:root {
  --bg: #1e1e1e;
  --bg-deep: #181818;
  --bg-panel: #252526;
  --bg-sidebar: #181818;
  --bg-activity: #181818;
  --bg-hover: #2a2d2e;
  --bg-active: #37373d;
  --bg-tab: #2d2d2d;
  --bg-tab-active: #1e1e1e;
  --border: #2b2b2b;
  --border-strong: #3c3c3c;
  --text: #cccccc;
  --text-bright: #e8e8e8;
  --text-dim: #9d9d9d;
  --text-faint: #6e6e6e;
  --accent: #0078d4;
  --accent-soft: #264f78;
  --green: #89d185;
  --green-btn: #3ecf8e;
  --chat-w: 380px;
  --sidebar-w: 240px;
  --activity-w: 48px;
  --title-h: 36px;
  --term-h: 140px;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "Cascadia Code", ui-monospace, monospace;
}

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

html, body {
  height: 100%;
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-rows: var(--title-h) minmax(0, 1fr) auto;
  height: 100vh;
  height: 100dvh;
}

/* Title bar — Cursor-like centered search */
.titlebar {
  display: grid;
  grid-template-columns: 160px 1fr 160px;
  align-items: center;
  padding: 0 10px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
  z-index: 5;
}

.traffic { display: flex; gap: 7px; align-items: center; }
.dot { width: 10px; height: 10px; border-radius: 50%; opacity: 0.85; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.brand {
  display: none;
}
.brand-mark { width: 16px; height: 16px; color: var(--green-btn); }
.brand-name { font-weight: 650; font-size: 13px; letter-spacing: -0.02em; color: var(--text-bright); }

.titlebar-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.titlebar-center { display: flex; justify-content: center; }
.titlebar-actions { display: flex; justify-content: flex-end; gap: 6px; }

.cmd-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: min(420px, 50vw);
  height: 26px;
  padding: 0 12px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: #2a2a2a;
  color: var(--text-dim);
  font: 500 12px/1 var(--font);
  cursor: pointer;
}
.cmd-chip:hover { background: #323232; color: var(--text); }
.cmd-chip kbd {
  margin-left: 8px;
  padding: 1px 5px;
  border-radius: 3px;
  background: #1e1e1e;
  border: 1px solid var(--border-strong);
  color: var(--text-faint);
  font: 500 10px/1 var(--mono);
}

.icon-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  border-radius: 5px;
  padding: 4px 9px;
  font: 600 11px/1 var(--font);
  cursor: pointer;
}
.icon-btn:hover { color: var(--text-bright); background: var(--bg-hover); }
.icon-btn.ghost { border-color: transparent; }

/* Workspace */
.workspace {
  display: grid;
  grid-template-columns: var(--activity-w) var(--sidebar-w) minmax(0, 1fr) var(--chat-w);
  min-height: 0;
  overflow: hidden;
}
.workspace.chat-collapsed {
  grid-template-columns: var(--activity-w) var(--sidebar-w) minmax(0, 1fr) 0fr;
}
.workspace.chat-collapsed .chat {
  visibility: hidden;
  overflow: hidden;
  border: 0;
  width: 0;
  padding: 0;
  min-width: 0;
}

.activity {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 0;
  background: var(--bg-activity);
  border-right: 1px solid var(--border);
}
.act {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: #858585;
  cursor: pointer;
  display: grid;
  place-items: center;
  position: relative;
}
.act svg { width: 22px; height: 22px; }
.act:hover { color: #fff; }
.act.active { color: #fff; }
.act.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: #fff;
  border-radius: 0 2px 2px 0;
}
.act-spacer { flex: 1; }

.sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  overflow: auto;
  min-width: 0;
}
.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 8px;
  font: 700 11px/1 var(--font);
  letter-spacing: 0.06em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.project-name {
  padding: 2px 10px 8px 14px;
  font: 600 12px/1.3 var(--font);
  color: var(--text-bright);
}
.file-tree { padding: 0 4px 16px; }

.tree-folder, .tree-file {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  padding: 3px 8px;
  border-radius: 0;
  font: 400 13px/20px var(--font);
  cursor: pointer;
}
.tree-folder { font-weight: 500; padding-left: 8px; }
.tree-file { padding-left: 28px; color: var(--text); }
.tree-file:hover, .tree-folder:hover { background: var(--bg-hover); }
.tree-file.active {
  background: var(--bg-active);
  color: #fff;
}
.tree-icon {
  width: 14px;
  text-align: center;
  color: var(--text-faint);
  font-size: 11px;
  flex-shrink: 0;
}
.tree-file .tree-icon.ts { color: #519aba; }
.tree-file .tree-icon.css { color: #563d7c; }
.tree-file .tree-icon.md { color: #519aba; }
.tree-file .tree-icon.json { color: #cbcb41; }
.tree-chevron {
  width: 12px;
  color: var(--text-faint);
  font-size: 10px;
  transition: transform .12s;
  display: inline-block;
}
.tree-folder.open .tree-chevron { transform: rotate(90deg); }
.tree-children { display: none; }
.tree-folder.open + .tree-children { display: block; }

.editor-pane {
  display: grid;
  grid-template-rows: 35px minmax(0, 1fr) 22px;
  min-width: 0;
  min-height: 0;
  background: var(--bg);
  overflow: hidden;
}

.tabs {
  display: flex;
  align-items: stretch;
  overflow-x: auto;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}
.tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border: 0;
  border-right: 1px solid var(--border);
  background: var(--bg-tab);
  color: var(--text-dim);
  font: 400 13px/35px var(--font);
  cursor: pointer;
  white-space: nowrap;
}
.tab.active {
  background: var(--bg-tab-active);
  color: var(--text-bright);
  box-shadow: inset 0 -1px 0 var(--accent);
}
.tab .x {
  opacity: 0;
  font-size: 12px;
  width: 16px;
  height: 16px;
  line-height: 16px;
  text-align: center;
  border-radius: 4px;
}
.tab:hover .x, .tab.active .x { opacity: 0.7; }
.tab .x:hover { opacity: 1; background: #444; }

.editor {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  min-height: 0;
  overflow: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.55;
  background: var(--bg);
}
.gutter {
  padding: 12px 10px 12px 0;
  text-align: right;
  color: #6e7681;
  user-select: none;
  background: var(--bg);
  font-variant-numeric: tabular-nums;
}
.code {
  margin: 0;
  padding: 12px 16px 48px;
  outline: none;
  white-space: pre;
  tab-size: 2;
  color: #d4d4d4;
  min-height: 100%;
  caret-color: #fff;
}
.code .kw { color: #569cd6; }
.code .str { color: #ce9178; }
.code .cm { color: #6a9955; font-style: italic; }
.code .fn { color: #dcdcaa; }
.code .num { color: #b5cea8; }
.code .type { color: #4ec9b0; }

.statusline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 10px;
  background: #007acc;
  color: #fff;
  font: 500 11px/22px var(--font);
}
.status-left, .status-right { display: flex; gap: 14px; }
#statusBranch::before { content: "⎇ "; }

/* Chat — Cursor agent panel */
.chat {
  display: grid;
  grid-template-rows: 44px minmax(0, 1fr) auto;
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border);
  min-width: 0;
  overflow: hidden;
}
.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-deep);
}
.chat-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-bright);
}
.pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green-btn);
  box-shadow: 0 0 0 3px rgba(62,207,142,0.18);
}
.chat-msgs {
  overflow: auto;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-sidebar);
}
.msg {
  padding: 0;
  border: 0;
  background: transparent;
  animation: fade .2s ease;
}
@keyframes fade {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}
.msg.user {
  align-self: stretch;
  padding: 10px 12px;
  border-radius: 8px;
  background: #2a2d2e;
  border: 1px solid var(--border-strong);
}
.msg.agent { align-self: stretch; }
.msg-label {
  font: 600 11px/1 var(--font);
  letter-spacing: 0.04em;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.msg p { font-size: 13.5px; line-height: 1.55; color: var(--text-bright); }
.msg pre {
  margin-top: 10px;
  padding: 12px;
  border-radius: 8px;
  background: #1e1e1e;
  border: 1px solid var(--border);
  overflow: auto;
  font: 12.5px/1.45 var(--mono);
  color: #d4d4d4;
}
.chat-input {
  border-top: 1px solid var(--border);
  padding: 12px;
  background: var(--bg-deep);
}
.chat-input textarea {
  width: 100%;
  resize: none;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: #252526;
  color: var(--text-bright);
  padding: 10px 12px;
  font: 400 13px/1.4 var(--font);
  outline: none;
  min-height: 56px;
}
.chat-input textarea:focus { border-color: var(--accent); }
.chat-input textarea::placeholder { color: var(--text-faint); }
.chat-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}
.hint { font-size: 11px; color: var(--text-faint); }
.chat-toolbar button {
  border: 0;
  border-radius: 6px;
  padding: 7px 14px;
  background: var(--green-btn);
  color: #0a1f14;
  font: 700 12px/1 var(--font);
  cursor: pointer;
}
.chat-toolbar button:hover { filter: brightness(1.06); }

/* Terminal */
.terminal {
  border-top: 1px solid var(--border);
  background: #1e1e1e;
  height: var(--term-h);
  display: grid;
  grid-template-rows: 32px minmax(0, 1fr);
  overflow: hidden;
  transition: height .15s ease;
}
.terminal.collapsed { height: 32px; }
.term-head {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 8px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}
.term-tab {
  border: 0;
  background: transparent;
  color: var(--text-faint);
  font: 600 11px/32px var(--font);
  letter-spacing: 0.04em;
  padding: 0 10px;
  cursor: pointer;
}
.term-tab.active {
  color: var(--text-bright);
  box-shadow: inset 0 -2px 0 var(--accent);
}
.term-toggle { margin-left: auto; }
.term-body {
  margin: 0;
  padding: 10px 14px;
  overflow: auto;
  font: 12.5px/1.5 var(--mono);
  color: var(--green);
  background: #1e1e1e;
}

/* Command palette — ONLY visible when not [hidden] */
.cmd-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: grid;
  place-items: start center;
  padding-top: 10vh;
  z-index: 100;
}
.cmd-overlay[hidden] {
  display: none !important;
}
.cmd-palette {
  width: min(540px, 92vw);
  background: #252526;
  border: 1px solid #454545;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0,0,0,0.55);
}
.cmd-palette input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--text-bright);
  padding: 14px 16px;
  font: 500 14px/1.3 var(--font);
  outline: none;
}
#cmdList { list-style: none; max-height: 300px; overflow: auto; padding: 6px; }
#cmdList li button {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 9px 12px;
  border-radius: 5px;
  font: 400 13px/1.2 var(--font);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
}
#cmdList li button:hover,
#cmdList li button.active {
  background: var(--accent-soft);
  color: #fff;
}
#cmdList .meta { color: var(--text-faint); font-size: 11px; }

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: var(--activity-w) 0 minmax(0, 1fr) min(100%, var(--chat-w));
  }
  .sidebar { overflow: hidden; width: 0; border: 0; }
  .cmd-chip { width: min(280px, 40vw); }
}
@media (max-width: 720px) {
  .workspace, .workspace.chat-collapsed {
    grid-template-columns: 0 0 minmax(0, 1fr);
  }
  .activity, .chat { display: none; }
  .titlebar { grid-template-columns: 1fr auto; }
  .traffic { display: none; }
  .titlebar-left { display: none; }
}