:root {
  color-scheme: dark;
  font-family: Georgia, "Times New Roman", serif;
  background: #15120f;
  color: #f4eadb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #34281f, #15120f 52%);
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1rem;
  background: #d9aa55;
  color: #1c130c;
  cursor: pointer;
  font-weight: 700;
}

button:disabled {
  cursor: wait;
  opacity: 0.55;
}

button.ghost {
  border: 1px solid #6d5a48;
  background: transparent;
  color: #f4eadb;
}

.shell {
  display: grid;
  min-height: 100vh;
  padding: 1rem;
  place-items: center;
}

.card {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  width: min(920px, 100%);
  height: min(860px, calc(100vh - 2rem));
  overflow: hidden;
  border: 1px solid #5c493a;
  border-radius: 28px;
  background: rgba(27, 22, 18, 0.86);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
}

.topbar,
.composer {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 1rem;
}

.topbar {
  justify-content: space-between;
  border-bottom: 1px solid #3b3028;
}

.eyebrow,
h1 {
  margin: 0;
}

.eyebrow {
  color: #d9aa55;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(1.7rem, 4vw, 2.7rem);
}

.status {
  min-height: 2.25rem;
  padding: 0.55rem 1rem;
  border-bottom: 1px solid #3b3028;
  color: #cbb89f;
}

.status.bad {
  color: #ffb4a8;
}

.messages {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  overflow-y: auto;
  padding: 1rem;
}

.message {
  max-width: min(76ch, 86%);
}

.message.user {
  align-self: flex-end;
}

.message-label {
  margin: 0 0 0.25rem 0.2rem;
  color: #a99780;
  font-size: 0.82rem;
}

.message-body {
  white-space: pre-wrap;
  border: 1px solid #4b3d32;
  border-radius: 18px;
  padding: 0.85rem 1rem;
  background: #211a15;
  line-height: 1.45;
}

.message.user .message-body {
  background: #3a2a18;
  border-color: #8a6632;
}

.composer {
  border-top: 1px solid #3b3028;
}

.composer textarea {
  flex: 1;
  min-height: 3.2rem;
  max-height: 10rem;
  resize: vertical;
  border: 1px solid #5c493a;
  border-radius: 18px;
  padding: 0.85rem 1rem;
  background: #120f0d;
  color: #f4eadb;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

@media (max-width: 640px) {
  .shell {
    padding: 0;
  }

  .card {
    min-height: 100vh;
    height: 100vh;
    border: 0;
    border-radius: 0;
  }

  .topbar,
  .composer {
    align-items: stretch;
  }

  .composer {
    flex-direction: column;
  }
  .composer textarea,
  .composer button {
    width: 100%;
  }

  .message {
    max-width: 94%;
  }
}


/* Simple two-colour lava-lamp page background.
   The moving shapes live behind the chat card, so no HTML changes are needed. */
:root {
  --lava-bg: #120c08;
  --lava-blob: #c87422;
}

body {
  position: relative;
  isolation: isolate;
  background: var(--lava-bg);
  overflow: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  pointer-events: none;
}

body::before {
  inset: -25%;
  z-index: -2;
  background:
    radial-gradient(circle at 20% 25%, var(--lava-blob) 0 9%, transparent 18%),
    radial-gradient(circle at 75% 20%, var(--lava-blob) 0 7%, transparent 16%),
    radial-gradient(circle at 45% 75%, var(--lava-blob) 0 10%, transparent 20%),
    radial-gradient(circle at 85% 80%, var(--lava-blob) 0 6%, transparent 15%),
    var(--lava-bg);
  filter: blur(34px);
  opacity: 0.55;
  animation: lava-drift 16s ease-in-out infinite alternate;
}

body::after {
  inset: -15%;
  z-index: -1;
  background:
    radial-gradient(circle at 65% 45%, var(--lava-blob) 0 8%, transparent 18%),
    radial-gradient(circle at 30% 60%, var(--lava-blob) 0 6%, transparent 14%);
  filter: blur(48px);
  opacity: 0.35;
  animation: lava-float 24s ease-in-out infinite alternate;
}

.shell {
  position: relative;
  z-index: 1;
}

@keyframes lava-drift {
  from {
    transform: translate3d(-3%, -2%, 0) scale(1);
  }

  to {
    transform: translate3d(4%, 3%, 0) scale(1.08);
  }
}

@keyframes lava-float {
  from {
    transform: translate3d(4%, 3%, 0) scale(1.05);
  }

  to {
    transform: translate3d(-5%, -4%, 0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after {
    animation: none;
  }
}