:root {
  --bg: #14161a;
  --bg-2: #1b1e24;
  --bg-3: #22252b;
  --border: #2e323a;
  --fg: #d7dae0;
  --fg-dim: #8b919c;
  --accent: #6ea8fe;
  --ok: #3fb96b;
  --warn: #e0b34c;
  --err: #e05c5c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  font: inherit;
  color: var(--fg);
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: #10131a; border-color: transparent; font-weight: 600; }

input, textarea {
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
}
input:focus, textarea:focus { outline: none; border-color: var(--accent); }

header.top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}
header.top h1 { font-size: 15px; margin: 0; font-weight: 600; }
header.top .spacer { flex: 1; }
header.top .user { color: var(--fg-dim); font-size: 13px; }

/* ---- login ---- */
.login-wrap { display: grid; place-items: center; min-height: 100vh; }
.login-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card h1 { margin: 0 0 6px; font-size: 18px; }
.login-card .error { color: var(--err); font-size: 13px; min-height: 16px; margin: 0; }

/* ---- overview ---- */
main.overview { flex: 1; min-width: 0; overflow-y: auto; padding: 24px; }
main.overview #projects { max-width: 900px; margin: 0 auto; }
.project {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 16px;
}
.project .head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.project .head h2 { margin: 0; font-size: 16px; }
.project .head .spacer { flex: 1; }
.apps { display: flex; flex-wrap: wrap; gap: 10px; }
.app-card {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
}
.app-card a.open { font-weight: 600; }
.app-card .direct { color: var(--fg-dim); font-size: 12px; }
.empty { color: var(--fg-dim); font-size: 14px; }

.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--fg-dim); flex-shrink: 0; }
.dot.on { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.off { background: var(--err); }
.dot.dim { background: var(--border); } /* agent not running — calm, matches .lamp.off */
.dot.ext { background: var(--accent); }

/* ---- agent activity lamps: spin = working, blue = waiting/unread, gray = waiting/read ---- */
.lamp { display: inline-block; width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.lamp.off { background: var(--border); }
.lamp.unread { background: var(--accent); }
.lamp.read { background: var(--fg-dim); }
.lamp.spin {
  background: transparent;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  animation: lamp-spin 0.9s linear infinite;
}
@keyframes lamp-spin { to { transform: rotate(360deg); } }

/* ---- app shell ---- */
body.shell { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
.shell-main { flex: 1; display: flex; min-height: 0; }
.shell-main iframe { flex: 1; border: none; background: #fff; }

/* ---- left navigation rail (projects → apps) ---- */
.sidebar {
  width: 210px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: var(--bg-2);
  min-height: 0;
}
.sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  width: 100%;
  padding: 7px 10px;
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: var(--bg-2);
  color: var(--fg-dim);
  font-size: 12.5px;
  font-weight: 600;
}
.sidebar-toggle:hover { color: var(--fg); }
.sidebar-toggle .chev { font-weight: 400; }
.sidebar-tree { flex: 1; overflow-y: auto; padding: 6px; }
/* Straddles the sidebar's right border (negative margins keep layout width 0). */
.sidebar-resizer {
  width: 7px;
  margin: 0 -3px;
  flex-shrink: 0;
  cursor: col-resize;
  z-index: 5;
  touch-action: none;
}
.sidebar-resizer:hover, .sidebar-resizer.dragging { background: var(--accent); opacity: 0.5; }
/* Collapsed: a thin rail with the vertical toggle only (!important beats the
   inline width set by the resizer). */
.sidebar.collapsed { width: 32px !important; }
.sidebar.collapsed .sidebar-tree { display: none; }
.sidebar.collapsed .sidebar-toggle {
  display: block;
  flex: 1;
  writing-mode: vertical-rl;
  text-align: center;
  border-bottom: none;
  padding: 10px 0;
}

.side-project-head { display: flex; align-items: center; gap: 2px; }
.side-proj-toggle {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 6px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--fg);
  font-size: 13px;
  text-align: left;
}
.side-proj-toggle:hover { background: var(--bg-3); }
.side-proj-toggle .caret { color: var(--fg-dim); font-size: 10px; transition: transform 0.12s; }
.side-project.open .caret { transform: rotate(90deg); }
.side-proj-toggle .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-add {
  flex-shrink: 0;
  padding: 2px 7px;
  font-size: 14px;
  line-height: 1;
  color: var(--fg-dim);
  background: transparent;
  border: none;
  border-radius: 6px;
}
.side-add:hover:not(:disabled) { background: var(--bg-3); color: var(--fg); }
.side-add:disabled { opacity: 0.4; cursor: default; }
.side-apps { display: none; margin: 1px 0 4px 15px; }
.side-project.open .side-apps { display: block; }
.side-app {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 8px;
  border-radius: 6px;
  color: var(--fg-dim);
  font-size: 12.5px;
}
.side-app:hover { background: var(--bg-3); text-decoration: none; }
.side-app.active { background: var(--bg-3); color: var(--fg); }
.side-app .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-apps .empty, .sidebar-tree > .empty { padding: 4px 8px; font-size: 12.5px; }
/* Drag handle straddling the chat panel's left border (negative margins keep
   the layout width at zero). */
.chat-resizer {
  width: 7px;
  margin: 0 -3px;
  flex-shrink: 0;
  cursor: col-resize;
  z-index: 5;
  touch-action: none;
}
.chat-resizer:hover, .chat-resizer.dragging { background: var(--accent); opacity: 0.5; }
aside.chat[hidden] { display: none; }
aside.chat {
  width: 380px;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border);
  background: var(--bg-2);
  min-height: 0;
}
/* Collapse the chat to a thin rail with a vertical toggle (mirror of the
   sidebar). !important beats the inline width set by the resizer. */
.chat-collapse {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  width: 100%;
  padding: 6px 10px;
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: var(--bg-2);
  color: var(--fg-dim);
  font-size: 13px;
}
.chat-collapse:hover { color: var(--fg); }
.chat-collapse .lbl { display: none; }
aside.chat.collapsed { width: 34px !important; }
aside.chat.collapsed > *:not(.chat-collapse) { display: none; }
aside.chat.collapsed .chat-collapse {
  display: block;
  flex: 1;
  writing-mode: vertical-rl;
  text-align: center;
  border-bottom: none;
  padding: 10px 0;
  font-weight: 600;
}
aside.chat.collapsed .chat-collapse .lbl { display: inline; }

/* Compact panel header on pages without the app top bar (the overview). */
.chat-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.chat-head .spacer { flex: 1; }
.chat-head button { padding: 3px 8px; font-size: 12px; }
.chat-head #chat-context { font-size: 12.5px; }
.chat-tabs { display: flex; flex-wrap: wrap; gap: 4px; padding: 8px 8px 0; border-bottom: 1px solid var(--border); }
.chat-tab {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 12.5px;
  border-radius: 6px 6px 0 0;
  border: 1px solid var(--border);
  border-bottom: none;
  background: var(--bg-2);
  color: var(--fg-dim);
}
.chat-tab .lamp { margin-right: 6px; }
.chat-tab.active { background: var(--bg-3); color: var(--fg); }
.chat-tab.add { color: var(--accent); padding: 4px 8px; }
.chat-tab .close { margin-left: 7px; color: var(--fg-dim); }
.chat-tab .close:hover { color: var(--err); }
.messages-wrap { position: relative; flex: 1; min-height: 0; display: flex; }
.chat .messages { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.jump-bottom {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  font-size: 12px;
  color: var(--fg);
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  cursor: pointer;
}
.jump-bottom:hover { background: var(--bg-2); }
.jump-bottom[hidden] { display: none; }
.msg { border-radius: 8px; padding: 8px 10px; font-size: 13.5px; white-space: pre-wrap; word-break: break-word; }
.msg.user { background: #24344d; align-self: flex-end; max-width: 92%; }
.msg.assistant { background: var(--bg-3); align-self: flex-start; max-width: 92%; }
.msg.tool { color: var(--fg-dim); font-size: 12px; font-family: ui-monospace, monospace; padding: 2px 10px; }
.msg.system { color: var(--warn); font-size: 12.5px; text-align: center; }
.msg.pending { opacity: 0.55; }
/* Rendered Markdown/LaTeX message bodies. */
.msg.md { white-space: normal; }
.msg.md > :first-child { margin-top: 0; }
.msg.md > :last-child { margin-bottom: 0; }
.msg.md p { margin: 0 0 6px; }
.msg.md h3, .msg.md h4, .msg.md h5 { margin: 8px 0 4px; line-height: 1.25; }
.msg.md h3 { font-size: 15px; }
.msg.md h4 { font-size: 14px; }
.msg.md h5 { font-size: 13px; }
.msg.md ul, .msg.md ol { margin: 4px 0; padding-left: 20px; }
.msg.md li { margin: 1px 0; }
.msg.md a { color: var(--accent); }
.msg.md code {
  font-family: ui-monospace, monospace;
  font-size: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 4px;
}
.msg.md pre.capps-code {
  margin: 6px 0;
  padding: 8px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow-x: auto;
}
.msg.md pre.capps-code code { border: none; background: none; padding: 0; }
.msg.md blockquote {
  margin: 4px 0;
  padding: 0 0 0 10px;
  border-left: 3px solid var(--border);
  color: var(--fg-dim);
}
.msg.md hr { border: none; border-top: 1px solid var(--border); margin: 8px 0; }
.msg.md table.capps-table { border-collapse: collapse; margin: 6px 0; font-size: 12.5px; display: block; overflow-x: auto; }
.msg.md table.capps-table th, .msg.md table.capps-table td { border: 1px solid var(--border); padding: 3px 8px; text-align: left; }
.msg.md table.capps-table th { background: var(--bg-3); font-weight: 600; }
.msg.md .katex-display { margin: 6px 0; overflow-x: auto; overflow-y: hidden; }
.capps-math-raw.block { display: block; margin: 6px 0; }
.activity-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  font-size: 12px;
  color: var(--fg-dim);
  border-top: 1px solid var(--border);
}
.activity-bar[hidden] { display: none; }
.chat form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--border); }
.chat textarea { flex: 1; resize: none; max-height: 140px; }
.banner {
  display: none;
  background: #4d2a2a;
  color: #f0c0c0;
  text-align: center;
  padding: 6px;
  font-size: 13px;
}
.banner.show { display: block; }