body
{
   background-color: #FFFFFF;
   color: #000000;
   font-family: Arial;
   font-weight: normal;
   font-size: 13px;
   line-height: 1.1875;
   margin: 0;
   padding: 0;
}
  @import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Exo+2:wght@300;400;600;700&display=swap');

  :root {
    --bg: #0a0c10;
    --panel: #0f1218;
    --border: #1e2530;
    --border-bright: #2a3545;
    --accent: #00d4ff;
    --accent2: #ff6b35;
    --accent3: #7fff6b;
    --text: #c8d8e8;
    --text-dim: #5a7090;
    --text-bright: #e8f4ff;
    --code-bg: #080a0e;
    --hover: #151c28;
    --sel: #0a2040;
    --sel-border: #0066aa;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Exo 2', sans-serif;
    font-size: 13px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  /* TOPBAR */
  #topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 14px;
    background: var(--panel);
    border-bottom: 1px solid var(--border-bright);
    flex-shrink: 0;
  }
  #topbar .logo {
    font-family: 'Share Tech Mono', monospace;
    color: var(--accent);
    font-size: 15px;
    letter-spacing: 2px;
    white-space: nowrap;
  }
  #topbar .logo span { color: var(--accent2); }

  #apiKeyWrap {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
  }
  #apiKeyWrap label { color: var(--text-dim); font-size: 11px; white-space: nowrap; }
  #apiKey {
    flex: 1;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    padding: 4px 8px;
    outline: none;
    transition: border-color 0.2s;
  }
  #apiKey:focus { border-color: var(--accent); }

  .btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    letter-spacing: 1px;
    transition: all 0.15s;
    white-space: nowrap;
  }
  .btn:hover { background: var(--accent); color: #000; }
  .btn.orange { border-color: var(--accent2); color: var(--accent2); }
  .btn.orange:hover { background: var(--accent2); color: #000; }
  .btn.green { border-color: var(--accent3); color: var(--accent3); }
  .btn.green:hover { background: var(--accent3); color: #000; }
  .btn:disabled { opacity: 0.35; cursor: not-allowed; }
  .btn:disabled:hover { background: transparent; color: inherit; }

  /* MAIN LAYOUT */
  #main {
    display: flex;
    flex: 1;
    overflow: hidden;
  }

  /* FILE TREE */
  #treePanel {
    width: 220px;
    min-width: 160px;
    background: var(--panel);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
  }
  #treeHeader {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
  }
  #treePath {
    font-size: 10px;
    color: var(--text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
  }
  #treeList {
    flex: 1;
    overflow-y: auto;
    padding: 4px 0;
  }
  #treeList::-webkit-scrollbar { width: 4px; }
  #treeList::-webkit-scrollbar-track { background: transparent; }
  #treeList::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 2px; }

  .tree-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    cursor: pointer;
    user-select: none;
    transition: background 0.1s;
    font-size: 12px;
    color: var(--text);
  }
  .tree-item:hover { background: var(--hover); }
  .tree-item.selected { background: var(--sel); border-left: 2px solid var(--sel-border); }
  .tree-item.folder { color: var(--accent); }
  .tree-item .icon { font-size: 10px; flex-shrink: 0; }
  .tree-item .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .tree-item.indent1 { padding-left: 22px; }
  .tree-item.indent2 { padding-left: 34px; }
  .tree-item.indent3 { padding-left: 46px; }

  /* EDITOR */
  #editorPanel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-right: 1px solid var(--border);
  }
  #editorHeader {
    padding: 6px 12px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--panel);
    flex-shrink: 0;
  }
  #fileName {
    font-family: 'Share Tech Mono', monospace;
    color: var(--accent);
    font-size: 12px;
    flex: 1;
  }
  #editorArea {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    background: var(--code-bg);
  }
  #editorArea::-webkit-scrollbar { width: 6px; }
  #editorArea::-webkit-scrollbar-track { background: transparent; }
  #editorArea::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }

  #codeView {
    font-family: 'Share Tech Mono', monospace;
    font-size: 12px;
    line-height: 1.6;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-all;
    outline: none;
    min-height: 100%;
    tab-size: 4;
  }
  #codeView[contenteditable="true"] { cursor: text; }

  .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-dim);
    gap: 10px;
    text-align: center;
  }
  .empty-state .big { font-size: 40px; }
  .empty-state p { font-size: 12px; }

  /* CHAT PANEL */
  #chatPanel {
    width: 380px;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    background: var(--panel);
    flex-shrink: 0;
  }
  #chatHeader {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
  }
  #chatHeader .title {
    font-family: 'Share Tech Mono', monospace;
    color: var(--accent);
    font-size: 12px;
    flex: 1;
  }
  #chatMessages {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  #chatMessages::-webkit-scrollbar { width: 4px; }
  #chatMessages::-webkit-scrollbar-track { background: transparent; }
  #chatMessages::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 2px; }

  .msg {
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 12px;
    line-height: 1.5;
    max-width: 100%;
  }
  .msg.user {
    background: #0d2040;
    border: 1px solid #1a3a60;
    color: var(--text-bright);
    align-self: flex-end;
  }
  .msg.ai {
    background: #0d1a10;
    border: 1px solid #1a3a20;
    color: #b0e8b8;
    align-self: flex-start;
    white-space: pre-wrap;
    word-break: break-word;
  }
  .msg.sys {
    background: #1a1000;
    border: 1px solid #3a2800;
    color: #d0a040;
    font-size: 11px;
    align-self: center;
    font-family: 'Share Tech Mono', monospace;
  }
  .msg.err {
    background: #1a0808;
    border: 1px solid #501010;
    color: #ff8080;
    font-size: 11px;
    align-self: center;
  }

  #chatInput {
    flex-shrink: 0;
    border-top: 1px solid var(--border);
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  #quickBtns {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
  }
  .qbtn {
    background: var(--code-bg);
    border: 1px solid var(--border-bright);
    color: var(--text-dim);
    padding: 3px 8px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 10px;
    font-family: 'Share Tech Mono', monospace;
    transition: all 0.15s;
  }
  .qbtn:hover { border-color: var(--accent); color: var(--accent); }

  #promptWrap {
    display: flex;
    gap: 6px;
  }
  #prompt {
    flex: 1;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: 'Exo 2', sans-serif;
    font-size: 12px;
    padding: 6px 8px;
    outline: none;
    resize: none;
    height: 60px;
    transition: border-color 0.2s;
  }
  #prompt:focus { border-color: var(--accent); }

  #sendBtn {
    align-self: flex-end;
  }

  /* File include option */
  #includeOpts {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
  }
  .opt-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    color: var(--text-dim);
    cursor: pointer;
  }
  .opt-label input { accent-color: var(--accent); }

  /* Token count */
  #tokenInfo {
    font-size: 10px;
    color: var(--text-dim);
    font-family: 'Share Tech Mono', monospace;
  }

  /* Apply code button */
  .apply-btn {
    display: inline-block;
    margin-top: 6px;
    padding: 3px 10px;
    background: transparent;
    border: 1px solid var(--accent3);
    color: var(--accent3);
    border-radius: 3px;
    cursor: pointer;
    font-size: 10px;
    font-family: 'Share Tech Mono', monospace;
    transition: all 0.15s;
  }
  .apply-btn:hover { background: var(--accent3); color: #000; }

  /* Status bar */
  #statusBar {
    padding: 3px 12px;
    border-top: 1px solid var(--border);
    background: var(--panel);
    font-size: 10px;
    color: var(--text-dim);
    font-family: 'Share Tech Mono', monospace;
    display: flex;
    gap: 12px;
    flex-shrink: 0;
  }
  #statusBar span { color: var(--accent); }

  /* Spinner */
  .spinner {
    display: inline-block;
    width: 10px; height: 10px;
    border: 2px solid transparent;
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* Diff highlight */
  .diff-add { color: #6aff8a; }
  .diff-rem { color: #ff6a6a; text-decoration: line-through; opacity: 0.6; }

  .loading-dots::after {
    content: '...';
    animation: dots 1.2s steps(4, end) infinite;
  }
  @keyframes dots {
    0%, 100% { content: ''; }
    25% { content: '.'; }
    50% { content: '..'; }
    75% { content: '...'; }
  }