:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #000;
  color: #ececec;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  background: #000;
  -webkit-font-smoothing: antialiased;
}

main {
  width: min(100%, 38rem);
  min-height: 100dvh;
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
}

nav {
  display: flex;
  justify-content: space-between;
}

nav a {
  color: #b4b4b4;
  text-decoration: none;
  font-size: .9rem;
}

nav a:focus-visible,
#call-button:focus-visible {
  outline: 2px solid #ececec;
  outline-offset: 3px;
}

#timing {
  min-height: 1.25em;
  margin: 20px 0 0;
  color: #ececec;
  font-size: .85rem;
  font-variant-numeric: tabular-nums;
}

section {
  margin: auto 0;
  padding: 48px 0;
  text-align: center;
}

h1 {
  margin: 0;
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: -.04em;
  text-wrap: balance;
}

#status {
  min-height: 1.5em;
  margin: 16px 0 30px;
  color: #b4b4b4;
}

#call-button {
  min-width: 10rem;
  min-height: 3.25rem;
  padding: 0 28px;
  border: 0;
  border-radius: 999px;
  background: #f4f4f4;
  color: #171717;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

#voice-model {
  display: block;
  min-width: 12rem;
  margin: 0 auto 6px;
  padding: 8px 10px;
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  background: #171717;
  color: #ececec;
  font: inherit;
}

#voice-model-status {
  min-height: 1.25em;
  margin: 0 0 20px;
  color: #8f8f8f;
  font-size: .8rem;
}

#call-button:active { transform: scale(.98); }
#call-button:not(.active):hover:not(:disabled) { background: #dedede; }
#call-button:disabled { cursor: wait; opacity: .58; }
#call-button.active { background: #3d2727; color: #f2d8d8; }
#call-button.active:hover { background: #4b3030; }

#note {
  max-width: 31rem;
  margin: 30px auto 0;
  color: #8f8f8f;
  font-size: .8rem;
  line-height: 1.55;
}

@media (prefers-reduced-motion: reduce) {
  #call-button:active { transform: none; }
}