Making the code base easy to read and maintain and making it a oneline install

assets/ui.css

@@ -0,0 +1,134 @@
+@keyframes sxng-fade-in-up {
+    0% { opacity: 0; transform: translateY(10px); }
+    100% { opacity: 1; transform: translateY(0); }
+}
+.sxng-footer {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    margin-top: 1rem;
+    opacity: 0;
+    animation: sxng-fade-in-up 0.5s ease-out forwards;
+}
+.sxng-btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 32px;
+    height: 32px;
+    padding: 0;
+    border: none;
+    border-radius: 4px;
+    background: var(--color-sidebar-bg, #424247);
+    color: var(--color-search-url, #bbb);
+    cursor: pointer;
+    vertical-align: middle;
+    line-height: 1.4;
+}
+.sxng-btn:hover {
+    background: var(--color-search-url, #303033);
+    color: var(--color-sidebar-bg, #bbb);
+}
+.sxng-btn svg { width: 18px; height: 18px; fill: currentColor; }
+.sxng-input-wrapper {
+    flex-grow: 1;
+    display: flex;
+    height: 32px;
+    align-items: center;
+    margin: 0 0.5rem;
+    position: relative;
+}
+.sxng-input {
+    width: 100%;
+    height: -webkit-fill-available;
+    background: var(--color-sidebar-bg, #424247);
+    border: none;
+    color: var(--color-base-font, #cdd6f4);
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    font-size: 0.78em;
+    padding: 3px 8px;
+    border-radius: 4px;
+    line-height: 1.4;
+    vertical-align: middle;
+}
+.sxng-input:focus { outline: none; }
+.sxng-input::placeholder { color: var(--color-base-font, #333); opacity: 0.35; }
+.sxng-input-line {
+    position: absolute;
+    bottom: 0;
+    left: 0;
+    width: 0;
+    height: 1px;
+    background: var(--color-result-link, #5e81ac);
+    transition: width 0.3s ease;
+}
+.sxng-input:focus + .sxng-input-line { width: 100%; }
+.sxng-user-msg {
+    display: block;
+    width: fit-content;
+    max-width: 80%;
+    margin: 0.75rem 0 0.75rem auto;
+    padding: 0.25rem 0.6rem 0.25rem 0;
+    border-right: 2px solid var(--color-result-link, #5e81ac);
+    text-align: right;
+    font-size: 0.85rem;
+    line-height: 1.4;
+    opacity: 0.55;
+    animation: sxng-fade-in-up 0.3s ease-out forwards;
+}
+.sxng-input-wrapper:focus-within { 
+    opacity: 1; 
+    color: var(--color-result-link, #5e81ac); 
+    background: var(--color-base-background-hover, rgba(0,0,0,0.05)) !important;
+}
+.sxng-model-select {
+    appearance: none;
+    -webkit-appearance: none;
+    background: url("data:image/svg+xml;charset=UTF-8,%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22UTF-8%22%3F%3E%0A%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20512%20512%22%3E%0A%3Cg%20fill%3D%22%23aaa%22%3E%0A%3Cpolygon%20points%3D%22128%2C192%20256%2C320%20384%2C192%22%2F%3E%3C%2Fg%3E%0A%3C%2Fsvg%3E") calc(100% + 2rem) / 1rem no-repeat content-box border-box;
+    background-color: #424247;
+    text-overflow: ellipsis;
+    border-width: 0 2rem 0 0;
+    border-color: transparent;
+    border-radius: 5px;
+    outline: none;
+    height: 32px;
+    color: var(--color-search-url, #bbb);
+    font-size: .9rem;
+    padding: 1px 10px 1px 10px !important;
+    margin: 0;
+    cursor: pointer;
+    display: none;
+    max-width: 8rem;
+    vertical-align: middle;
+}
+.sxng-model-select:hover {
+    background-color: #303033;
+    color: var(--color-search-url, #bbb);
+}
+.sxng-reasoning {
+    margin: 0.5rem 0; padding: 0.5rem;
+    border-left: 2px solid var(--color-result-link, #5e81ac);
+    background: var(--color-base-background-hover, rgba(0,0,0,0.03));
+    font-size: 0.85rem; opacity: 0.7; transition: opacity 0.2s;
+}
+.sxng-reasoning:hover { opacity: 1; }
+.sxng-reasoning summary { cursor: pointer; font-weight: bold; color: var(--color-result-link, #5e81ac); }
+.sxng-thought-content { margin-top: 0.5rem; white-space: pre-wrap; font-family: monospace; }
+.sxng-citation-footer {
+    margin-top: 0.75rem;
+    padding-top: 0.5rem;
+    border-top: 1px solid var(--color-sidebar-bg, #424247);
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.4rem 0.75rem;
+}
+.sxng-citation-item a {
+    font-size: 0.75em;
+    color: var(--color-result-link, #5e81ac);
+    text-decoration: none;
+    opacity: 0.75;
+}
+.sxng-citation-item a:hover {
+    opacity: 1;
+    text-decoration: underline;
+}