:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 18px;
  line-height: 1.5;
  color: #f8fafc;
  background: #070b12;
  --surface: #101828;
  --surface-raised: #172033;
  --border: #344054;
  --text-muted: #cbd5e1;
  --accent: #62d3a4;
  --accent-dark: #063b2c;
  --danger: #ff8e8e;
  --warning: #ffd166;
  --focus: #9ed0ff;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at top, rgba(49, 85, 122, 0.28), transparent 34rem),
    #070b12;
}

button {
  font: inherit;
}

.app-shell {
  width: min(100%, 54rem);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(1rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(1.5rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
}

.page-header,
.talk-window-heading,
.secondary-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.page-header {
  margin-bottom: 1rem;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 8vw, 3.2rem);
  line-height: 1;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.35rem, 5vw, 1.8rem);
}

.eyebrow {
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pill,
.window-state {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.5rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  background: var(--surface);
}

.pill span,
.voice-status > span {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: #94a3b8;
}

.pill[data-state="connected"] span,
.voice-status[data-state="listening"] > span {
  background: var(--accent);
  box-shadow: 0 0 0 0.35rem rgba(98, 211, 164, 0.14);
}

.pill[data-state="connecting"] span,
.pill[data-state="reconnecting"] span,
.voice-status[data-state="warning"] > span {
  background: var(--warning);
}

.pill[data-state="error"] span,
.voice-status[data-state="error"] > span {
  background: var(--danger);
}

.talk-window,
.transcript-panel,
.controls {
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: rgba(16, 24, 40, 0.96);
}

.talk-window {
  padding: 1rem;
  border-left: 0.4rem solid #64748b;
}

.talk-window[data-active="true"] {
  border-left-color: var(--accent);
}

.privacy-message {
  margin: 0.75rem 0 0;
  color: var(--text-muted);
}

.transcript-panel {
  min-height: 18rem;
  max-height: 48vh;
  margin-top: 1rem;
  padding: 1rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.empty-transcript {
  display: grid;
  min-height: 15rem;
  place-content: center;
  text-align: center;
  color: var(--text-muted);
}

.empty-transcript p {
  margin: 0.35rem 0 0;
}

.message {
  width: min(92%, 38rem);
  margin-bottom: 0.9rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--surface-raised);
}

.message.user {
  margin-left: auto;
  border-color: #2f7b61;
  background: var(--accent-dark);
}

.message span {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
}

.message p {
  margin-bottom: 0;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.controls {
  margin-top: 1rem;
  padding: 1rem;
}

.voice-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3rem;
  margin-bottom: 0.85rem;
  color: var(--text-muted);
}

.voice-status[data-state="speaking"] > span,
.voice-status[data-state="barge"] > span {
  background: #82b9ff;
  box-shadow: 0 0 0 0.35rem rgba(130, 185, 255, 0.14);
}

.notice {
  margin-bottom: 0.85rem;
  padding: 0.75rem;
  border: 1px solid #916f15;
  border-radius: 0.65rem;
  color: #fff3c4;
  background: #362b0d;
}

.button {
  min-height: 3.5rem;
  padding: 0.75rem 1rem;
  border: 2px solid transparent;
  border-radius: 0.75rem;
  font-weight: 800;
  cursor: pointer;
  touch-action: manipulation;
}

.button:focus-visible {
  outline: 0.2rem solid var(--focus);
  outline-offset: 0.2rem;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.button-primary {
  width: 100%;
  color: #02130d;
  background: var(--accent);
}

.button-primary[data-active="true"] {
  color: #fff;
  background: #a62929;
}

.button-secondary {
  flex: 1 1 0;
  color: #f8fafc;
  border-color: var(--border);
  background: var(--surface-raised);
}

.secondary-controls {
  align-items: stretch;
  margin-top: 0.75rem;
}

footer {
  padding: 1rem 0.25rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer p {
  margin-bottom: 0.45rem;
}

.diagnostic-warning {
  color: var(--warning);
}

@media (max-width: 34rem) {
  .page-header {
    align-items: flex-start;
  }

  .secondary-controls {
    flex-direction: column;
  }

  .button-secondary {
    width: 100%;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .pill[data-state="connecting"] span,
  .pill[data-state="reconnecting"] span,
  .voice-status[data-state="speaking"] > span {
    animation: pulse 1.2s ease-in-out infinite;
  }

  @keyframes pulse {
    50% {
      transform: scale(1.18);
    }
  }
}

@media (forced-colors: active) {
  .pill span,
  .voice-status > span {
    border: 1px solid ButtonText;
  }
}