Initial local LLM web app

styles.css

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+:root {
+  --bg: #f7f7f4;
+  --panel: #ffffff;
+  --sidebar: #171717;
+  --sidebar-soft: #242424;
+  --text: #202123;
+  --muted: #6f6f6f;
+  --line: #deded8;
+  --accent: #10a37f;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+body {
+  margin: 0;
+  min-height: 100vh;
+  display: grid;
+  grid-template-columns: 260px 1fr;
+  color: var(--text);
+  background: var(--bg);
+  font-family: Arial, "Malgun Gothic", sans-serif;
+}
+
+.sidebar {
+  min-height: 100vh;
+  padding: 12px;
+  color: white;
+  background: var(--sidebar);
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.new-chat,
+.history-item {
+  width: 100%;
+  min-height: 42px;
+  border: 1px solid #3a3a3a;
+  border-radius: 8px;
+  color: white;
+  background: transparent;
+  text-align: left;
+  padding: 0 12px;
+  font-size: 14px;
+  cursor: pointer;
+}
+
+.history {
+  flex: 1;
+}
+
+.history-item.active {
+  background: var(--sidebar-soft);
+}
+
+.model {
+  padding: 12px;
+  border-top: 1px solid #333;
+  color: #cfcfcf;
+  font-size: 13px;
+}
+
+.chat-shell {
+  min-width: 0;
+  min-height: 100vh;
+  display: grid;
+  grid-template-rows: 58px 1fr auto;
+}
+
+.topbar {
+  display: flex;
+  align-items: center;
+  padding: 0 24px;
+  border-bottom: 1px solid var(--line);
+  background: rgba(255, 255, 255, 0.8);
+}
+
+.topbar div {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.topbar span {
+  color: var(--muted);
+  font-size: 13px;
+}
+
+.messages {
+  width: min(860px, 100%);
+  margin: 0 auto;
+  padding: 28px 20px 120px;
+  overflow: auto;
+}
+
+.message {
+  display: grid;
+  grid-template-columns: 34px 1fr;
+  gap: 14px;
+  margin: 0 0 24px;
+}
+
+.avatar {
+  width: 34px;
+  height: 34px;
+  border-radius: 6px;
+  display: grid;
+  place-items: center;
+  color: white;
+  background: var(--accent);
+  font-weight: 700;
+}
+
+.message.user .avatar {
+  background: #565869;
+}
+
+.bubble {
+  max-width: 100%;
+  padding: 6px 0;
+  line-height: 1.65;
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+}
+
+.composer {
+  position: fixed;
+  left: 260px;
+  right: 0;
+  bottom: 0;
+  display: grid;
+  grid-template-columns: 1fr auto;
+  gap: 10px;
+  width: min(860px, calc(100% - 300px));
+  margin: 0 auto;
+  padding: 18px 20px 22px;
+  background: linear-gradient(to top, var(--bg) 80%, rgba(247, 247, 244, 0));
+}
+
+textarea {
+  min-height: 52px;
+  max-height: 180px;
+  resize: none;
+  border: 1px solid var(--line);
+  border-radius: 8px;
+  padding: 14px 16px;
+  font: inherit;
+  line-height: 1.4;
+  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
+}
+
+textarea:focus {
+  border-color: var(--accent);
+  outline: none;
+}
+
+#sendButton {
+  align-self: end;
+  min-width: 72px;
+  height: 52px;
+  border: 0;
+  border-radius: 8px;
+  color: white;
+  background: var(--accent);
+  font-weight: 700;
+  cursor: pointer;
+}
+
+#sendButton:disabled {
+  cursor: wait;
+  opacity: 0.6;
+}
+
+@media (max-width: 720px) {
+  body {
+    grid-template-columns: 1fr;
+  }
+
+  .sidebar {
+    display: none;
+  }
+
+  .composer {
+    left: 0;
+    width: 100%;
+  }
+}