:root {
  --bg: #ffffff;
  --side: #f6f7fb;
  --surface: #f3f4f8;
  --card: #ffffff;
  --ink: #0a0a0f;
  --sub: #5e6070;
  --line: rgba(10, 10, 15, 0.08);
  --accent: #3355ff;
  --accent-soft: #e8ecff;
  --accent-text: #2a46d8;
  --ok: #2f9e44;
  --ok-soft: #e6f6ea;
  --danger: #d6336c;
  --warn-soft: #fff4e5;
  --strong: #0a0a0f;
  --on-strong: #ffffff;
  --shadow: 0 10px 30px rgba(10, 10, 20, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #0b0c14;
    --side: #10111b;
    --surface: #1b1d2a;
    --card: #141622;
    --ink: #f4f5fa;
    --sub: #a6a8ba;
    --line: rgba(255, 255, 255, 0.08);
    --accent: #5b78ff;
    --accent-soft: #1d2552;
    --accent-text: #9db0ff;
    --ok: #51cf66;
    --ok-soft: #12301b;
    --warn-soft: #33270f;
    --strong: #f4f5fa;
    --on-strong: #0b0c14;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  }
}
* { box-sizing: border-box; }
#app { height: 100%; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--ink); font-family: Inter, system-ui, -apple-system, sans-serif; font-size: 15px; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--accent-text); }

/* Sign-in */
.signin { min-height: 100%; display: grid; place-items: center; padding: 24px; }
.signin-card { max-width: 880px; width: 100%; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.signin h1 { font-size: 44px; letter-spacing: -1.6px; margin: 10px 0 12px; line-height: 1.05; }
.signin p { color: var(--sub); font-size: 17px; line-height: 1.5; }
.steps { padding: 0; list-style: none; margin: 22px 0 0; display: grid; gap: 12px; }
.steps li { display: flex; gap: 12px; align-items: flex-start; font-size: 16px; }
.steps b { width: 26px; height: 26px; border-radius: 13px; background: var(--accent-soft); color: var(--accent-text); display: grid; place-items: center; font-size: 13px; flex: none; }
.pair { background: var(--surface); border-radius: 28px; padding: 28px; text-align: center; }
.qr { background: #fff; border-radius: 18px; padding: 14px; display: inline-block; }
.qr img { display: block; width: 200px; height: 200px; image-rendering: pixelated; }
.code { font-size: 40px; font-weight: 800; letter-spacing: 8px; margin: 18px 0 4px; }
.logo { font-weight: 800; font-size: 20px; letter-spacing: -0.6px; display: flex; align-items: center; gap: 8px; }
.logo span { color: var(--accent-text); font-weight: 700; font-size: 13px; background: var(--accent-soft); padding: 3px 9px; border-radius: 10px; }

/* Shell */
.shell { display: grid; grid-template-columns: 280px 1fr; height: 100%; }
.side { background: var(--side); border-right: 1px solid var(--line); padding: 20px 14px; display: flex; flex-direction: column; gap: 6px; overflow: auto; }
.side .logo { padding: 0 8px 16px; }
.side h4 { margin: 14px 8px 6px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--sub); }
.ai-item { display: flex; gap: 10px; align-items: center; padding: 9px 10px; border-radius: 14px; border: 0; background: none; text-align: left; width: 100%; }
.ai-item:hover { background: var(--surface); }
.ai-item.on { background: var(--card); box-shadow: var(--shadow); }
.ai-item .t { font-weight: 700; }
.ai-item .s { color: var(--sub); font-size: 13px; }
.face { width: 40px; height: 40px; border-radius: 20px; display: grid; place-items: center; flex: none; font-size: 20px; }
.face.big { width: 64px; height: 64px; border-radius: 32px; font-size: 32px; }
.me { margin-top: auto; padding: 12px 10px 0; border-top: 1px solid var(--line); font-size: 13px; color: var(--sub); display: grid; gap: 6px; }
.me b { color: var(--ink); font-size: 14px; }
.main { overflow: auto; }
.page { max-width: 920px; margin: 0 auto; padding: 28px 36px 60px; }
.head { display: flex; align-items: center; gap: 16px; }
.head h1 { margin: 0; font-size: 30px; letter-spacing: -1px; }
.head .sub { color: var(--sub); }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 12px; font-size: 13px; font-weight: 600; background: var(--surface); color: var(--sub); }
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.accent { background: var(--accent-soft); color: var(--accent-text); }
.tabs { display: flex; gap: 4px; margin: 22px 0 22px; border-bottom: 1px solid var(--line); }
.tabs button { border: 0; background: none; padding: 10px 14px; font-weight: 600; color: var(--sub); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button.on { color: var(--ink); border-color: var(--ink); }
.tabs .count { background: var(--accent); color: #fff; border-radius: 9px; font-size: 11px; padding: 1px 6px; margin-left: 4px; }

/* Forms */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label.f { display: grid; gap: 6px; margin-bottom: 18px; }
label.f > span { font-weight: 700; }
label.f > small, .hint { color: var(--sub); font-size: 13px; line-height: 1.45; }
input[type='text'], input[type='url'], textarea { width: 100%; border: 1.5px solid transparent; background: var(--surface); border-radius: 14px; padding: 11px 14px; outline: none; }
input:focus, textarea:focus { border-color: var(--accent); }
textarea { min-height: 90px; resize: vertical; line-height: 1.45; }
textarea.tall { min-height: 200px; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; }
.choice { border: 0; background: var(--surface); padding: 8px 14px; border-radius: 18px; font-weight: 600; }
.choice.on { background: var(--strong); color: var(--on-strong); }
.iconpick { width: 44px; height: 44px; border-radius: 22px; border: 2px solid transparent; background: var(--surface); font-size: 20px; }
.colorpick { width: 30px; height: 30px; border-radius: 15px; border: 3px solid transparent; }
.colorpick.on { border-color: var(--ink); }
.btn { border: 0; border-radius: 22px; padding: 11px 20px; font-weight: 700; background: var(--accent); color: #fff; }
.btn.soft { background: var(--accent-soft); color: var(--accent-text); }
.btn.ghost { background: var(--surface); color: var(--ink); }
.btn.danger { background: none; color: var(--danger); padding: 8px; }
.btn:disabled { opacity: 0.5; cursor: default; }
.row { display: flex; gap: 10px; align-items: center; }
.spacer { flex: 1; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 18px 20px; }
.cards { display: grid; gap: 14px; }
.switch { position: relative; width: 46px; height: 28px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span { position: absolute; inset: 0; background: var(--line); border-radius: 14px; transition: 0.15s; cursor: pointer; }
.switch span::before { content: ''; position: absolute; width: 22px; height: 22px; left: 3px; top: 3px; background: #fff; border-radius: 11px; transition: 0.15s; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); }
.switch input:checked + span { background: var(--ok); }
.switch input:checked + span::before { transform: translateX(18px); }
.error { color: var(--danger); font-weight: 600; margin: 8px 0; }
.saved { color: var(--ok); font-weight: 600; }
.meter { height: 8px; background: var(--surface); border-radius: 4px; overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--accent); }
.stat { font-size: 28px; font-weight: 800; letter-spacing: -0.8px; }
.stat-l { color: var(--sub); font-size: 13px; }
.kind { border: 2px solid var(--line); border-radius: 24px; padding: 22px; text-align: left; background: var(--card); display: grid; gap: 8px; }
.kind:hover { border-color: var(--accent); }
.kind h3 { margin: 0; font-size: 20px; }
.kind p { margin: 0; color: var(--sub); line-height: 1.5; }
.soon { opacity: 0.6; }

/* Test console */
.console { display: grid; grid-template-columns: 300px 1fr; gap: 20px; }
.ptt { width: 200px; height: 200px; border-radius: 100px; border: 0; background: var(--surface); display: grid; place-items: center; margin: 20px auto; font-weight: 700; font-size: 16px; user-select: none; }
.ptt.live { background: var(--accent); color: #fff; transform: scale(1.04); }
.ptt.ai { box-shadow: 0 0 0 6px var(--ok-soft); }
.ptt:disabled { opacity: 0.5; }
.trace { background: var(--surface); border-radius: 20px; padding: 14px; height: 480px; overflow: auto; display: flex; flex-direction: column; gap: 8px; }
.line { padding: 10px 12px; border-radius: 14px; background: var(--card); line-height: 1.45; }
.line small { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.6px; color: var(--sub); margin-bottom: 3px; }
.line.heard { margin-right: 40px; }
.line.said { margin-left: 40px; background: var(--accent-soft); }
.line.tool { border: 1.5px dashed var(--ok); background: var(--ok-soft); font-family: ui-monospace, Menlo, monospace; font-size: 13px; }
.line.sys { background: none; color: var(--sub); text-align: center; font-size: 13px; padding: 2px; }
.request { display: grid; gap: 6px; }
.request .who { font-weight: 700; }
.request .when { color: var(--sub); font-size: 13px; }
.new { animation: flash 2s ease-out; }
@keyframes flash { from { background: var(--ok-soft); } to { background: var(--card); } }
.empty { text-align: center; color: var(--sub); padding: 40px 10px; }
@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .side { display: none; }
  .signin-card, .console, .grid2 { grid-template-columns: 1fr; }
  .page { padding: 20px 16px; }
}