:root, html[data-theme="dark"] {
  --bg: #07070c;
  --bg-2: #0c0c14;
  --ink: #f4f1ea;
  --muted: rgba(244, 241, 234, 0.58);
  --faint: rgba(244, 241, 234, 0.34);
  --line: rgba(255, 255, 255, 0.08);
  --glass: rgba(255, 255, 255, 0.045);
  --glass-2: rgba(255, 255, 255, 0.07);
  --nav: rgba(7, 7, 12, 0.62);
  --violet: #8b7cff;
  --blue: #4cc3ff;
  --mint: #5ee4b0;
  --danger: #ff6b8a;
  --display: "Inter", ui-sans-serif, system-ui, sans-serif;
  --sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 22px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-theme="light"] {
  --bg: #f4f1ea;
  --bg-2: #ece7dc;
  --ink: #17141c;
  --muted: rgba(23, 20, 28, 0.58);
  --faint: rgba(23, 20, 28, 0.38);
  --line: rgba(23, 20, 28, 0.1);
  --glass: rgba(255, 255, 255, 0.62);
  --glass-2: rgba(255, 255, 255, 0.82);
  --nav: rgba(244, 241, 234, 0.78);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--ink); }
html { background: var(--bg); }
body {
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
::selection { background: rgba(139, 124, 255, 0.35); color: #fff; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 500px at 12% -10%, rgba(139, 124, 255, 0.18), transparent 55%),
    radial-gradient(700px 420px at 92% 8%, rgba(76, 195, 255, 0.12), transparent 50%),
    radial-gradient(600px 400px at 70% 110%, rgba(94, 228, 176, 0.08), transparent 55%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.045;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

#root { position: relative; z-index: 2; min-height: 100vh; }

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 28px;
  backdrop-filter: blur(18px);
  background: var(--nav);
  border-bottom: 1px solid var(--line);
}
.nav-settings {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.nav-icon {
  display: inline-flex;
  width: 15px;
  height: 15px;
}
.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 18px;
}
.wordmark .pulse {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 0 rgba(139, 124, 255, 0.7);
  animation: pulse 2.4s ease-out infinite;
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a, .nav-links button.ghost, .user-chip {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
}
.nav-links a.active, .nav-links a:hover, .nav-links button.ghost:hover {
  color: var(--ink);
  background: var(--glass);
  border-color: var(--line);
}
.user-chip { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); }
.avatar {
  width: 22px; height: 22px; border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--violet), var(--blue));
  font-size: 11px; font-weight: 700; color: #0b0b12;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform 0.16s var(--ease), box-shadow 0.2s ease, background 0.2s ease;
}
.btn:active { transform: translateY(1px) scale(0.98); }
.btn-primary {
  background: linear-gradient(135deg, #9a8cff, #5aa8ff);
  color: #0b0b12;
  box-shadow: 0 10px 40px rgba(139, 124, 255, 0.28);
}
.btn-primary:hover { box-shadow: 0 14px 48px rgba(139, 124, 255, 0.4); }
.btn-ghost {
  background: var(--glass);
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn-tiny {
  padding: 7px 11px;
  font-size: 12px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
}

.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.hero { padding: 72px 0 40px; text-align: center; }
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #5ee4b0;
  box-shadow: 0 0 0 0 rgba(94, 228, 176, 0.7);
  animation: pulse 1.8s ease-out infinite;
}
.hero h1 .grad {
  background: linear-gradient(135deg, #c4b5fd 0%, #8b5cf6 40%, #3b82f6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.045em;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 0.98;
  margin: 0 0 18px;
  background: linear-gradient(180deg, #fff 20%, rgba(255,255,255,0.62));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--muted);
  margin: 0 auto 28px;
  max-width: 560px;
}
.hero-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  overflow: hidden;
  backdrop-filter: blur(18px);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(139,124,255,0.45), rgba(76,195,255,0.12), transparent 55%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.card h3 { margin: 12px 0 8px; font-size: 18px; letter-spacing: -0.03em; }
.card p { margin: 0; color: var(--muted); line-height: 1.55; font-size: 14px; }
.emoji { font-size: 26px; }

.section { padding: 64px 0; }
.section h2 {
  font-family: var(--display);
  font-size: clamp(26px, 4vw, 40px);
  letter-spacing: -0.04em;
  margin: 0 0 24px;
}
.stat {
  text-align: left;
}
.stat strong {
  display: block;
  font-family: var(--display);
  font-size: 28px;
  letter-spacing: -0.04em;
  margin-bottom: 8px;
  background: linear-gradient(90deg, var(--violet), var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.scenarios { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.scenario {
  text-align: left;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  color: var(--ink);
  transition: transform 0.2s var(--ease), border-color 0.2s;
}
.scenario:hover { transform: translateY(-2px); border-color: rgba(139,124,255,0.45); }
.scenario small { display: block; color: var(--muted); margin-top: 6px; }

.footer {
  padding: 28px;
  text-align: center;
  color: var(--faint);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

.chat-shell {
  width: min(860px, calc(100% - 24px));
  margin: 0 auto;
  padding: 18px 0 168px;
  min-height: calc(100vh - 70px);
}
.chat-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.chat-top h1 {
  font-family: var(--display);
  font-size: 22px;
  letter-spacing: -0.04em;
  margin: 0;
}
.agent-menu { position: relative; z-index: 50; }
.burger {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--glass);
  display: grid;
  place-items: center;
  color: var(--ink);
}
.burger:hover { border-color: rgba(139,124,255,0.45); }
.burger-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}
.burger-lines i {
  display: block;
  height: 1.5px;
  width: 100%;
  background: currentColor;
  border-radius: 2px;
}
.agent-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: min(320px, 86vw);
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 10px;
  z-index: 60;
  box-shadow: 0 24px 70px rgba(0,0,0,0.42);
  backdrop-filter: blur(22px);
  opacity: 0;
  transform: translateY(-8px) scale(0.98);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
}
.agent-menu-panel.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.menu-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--glass);
  color: var(--ink);
  flex: 0 0 auto;
}
.menu-label {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.agent-menu-item,
.agent-history-item {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--ink);
  padding: 9px 10px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.agent-menu-item:hover,
.agent-history-item:hover { background: var(--glass-2); }
.agent-menu-item.danger { color: var(--danger); }
.agent-menu-item.danger .menu-icon { color: var(--danger); }
.agent-menu-item.back { color: var(--muted); }
.agent-menu-sep {
  height: 1px;
  background: var(--line);
  margin: 8px 8px;
}
.agent-menu-label {
  padding: 8px 12px 6px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 600;
}
.agent-history { max-height: 260px; overflow: auto; }
.agent-history-item {
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  padding: 10px 12px;
}
.agent-history-item strong {
  font-size: 13px;
  font-weight: 550;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}
.agent-history-item span { color: var(--muted); font-size: 11px; }
.il-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(12px);
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 80;
  opacity: 0;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  pointer-events: none;
}
.il-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
}
.toggle input { display: none; }
.switch {
  width: 36px; height: 20px; border-radius: 999px;
  background: #222333; position: relative; border: 1px solid var(--line);
}
.switch i {
  position: absolute; top: 2px; left: 2px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #888;
  transition: transform 0.2s var(--ease), background 0.2s;
}
.toggle input:checked + .switch { background: rgba(139,124,255,0.3); }
.toggle input:checked + .switch i { transform: translateX(16px); background: var(--violet); }

.thread { display: flex; flex-direction: column; gap: 14px; }
.bubble {
  max-width: min(72%, 560px);
  padding: 14px 16px;
  border-radius: 18px;
  line-height: 1.55;
  white-space: pre-wrap;
  animation: rise 0.45s var(--ease);
}
.bubble.user {
  align-self: flex-end;
  background: linear-gradient(180deg, rgba(139,124,255,0.28), rgba(76,195,255,0.12));
  border: 1px solid rgba(139,124,255,0.28);
}
.bubble.agent {
  align-self: flex-start;
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.bubble .who { display: block; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.bubble.agent .md { white-space: normal; }
.bubble.agent .md p { margin: 0 0 10px; color: var(--ink); }
.bubble.agent .md h1, .bubble.agent .md h2, .bubble.agent .md h3 { font-size: 15px; margin: 14px 0 6px; }
.bubble.agent .md ul, .bubble.agent .md ol { margin: 0 0 10px; padding-left: 18px; color: var(--muted); }
.bubble.agent .md code {
  font-family: var(--mono);
  font-size: 12px;
  background: rgba(0,0,0,0.35);
  padding: 1px 5px;
  border-radius: 6px;
}
.bubble.agent .md pre {
  background: #07070c;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 12px;
}

.composer {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  width: min(860px, calc(100% - 24px));
  display: flex;
  gap: 10px;
  padding: 10px;
  background: rgba(12,12,20,0.86);
  border: 1px solid var(--line);
  border-radius: 20px;
  backdrop-filter: blur(20px);
  z-index: 15;
}
.mic-btn {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--glass);
  color: var(--ink);
  display: grid;
  place-items: center;
}
.mic-btn:hover { border-color: rgba(139,124,255,0.5); }
.mic-btn.connecting, .mic-btn.listening, .mic-btn.speaking {
  background: linear-gradient(135deg, rgba(139,124,255,0.35), rgba(76,195,255,0.2));
  border-color: rgba(139,124,255,0.55);
}
.mic-btn.listening { box-shadow: 0 0 0 4px rgba(94,228,176,0.18); }
.mic-btn.speaking { box-shadow: 0 0 0 4px rgba(139,124,255,0.22); }
.mic-btn.error { color: var(--danger); }
.voice-frame {
  position: fixed;
  width: 1px;
  height: 1px;
  opacity: 0.01;
  pointer-events: none;
  border: 0;
  left: -10px;
  bottom: -10px;
}

.voice-dock {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  padding: 14px 16px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 20px;
  backdrop-filter: blur(16px);
}
.voice-orb {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(139,124,255,0.35), rgba(76,195,255,0.18));
  display: grid;
  place-items: center;
  position: relative;
  flex: 0 0 46px;
  color: var(--ink);
}
.voice-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid rgba(139,124,255,0.35);
  opacity: 0;
}
.voice-orb.connecting .voice-ring,
.voice-orb.listening .voice-ring,
.voice-orb.speaking .voice-ring {
  animation: voicePulse 1.8s ease-out infinite;
  opacity: 1;
}
.voice-orb.speaking { background: linear-gradient(135deg, rgba(139,124,255,0.7), rgba(76,195,255,0.4)); }
.voice-orb.listening { background: linear-gradient(135deg, rgba(94,228,176,0.45), rgba(76,195,255,0.25)); }
.voice-ring.delay { animation-delay: 0.5s; }
.voice-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.voice-copy strong { font-size: 14px; letter-spacing: -0.02em; }
.voice-copy span { color: var(--muted); font-size: 12px; }
.voice-actions { flex: 0 0 auto; }
.voice-end { border-color: rgba(255,107,138,0.35); color: var(--danger); }
@keyframes voicePulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.45); opacity: 0; }
}

.composer textarea {
  flex: 1;
  resize: none;
  min-height: 48px;
  max-height: 140px;
  background: transparent;
  border: 0;
  outline: none;
  padding: 12px 10px;
}
.hint { color: var(--faint); font-size: 12px; margin-top: 8px; }

.overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(4, 4, 8, 0.72);
  backdrop-filter: blur(18px);
  display: grid;
  place-items: center;
  padding: 20px;
  animation: fade 0.35s var(--ease);
}
.glass {
  width: min(560px, 100%);
  min-height: 420px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 28px;
  padding: 28px 26px 22px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.45), 0 0 0 1px rgba(139,124,255,0.12);
}
.glass::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(139,124,255,0.55), rgba(76,195,255,0.2), transparent 60%);
  opacity: 0.55;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
}
.il-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}
.il-mark {
  font-family: var(--display);
  font-weight: 800;
  display: flex;
  gap: 8px;
  align-items: center;
}
.skip {
  background: transparent;
  border: 0;
  color: var(--faint);
  font-size: 12px;
  padding: 6px 8px;
}
.skip:hover { color: var(--ink); }
.module { animation: slide 0.55s var(--ease); }
.module h2 {
  font-family: var(--display);
  font-size: 28px;
  letter-spacing: -0.04em;
  margin: 0 0 18px;
}
.choices { display: flex; flex-wrap: wrap; gap: 10px; }
.or-badge {
  text-align: center;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 0 22px;
}
.choice {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 14px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  transition: transform 0.16s var(--ease), background 0.2s, border-color 0.2s;
}
.choice:hover { transform: translateY(-1px); border-color: rgba(139,124,255,0.5); }
.choice.on {
  background: rgba(139,124,255,0.18);
  border-color: rgba(139,124,255,0.7);
  box-shadow: 0 0 0 4px rgba(139,124,255,0.12);
}
.il-next { margin-top: 22px; }
.steps { display: grid; gap: 12px; }
.step {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  opacity: 0;
  transform: translateY(8px);
  animation: stepin 0.5s var(--ease) forwards;
}
.step.live { color: var(--ink); }
.dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 0 rgba(139,124,255,0.6);
  animation: pulse 1.4s ease-out infinite;
  flex: none;
}
.dot.done { background: var(--mint); animation: none; box-shadow: none; }
.dot.wait { background: #2a2a38; animation: none; }

.flip { perspective: 900px; min-height: 180px; }
.flip-inner {
  position: relative;
  transform-style: preserve-3d;
  animation: flip 0.7s var(--ease) forwards;
  min-height: 180px;
}
.flip-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  background: rgba(255,255,255,0.04);
  display: grid;
  place-items: center;
  text-align: center;
}
.flip-face.back { transform: rotateY(180deg); }
.flip-face p { font-size: 22px; letter-spacing: -0.03em; margin: 0; }

.dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}
.dots span {
  width: 7px; height: 7px; border-radius: 50%;
  background: #2c2c3a;
}
.dots span.on { background: var(--violet); box-shadow: 0 0 12px var(--violet); }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 16px;
}
.metric {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}
.metric span { display: block; color: var(--muted); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.metric strong { display: block; font-family: var(--display); font-size: 26px; margin: 6px 0 4px; }
.metric .up { color: var(--mint); font-size: 12px; }
.caption { color: var(--muted); margin-top: 10px; font-size: 13px; }
.picks { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0 4px; }
.picks button {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--muted);
}
.picks button.on { color: var(--mint); border-color: rgba(94,228,176,0.4); }

.sdk { padding: 48px 0 80px; }
.sdk h1 {
  font-family: var(--display);
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: -0.045em;
  margin: 0 0 10px;
}
.code {
  background: #050509;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  color: #d7d3ff;
  margin: 22px 0 32px;
}
.tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.tabs button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 12px;
}
.tabs button.on { color: var(--ink); border-color: rgba(139,124,255,0.5); background: rgba(139,124,255,0.12); }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 48px 12px 80px;
}
.empty h2 { font-family: var(--display); color: var(--ink); letter-spacing: -0.04em; }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(139,124,255,0.55); }
  100% { box-shadow: 0 0 0 14px rgba(139,124,255,0); }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes slide {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes stepin {
  to { opacity: 1; transform: none; }
}
@keyframes flip {
  from { transform: rotateY(0); }
  to { transform: rotateY(180deg); }
}

.bubble.compact { padding: 10px 14px; }
.bubble.compact .who { margin-bottom: 4px; }

.settings-page { padding-top: 36px; padding-bottom: 80px; max-width: 820px; }
.settings-hero { margin-bottom: 28px; }
.settings-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.settings-block {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 16px;
  backdrop-filter: blur(18px);
}
.settings-block h2 {
  margin: 0 0 6px;
  font-size: 16px;
  letter-spacing: -0.03em;
}
.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
}
.choice-grid.models { grid-template-columns: 1fr; }
.choice-card {
  text-align: left;
  background: var(--glass-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--ink);
}
.choice-card span { color: var(--muted); font-size: 12px; }
.choice-card code {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  margin-top: 6px;
}
.choice-card.on {
  border-color: rgba(139, 124, 255, 0.55);
  box-shadow: 0 0 0 1px rgba(139, 124, 255, 0.25), 0 10px 30px rgba(139, 124, 255, 0.12);
}
.pref-list { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.pref-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.pref-row:last-child { border-bottom: 0; }
.pref-row strong { display: block; font-size: 14px; }
.pref-row span { display: block; color: var(--muted); font-size: 12px; margin-top: 3px; }
.switch-btn {
  width: 42px;
  height: 24px;
  border-radius: 999px;
  border: 0;
  background: rgba(255,255,255,0.12);
  position: relative;
  flex-shrink: 0;
}
.switch-btn i {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s var(--ease);
}
.switch-btn.on { background: linear-gradient(135deg, var(--violet), var(--blue)); }
.switch-btn.on i { transform: translateX(18px); }
.history-list { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.history-item {
  display: flex;
  align-items: stretch;
  gap: 8px;
  background: var(--glass-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
.history-open {
  flex: 1;
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--ink);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.history-open strong {
  font-size: 14px;
  letter-spacing: -0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-open span { color: var(--muted); font-size: 12px; }
.history-del {
  border: 0;
  background: transparent;
  color: var(--faint);
  padding: 0 16px;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.history-del:hover { color: var(--danger); }

html[data-theme="light"] body::before {
  background:
    radial-gradient(900px 500px at 12% -10%, rgba(139, 124, 255, 0.16), transparent 55%),
    radial-gradient(700px 420px at 92% 8%, rgba(59, 130, 246, 0.1), transparent 50%),
    radial-gradient(600px 400px at 70% 110%, rgba(16, 185, 129, 0.08), transparent 55%);
}
html[data-theme="light"] .nav { color: var(--ink); }
html[data-theme="light"] .composer {
  background: rgba(244, 241, 234, 0.88);
}

@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .grid-3, .grid-4, .scenarios, .metrics { grid-template-columns: 1fr; }
  .nav { padding: 12px 16px; }
  .hero { padding-top: 42px; }
  .bubble { max-width: 92%; }
  .glass { min-height: auto; }
  .choice-grid { grid-template-columns: 1fr; }
  .nav-links { flex-wrap: wrap; justify-content: flex-end; }
  .voice-dock { flex-wrap: wrap; }
  .voice-actions { width: 100%; }
  .voice-actions .btn { width: 100%; }
}