:root {
  --bg: #0d1117;
  --bg-2: #161b22;
  --bg-3: #1c2230;
  --border: #2b3240;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #4a90d9;
  --green: #3fb950;
  --amber: #d29922;
  --red: #f85149;
  --purple: #a371f7;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand .logo { font-size: 20px; }
.brand h1 { font-size: 18px; margin: 0; letter-spacing: 0.5px; }
.brand .subtitle { color: var(--muted); font-size: 12px; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }

.toggle { display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; font-size: 12px; }
.toggle input { display: none; }
.toggle-track {
  position: relative; width: 38px; height: 20px; border-radius: 20px;
  background: var(--green); border: 1px solid var(--border); transition: background 0.15s;
}
.toggle-thumb {
  position: absolute; top: 1px; left: 19px; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; transition: left 0.15s;
}
.toggle input:not(:checked) + .toggle-track { background: var(--red); }
.toggle input:not(:checked) + .toggle-track .toggle-thumb { left: 1px; }
.toggle-label { color: var(--green); font-weight: 600; letter-spacing: 0.3px; }
.toggle.live .toggle-label { color: var(--red); }
.toggle.live { animation: livepulse 1.6s ease-in-out infinite; }
@keyframes livepulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }
.db-status { font-size: 12px; color: var(--muted); }
.db-status.ok { color: var(--green); }
.db-status.err { color: var(--red); }

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  height: calc(100vh - 53px);
}
.sidebar {
  border-right: 1px solid var(--border);
  background: var(--bg-2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.viewer { overflow-y: auto; padding: 18px; }
.viewer-body { max-width: 1140px; margin: 0 auto; }

/* ---------- run box ---------- */
.run-box { padding: 14px; border-bottom: 1px solid var(--border); }
.run-box > label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.run-row { display: flex; gap: 8px; }
.run-row input {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 8px 10px; font-size: 14px;
}
.checkbox { display: flex; align-items: center; gap: 6px; margin-top: 10px; font-size: 12px; color: var(--muted); text-transform: none; letter-spacing: 0; }

/* ---------- buttons ---------- */
.btn {
  border: 1px solid var(--border); background: var(--bg-3); color: var(--text);
  border-radius: 8px; padding: 8px 12px; cursor: pointer; font-size: 13px;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.1); }
.btn.ghost { background: transparent; }
.btn.approve { background: var(--green); border-color: var(--green); color: #07210f; font-weight: 600; }
.btn.reject { background: transparent; border-color: var(--red); color: var(--red); }
.btn.danger { background: transparent; border-color: var(--border); color: var(--muted); }
.btn.danger:hover { border-color: var(--red); color: var(--red); }
.btn.small { padding: 5px 9px; font-size: 12px; }

/* ---------- inbox controls ---------- */
.inbox-controls { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
#inbox-search {
  width: 100%; box-sizing: border-box; padding: 8px 10px; font-size: 13px;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg-3); color: var(--text);
}
#inbox-search:focus { outline: none; border-color: var(--accent); }

/* ---------- tabs ---------- */
.tabs { display: flex; border-bottom: 1px solid var(--border); }
.tab {
  flex: 1; background: transparent; border: none; color: var(--muted);
  padding: 12px 8px; cursor: pointer; font-size: 13px; font-weight: 600;
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.pill {
  display: inline-block; min-width: 18px; padding: 1px 6px; border-radius: 10px;
  background: var(--bg-3); color: var(--muted); font-size: 11px; text-align: center;
}
.tab.active .pill { background: var(--accent); color: #fff; }

.tab-panel { display: none; flex: 1; overflow-y: auto; }
.tab-panel.active { display: block; }
.list { padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.inbox-filter { padding: 10px 12px 0; color: var(--muted); }

/* ---------- cards ---------- */
.card {
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px 12px; cursor: pointer; transition: border-color 0.15s;
}
.card:hover { border-color: var(--accent); }
.card .card-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.card .tid { font-weight: 700; }
.card .state { font-size: 11px; color: var(--muted); margin-top: 4px; word-break: break-all; }
.card .gate-when { font-size: 11px; color: var(--muted); margin-top: 4px; }
.card .lines { margin-top: 8px; font-size: 12px; color: var(--muted); display: flex; flex-direction: column; gap: 2px; }
.card .lines code { color: var(--text); }
.card-actions { display: flex; gap: 6px; margin-top: 10px; }

.tag {
  display: inline-block; font-size: 10px; font-weight: 700; padding: 2px 7px;
  border-radius: 6px; letter-spacing: 0.5px;
}
.tag.g-human { background: rgba(248,81,73,0.15); color: var(--red); }
.tag.g-auto { background: rgba(74,144,217,0.15); color: var(--accent); }
.tag.g-tech { background: rgba(163,113,247,0.15); color: var(--purple); }
.tag.g-none { background: rgba(139,148,158,0.15); color: var(--muted); }
.tag.wait { background: rgba(210,153,34,0.15); color: var(--amber); }

/* ---------- viewer ---------- */
.viewer-empty { display: flex; height: 100%; align-items: center; justify-content: center; }
.empty-card { max-width: 460px; text-align: center; color: var(--muted); }
.empty-card h2 { color: var(--text); font-weight: 600; }
.hidden { display: none !important; }

.viewer-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
.viewer-head h2 { margin: 0; }
.muted { color: var(--muted); }
.run-badge {
  padding: 6px 12px; border-radius: 20px; font-size: 12px; font-weight: 700;
  background: var(--bg-3); border: 1px solid var(--border);
}
.run-badge.running { background: rgba(210,153,34,0.15); color: var(--amber); border-color: var(--amber); }
.run-badge.done { background: rgba(63,185,80,0.15); color: var(--green); border-color: var(--green); }
.run-badge.error { background: rgba(248,81,73,0.15); color: var(--red); border-color: var(--red); }
.run-badge.idle { background: rgba(74,144,217,0.15); color: var(--accent); border-color: var(--accent); }

.panel {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 16px;
}
.panel h3 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.cols {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  /* Break out wider than the centered reading column so the two-up panels
     (tool calls / fetched context) get more room. */
  width: calc(100% + 220px); max-width: calc(100vw - 380px); margin-left: -110px;
}
@media (max-width: 1300px) { .cols { width: 100%; max-width: 100%; margin-left: 0; } }
@media (max-width: 1100px) { .cols { grid-template-columns: 1fr; } }

/* flow stepper */
.flow-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.flow-head h3 { margin: 0; }
.flow-head-right { display: flex; align-items: center; gap: 12px; }
.btn-stop { background: var(--red); border-color: var(--red); color: #1a0606; font-weight: 600; }
.btn-stop:hover { filter: brightness(1.08); }
.flow-panel .flow { max-height: 480px; overflow-y: auto; padding-left: 8px; padding-right: 6px; }
.flow { list-style: none; margin: 0; padding: 0; }
.flow li {
  position: relative; padding: 6px 0 12px 22px; border-left: 2px solid var(--border);
  font-size: 13px;
}
.flow li:last-child { border-left-color: transparent; }
.flow li::before {
  content: ""; position: absolute; left: -7px; top: 8px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--bg-3); border: 2px solid var(--accent);
}
.flow li.active::before { background: var(--amber); border-color: var(--amber); }
.flow li.done::before { background: var(--green); border-color: var(--green); }
.flow li .when { color: var(--muted); font-size: 11px; margin-left: 8px; }
.flow li .props { color: var(--muted); font-size: 11px; display: block; margin-top: 2px; }
.flow li .step-reasoning {
  white-space: pre-wrap; margin-top: 6px; padding: 8px 10px; font-size: 12.5px;
  line-height: 1.5; color: var(--text); background: var(--bg); border-radius: 8px;
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
}

.decision { font-size: 15px; font-weight: 700; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.chip { background: var(--bg-3); border: 1px solid var(--border); border-radius: 14px; padding: 3px 10px; font-size: 11px; color: var(--muted); }

.stack { display: flex; flex-direction: column; gap: 10px; }
.tool {
  border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--bg);
}
.tool .tool-head {
  display: flex; align-items: center; gap: 8px; padding: 8px 10px; background: var(--bg-3);
  font-weight: 600; cursor: pointer;
}
.tool .tool-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.tool .tool-head .dot.read { background: var(--green); }
.tool .badge { margin-left: auto; font-size: 10px; color: var(--muted); }
.tool pre { margin: 0; padding: 10px; font-size: 12px; white-space: pre-wrap; word-break: break-word; max-height: 260px; overflow: auto; }
.tool .args { color: var(--purple); border-bottom: 1px solid var(--border); }
.tool .result { color: var(--text); }

.action-item, .gate-item {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 13px;
}
.gate-item .glabel { font-weight: 600; }
.gate-item.actionable { border-color: var(--amber); }
.approval-banner {
  margin: 0 0 14px; padding: 10px 14px; border-radius: 8px; font-size: 13px; font-weight: 600;
  background: rgba(210,153,34,0.14); border: 1px solid var(--amber); color: var(--amber);
}
.gate-item .gate-item-head { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.gate-item .card-actions { margin-top: 8px; }
.card .gate-id, .gate-item .gate-id { font-size: 11px; color: var(--muted); }

.generated { white-space: pre-wrap; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; line-height: 1.55; font-size: 13px; }
.generated .gen-meta { color: var(--muted); font-size: 11px; margin-bottom: 8px; }

.empty-line { color: var(--muted); font-size: 12px; font-style: italic; }
.thread { display: flex; flex-direction: column; gap: 10px; }
.msg {
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; background: var(--bg);
  border-left: 3px solid var(--border);
}
.msg-customer { border-left-color: var(--accent); }
.msg-agent { border-left-color: var(--green); }
.msg-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.msg-author { font-weight: 600; font-size: 13px; }
.msg-meta { color: var(--muted); font-size: 11px; }
.msg-toggle { margin-left: auto; color: var(--muted); font-size: 11px; }
.msg.collapsed { padding-bottom: 8px; }
.msg.collapsed .msg-head { margin-bottom: 0; }
.msg.collapsed .msg-body { display: none; }
.msg-body { white-space: pre-wrap; word-break: break-word; font-size: 13px; line-height: 1.5; }
.toast {
  position: fixed; bottom: 18px; right: 18px; background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 14px; font-size: 13px; box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  opacity: 0; transform: translateY(8px); transition: opacity 0.2s, transform 0.2s;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.ok { border-color: var(--green); }
.toast.err { border-color: var(--red); }