 20px;transition:border-color .15s,box-shadow .15s}.repo-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}.repo-top{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.repo-top h4{word-break:break-word;margin:0;font-size:1rem;font-weight:600}.repo-link{color:var(--accent);cursor:pointer;text-decoration:none}.repo-link:hover{text-decoration:underline}.repo-stars{background:var(--bg);color:var(--text-muted);white-space:nowrap;border-radius:999px;flex-shrink:0;padding:3px 10px;font-size:.8125rem}.repo-desc{color:var(--text-muted);margin:10px 0 0;font-size:.9375rem;line-height:1.5}.repo-meta{border-top:1px solid var(--bg);color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:14px;margin-top:14px;padding-top:14px;font-size:.8125rem;display:flex}.language{align-items:center;gap:6px;display:inline-flex}.language-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px}.repo-expanded{margin-top:14px}.repo-languages{border-radius:var(--radius-sm);background:var(--bg);margin-top:14px;padding:14px}.repo-languages h5{text-transform:uppercase;letter-spacing:.03em;color:var(--text-muted);margin:0 0 10px;font-size:.75rem;font-weight:600}.lang-list{margin:0;padding:0;list-style:none}.lang-list li{align-items:center;gap:8px;padding:6px 0;font-size:.875rem;display:flex}.lang-list li+li{border-top:1px solid var(--border)}.lang-name{color:var(--text);flex:1}.lang-percent{color:var(--text-muted);font-size:.8125rem}.lang-status{color:var(--text-muted);margin:0;font-size:.875rem}.repo-card.expanded{border-color:var(--accent)}.repo-toggle{color:var(--accent);cursor:pointer;background:0 0;border:none;margin-top:12px;padding:0;font-size:.8125rem;font-weight:500}.repo-toggle:hover{text-decoration:underline}.repo-details{border-radius:var(--radius-sm);background:var(--bg);grid-template-columns:repeat(2,1fr);gap:12px 16px;margin:14px 0 0;padding:14px;display:grid}.repo-details div{min-width:0}.repo-details dt{text-transform:uppercase;letter-spacing:.03em;color:var(--text-muted);margin:0;font-size:.75rem;font-weight:500}.repo-details dd{color:var(--text);word-break:break-word;margin:4px 0 0;font-size:.9375rem;font-weight:500}.load-more{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:100%;color:var(--text);cursor:pointer;margin-top:16px;padding:12px;font-weight:500;display:block}.load-more:hover:not(:disabled){border-color:var(--border-hover);background:var(--bg)}.load-more:disabled{opacity:.7;cursor:not-allowed}@media (width<=600px){.app{padding:28px 16px 48px}.header h1{font-size:1.5rem}.search-form{flex-direction:column;padding:10px}.search-form button{width:100%}.profile,.skeleton-profile{text-align:center;flex-direction:column;align-items:center}.stats{justify-content:center}.repos-header{flex-direction:column;align-items:stretch}.sort-controls{justify-content:center}.repo-top{flex-direction:column;gap:8px}.repo-stars{align-self:flex-start}.repo-details{grid-template-columns:1fr}}