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

:root {
  /* ── Backgrounds ─────────────────────────────── */
  --bg:          #08090e;     /* near-black base */
  --surface:     #0c0e15;     /* card / panel bg */
  --surface2:    #11131d;     /* elevated (headers, hover) */
  --surface3:    #171a27;     /* deeply elevated */
  --border:      #1d2035;     /* visible but subtle */

  /* ── Text ────────────────────────────────────── */
  --text:        #edf0f7;     /* primary — high contrast */
  --muted:       #8b95a8;     /* secondary — actually readable */
  --faint:       #4a5263;     /* tertiary / decorative only */

  /* ── Accent ──────────────────────────────────── */
  --accent:      #6366f1;
  --accent-dim:  rgba(99,102,241,0.14);

  /* ── Status ──────────────────────────────────── */
  --success:     #10b981;     /* emerald — easier on eyes than lime */
  --warning:     #f59e0b;
  --error:       #f87171;     /* softer red */

  /* ── Agent colours ───────────────────────────── */
  --agent-chitchat: #818cf8;
  --agent-expert:   #22d3ee;
  --agent-gaming:   #fbbf24;

  /* ── Chat bubbles ────────────────────────────── */
  --user-bg:    rgba(99,102,241,0.10);
  --user-border: rgba(99,102,241,0.20);
  --ai-bg:      rgba(16,185,129,0.07);
  --ai-border:  rgba(16,185,129,0.15);

  --radius:     14px;
  --radius-sm:  9px;
  --radius-msg: 18px;

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
}

body {
  font-family: var(--font);
  background:
    radial-gradient(ellipse 70% 50% at 15% 0%,   rgba(99,102,241,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 85% 100%,  rgba(6,182,212,0.05)  0%, transparent 60%),
    var(--bg);
  color: var(--text);
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Three-column layout ───────────────────────── */
.layout {
  display: flex;
  gap: 16px;
  height: 100dvh;
  max-height: 900px;
  width: 100%;
  max-width: 1460px;
  padding: 16px;
  align-items: stretch;
}

/* ── App shell (left column) ───────────────────── */
.app {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

/* ── Header ────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-left { display: flex; align-items: center; gap: 12px; }
.header-text h1 { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; }
.agent-state {
  display: block; font-size: 11px; color: var(--muted);
  margin-top: 2px; transition: color 0.3s;
}

.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.2);
}
.avatar svg { width: 20px; height: 20px; color: #fff; }

.conn-status { display: flex; align-items: center; gap: 7px; font-size: 12px; color: var(--muted); }
.conn-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted); transition: background 0.4s, box-shadow 0.4s;
}
.conn-dot.connected {
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(34,197,94,0.2);
}

/* ── VAD bar ───────────────────────────────────── */
.vad-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 18px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-size: 12px; color: var(--muted);
  flex-shrink: 0; transition: background 0.3s;
}

/* Waveform bars */
.vad-waves { display: flex; align-items: center; gap: 3px; flex-shrink: 0; }
.vad-waves span {
  display: block; width: 3px; border-radius: 2px;
  background: var(--muted); transition: background 0.2s, height 0.2s;
}
.vad-waves span:nth-child(1) { height: 6px; }
.vad-waves span:nth-child(2) { height: 10px; }
.vad-waves span:nth-child(3) { height: 14px; }
.vad-waves span:nth-child(4) { height: 10px; }
.vad-waves span:nth-child(5) { height: 6px; }

/* listening — green animated waves */
.vad-bar.listening { background: rgba(34,197,94,0.04); }
.vad-bar.listening .vad-waves span { background: var(--success); }
.vad-bar.listening .vad-waves span:nth-child(1) { animation: wave 0.9s ease-in-out infinite 0.0s; }
.vad-bar.listening .vad-waves span:nth-child(2) { animation: wave 0.9s ease-in-out infinite 0.1s; }
.vad-bar.listening .vad-waves span:nth-child(3) { animation: wave 0.9s ease-in-out infinite 0.2s; }
.vad-bar.listening .vad-waves span:nth-child(4) { animation: wave 0.9s ease-in-out infinite 0.3s; }
.vad-bar.listening .vad-waves span:nth-child(5) { animation: wave 0.9s ease-in-out infinite 0.4s; }

/* processing — amber */
.vad-bar.processing { background: rgba(245,158,11,0.04); }
.vad-bar.processing .vad-waves span { background: var(--warning); animation: pulse-flat 1s ease-in-out infinite; }

/* speaking — accent purple animated */
.vad-bar.speaking { background: rgba(99,102,241,0.05); }
.vad-bar.speaking .vad-waves span { background: var(--accent); }
.vad-bar.speaking .vad-waves span:nth-child(1) { animation: wave 0.7s ease-in-out infinite 0.0s; }
.vad-bar.speaking .vad-waves span:nth-child(2) { animation: wave 0.7s ease-in-out infinite 0.15s; }
.vad-bar.speaking .vad-waves span:nth-child(3) { animation: wave 0.7s ease-in-out infinite 0.3s; }
.vad-bar.speaking .vad-waves span:nth-child(4) { animation: wave 0.7s ease-in-out infinite 0.15s; }
.vad-bar.speaking .vad-waves span:nth-child(5) { animation: wave 0.7s ease-in-out infinite 0.0s; }

.vad-label { flex: 1; }

@keyframes wave {
  0%,100% { transform: scaleY(1); }
  50%      { transform: scaleY(2.2); }
}
@keyframes pulse-flat {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

/* ── Conversation ──────────────────────────────── */
.conversation {
  flex: 1; overflow-y: auto;
  padding: 18px 16px 10px;
  display: flex; flex-direction: column; gap: 14px;
  scroll-behavior: smooth;
}
.conversation::-webkit-scrollbar { width: 4px; }
.conversation::-webkit-scrollbar-track { background: transparent; }
.conversation::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.convo-empty {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 14px;
  font-size: 13px; color: var(--muted); text-align: center; padding: 20px;
  line-height: 1.6;
}
.convo-empty-icon svg { width: 40px; height: 40px; color: var(--border); }

/* Message rows */
.msg { display: flex; flex-direction: column; max-width: 82%; }
.msg.user { align-self: flex-end; align-items: flex-end; }
.msg.ai   { align-self: flex-start; align-items: flex-start; }

.msg-label {
  font-size: 10px; font-weight: 700; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 5px; padding: 0 4px;
}

/* Agent-specific label colours */
.msg.ai .msg-label                    { color: var(--agent-chitchat); }
.msg.ai .msg-label[data-agent="sme"]  { color: var(--agent-expert); }
.msg.ai .msg-label[data-agent="gaming"] { color: var(--agent-gaming); }

.msg-bubble {
  padding: 11px 15px;
  border-radius: var(--radius-msg);
  font-size: 14px; line-height: 1.6; word-break: break-word;
  transition: outline 0.2s;
}
.msg.user .msg-bubble {
  background: var(--user-bg);
  border: 1px solid var(--user-border);
  border-bottom-right-radius: 5px;
  color: #bfdbfe;
}
.msg.ai .msg-bubble {
  background: var(--ai-bg);
  border: 1px solid var(--ai-border);
  border-bottom-left-radius: 5px;
  color: #d1fae5;
}

/* Agent-tinted AI bubble */
.msg.ai[data-agent="sme"] .msg-bubble {
  background: rgba(6,182,212,0.07);
  border-color: rgba(6,182,212,0.2);
  color: #a5f3fc;
}
.msg.ai[data-agent="gaming"] .msg-bubble {
  background: rgba(245,158,11,0.07);
  border-color: rgba(245,158,11,0.2);
  color: #fde68a;
}

.msg-bubble.speaking  { outline: 2px solid var(--accent); outline-offset: 2px; }
.pending-text         { opacity: 0.45; font-style: italic; }

/* Audio player row */
.msg-audio { margin-top: 8px; display: flex; align-items: center; gap: 8px; }
.play-btn {
  background: var(--accent); border: none; border-radius: 50%;
  width: 28px; height: 28px; cursor: pointer; color: #fff;
  font-size: 11px; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: opacity 0.2s, transform 0.15s;
}
.play-btn:hover:not(:disabled) { opacity: 0.85; transform: scale(1.08); }
.play-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.audio-status { font-size: 11px; color: var(--muted); }

/* ── Footer ────────────────────────────────────── */
.app-footer {
  padding: 12px 14px;
  background: var(--surface2);
  border-top: 1px solid var(--border);
  display: flex; gap: 8px; align-items: center; flex-shrink: 0;
}

.autogpt-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; color: var(--text-dim);
  cursor: pointer; user-select: none; white-space: nowrap;
  margin-right: 4px;
}
.autogpt-toggle input[type="checkbox"] { accent-color: var(--accent); width: 14px; height: 14px; cursor: pointer; }
.autogpt-toggle:has(input:checked) { color: var(--accent); }

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  border: none; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: opacity 0.2s, transform 0.1s, background 0.2s;
  white-space: nowrap;
}
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-connect {
  padding: 10px 16px;
  background: var(--accent); color: #fff;
}
.btn-connect:hover:not(:disabled) { opacity: 0.88; }

.btn-mic {
  flex: 1; padding: 11px 14px;
  background: var(--surface3); color: var(--text);
  border: 1px solid var(--border);
}
.btn-mic:hover:not(:disabled) { background: var(--surface2); border-color: var(--accent); }
.btn-mic.active {
  background: var(--accent-dim);
  border-color: var(--accent); color: var(--accent);
}
.btn-mic.active .mic-icon { color: var(--accent); }

.btn-interrupt {
  padding: 10px 13px;
  background: rgba(239,68,68,0.1); color: var(--error);
  border: 1px solid rgba(239,68,68,0.3);
}
.btn-interrupt:hover:not(:disabled) { background: rgba(239,68,68,0.2); }

/* ── Agent badge in header ─────────────────────── */
.agent-badge {
  display: inline-block;
  font-size: 10px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 2px 7px; border-radius: 20px;
  margin-left: 6px; vertical-align: middle;
  background: var(--accent-dim); color: var(--accent);
  transition: background 0.3s, color 0.3s;
}
.agent-badge[data-agent="sme"]    { background: rgba(6,182,212,0.12); color: #06b6d4; }
.agent-badge[data-agent="gaming"] { background: rgba(245,158,11,0.12); color: #f59e0b; }

/* ══════════════════════════════════════════════════
   Pipeline Diagram Panel (right column)
══════════════════════════════════════════════════ */

.pipeline-panel {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}

.pipeline-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2px;
}
.pipeline-title {
  font-size: 11px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
}
.pipeline-live {
  font-size: 9px; font-weight: 700; letter-spacing: 0.12em;
  color: var(--success); background: rgba(34,197,94,0.1);
  padding: 2px 6px; border-radius: 10px;
  animation: live-blink 2s ease-in-out infinite;
}
@keyframes live-blink {
  0%,100% { opacity: 1; } 50% { opacity: 0.4; }
}

/* ── Diagram container ─────────────────────────── */
.pipeline-diagram {
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.pipeline-diagram::-webkit-scrollbar { width: 3px; }
.pipeline-diagram::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Pipeline node ─────────────────────────────── */
.pipe-node {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background 0.25s, border-color 0.25s;
  position: relative;
}

/* idle */
.pipe-node { background: transparent; }

/* active — node is currently processing */
.pipe-node.active {
  background: rgba(99,102,241,0.07);
  border-color: rgba(99,102,241,0.25);
}
.pipe-node[data-stage="stt"].active    { background: rgba(34,197,94,0.06);  border-color: rgba(34,197,94,0.2); }
.pipe-node[data-stage="intent"].active { background: rgba(245,158,11,0.07); border-color: rgba(245,158,11,0.25); }
.pipe-node[data-stage="agent"].active  { background: rgba(6,182,212,0.06);  border-color: rgba(6,182,212,0.2); }
.pipe-node[data-stage="tts"].active    { background: rgba(168,85,247,0.06); border-color: rgba(168,85,247,0.2); }

/* done — fades to subtle tint */
.pipe-node.done { background: rgba(255,255,255,0.02); border-color: var(--border); }

/* error */
.pipe-node.error { background: rgba(239,68,68,0.06); border-color: rgba(239,68,68,0.2); }

/* Icon circle */
.pipe-node-icon {
  width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface2); border: 1px solid var(--border);
  transition: background 0.25s, border-color 0.25s;
}
.pipe-node-icon svg { width: 14px; height: 14px; color: var(--muted); transition: color 0.25s; }

.pipe-node.active .pipe-node-icon { background: var(--accent-dim); border-color: var(--accent); }
.pipe-node.active .pipe-node-icon svg { color: var(--accent); }
.pipe-node[data-stage="stt"].active    .pipe-node-icon { background: rgba(34,197,94,0.1);  border-color: var(--success); }
.pipe-node[data-stage="stt"].active    .pipe-node-icon svg { color: var(--success); }
.pipe-node[data-stage="intent"].active .pipe-node-icon { background: rgba(245,158,11,0.1); border-color: var(--warning); }
.pipe-node[data-stage="intent"].active .pipe-node-icon svg { color: var(--warning); }
.pipe-node[data-stage="agent"].active  .pipe-node-icon { background: rgba(6,182,212,0.1);  border-color: #06b6d4; }
.pipe-node[data-stage="agent"].active  .pipe-node-icon svg { color: #06b6d4; }
.pipe-node[data-stage="tts"].active    .pipe-node-icon { background: rgba(168,85,247,0.1); border-color: #a855f7; }
.pipe-node[data-stage="tts"].active    .pipe-node-icon svg { color: #a855f7; }
.pipe-node.done .pipe-node-icon svg { color: var(--success); }
.pipe-node.error .pipe-node-icon svg { color: var(--error); }

/* Node text */
.pipe-node-body  { flex: 1; min-width: 0; }
.pipe-node-title { display: flex; align-items: baseline; justify-content: space-between; gap: 4px; }
.pipe-node-label { font-size: 12px; font-weight: 700; color: var(--text); }
.pipe-node-sub   { font-size: 10px; color: var(--muted); margin-top: 1px; }

/* Per-stage latency badge */
.pipe-latency {
  font-size: 9px; font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, 'SF Mono', monospace;
  color: transparent;
  flex-shrink: 0;
  transition: color 0.3s;
}
.pipe-node.done  .pipe-latency { color: var(--success); }
.pipe-node.error .pipe-latency { color: var(--error); }
.pipe-node-detail {
  font-size: 10px; color: var(--muted); margin-top: 5px;
  line-height: 1.5; word-break: break-word;
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease;
}
.pipe-node-detail.has-content { max-height: 80px; }

/* Status dot top-right */
.pipe-node-status {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--border); flex-shrink: 0; margin-top: 4px;
  transition: background 0.25s;
}
.pipe-node.active .pipe-node-status { background: var(--accent); animation: pulse-dot 0.8s ease-in-out infinite; }
.pipe-node[data-stage="stt"].active    .pipe-node-status { background: var(--success); }
.pipe-node[data-stage="intent"].active .pipe-node-status { background: var(--warning); }
.pipe-node[data-stage="agent"].active  .pipe-node-status { background: #06b6d4; }
.pipe-node[data-stage="tts"].active    .pipe-node-status { background: #a855f7; }
.pipe-node.done .pipe-node-status  { background: var(--success); animation: none; }
.pipe-node.error .pipe-node-status { background: var(--error); animation: none; }

@keyframes pulse-dot {
  0%,100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.5); opacity: 0.6; }
}

/* ── Connector line between nodes ──────────────── */
.pipe-connector {
  width: 1px; height: 18px;
  background: var(--border);
  margin: 0 0 0 25px;        /* aligns with centre of icon */
  transition: background 0.3s;
  position: relative;
}
.pipe-connector.active {
  background: var(--accent);
}
.pipe-connector.active::after {
  content: '';
  position: absolute;
  top: 0; left: -2px;
  width: 5px; height: 100%;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  animation: flow-down 0.6s linear infinite;
}
@keyframes flow-down {
  0%   { transform: translateY(-100%); opacity: 0; }
  50%  { opacity: 1; }
  100% { transform: translateY(100%); opacity: 0; }
}

/* ── Routing decision card ─────────────────────── */
.routing-card {
  background: var(--surface);
  border: 1px solid rgba(39,42,58,0.7);
  border-radius: var(--radius);
  padding: 10px 12px 12px;
  flex-shrink: 0;
}
.routing-card-title {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 9px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 10px;
}
.routing-ts {
  font-size: 9px; font-weight: 500; letter-spacing: 0;
  text-transform: none; color: var(--faint);
  font-variant-numeric: tabular-nums;
}
.routing-empty { font-size: 11px; color: var(--muted); }

/* ── Card body layout ──────────────────────────── */
.routing-rows { display: flex; flex-direction: column; gap: 5px; }

/* Labeled rows */
.rc-row {
  display: flex; align-items: center; gap: 8px;
}
.rc-label {
  font-size: 8px; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--faint);
  flex-shrink: 0; min-width: 62px;
}
.rc-row-vals {
  display: flex; align-items: center; gap: 5px; flex: 1; flex-wrap: wrap;
}

.rc-intent-pill {
  font-size: 10px; font-weight: 800; letter-spacing: 0.04em;
  padding: 2px 8px; border-radius: 20px;
  background: rgba(99,102,241,0.12); color: #818cf8;
  text-transform: lowercase;
}
.rc-intent-pill[data-intent="learning"]    { background: rgba(6,182,212,0.12);  color: #22d3ee; }
.rc-intent-pill[data-intent="doubt"]       { background: rgba(245,158,11,0.12); color: #fbbf24; }
.rc-intent-pill[data-intent="assessment"]  { background: rgba(168,85,247,0.12); color: #c084fc; }
.rc-intent-pill[data-intent="school_task"] { background: rgba(59,130,246,0.12); color: #60a5fa; }
.rc-intent-pill[data-intent="CONTINUE"]    { background: rgba(34,197,94,0.1);   color: #4ade80; }
.rc-intent-pill[data-intent="chit_chat"]   { background: rgba(100,116,139,0.12); color: var(--muted); }

.rc-subintent-val {
  font-size: 10px; color: var(--muted); font-weight: 500;
  letter-spacing: 0.02em;
}
.rc-switch-tag {
  margin-left: auto; font-size: 9px; font-weight: 700; letter-spacing: 0.03em;
  padding: 2px 7px; border-radius: 10px;
  background: rgba(99,102,241,0.1); color: rgba(129,140,248,0.8);
}
.rc-switch-tag.stayed {
  background: rgba(100,116,139,0.08); color: var(--faint);
}

.routing-row-val.tag {
  font-size: 10px; padding: 2px 8px; border-radius: 10px;
  background: var(--surface2); color: var(--text); font-weight: 700;
}
.routing-row-val.tag[data-agent="chitchat"] { background: rgba(99,102,241,0.15); color: #818cf8; }
.routing-row-val.tag[data-agent="sme"]      { background: rgba(6,182,212,0.15);  color: #22d3ee; }
.routing-row-val.tag[data-agent="gaming"]   { background: rgba(245,158,11,0.15); color: #fbbf24; }

/* Confidence bar */
.rc-conf-row {
  display: flex; align-items: center; gap: 8px;
}
.rc-conf-track {
  flex: 1; height: 4px; border-radius: 2px;
  background: rgba(255,255,255,0.06); overflow: hidden;
}
.rc-conf-fill {
  height: 100%; border-radius: 2px;
  background: var(--success); transition: width 0.35s ease;
}
.rc-conf-fill.mid { background: var(--warning); }
.rc-conf-fill.low { background: var(--error); }
.rc-conf-num {
  font-size: 10px; font-weight: 700; color: var(--success);
  font-variant-numeric: tabular-nums; min-width: 28px; text-align: right;
}
.rc-conf-num.mid { color: var(--warning); }
.rc-conf-num.low { color: var(--error); }

/* Reason — tiny italic, very subtle */
.rc-reason {
  font-size: 9px; color: var(--muted);
  font-style: italic; margin-bottom: 2px; line-height: 1.5;
}

/* Separator */
.routing-sep {
  height: 1px; background: var(--border);
  margin: 6px 0; opacity: 0.4;
}

/* Extras section (language, query, RAG) */
.rc-extras { display: flex; flex-direction: column; gap: 5px; }

/* Language + translated query */
.rc-query-block { display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.routing-row-val.routing-lang {
  font-size: 9px; font-weight: 600;
  padding: 1px 6px; border-radius: 8px; flex-shrink: 0;
  background: rgba(99,102,241,0.08); color: rgba(129,140,248,0.7);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.rc-translated-q {
  font-size: 10px; color: rgba(226,232,240,0.55);
  font-style: italic; min-width: 0; line-height: 1.5;
  word-break: break-word;
}

/* RAG block */
.rc-rag-block { display: flex; flex-direction: column; gap: 3px; }
.rc-rag-label {
  font-size: 8px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--faint);
  margin-bottom: 1px;
}
.routing-chips { display: flex; flex-direction: column; gap: 2px; }
.routing-chip {
  display: block; font-size: 9px; line-height: 1.45;
  color: rgba(99,102,241,0.55);
  background: rgba(99,102,241,0.04);
  border: 1px solid rgba(99,102,241,0.08);
  border-radius: 4px; padding: 2px 6px;
  word-break: break-word;
}

/* ── SME Section Cards ─────────────────────────── */
.msg.sme-card {
  background: linear-gradient(135deg, rgba(6,182,212,0.06) 0%, rgba(6,182,212,0.02) 100%);
  border: 1px solid rgba(6,182,212,0.22);
  border-radius: var(--radius-msg);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-self: stretch;
}

.sme-card-header {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.sme-badge {
  font-size: 9px; font-weight: 800; letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(6,182,212,0.18); color: #22d3ee;
  border-radius: 6px; padding: 2px 7px;
  flex-shrink: 0; margin-top: 2px;
}

.sme-card-title {
  display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0;
}

.sme-section-name {
  font-size: 14px; font-weight: 700; color: #e0f7fa;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.sme-chapter-name {
  font-size: 11px; color: var(--muted);
}

.sme-similarity {
  font-size: 10px; font-weight: 700; color: #22d3ee;
  flex-shrink: 0; margin-top: 2px;
}

.sme-summary {
  font-size: 12px; line-height: 1.6; color: #b0c4d8;
  border-left: 2px solid rgba(6,182,212,0.3);
  padding-left: 10px;
}

/* ── SME Seekable Player ────────────────────────── */
.sme-player {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(6,182,212,0.06);
  border: 1px solid rgba(6,182,212,0.18);
  border-radius: 10px;
  padding: 7px 10px;
}

.sme-pp-btn {
  background: rgba(6,182,212,0.18);
  border: 1px solid rgba(6,182,212,0.35);
  color: #22d3ee;
  border-radius: 50%;
  width: 32px; height: 32px;
  font-size: 13px;
  cursor: pointer;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s;
}
.sme-pp-btn:hover { background: rgba(6,182,212,0.3); }

.sme-time-cur,
.sme-time-dur {
  font-size: 11px;
  color: var(--muted);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  min-width: 30px;
}
.sme-time-cur { text-align: right; }

.sme-scrubber {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: rgba(6,182,212,0.2);
  outline: none;
  cursor: pointer;
}
.sme-scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #22d3ee;
  cursor: pointer;
  transition: transform 0.1s;
}
.sme-scrubber::-webkit-slider-thumb:hover { transform: scale(1.3); }
.sme-scrubber::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #22d3ee;
  border: none;
  cursor: pointer;
}

.sme-questions {
  display: flex; flex-direction: column; gap: 5px;
}

.sme-questions-label {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--muted);
  margin-bottom: 2px;
}

.sme-question-btn {
  background: rgba(6,182,212,0.07);
  border: 1px solid rgba(6,182,212,0.15);
  color: #7dd3fc;
  border-radius: 6px;
  padding: 5px 11px;
  font-size: 11px;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s;
}
.sme-question-btn:hover { background: rgba(6,182,212,0.15); }
.sme-question-btn.active-question {
  background: rgba(6,182,212,0.25);
  border-color: rgba(6,182,212,0.5);
  color: #e0f7fa;
}

/* ── SME Question Card (in conversation) ───────── */
.msg.sme-question-card {
  background: rgba(6,182,212,0.05);
  border: 1px solid rgba(6,182,212,0.2);
  border-left: 3px solid #22d3ee;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-self: flex-start;
  max-width: 85%;
}
.sme-q-label {
  font-size: 9px; font-weight: 800; letter-spacing: 0.1em;
  text-transform: uppercase; color: #22d3ee;
}
.sme-q-text {
  font-size: 13px; color: var(--text); line-height: 1.5;
}

/* ══════════════════════════════════════════════════
   Detail View Panel (third column)
══════════════════════════════════════════════════ */

.detail-panel {
  width: 320px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

/* ── Detail card (shared) ──────────────────────── */
.detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.detail-card-grow {
  flex: 1;
  min-height: 0;
}

.detail-card-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 10px 12px 8px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.detail-card-title svg { color: var(--muted); flex-shrink: 0; }

.detail-agent-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 1px 6px;
  border-radius: 8px;
  background: var(--accent-dim);
  color: var(--accent);
  margin-left: 4px;
  display: none;
}
.detail-agent-badge.visible { display: inline-block; }
.detail-agent-badge[data-agent="sme"]    { background: rgba(6,182,212,0.12); color: #22d3ee; }
.detail-agent-badge[data-agent="gaming"] { background: rgba(245,158,11,0.12); color: #f59e0b; }

.detail-chunk-count {
  margin-left: auto;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
}

/* ── Scrollable body ───────────────────────────── */
.detail-card-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.detail-card-body::-webkit-scrollbar { width: 3px; }
.detail-card-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.detail-empty {
  font-size: 11px;
  color: var(--muted);
  font-style: italic;
}

/* ── LLM response text ─────────────────────────── */
.detail-llm-text {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── RAG chunk cards ───────────────────────────── */
.detail-chunk {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.detail-chunk-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px 6px;
  border-bottom: 1px solid var(--border);
}

.detail-chunk-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.detail-chunk-section {
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-chunk-chapter {
  font-size: 10px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-chunk-sim {
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(34,197,94,0.08);
  color: var(--success);
}
.detail-chunk-sim.mid { background: rgba(245,158,11,0.08); color: var(--warning); }
.detail-chunk-sim.low { background: rgba(239,68,68,0.08); color: var(--error); }

.detail-chunk-body {
  padding: 8px 10px;
}

.detail-chunk-content {
  font-size: 11px;
  line-height: 1.65;
  color: #b0bec5;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 130px;
  overflow: hidden;
  position: relative;
}

.detail-chunk-content.expanded { max-height: none; }

.detail-chunk-toggle {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 10px;
  cursor: pointer;
  padding: 4px 0 0;
  display: block;
}
.detail-chunk-toggle:hover { opacity: 0.75; }

/* ── Chapter Progress Bar ──────────────────────── */
.chapter-progress-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: linear-gradient(90deg, rgba(6,182,212,0.07) 0%, rgba(6,182,212,0.02) 100%);
  border-bottom: 1px solid rgba(6,182,212,0.18);
  flex-shrink: 0;
  position: relative;
}
/* top accent line */
.chapter-progress-bar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, #22d3ee 0%, rgba(34,211,238,0.2) 100%);
}

.chapter-progress-left {
  display: flex; align-items: center; gap: 7px;
  flex-shrink: 0; min-width: 0;
}
.chapter-progress-badge {
  font-size: 8px; font-weight: 800; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #22d3ee;
  background: rgba(6,182,212,0.12);
  border: 1px solid rgba(6,182,212,0.22);
  padding: 2px 6px; border-radius: 4px;
  flex-shrink: 0;
}
.chapter-progress-title {
  font-size: 11px; font-weight: 600;
  color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 160px;
}

.chapter-progress-track {
  flex: 1;
  height: 6px;
  background: rgba(6,182,212,0.10);
  border: 1px solid rgba(6,182,212,0.15);
  border-radius: 4px;
  overflow: hidden;
}
.chapter-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #06b6d4, #22d3ee);
  border-radius: 4px;
  transition: width 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 10px rgba(6,182,212,0.55);
  position: relative;
  overflow: hidden;
}
.chapter-progress-shimmer {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.25) 50%, transparent 100%);
  animation: cp-shimmer 2s ease-in-out infinite;
}
@keyframes cp-shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

.chapter-progress-label {
  font-size: 11px; font-weight: 600;
  color: #22d3ee;
  white-space: nowrap; flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  font-family: var(--mono);
}
.chapter-progress-label .cpl-done  { font-weight: 800; }
.chapter-progress-label .cpl-sep   { color: var(--faint); margin: 0 1px; }
.chapter-progress-label .cpl-total { color: var(--muted); }
.chapter-progress-label .cpl-unit  { font-size: 9px; color: var(--faint); margin-left: 3px; }

/* ── Chapter Roadmap Dots ───────────────────────── */
.chapter-roadmap {
  display: flex; align-items: center; gap: 5px;
  flex-shrink: 0;
}
.roadmap-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(6,182,212,0.18);
  border: 1.5px solid rgba(6,182,212,0.30);
  transition: background 0.3s, border-color 0.3s, transform 0.2s;
  cursor: default;
}
.roadmap-dot--active {
  background: #22d3ee;
  border-color: #22d3ee;
  transform: scale(1.35);
  box-shadow: 0 0 6px rgba(34,211,238,0.6);
}
.roadmap-dot--done {
  background: rgba(6,182,212,0.45);
  border-color: rgba(6,182,212,0.45);
}

/* ── Current → Next label ───────────────────────── */
.chapter-current-next {
  font-size: 10px; font-weight: 500;
  color: var(--muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 200px; flex-shrink: 1;
}

/* ── Section Ready Gate card ────────────────────── */
.section-ready-gate {
  display: flex; flex-direction: column; gap: 8px;
  padding: 14px 16px;
  background: linear-gradient(135deg, rgba(6,182,212,0.06) 0%, rgba(6,182,212,0.02) 100%);
  border: 1px solid rgba(6,182,212,0.22);
  border-radius: 10px;
  max-width: 320px;
}
.srg-label {
  font-size: 9px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: #22d3ee;
}
.srg-name {
  font-size: 14px; font-weight: 600; color: var(--text);
  line-height: 1.3;
}
.srg-actions {
  display: flex; gap: 8px; margin-top: 2px;
}
.srg-btn {
  padding: 5px 14px; border-radius: 6px; border: 1px solid rgba(6,182,212,0.35);
  background: transparent; color: var(--muted);
  font-size: 12px; font-weight: 600; cursor: pointer;
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}
.srg-btn:hover { background: rgba(6,182,212,0.10); color: var(--text); }
.srg-btn--primary {
  background: rgba(6,182,212,0.15); color: #22d3ee;
  border-color: rgba(6,182,212,0.5);
}
.srg-btn--primary:hover { background: rgba(6,182,212,0.28); }

/* ── Prompts open button ───────────────────────── */
.prompts-open-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  background: var(--surface3);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  font-size: 11px;
  font-family: var(--font);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.prompts-open-btn:hover { color: var(--text); border-color: var(--accent); }

/* ── Prompts drawer backdrop ───────────────────── */
.prompts-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 200;
}
.prompts-backdrop.open { display: block; }

/* ── Prompts drawer ────────────────────────────── */
.prompts-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(520px, 100vw);
  height: 100dvh;
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 201;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.22s cubic-bezier(0.4,0,0.2,1);
  box-shadow: -24px 0 60px rgba(0,0,0,0.5);
}
.prompts-drawer.open { transform: translateX(0); }

.prompts-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  flex-shrink: 0;
}
.prompts-drawer-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.03em;
}
.prompts-drawer-actions { display: flex; align-items: center; gap: 8px; }

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  font-size: 11px;
  font-family: var(--font);
  padding: 3px 8px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.btn-ghost:hover { color: var(--error); border-color: var(--error); }

.prompts-close-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  border-radius: 4px;
  transition: color 0.15s;
}
.prompts-close-btn:hover { color: var(--text); }

.prompts-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.prompts-loading {
  color: var(--faint);
  font-size: 12px;
  text-align: center;
  padding: 24px 0;
}

/* ── Prompt selector row ───────────────────────── */
.prompt-selector-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.prompt-select {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  padding: 7px 10px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
}
.prompt-select:focus { border-color: var(--accent); }

.prompt-override-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent-dim);
  color: var(--accent);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  white-space: nowrap;
}

/* ── Description ───────────────────────────────── */
.prompt-desc {
  font-size: 10px;
  color: var(--faint);
  line-height: 1.5;
  min-height: 14px;
}

/* ── Textarea ──────────────────────────────────── */
.prompt-textarea {
  width: 100%;
  flex: 1;
  min-height: 300px;
  resize: vertical;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.6;
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s;
  box-sizing: border-box;
}
.prompt-textarea:focus { border-color: var(--accent); }

/* ── Editor footer ─────────────────────────────── */
.prompt-editor-footer {
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}

.btn-save-prompt {
  padding: 4px 12px;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: #fff;
  font-size: 11px;
  font-family: var(--font);
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-save-prompt:hover { opacity: 0.85; }
.btn-save-prompt:disabled { opacity: 0.4; cursor: default; }

.btn-reset-prompt {
  padding: 4px 10px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  font-size: 11px;
  font-family: var(--font);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.btn-reset-prompt:hover { color: var(--error); border-color: var(--error); }

.prompt-save-status {
  font-size: 10px;
  color: var(--success);
  margin-right: auto;
  opacity: 0;
  transition: opacity 0.2s;
}
.prompt-save-status.visible { opacity: 1; }

/* ── Responsive: stack on narrow screens ───────── */
@media (max-width: 780px) {
  .layout { flex-direction: column; padding: 8px; gap: 8px; max-height: none; height: auto; }
  .pipeline-panel { width: 100%; flex-direction: row; flex-wrap: wrap; overflow: visible; }
  .pipeline-diagram { flex: none; width: 100%; max-height: 280px; }
  .routing-card { width: 100%; }
  .detail-panel { width: 100%; }
}