:root {
  --bg: #f6f1e8;
  --ink: #1d1916;
  --muted: #5c534a;
  --card: #fffdf8;
  --line: #e4d9c8;
  --meiling: #215c4a;
  --meiling-soft: #e5f2ec;
  --user: #2b3540;
  --danger: #8b2e2e;
  --tap: 48px;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, "Segoe UI", "Nirmala UI", "Noto Sans Meetei Mayek",
    "Noto Sans Devanagari", sans-serif;
}

body {
  padding: max(12px, env(safe-area-inset-top)) 12px
    max(12px, env(safe-area-inset-bottom));
}

.app {
  max-width: 640px;
  margin: 0 auto;
  min-height: calc(100dvh - 24px);
  display: flex;
  flex-direction: column;
}

.top {
  text-align: center;
  padding: 12px 8px 8px;
}

h1 {
  margin: 0;
  letter-spacing: 0.28em;
  font-size: 1.15rem;
  font-weight: 700;
}

.beta {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.lead {
  color: var(--muted);
  line-height: 1.45;
}

.panel,
.chat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  font: inherit;
  color: inherit;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}

textarea {
  resize: vertical;
  min-height: var(--tap);
}

.primary,
.action,
.text-btn {
  min-height: var(--tap);
  min-width: var(--tap);
  border-radius: 12px;
  font: inherit;
  font-weight: 650;
}

.primary {
  width: 100%;
  margin-top: 12px;
  border: 0;
  background: var(--meiling);
  color: #fff;
}

.action {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 0 12px;
}

.text-btn {
  align-self: flex-end;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0 8px;
}

.hidden {
  display: none !important;
}

.error {
  color: var(--danger);
  margin: 8px 0 0;
}

.thread {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 8px 0 16px;
  -webkit-overflow-scrolling: touch;
}

.bubble {
  max-width: 92%;
  padding: 12px 14px;
  border-radius: 16px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.bubble.user {
  align-self: flex-end;
  background: var(--user);
  color: #fff;
}

.bubble.meiling {
  align-self: flex-start;
  background: var(--meiling-soft);
  color: var(--ink);
}

.turn {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.form-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.composer {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  position: sticky;
  bottom: 0;
  background: var(--card);
  padding-top: 8px;
}

.composer .primary {
  width: auto;
  margin: 0;
  padding: 0 18px;
}

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

@media (max-width: 480px) {
  h1 {
    letter-spacing: 0.22em;
  }

  .composer {
    flex-direction: column;
    align-items: stretch;
  }

  .composer .primary {
    width: 100%;
  }
}