:root {
    --c-bg: #030308;
    --c-surface: rgba(255,255,255,0.045);
    --c-surface-hover: rgba(255,255,255,0.08);
    --c-border: rgba(255,255,255,0.07);
    --c-text: #c8cad0;
    --c-text-dim: #5a5d66;
    --c-text-bright: #eef0f4;

    /* State palette */
    --c-listen: #4ade80;
    --c-listen-dim: rgba(74,222,128,0.12);
    --c-process: #f59e0b;
    --c-process-dim: rgba(245,158,11,0.12);
    --c-speak: #818cf8;
    --c-speak-dim: rgba(129,140,248,0.12);
    --c-loading: #3a3d46;
    --c-loading-dim: rgba(58,61,70,0.12);

    /* Active state (set by JS) */
    --glow: var(--c-loading);
    --glow-dim: var(--c-loading-dim);

    --font-body: 'Instrument Sans', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
    --radius: 18px;
  }

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

  body {
    font-family: var(--font-body);
    background: var(--c-bg);
    color: var(--c-text);
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    position: relative;
  }

  /* ── Ambient background: grid, orbs, scanline ── */
  .fx-grid {
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
    background-size: 62px 62px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 78%);
    pointer-events: none;
    z-index: 0;
  }

  .fx-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
    z-index: 0;
    transition: background 0.8s ease;
  }

  .fx-orb-a {
    top: -14%;
    left: 8%;
    width: 480px;
    height: 480px;
    background: var(--glow-dim);
    opacity: 0.55;
    animation: orb-drift-a 22s ease-in-out infinite;
  }

  .fx-orb-b {
    bottom: -18%;
    right: 4%;
    width: 520px;
    height: 520px;
    background: rgba(129,140,248,0.07);
    opacity: 0.5;
    animation: orb-drift-b 28s ease-in-out infinite;
  }

  @keyframes orb-drift-a {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(60px, 40px) scale(1.12); }
  }
  @keyframes orb-drift-b {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-70px, -50px) scale(1.08); }
  }

  .fx-scan {
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
      to bottom,
      transparent 0 3px,
      rgba(255,255,255,0.012) 3px 4px
    );
    pointer-events: none;
    z-index: 1;
    opacity: 0.6;
  }

  /* ── Header ── */
  header {
    width: 100%;
    max-width: 100%;
    padding: 12px 22px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 3;
    flex-shrink: 0;
  }

  .logo { display: flex; align-items: center; gap: 12px; }

  .logo-mark {
    position: relative;
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
  }

  .logo-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1.5px solid var(--glow);
    border-top-color: transparent;
    border-right-color: transparent;
    opacity: 0.85;
    transition: border-color 0.4s ease;
    animation: logo-spin 6s linear infinite;
  }

  @keyframes logo-spin { to { transform: rotate(360deg); } }

  .logo-core {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--glow);
    box-shadow: 0 0 14px var(--glow), 0 0 4px var(--glow);
    transition: background 0.4s ease, box-shadow 0.4s ease;
  }

  .logo-text { display: flex; flex-direction: column; gap: 1px; }

  .logo h1 {
    font-family: var(--font-mono);
    font-size: 17px;
    font-weight: 600;
    color: var(--c-text-bright);
    letter-spacing: 0.22em;
  }

  .logo-accent {
    color: var(--glow);
    transition: color 0.4s ease;
  }

  .logo-sub {
    font-family: var(--font-mono);
    font-size: 8.5px;
    font-weight: 500;
    color: var(--c-text-dim);
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }

  .header-right { display: flex; align-items: center; gap: 12px; }

  .model-label {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    color: var(--c-text-dim);
    letter-spacing: 0.06em;
    padding: 4px 10px;
    border: 1px solid var(--c-border);
    border-radius: 100px;
  }

  .status-pill {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    padding: 6px 13px;
    border-radius: 100px;
    background: var(--c-surface);
    color: var(--c-text-dim);
    display: flex;
    align-items: center;
    gap: 7px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid var(--c-border);
    transition: color 0.3s, background 0.3s, border-color 0.3s, box-shadow 0.3s;
  }

  .status-pill::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--c-text-dim);
    transition: background 0.3s, box-shadow 0.3s;
  }
  .status-pill.connected {
    color: var(--c-listen); background: var(--c-listen-dim);
    border-color: rgba(74,222,128,0.22); box-shadow: 0 0 18px rgba(74,222,128,0.12);
  }
  .status-pill.connected::before { background: var(--c-listen); box-shadow: 0 0 8px var(--c-listen); }
  .status-pill.disconnected { color: #f87171; background: rgba(248,113,113,0.1); border-color: rgba(248,113,113,0.2); }
  .status-pill.disconnected::before { background: #f87171; }
  .status-pill.processing { color: var(--c-process); background: var(--c-process-dim); border-color: rgba(245,158,11,0.22); }
  .status-pill.processing::before { background: var(--c-process); box-shadow: 0 0 8px var(--c-process); }

  /* ── App grid: video stage fills the left column, chat the right ── */
  .app-grid {
    flex: 1;
    width: 100%;
    max-width: 100%;
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(360px, 0.85fr);
    gap: 20px;
    padding: 14px 22px 18px;
    z-index: 3;
    min-height: 0;
    align-items: stretch;
    overflow: hidden;
  }

  .stage {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    /* Leave the video to absorb all height the waveform and controls don't. */
    height: 100%;
  }

  /* ── Webcam viewport ── */
  .viewport-wrap {
    position: relative;
    width: 100%;
    max-width: 100%;
    flex: 1;              /* fills the column's remaining height */
    min-height: 0;
    border-radius: var(--radius);
  }

  .viewport-wrap::before,
  .viewport-wrap::after,
  .viewport-glow {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: calc(var(--radius) + 2px);
    pointer-events: none;
    transition: box-shadow 0.4s ease, opacity 0.4s ease;
  }

  .viewport-wrap::before {
    box-shadow: inset 0 0 30px var(--glow-dim), 0 0 15px var(--glow-dim);
    z-index: 3;
    animation: glow-breathe-1 3s ease-in-out infinite;
  }
  .viewport-wrap::after {
    box-shadow: 0 0 40px 8px var(--glow-dim);
    z-index: 2;
    animation: glow-breathe-2 4s ease-in-out infinite;
  }
  .viewport-glow {
    inset: -6px;
    border-radius: calc(var(--radius) + 4px);
    box-shadow: 0 0 80px 20px var(--glow-dim);
    z-index: 1;
    animation: glow-breathe-3 5s ease-in-out infinite;
  }

  @keyframes glow-breathe-1 { 0%,100% { opacity: 0.6; } 50% { opacity: 1; } }
  @keyframes glow-breathe-2 { 0%,100% { opacity: 0.4; } 50% { opacity: 0.8; } }
  @keyframes glow-breathe-3 { 0%,100% { opacity: 0.2; } 50% { opacity: 0.5; } }

  .viewport-wrap.processing::before { animation-duration: 0.8s; }
  .viewport-wrap.processing::after { animation-duration: 1.1s; }
  .viewport-wrap.processing .viewport-glow { animation-duration: 1.4s; opacity: 0.3; }

  .viewport-wrap.speaking::before,
  .viewport-wrap.speaking::after,
  .viewport-wrap.speaking .viewport-glow { animation: none; }

  .viewport-wrap.loading::before { animation-duration: 5s; opacity: 0.3; }
  .viewport-wrap.loading::after { animation-duration: 6s; opacity: 0.2; }
  .viewport-wrap.loading .viewport-glow { animation-duration: 7s; opacity: 0.1; }

  video {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius);
    background: #07070d;
    transform: scaleX(-1);
    position: relative;
    z-index: 2;
    transition: opacity 0.3s ease;
  }

  /* HUD corner brackets */
  .viewport-corners { position: absolute; inset: 10px; z-index: 4; pointer-events: none; }
  .viewport-corners span {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 1.5px solid var(--glow);
    opacity: 0.55;
    transition: border-color 0.4s ease;
  }
  .viewport-corners span:nth-child(1) { top: 0; left: 0; border-right: 0; border-bottom: 0; border-radius: 6px 0 0 0; }
  .viewport-corners span:nth-child(2) { top: 0; right: 0; border-left: 0; border-bottom: 0; border-radius: 0 6px 0 0; }
  .viewport-corners span:nth-child(3) { bottom: 0; left: 0; border-right: 0; border-top: 0; border-radius: 0 0 0 6px; }
  .viewport-corners span:nth-child(4) { bottom: 0; right: 0; border-left: 0; border-top: 0; border-radius: 0 0 6px 0; }

  .viewport-hud {
    position: absolute;
    left: 16px;
    bottom: 14px;
    right: 16px;
    display: flex;
    justify-content: space-between;
    z-index: 4;
    pointer-events: none;
  }

  .hud-tag {
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(238,240,244,0.7);
    background: rgba(3,3,8,0.55);
    backdrop-filter: blur(6px);
    padding: 4px 9px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.08);
  }

  .hud-lang { color: var(--glow); border-color: var(--glow-dim); }

  .hud-brain { color: var(--c-speak); border-color: rgba(129,140,248,0.28); }

  /* ── Waveform ── */
  .waveform-wrap {
    width: 100%;
    max-width: 100%;
    height: 58px;
    margin-top: 16px;
    flex-shrink: 0;
    position: relative;
    background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.012), transparent);
    border-radius: 12px;
  }

  #waveform { width: 100%; height: 100%; display: block; }

  /* ── Chat panel (right column) ── */
  .chat-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    height: 100%;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255,255,255,0.028), rgba(255,255,255,0.012));
    backdrop-filter: blur(10px);
    overflow: hidden;
  }

  .panel-head {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 14px 16px 12px;
    border-bottom: 1px solid var(--c-border);
    flex-shrink: 0;
  }

  .panel-title {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-text-bright);
  }

  .panel-hint {
    font-size: 11px;
    color: var(--c-text-dim);
  }

  /* ── Live host load monitor ── */
  .sysmon {
    margin-left: auto;
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 120px;
  }

  .sysmon-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.06em;
  }

  .sysmon-label {
    color: var(--c-text-dim);
    width: 24px;
    text-transform: uppercase;
  }

  .sysmon-bar {
    flex: 1;
    height: 4px;
    border-radius: 2px;
    background: rgba(255,255,255,0.07);
    overflow: hidden;
  }

  .sysmon-fill {
    height: 100%;
    width: 0%;
    border-radius: 2px;
    background: var(--c-listen);
    transition: width 0.5s ease, background 0.4s ease;
  }

  .sysmon-fill.warn { background: var(--c-process); }
  .sysmon-fill.hot  { background: #f87171; }

  .sysmon-val {
    color: var(--c-text-dim);
    width: 30px;
    text-align: right;
    font-variant-numeric: tabular-nums;
  }

  /* ── Transcript ── */
  .transcript {
    width: 100%;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    margin-top: 0;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 9px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.08) transparent;
    mask-image: linear-gradient(to bottom, transparent 0%, black 14px, black 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 14px, black 100%);
  }

  .transcript::-webkit-scrollbar { width: 4px; }
  .transcript::-webkit-scrollbar-track { background: transparent; }
  .transcript::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 2px; }

  /* ── Text chat input ── */
  .chat-input {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    padding: 12px 14px;
    border-top: 1px solid var(--c-border);
    flex-shrink: 0;
    background: rgba(0,0,0,0.18);
  }

  #chatText {
    flex: 1;
    resize: none;
    max-height: 140px;
    padding: 11px 13px;
    border-radius: 12px;
    border: 1px solid var(--c-border);
    background: rgba(255,255,255,0.045);
    color: var(--c-text-bright);
    font-family: var(--font-body);
    font-size: 13.5px;
    line-height: 1.5;
    outline: none;
    transition: border-color 0.2s, background 0.2s;
    scrollbar-width: thin;
  }

  #chatText::placeholder { color: var(--c-text-dim); }
  #chatText:focus {
    border-color: rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.07);
  }

  .send-btn {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    border: 1px solid rgba(129,140,248,0.25);
    background: var(--c-speak-dim);
    color: var(--c-speak);
    cursor: pointer;
    transition: background 0.2s, transform 0.12s, border-color 0.2s;
  }

  .send-btn svg { width: 17px; height: 17px; }
  .send-btn:hover { background: rgba(129,140,248,0.2); border-color: rgba(129,140,248,0.4); }
  .send-btn:active { transform: scale(0.94); }
  .send-btn:disabled { opacity: 0.4; cursor: default; }

  .msg {
    padding: 11px 15px;
    border-radius: 14px;
    font-size: 13.5px;
    line-height: 1.55;
    max-width: 85%;
    animation: msg-in 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  }

  @keyframes msg-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .msg.user {
    align-self: flex-end;
    background: linear-gradient(135deg, rgba(74,222,128,0.12), rgba(74,222,128,0.05));
    color: #b6ddc5;
    border: 1px solid rgba(74,222,128,0.14);
    border-bottom-right-radius: 5px;
  }

  .msg.assistant {
    align-self: flex-start;
    background: var(--c-surface);
    color: var(--c-text);
    border: 1px solid var(--c-border);
    border-bottom-left-radius: 5px;
  }

  .msg .meta {
    font-family: var(--font-mono);
    font-size: 9.5px;
    color: var(--c-text-dim);
    margin-top: 6px;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.04em;
  }

  /* Mode chip */
  .mode-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px 6px 14px;
    border-radius: 100px;
    background: var(--c-speak-dim);
    color: var(--c-speak);
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.06em;
    border: 1px solid rgba(129,140,248,0.2);
  }
  .mode-chip[hidden] { display: none; }

  .mode-stop {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    padding: 3px 10px;
    border: 1px solid rgba(129,140,248,0.25);
    border-radius: 100px;
    background: transparent;
    color: var(--c-speak);
    cursor: pointer;
    transition: background 0.2s;
  }
  .mode-stop:hover { background: rgba(129,140,248,0.15); }

  /* Delegation + timer chips */
  .delegation-chip, .timer-chip {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    border-radius: 100px;
    font-size: 12px;
    animation: msg-in 0.28s ease-out;
    border: 1px solid transparent;
  }
  .delegation-chip { background: var(--c-process-dim); color: var(--c-process); border-color: rgba(245,158,11,0.18); }
  .delegation-chip .loading-dots span { background: var(--c-process); }
  .delegation-chip.parked .loading-dots { display: none; }
  .delegation-chip.parked { color: var(--c-listen); background: var(--c-listen-dim); border-color: rgba(74,222,128,0.18); }

  .timer-chip { background: var(--c-listen-dim); color: var(--c-listen); border-color: rgba(74,222,128,0.18); }
  .timer-chip .countdown { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-weight: 600; }

  .timer-cancel {
    border: none; background: none; color: inherit;
    opacity: 0.6; cursor: pointer; font-size: 11px; padding: 0 2px;
  }
  .timer-cancel:hover { opacity: 1; }

  .loading-dots { display: inline-flex; gap: 4px; align-items: center; height: 1.55em; }
  .loading-dots span {
    width: 6px; height: 6px; border-radius: 50%;
    background: rgba(74,222,128,0.5);
    animation: dot-bounce 1.2s ease-in-out infinite;
  }
  .loading-dots span:nth-child(2) { animation-delay: 0.15s; }
  .loading-dots span:nth-child(3) { animation-delay: 0.3s; }

  @keyframes dot-bounce {
    0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
    30% { opacity: 1; transform: translateY(-4px); }
  }

  /* ── Controls bar ── */
  .controls {
    width: 100%;
    max-width: 100%;
    padding: 14px 0 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-shrink: 0;
    z-index: 3;
  }

  .controls-left, .controls-right { display: flex; align-items: center; gap: 10px; }
  .controls-right { margin-left: auto; }

  .ctrl-btn {
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 600;
    padding: 9px 15px;
    border: 1px solid var(--c-border);
    border-radius: 11px;
    background: var(--c-surface);
    color: var(--c-text-dim);
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 7px;
    backdrop-filter: blur(8px);
  }

  .ctrl-btn:hover { background: var(--c-surface-hover); color: var(--c-text); border-color: rgba(255,255,255,0.13); }
  .ctrl-btn.active {
    background: var(--c-listen-dim);
    color: var(--c-listen);
    border-color: rgba(74,222,128,0.22);
  }

  .ctrl-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: currentColor;
    opacity: 0.5;
    transition: opacity 0.2s, box-shadow 0.2s;
  }
  .ctrl-btn.active .ctrl-dot { opacity: 1; box-shadow: 0 0 8px var(--c-listen); }

  .ctrl-btn.disabled {
    opacity: 0.45;
    cursor: not-allowed;
  }
  .ctrl-btn.disabled.active {
    background: var(--c-surface);
    color: var(--c-text-dim);
    border-color: var(--c-border);
  }
  .ctrl-btn.disabled.active .ctrl-dot { opacity: 0.4; box-shadow: none; }

  /* ── Dropdown pickers (brain + voice) ── */
  .picker { position: relative; }

  .picker-btn { text-transform: none; letter-spacing: 0.03em; }
  .picker-icon { width: 13px; height: 13px; opacity: 0.85; flex-shrink: 0; }
  .picker-caret { width: 10px; height: 10px; opacity: 0.6; transition: transform 0.2s; }
  .picker.open .picker-caret { transform: rotate(180deg); }
  .picker.open .picker-btn {
    color: var(--c-text-bright);
    border-color: rgba(255,255,255,0.16);
    background: var(--c-surface-hover);
  }

  .picker-menu {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 0;
    min-width: 230px;
    max-height: 320px;
    overflow-y: auto;
    padding: 6px;
    border-radius: 14px;
    background: rgba(10,10,18,0.94);
    backdrop-filter: blur(20px) saturate(1.4);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 50px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.03);
    z-index: 20;
    animation: menu-in 0.18s cubic-bezier(0.22, 1, 0.36, 1);
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
  }
  .picker-menu[hidden] { display: none; }

  @keyframes menu-in {
    from { opacity: 0; transform: translateY(6px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
  }

  .picker-menu::-webkit-scrollbar { width: 4px; }
  .picker-menu::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

  .picker-menu-title {
    font-family: var(--font-mono);
    font-size: 8.5px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-text-dim);
    padding: 7px 10px 5px;
  }

  .picker-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 9px 11px;
    border: none;
    border-radius: 9px;
    background: transparent;
    color: var(--c-text);
    font-family: var(--font-body);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s;
  }

  .picker-item:hover { background: rgba(255,255,255,0.06); }
  .picker-item.selected { background: var(--glow-dim); color: var(--c-text-bright); }

  .picker-item .tick {
    margin-left: auto;
    color: var(--glow);
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.15s;
  }
  .picker-item.selected .tick { opacity: 1; }

  .picker-item .item-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
  .picker-item .item-label { font-size: 13px; }
  .picker-item .item-detail {
    font-family: var(--font-mono);
    font-size: 9.5px;
    color: var(--c-text-dim);
    letter-spacing: 0.02em;
  }
  .picker-item .item-detail.warn { color: var(--c-process); }

  /* ── Wake-word chip: asleep vs listening ── */
  .wake-chip {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 6px 12px;
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    border: 1px solid var(--c-border);
    background: var(--c-surface);
    color: var(--c-text-dim);
    transition: color 0.3s, background 0.3s, border-color 0.3s;
  }
  .wake-chip[hidden] { display: none; }
  .wake-chip.awake {
    color: var(--c-listen);
    background: var(--c-listen-dim);
    border-color: rgba(74,222,128,0.22);
  }
  .wake-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--c-text-dim);
    transition: background 0.3s, box-shadow 0.3s;
  }
  .wake-chip.awake .wake-dot { background: var(--c-listen); box-shadow: 0 0 8px var(--c-listen); }
  .wake-hint {
    text-transform: none;
    letter-spacing: 0.02em;
    opacity: 0.7;
    font-weight: 500;
  }
  .wake-chip.awake .wake-hint { display: none; }

  .state-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-text-dim);
    transition: color 0.3s;
  }

  .state-indicator .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--glow);
    transition: background 0.3s;
    box-shadow: 0 0 8px var(--glow-dim);
  }
  .state-indicator .dot.listening { animation: dot-pulse 2s ease-in-out infinite; }
  .state-indicator .dot.processing { animation: dot-pulse 0.6s ease-in-out infinite; }
  .state-indicator .dot.speaking { animation: dot-pulse 1s ease-in-out infinite; }
  .state-indicator .dot.loading { animation: dot-pulse 2.5s ease-in-out infinite; }

  @keyframes dot-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
  }

  /* Narrow screens: stack the columns and let controls wrap cleanly */
  @media (max-width: 1080px) {
    .app-grid {
      grid-template-columns: 1fr;
      grid-template-rows: minmax(0, 1fr) minmax(240px, 0.9fr);
      gap: 16px;
      padding: 14px 18px 16px;
    }
    /* When stacked the stage is a grid row, not the full page height. */
    .stage { height: auto; }
    .viewport-wrap { aspect-ratio: 16/9; flex: 0 1 auto; }
  }

  @media (max-width: 560px) {
    header { padding: 14px 16px 0; }
    header .logo-sub { display: none; }
    .app-grid { padding: 12px 12px 14px; }
    .controls { flex-wrap: wrap; justify-content: center; }
    .controls-left, .controls-right { margin-left: 0; flex-wrap: wrap; justify-content: center; }
    .header-right .model-label { display: none; }
    .msg { max-width: 92%; }
  }