:root {
  --app-height: 100dvh;
  --bg: #fafbfc;
  --panel: #ffffff;
  --panel-2: #f3f5f8;
  --border: #e6e9ef;
  --text: #16202e;
  --muted: #6b7688;
  --accent: #0e9384;
  --accent-2: #2563eb;
  --accent-dim: #e0f5f1;
  --danger: #dc2626;
  --warn: #b45309;
  --code-bg: #f6f8fa;
  --note-bg: #fffbeb;
  --note-border: #fde68a;
  --scrollbar: #d6dbe4;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(22, 32, 46, .05), 0 4px 16px rgba(22, 32, 46, .05);
  font-size: 15px;
}
[data-theme="dark"] {
  --bg: #0c0e13;
  --panel: #14171f;
  --panel-2: #1c2029;
  --border: #272d3b;
  --text: #e8eaf0;
  --muted: #93a1b9;
  --accent: #2dd4bf;
  --accent-2: #60a5fa;
  --accent-dim: #123530;
  --danger: #f87171;
  --warn: #fbbf24;
  --code-bg: #0a0c11;
  --note-bg: #2a2410;
  --note-border: #574a19;
  --scrollbar: #313848;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
}
html { background: var(--bg); }
.theme-btn {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 9px; width: 34px; height: 34px; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--muted); padding: 0;
}
.theme-btn svg { width: 16px; height: 16px; }
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  line-height: 1.55;
}
.app-shell, .app-shell body {
  width: 100%; height: 100%; overflow: hidden; overscroll-behavior: none;
}
#app {
  position: fixed; inset: 0; display: flex;
  width: 100%; height: 100vh; height: var(--app-height, 100dvh); overflow: hidden;
}
#mobile-header, #sidebar-backdrop { display: none; }

/* ---------- Neural Edge agent rail ---------- */
#agent-rail {
  width: 248px; min-width: 248px; min-height: 0; overflow-y: auto;
  padding: 22px 16px; border-left: 1px solid var(--border);
  background: var(--panel); color: var(--text);
  overscroll-behavior-y: contain;
}
.agent-rail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.agent-eyebrow {
  display: block; color: var(--accent); font-size: 9.5px; font-weight: 800;
  letter-spacing: 1.25px; text-transform: uppercase; margin-bottom: 3px;
}
.agent-rail-head h2 { font-size: 15px; line-height: 1.25; }
.episode-status {
  flex: none; border-radius: 99px; padding: 3px 7px; background: var(--panel-2);
  color: var(--muted); font-size: 9px; font-weight: 800; text-transform: uppercase;
  letter-spacing: .65px;
}
.episode-status.active { color: var(--accent); background: var(--accent-dim); }
.episode-status.failed { color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); }
.episode-status.stopped { color: var(--muted); background: var(--panel-2); }
.agent-count-card {
  margin: 18px 0 14px; padding: 14px; border: 1px solid var(--border);
  border-radius: 13px; background: var(--panel-2);
}
.agent-count-card strong { display: block; font-size: 34px; line-height: 1; letter-spacing: -1.5px; }
.agent-count-card span { display: block; margin-top: 5px; color: var(--text); font-size: 12px; font-weight: 700; }
.agent-count-card p { margin-top: 8px; color: var(--muted); font-size: 10.5px; line-height: 1.45; }
.agent-list { display: flex; flex-direction: column; gap: 7px; }
.agent-item {
  display: grid; grid-template-columns: 9px minmax(0, 1fr); gap: 9px;
  padding: 9px 10px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg);
}
.agent-state { width: 8px; height: 8px; margin-top: 4px; border-radius: 50%; background: var(--accent); }
.agent-item.active .agent-state, .agent-item.deploying .agent-state {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
  animation: agent-pulse 1.35s ease-in-out infinite;
}
.agent-item.failed .agent-state { background: var(--danger); }
.agent-item.stopped .agent-state { background: var(--muted); }
.agent-item strong { display: block; overflow: hidden; color: var(--text); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.agent-item span { display: block; overflow: hidden; margin-top: 2px; color: var(--muted); font-size: 9.5px; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.agent-empty { padding: 12px 4px; color: var(--muted); font-size: 10.5px; line-height: 1.5; }
.agent-rail-foot { margin-top: 16px; padding-top: 13px; border-top: 1px solid var(--border); color: var(--muted); font-size: 9.5px; line-height: 1.5; }
@keyframes agent-pulse { 50% { opacity: .45; transform: scale(.78); } }

/* ---------- sidebar ---------- */
#sidebar {
  width: 292px; min-width: 292px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 18px 14px;
  gap: 14px;
  min-height: 0; overflow-y: auto; overscroll-behavior-y: contain;
  -webkit-overflow-scrolling: touch; touch-action: pan-y;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 2px 4px; }
.brand-theme { margin-left: auto; border: none; background: none; width: 28px; height: 28px; }
.brand-mark {
  width: 58px; height: 58px;
  display: flex; align-items: center; justify-content: center;
}
.brand-mark img { width: 100%; height: 100%; display: block; }
.brand-name { font-size: 21px; }
.brand-name { font-weight: 700; font-size: 17px; letter-spacing: .3px; }
.brand-sub { font-size: 11.5px; color: var(--muted); }

.btn-primary {
  background: var(--accent); color: #fff;
  border: none; border-radius: 10px;
  padding: 9px 14px; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: filter .15s;
  box-shadow: var(--shadow);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-primary:disabled { opacity: .5; cursor: default; }

.side-section { display: flex; flex-direction: column; gap: 6px; }
.side-title {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; color: var(--muted); padding: 0 4px;
  display: flex; align-items: center; gap: 6px;
}
.side-title span:first-child { flex: 1; }
.side-add {
  background: none; border: none; color: var(--muted); cursor: pointer;
  padding: 2px; border-radius: 6px; display: flex;
}
.side-add svg { width: 15px; height: 15px; }
.side-add:hover { color: var(--accent); background: var(--panel-2); }
.side-toggle {
  width: 100%; background: none; border: none; cursor: pointer;
  font: inherit; font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; color: var(--muted);
}
.side-toggle .chev { width: 13px; height: 13px; transition: transform .18s; }
.side-toggle.open .chev { transform: rotate(90deg); }
.pill {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 99px; padding: 0 7px; font-size: 10px; color: var(--accent);
}
.sgroup-label {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .8px;
  color: var(--muted); padding: 8px 6px 3px; opacity: .8;
}

.session-item {
  padding: 7px 10px; border-radius: 8px; font-size: 13px;
  color: var(--muted); cursor: pointer;
  display: flex; align-items: center; gap: 6px;
}
.session-item .st {
  flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.session-item:hover { background: var(--panel-2); color: var(--text); }
.session-item.active { background: var(--accent-dim); color: var(--accent); }
.session-item .pin-mark { width: 11px; height: 11px; min-width: 11px; color: var(--accent); opacity: .8; }
.session-item .smenu {
  visibility: hidden; background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 15px; line-height: 1; padding: 0 3px; letter-spacing: 1px;
}
.session-item:hover .smenu, .session-item.active .smenu { visibility: visible; }
.session-item .smenu:hover { color: var(--accent); }

/* folders */
.folder-head {
  display: flex; align-items: center; gap: 6px; padding: 6px 8px;
  border-radius: 8px; cursor: pointer; color: var(--muted); font-size: 12.5px;
}
.folder-head:hover { background: var(--panel-2); color: var(--text); }
.folder-head.drop { background: var(--accent-dim); color: var(--accent); }
.folder-head .chev { width: 13px; height: 13px; min-width: 13px; transition: transform .18s; }
.folder.open .folder-head .chev { transform: rotate(90deg); }
.folder-head .fname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.folder-head .fcount { font-size: 10.5px; color: var(--muted); background: var(--panel-2);
  border-radius: 99px; padding: 0 6px; }
.folder-head .fmenu { visibility: hidden; background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 15px; padding: 0 2px; }
.folder-head:hover .fmenu { visibility: visible; }
.folder-body { display: none; padding-left: 12px; }
.folder.open .folder-body { display: block; }

/* popover menu */
.popover {
  position: fixed; z-index: 200; min-width: 176px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 10px 34px rgba(22,32,46,.18); padding: 5px;
}
.popover button {
  display: block; width: 100%; text-align: left; background: none; border: none;
  cursor: pointer; padding: 8px 10px; border-radius: 7px; font-size: 13px; color: var(--text);
}
.popover button:hover { background: var(--panel-2); }
.popover button.danger { color: var(--danger); }
.popover .pop-sub { font-size: 10px; text-transform: uppercase; letter-spacing: .6px;
  color: var(--muted); padding: 6px 10px 2px; }
.popover .pop-empty { font-size: 12px; color: var(--muted); padding: 4px 10px; font-style: italic; }
.popover .pop-div { height: 1px; background: var(--border); margin: 4px 2px; }

.mem-item {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 9px; font-size: 12px; color: var(--muted);
  display: flex; gap: 8px; align-items: flex-start;
}
.mem-item .tier {
  font-size: 9.5px; font-weight: 700; text-transform: uppercase;
  color: var(--accent); background: var(--accent-dim);
  border-radius: 5px; padding: 1px 5px; margin-top: 2px;
}
.mem-item .del {
  margin-left: auto; cursor: pointer; color: var(--muted);
  background: none; border: none; font-size: 13px; line-height: 1;
}
.mem-item .del:hover { color: var(--danger); }
.mem-empty { font-size: 12px; color: var(--muted); padding: 2px 4px; font-style: italic; }

.account-box {
  margin-top: auto; border: 1px solid var(--border); background: var(--panel-2);
  border-radius: 12px; padding: 10px 12px; font-size: 12.5px;
}
.acct-row { display: flex; align-items: center; gap: 10px; }
.acct-avatar {
  width: 30px; height: 30px; min-width: 30px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 700; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
}
.acct-info { flex: 1; min-width: 0; }
.account-box .email { color: var(--text); font-weight: 600; font-size: 12.5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.acct-meta { display: flex; align-items: center; gap: 6px; min-width: 0; }
.acct-role {
  display: none; flex: none; color: var(--accent); background: var(--accent-dim);
  border-radius: 5px; padding: 1px 5px; font-size: 8.5px; font-weight: 800;
  letter-spacing: .35px; text-transform: uppercase;
}
.acct-status {
  display: block; min-width: 0; font-size: 11.5px; color: var(--muted);
  text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.acct-status:hover { color: var(--accent); }
.acct-status.warn { color: var(--warn); font-weight: 600; }
.acct-actions {
  display: grid; margin: 8px -4px -3px; padding-top: 6px;
  border-top: 1px solid var(--border);
}
.acct-action {
  display: flex; width: 100%; align-items: center; gap: 9px; padding: 7px 8px;
  border: 0; border-radius: 7px; background: none; color: var(--muted);
  font: inherit; font-size: 11.5px; font-weight: 600; text-align: left;
  text-decoration: none; cursor: pointer;
}
.acct-action svg { width: 14px; height: 14px; flex: none; }
.acct-action:hover { background: var(--panel); color: var(--accent); }
.acct-action.admin-action { color: var(--accent); }
.acct-action.warn { color: var(--warn); }
.quota-bar {
  margin-top: 9px;
  height: 7px; border-radius: 99px; background: var(--panel);
  border: 1px solid var(--border); overflow: hidden; margin: 7px 0 4px;
}
.quota-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width .4s;
}
.quota-fill.low { background: linear-gradient(90deg, #f59e0b, #dc2626); }
.quota-label { font-size: 11px; color: var(--muted); margin-bottom: 8px; }
.twofa-row { font-size: 11.5px; margin-bottom: 8px; color: var(--muted); }
.twofa-row button {
  background: none; border: none; color: var(--accent); font-size: 11.5px;
  font-weight: 600; cursor: pointer; padding: 0;
}
.twofa-row .nudge { color: var(--warn); }
.twofa-panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: 9px;
  padding: 10px; margin-bottom: 10px; font-size: 11.5px; color: var(--muted);
}
.twofa-panel code {
  display: block; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 8px; margin: 6px 0; font-size: 11px;
  word-break: break-all; user-select: all;
}
.twofa-panel input {
  width: 100%; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 7px; padding: 7px 9px; font-size: 13px; color: var(--text);
  outline: none; margin: 6px 0; letter-spacing: 3px; text-align: center;
}
.twofa-panel input:focus { border-color: var(--accent); }
.twofa-panel .btn-primary { width: 100%; padding: 7px; font-size: 12px; }
.twofa-panel .perr { color: var(--danger); min-height: 15px; margin-top: 4px; }
.account-links { display: flex; gap: 10px; }
.account-links a, .account-links button {
  font-size: 11.5px; color: var(--muted); background: none; border: none;
  cursor: pointer; text-decoration: none; padding: 0;
}
.account-links a:hover, .account-links button:hover { color: var(--accent); }

/* ---------- main ---------- */
#main { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; overflow: hidden; }
#thread {
  flex: 1; overflow-y: auto; padding: 32px 0 16px;
  min-height: 0; display: flex; flex-direction: column; gap: 18px;
  overscroll-behavior-y: contain; -webkit-overflow-scrolling: touch; touch-action: pan-y;
}
.row { max-width: 780px; width: 100%; margin: 0 auto; padding: 0 28px; }

#empty-state { margin: auto; text-align: center; max-width: 620px; padding: 0 24px; }
.es-mark {
  width: 84px; height: 84px; margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
}
.es-mark img { width: 100%; height: 100%; }
#empty-state h1 { font-size: 24px; margin-bottom: 10px; }
#empty-state p { color: var(--muted); font-size: 14px; margin-bottom: 22px; }
.suggestions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sugg {
  background: var(--panel); border: 1px solid var(--border); color: var(--muted);
  border-radius: 10px; padding: 11px 13px; font-size: 12.5px; text-align: left;
  cursor: pointer; transition: border-color .15s, color .15s; box-shadow: var(--shadow);
}
.sugg:hover { border-color: var(--accent); color: var(--text); }

.msg { display: flex; gap: 12px; }
.avatar {
  width: 30px; height: 30px; min-width: 30px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; margin-top: 2px;
}
.msg.user .avatar { background: var(--panel-2); border: 1px solid var(--border); color: var(--muted); }
.msg.assistant .avatar { background: none; }
.msg.assistant .avatar img { width: 100%; height: 100%; }
.bubble { min-width: 0; flex: 1; }
.msg.user .bubble .content {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 14px; display: inline-block;
  box-shadow: var(--shadow);
}
.content { word-wrap: break-word; overflow-wrap: anywhere; }
.content p { margin: 0 0 8px; } .content p:last-child { margin-bottom: 0; }
.content h3, .content h4 { line-height: 1.3; letter-spacing: -.15px; }
.content h3 { font-size: 16px; margin: 16px 0 7px; }
.content h4 { font-size: 14px; margin: 13px 0 5px; }
.content h3:first-child, .content h4:first-child { margin-top: 0; }
.content hr { border: 0; border-top: 1px solid var(--border); margin: 14px 0; }
.content pre {
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 9px;
  padding: 12px 14px; font-size: 13px; margin: 8px 0;
}
.content pre code {
  white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere;
}
.content code { font-family: "SF Mono", ui-monospace, Menlo, monospace; font-size: .9em; }
.content p code, .content li code {
  background: var(--code-bg); border: 1px solid var(--border);
  border-radius: 5px; padding: 1px 5px;
}
.content ul, .content ol { padding-left: 22px; margin: 6px 0; }
.content blockquote {
  margin: 10px 0; padding: 8px 12px;
  border-left: 3px solid var(--accent); color: var(--muted);
  background: var(--panel-2); border-radius: 0 8px 8px 0;
}
.content a { color: var(--accent-2); }
.content img, .content video {
  max-width: 100%; border-radius: 10px; border: 1px solid var(--border); margin-top: 8px;
}
.content audio { width: 100%; margin-top: 8px; }
.response-actions {
  position: relative; display: flex; align-items: center; flex-wrap: wrap; gap: 3px;
  min-height: 31px; margin-top: 8px; color: var(--muted);
}
.response-actions button {
  display: inline-flex; align-items: center; gap: 5px;
  min-height: 29px; padding: 5px 7px; border: 1px solid transparent;
  border-radius: 7px; background: transparent; color: inherit;
  font: inherit; font-size: 11px; cursor: pointer;
}
.response-actions button:hover, .response-actions button:focus-visible {
  color: var(--text); background: var(--panel-2); border-color: var(--border);
  outline: none;
}
.response-actions button.active {
  color: var(--accent); background: var(--accent-dim); border-color: transparent;
}
.response-actions button:disabled { opacity: .38; cursor: not-allowed; }
.response-actions button:disabled:hover { background: transparent; border-color: transparent; color: inherit; }
.response-actions svg {
  width: 15px; height: 15px; fill: none; stroke: currentColor;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
.response-action-divider { width: 1px; height: 17px; background: var(--border); margin: 0 3px; }
.response-action-status { margin-left: 4px; color: var(--accent); font-size: 10.5px; }
.sr-only {
  position: absolute; top: 0; left: 0; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

/* ---------- Helix Builder ---------- */
.builder-card {
  margin-top: 14px; overflow: hidden;
  border: 1px solid var(--border); border-radius: 15px;
  background: var(--panel); box-shadow: var(--shadow);
}
.builder-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 18px;
  padding: 17px 18px 14px; border-bottom: 1px solid var(--border);
}
.builder-kicker {
  display: inline-flex; align-items: center; gap: 7px; margin-bottom: 5px;
  color: var(--accent); font-size: 9.5px; font-weight: 850;
  letter-spacing: 1.25px; text-transform: uppercase;
}
.builder-kicker i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-dim);
}
.builder-head h3 { margin: 0; font-size: 16px; line-height: 1.3; }
.builder-head p { margin: 4px 0 0; color: var(--muted); font-size: 11px; }
.builder-status {
  flex: none; padding: 5px 9px; border-radius: 99px;
  background: var(--panel-2); color: var(--muted);
  font-size: 9px; font-weight: 800; letter-spacing: .65px; text-transform: uppercase;
}
.builder-status.ready { background: var(--accent-dim); color: var(--accent); }
.builder-run {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px; padding: 0; border-bottom: 1px solid var(--border);
  background: var(--border);
}
.builder-run-step {
  min-width: 0; display: grid; grid-template-columns: 8px minmax(0, 1fr);
  column-gap: 7px; row-gap: 2px; padding: 9px 11px;
  background: var(--panel-2);
}
.builder-run-step i {
  grid-row: 1 / 3; align-self: start; width: 7px; height: 7px;
  margin-top: 3px; border-radius: 50%; background: var(--accent);
}
.builder-run-step.failed i { background: var(--danger); }
.builder-run-step span {
  color: var(--accent); font-size: 8px; font-weight: 850;
  letter-spacing: .75px; text-transform: uppercase;
}
.builder-run-step strong {
  min-width: 0; color: var(--muted); font-size: 9px; font-weight: 600;
  line-height: 1.35;
}
.builder-tabs {
  display: flex; gap: 4px; padding: 8px 10px; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-2) 58%, transparent);
}
.builder-tab, .builder-actions button {
  border: 1px solid transparent; border-radius: 8px; background: transparent;
  color: var(--muted); font: inherit; font-size: 11px; font-weight: 700;
  cursor: pointer;
}
.builder-tab { padding: 6px 11px; }
.builder-tab:hover, .builder-tab:focus-visible,
.builder-actions button:hover, .builder-actions button:focus-visible {
  color: var(--text); border-color: var(--border); outline: none;
}
.builder-tab.active { color: var(--text); background: var(--panel); border-color: var(--border); }
.builder-tab:disabled { opacity: .4; cursor: default; }
.builder-panel.hidden { display: none; }
.builder-preview { height: 430px; padding: 10px; background: var(--panel-2); }
.builder-preview iframe {
  display: block; width: 100%; height: 100%; border: 1px solid var(--border);
  border-radius: 10px; background: #fff;
}
.builder-preview-unavailable {
  height: 100%; display: grid; place-items: center; padding: 28px;
  color: var(--muted); text-align: center; font-size: 12px;
}
.builder-files {
  display: grid; grid-template-columns: 160px minmax(0, 1fr);
  min-height: 350px; max-height: 470px; background: var(--code-bg);
}
.builder-file-list {
  padding: 8px; overflow: auto; border-right: 1px solid var(--border);
  background: var(--panel-2);
}
.builder-file {
  display: flex; width: 100%; align-items: center; justify-content: space-between;
  gap: 8px; padding: 8px 9px; border: 1px solid transparent; border-radius: 7px;
  background: transparent; color: var(--muted); font: inherit; font-size: 10.5px;
  text-align: left; cursor: pointer;
}
.builder-file:hover, .builder-file.active {
  background: var(--panel); color: var(--text); border-color: var(--border);
}
.builder-file small { color: var(--muted); font-size: 8.5px; }
.builder-source {
  margin: 0; padding: 16px; overflow: auto; border: 0; border-radius: 0;
  background: var(--code-bg); color: var(--text); font-size: 11px;
  line-height: 1.55; tab-size: 2;
}
.builder-source code { white-space: pre; overflow-wrap: normal; word-break: normal; }
.builder-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 10px 12px; border-top: 1px solid var(--border);
}
.builder-safety { display: flex; flex-direction: column; gap: 2px; color: var(--muted); font-size: 8.5px; }
.builder-actions { display: flex; flex: none; gap: 6px; }
.builder-actions button { padding: 7px 10px; border-color: var(--border); }
.builder-actions button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
body.builder-preview-open { overflow: hidden; }
.builder-card.expanded {
  position: fixed; inset: 12px; z-index: 1200; display: flex; flex-direction: column;
  margin: 0; border-radius: 16px; box-shadow: 0 28px 100px rgba(2, 8, 23, .45);
}
.builder-card.expanded .builder-preview { flex: 1; min-height: 0; height: auto; }
.builder-card.expanded .builder-files { flex: 1; max-height: none; min-height: 0; }
.builder-card.expanded .builder-head { padding-top: 13px; padding-bottom: 11px; }

/* ---------- first-login panel tour ---------- */
#onboarding { position: fixed; inset: 0; z-index: 900; }
.tour-blocker { position: fixed; inset: 0; z-index: 900; }
.tour-spotlight {
  position: fixed; z-index: 901; pointer-events: none;
  border: 2px solid var(--accent); border-radius: 12px;
  box-shadow: 0 0 0 9999px rgba(6, 11, 20, .64), 0 0 0 6px rgba(14, 147, 132, .18);
  transition: top .18s ease, left .18s ease, width .18s ease, height .18s ease;
}
.tour-card {
  position: fixed; z-index: 903; width: min(360px, calc(100vw - 28px));
  padding: 22px; border: 1px solid var(--border); border-radius: 16px;
  background: var(--panel); color: var(--text);
  box-shadow: 0 22px 70px rgba(4, 9, 18, .28);
}
.tour-progress {
  color: var(--accent); font-size: 10px; font-weight: 800;
  letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px;
}
.tour-card h2 { font-size: 20px; line-height: 1.25; margin-bottom: 8px; }
.tour-card p { color: var(--muted); font-size: 13.5px; line-height: 1.6; }
.tour-dots { display: flex; gap: 6px; margin-top: 18px; }
.tour-dots span { width: 6px; height: 6px; border-radius: 50%; background: var(--border); }
.tour-dots span.active { width: 18px; border-radius: 99px; background: var(--accent); }
#tour-error { min-height: 18px; margin-top: 8px; color: var(--danger); font-size: 11px; }
.tour-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.tour-actions button {
  min-width: 78px; border: 1px solid var(--border); border-radius: 9px;
  background: var(--panel-2); color: var(--text); padding: 9px 13px;
  font: inherit; font-size: 12.5px; font-weight: 700; cursor: pointer;
}
.tour-actions .btn-primary { border-color: var(--accent); background: var(--accent); color: #fff; }
.tour-actions button:disabled { opacity: .55; cursor: default; }
.message-files { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 9px; }
.message-files .attachment-chip { box-shadow: none; background: var(--panel-2); }

#report-dialog {
  width: min(520px, calc(100vw - 28px)); padding: 0;
  border: 1px solid var(--border); border-radius: 15px;
  background: var(--panel); color: var(--text); box-shadow: 0 22px 70px rgba(15, 23, 42, .28);
}
#report-dialog::backdrop { background: rgba(15, 23, 42, .48); backdrop-filter: blur(2px); }
#report-form { padding: 22px; }
.report-head { display: flex; gap: 18px; justify-content: space-between; margin-bottom: 18px; }
.report-head h2 { font-size: 18px; margin-bottom: 4px; }
.report-head p { color: var(--muted); font-size: 12.5px; line-height: 1.5; }
#report-close {
  flex: none; width: 30px; height: 30px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--panel-2); color: var(--muted);
  font-size: 20px; line-height: 1; cursor: pointer;
}
#report-close:hover { color: var(--text); border-color: var(--accent); }
#report-form label { display: block; margin: 12px 0 5px; font-size: 12px; font-weight: 700; }
#report-form select, #report-form textarea {
  width: 100%; border: 1px solid var(--border); border-radius: 9px;
  background: var(--panel-2); color: var(--text); padding: 10px 11px;
  font: inherit; font-size: 13px; outline: none;
}
#report-form textarea { resize: vertical; min-height: 105px; }
#report-form select:focus, #report-form textarea:focus { border-color: var(--accent); }
#report-error { min-height: 18px; margin-top: 7px; color: var(--danger); font-size: 12px; }
.report-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 10px; }
.report-cancel {
  border: 1px solid var(--border); border-radius: 9px; background: var(--panel-2);
  color: var(--muted); padding: 9px 14px; font-weight: 600; cursor: pointer;
}
.report-cancel:hover { color: var(--text); }

.route-chip {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 11px; color: var(--muted);
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 99px; padding: 3px 11px; margin-bottom: 7px;
  cursor: pointer; user-select: none;
}
.route-chip:hover { border-color: var(--accent); }
.route-chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.route-chip .fb { color: var(--warn); }
.route-detail {
  display: none; background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 14px; margin-bottom: 8px;
  font-size: 12px; color: var(--muted); box-shadow: var(--shadow);
}
.route-detail.open { display: block; }
.route-detail table { border-collapse: collapse; width: 100%; }
.route-detail td { padding: 2.5px 8px 2.5px 0; vertical-align: top; }
.route-detail td:first-child { color: var(--accent); white-space: nowrap; font-weight: 600; }

.pending { color: var(--muted); font-style: italic; }
.chat-tool-activity {
  display: inline-flex; align-items: center; gap: 10px;
  max-width: min(620px, 100%); margin: 2px 0 12px; padding: 10px 13px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border));
  border-radius: 12px; background: color-mix(in srgb, var(--accent) 7%, var(--panel));
  color: var(--text);
}
.chat-tool-activity > div { display: grid; gap: 2px; min-width: 0; }
.chat-tool-activity strong { font-size: 13px; line-height: 1.35; }
.chat-tool-activity small { color: var(--muted); font-size: 11.5px; line-height: 1.35; }
.chat-tool-pulse {
  flex: 0 0 auto; width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 45%, transparent);
  animation: tool-pulse 1.45s ease-out infinite;
}
@keyframes tool-pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 45%, transparent); }
  70%, 100% { box-shadow: 0 0 0 8px transparent; }
}
/* ---- thinking animation ---- */
.thinking { display: inline-flex; align-items: center; gap: 12px; padding: 4px 0; }
.th-orb { position: relative; width: 38px; height: 38px; }
.th-core {
  position: absolute; top: 50%; left: 50%; width: 12px; height: 12px;
  margin: -6px 0 0 -6px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  animation: th-pulse 1.6s ease-in-out infinite;
}
@keyframes th-pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 6px rgba(14,147,132,.5); }
  50% { transform: scale(1.35); box-shadow: 0 0 16px rgba(37,99,235,.6); }
}
.th-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1.5px dashed color-mix(in srgb, var(--accent) 55%, transparent);
  animation: th-spin 2.2s linear infinite;
}
.th-ring.r2 {
  inset: 7px; border-color: color-mix(in srgb, var(--accent-2) 45%, transparent);
  animation: th-spin 1.4s linear infinite reverse;
}
@keyframes th-spin { to { transform: rotate(360deg); } }
.th-ring i {
  position: absolute; top: -3px; left: 50%; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.th-ring.r2 i { background: var(--accent-2); box-shadow: 0 0 8px var(--accent-2); }
.th-text {
  font-size: 13.5px; font-weight: 600;
  background: linear-gradient(90deg, var(--muted), var(--accent), var(--accent-2), var(--muted));
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: th-shimmer 2.2s linear infinite;
}
@keyframes th-shimmer { to { background-position: 220% 0; } }
@media (prefers-reduced-motion: reduce) {
  .th-ring, .th-core, .th-text, .agent-state, .chat-tool-pulse { animation: none; }
}

@media (max-width: 1120px) {
  #agent-rail { display: none; }
}

#composer {
  display: flex; flex-direction: column; gap: 7px;
  max-width: 780px; width: 100%; margin: 0 auto;
  padding: 12px 28px 22px;
}
#composer-row { display: flex; gap: 10px; align-items: flex-end; width: 100%; }
#quote-preview {
  display: none; margin-left: 72px; min-width: 0;
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: 10px; padding: 9px 11px; background: var(--panel-2);
  color: var(--text); box-shadow: var(--shadow);
}
#quote-preview.open { display: block; }
.quote-preview-head { display: flex; align-items: center; justify-content: space-between;
  gap: 10px; margin-bottom: 5px; }
.quote-preview-head span { color: var(--accent); font-size: 10px; font-weight: 800;
  letter-spacing: .65px; text-transform: uppercase; }
.quote-preview-head button { width: 24px; height: 24px; display: grid; place-items: center;
  border: 0; border-radius: 6px; background: transparent; color: var(--muted);
  font: inherit; font-size: 18px; line-height: 1; cursor: pointer; }
.quote-preview-head button:hover, .quote-preview-head button:focus-visible {
  background: var(--panel); color: var(--danger); outline: none;
}
.quote-preview-text { max-height: 118px; overflow: auto; color: var(--muted);
  font-size: 12.5px; line-height: 1.5; padding-right: 4px; }
.quote-preview-text h3, .quote-preview-text h4 { font-size: 12.5px; margin: 7px 0 3px; }
.quote-preview-text p { margin-bottom: 5px; }
.quote-preview-text pre { padding: 7px 9px; font-size: 11px; }
#attachment-tray { display: none; flex-wrap: wrap; gap: 7px; padding-left: 72px; }
#attachment-tray.has-files { display: flex; }
.attachment-chip {
  display: inline-flex; align-items: center; gap: 7px; max-width: 270px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
  border-radius: 9px; padding: 7px 8px 7px 10px; font-size: 12px;
  box-shadow: var(--shadow);
}
.attachment-chip svg { width: 14px; height: 14px; flex: none; color: var(--accent); }
.attachment-chip .file-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attachment-chip .file-size { color: var(--muted); white-space: nowrap; }
.attachment-chip .remove-file {
  border: 0; background: transparent; color: var(--muted); cursor: pointer;
  font: inherit; font-size: 17px; line-height: 1; padding: 0 2px;
}
.attachment-chip .remove-file:hover { color: var(--danger); }
#attachment-error {
  display: none; margin-left: 72px; color: var(--danger); font-size: 12px;
}
#attachment-error.open { display: block; }
.attachment-help { margin-left: 72px; color: var(--muted); font-size: 10.5px; }
.attach-btn {
  width: 43px; height: 43px; flex: none; display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: 12px; background: var(--panel);
  color: var(--muted); cursor: pointer; box-shadow: var(--shadow);
}
.attach-btn:hover, .attach-btn:focus-visible { color: var(--accent); border-color: var(--accent); }
.attach-btn:disabled { opacity: .5; cursor: not-allowed; }
.attach-btn svg { width: 20px; height: 20px; }
#mode-toggle {
  display: flex; flex-direction: column; gap: 4px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 4px;
}
.mode-btn {
  background: none; border: none; color: var(--muted);
  font-size: 11px; font-weight: 600; padding: 5px 10px;
  border-radius: 7px; cursor: pointer;
}
.mode-btn.active { background: var(--accent-dim); color: var(--accent); }
.draft-row td { font-size: 11.5px; }
.draft-fail { color: var(--danger); }
#input {
  flex: 1; min-width: 0; resize: none; max-height: 180px;
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 15px; font-size: 14.5px; font-family: inherit; line-height: 1.5;
  outline: none; box-shadow: var(--shadow);
}
#input:focus { border-color: var(--accent); }
#send { padding: 12px 20px; }
#send.steer { background: var(--accent-2); }
#stop {
  min-height: 43px; display: inline-flex; align-items: center; justify-content: center;
  gap: 7px; padding: 10px 13px; border: 1px solid var(--border);
  border-radius: 11px; background: var(--panel); color: var(--muted);
  font: inherit; font-size: 12px; font-weight: 700; cursor: pointer;
  box-shadow: var(--shadow);
}
#stop[hidden] { display: none; }
#stop:hover, #stop:focus-visible { color: var(--danger); border-color: var(--danger); outline: none; }
#stop span { width: 9px; height: 9px; border-radius: 2px; background: currentColor; }
.stream-state {
  display: inline-flex; margin-top: 9px; padding: 3px 8px; border-radius: 99px;
  background: var(--panel-2); color: var(--muted); font-size: 10px; font-weight: 700;
}

@media (max-width: 760px) {
  .app-shell, .app-shell body { width: 100%; max-width: 100%; overflow: hidden; }
  #app { width: 100%; height: var(--app-height, 100dvh); overflow: hidden; }
  #sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 310;
    width: min(88vw, 320px); min-width: 0; height: 100dvh;
    padding: calc(14px + env(safe-area-inset-top)) 14px calc(14px + env(safe-area-inset-bottom));
    transform: translateX(-102%);
    transition: transform .22s ease; box-shadow: 18px 0 42px rgba(0,0,0,.22);
  }
  #app.sidebar-open #sidebar { transform: translateX(0); }
  #sidebar-backdrop {
    position: fixed; inset: 0; z-index: 300; width: 100%; height: 100%;
    border: 0; background: rgba(5,9,16,.5); opacity: 0; pointer-events: none;
    transition: opacity .22s ease;
  }
  #app.sidebar-open #sidebar-backdrop { display: block; opacity: 1; pointer-events: auto; }
  #main {
    display: grid; grid-template-rows: auto minmax(0, 1fr) auto;
    width: 100%; height: var(--app-height, 100dvh); min-height: 0;
  }
  #mobile-header {
    display: flex; align-items: center; justify-content: space-between; flex: none;
    min-height: calc(56px + env(safe-area-inset-top));
    padding: calc(8px + env(safe-area-inset-top)) 12px 8px;
    border-bottom: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  }
  #mobile-menu, #mobile-new-chat {
    width: 40px; height: 40px; display: grid; place-items: center;
    border: 1px solid var(--border); border-radius: 11px; background: var(--panel);
    color: var(--text); box-shadow: var(--shadow); cursor: pointer;
  }
  #mobile-menu svg { width: 19px; height: 19px; }
  #mobile-new-chat { color: var(--accent); font-size: 23px; line-height: 1; }
  .mobile-brand { display: inline-flex; align-items: center; gap: 7px; color: var(--text); text-decoration: none; }
  .mobile-brand img { width: 34px; height: 34px; }
  .mobile-brand strong { font-size: 15px; letter-spacing: .2px; }
  .mobile-brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
  #mobile-agent-count { margin-top: 3px; color: var(--muted); font-size: 8.5px; font-weight: 650; letter-spacing: .15px; }
  #thread {
    width: 100%; height: auto; min-height: 0; padding: 18px 0 12px; gap: 15px;
    overflow-x: hidden; overflow-y: scroll; overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch; touch-action: pan-y;
  }
  .row { padding: 0 14px; }
  #empty-state { padding: 18px; max-width: 440px; }
  .es-mark { width: 58px; height: 58px; margin-bottom: 12px; }
  #empty-state h1 { font-size: 21px; }
  #empty-state p { font-size: 13px; line-height: 1.5; margin-bottom: 16px; }
  .suggestions { grid-template-columns: 1fr; gap: 8px; }
  .sugg { padding: 10px 12px; }
  .msg { gap: 8px; }
  .avatar { width: 27px; height: 27px; min-width: 27px; }
  #composer {
    width: 100%; min-width: 0; margin: 0 auto;
    padding: 10px 12px calc(12px + env(safe-area-inset-bottom));
    background: var(--bg); border-top: 1px solid var(--border);
  }
  #quote-preview, #attachment-tray, #attachment-error, .attachment-help { margin-left: 0; padding-left: 0; }
  #mode-toggle { display: none; }
  #composer-row { gap: 7px; }
  .attach-btn { width: 42px; height: 42px; }
  #input { padding: 10px 12px; font-size: 16px; }
  #send { padding: 12px 14px; }
  #stop { width: 42px; padding: 0; font-size: 0; }
  #stop span { width: 10px; height: 10px; }
  .response-actions button span:not(.sr-only), .response-action-status { display: none; }
  .response-actions button { padding: 6px; }
  .builder-head { padding: 14px; }
  .builder-preview { height: 360px; padding: 7px; }
  .builder-files { grid-template-columns: 1fr; max-height: 420px; }
  .builder-file-list {
    display: flex; gap: 6px; border-right: 0; border-bottom: 1px solid var(--border);
  }
  .builder-file { width: auto; min-width: 120px; }
  .builder-source { min-height: 310px; }
  .builder-foot { align-items: stretch; flex-direction: column; }
  .builder-actions { justify-content: flex-end; }
  .builder-safety { font-size: 8px; }
  .builder-card.expanded { inset: 0; border-radius: 0; }
  .builder-card.expanded .builder-head p, .builder-card.expanded .builder-safety { display: none; }
  #report-dialog { width: calc(100% - 24px); max-height: calc(100dvh - 24px); }
  #report-form { padding: 18px; }
  .tour-card { width: auto; left: 12px; right: 12px; padding: 20px; }
  .tour-card h2 { font-size: 19px; }
}

@media (max-width: 380px) {
  #composer { padding-left: 8px; padding-right: 8px; }
  #send { padding-left: 11px; padding-right: 11px; }
  #empty-state { padding-left: 14px; padding-right: 14px; }
}

.notice {
  background: var(--note-bg); border: 1px solid var(--note-border); color: var(--warn);
  border-radius: 10px; padding: 10px 14px; font-size: 13px;
}

.connection-notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.connection-retry {
  flex: none;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid rgba(180, 83, 9, .25);
  border-radius: 10px;
  background: var(--surface, #fff);
  color: inherit;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

.connection-retry:hover {
  border-color: currentColor;
}

@media (max-width: 620px) {
  .connection-notice {
    align-items: stretch;
    flex-direction: column;
  }
}

::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 5px; }
::-webkit-scrollbar-track { background: transparent; }