body { font-family: 'Roboto Serif', Georgia, serif; }
h1, h2, button, .chat-eyebrow { font-family: 'Cal Sans', Arial, sans-serif; }
.chat-page { max-width: 850px; margin: 2.5rem auto 4rem; padding: 0 1rem; }
.chat-heading { text-align: center; margin-bottom: 2rem; }
.chat-eyebrow { font-size: .75rem; letter-spacing: .14em; color: #555; }
.chat-heading h1 { font-size: clamp(2.5rem, 6vw, 4rem); margin: .4rem 0; }
.chat-heading > p:last-child { line-height: 1.6; }
.chat-shell { border: 2px solid #111; border-radius: 12px; overflow: hidden; box-shadow: 6px 6px 0 #fff000; }
.chat-log { padding: 1.2rem; max-height: 55vh; min-height: 160px; overflow-y: auto; }
.chat-log:empty { display: none; }
.chat-prompts-heading { font-size: 1rem; margin: 0; padding: 0 1.2rem .7rem; }
.chat-log:empty + .chat-prompts-heading { padding-top: 1.2rem; }
.chat-message { border: 1px solid #ddd; background: #f6f6f6; border-radius: 8px; padding: 1rem; margin: 0 0 1rem; }
.chat-message:last-child { margin-bottom: 0; }
.chat-message h2 { font-size: .8rem; margin: 0 0 .5rem; }
.chat-message p { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.65; font-size: .94rem; }
.chat-user { background: #fffde0; border-color: #d6d09c; margin-left: 2rem; }
.chat-source { display: inline-block; color: #333; font-size: .75rem; margin-top: .8rem; }
.chat-suggestions { display: flex; flex-wrap: wrap; gap: .5rem; padding: 0 1.2rem 1.2rem; }
button { border: 1px solid #aaa; border-radius: 5px; padding: .6rem .8rem; background: white; color: #111; cursor: pointer; }
button:hover:not(:disabled) { background: #fff000; color: #111; }
button:disabled { opacity: .5; cursor: default; }
button:focus-visible, textarea:focus-visible { outline: 3px solid #cb00bf; outline-offset: 3px; }
#chat-form { padding: 1.2rem; border-top: 1px solid #ddd; }
#chat-form label { display: block; font-size: .8rem; margin-bottom: .6rem; }
.chat-compose { display: flex; gap: .7rem; align-items: stretch; }
.chat-compose textarea { flex: 1; min-width: 0; resize: vertical; padding: .8rem; border: 1px solid #aaa; border-radius: 5px; font: inherit; font-size: 1rem; }
#chat-send { background: #111; color: white; }
#chat-status { font-size: .78rem; line-height: 1.5; margin: .7rem 0 0; min-height: 1.2rem; color: #555; }
.chat-note { font-size: .75rem; color: #555; line-height: 1.7; margin-top: 1.5rem; }
nav .chat-admin-link { display: inline-flex; align-items: center; flex-shrink: 0; }
.chat-admin-link svg { display: block; width: 1.05em; height: 1.05em; }
@media (max-width: 550px) {
  .chat-page { margin-top: 1.5rem; }
  .chat-compose { flex-direction: column; }
  .chat-user { margin-left: .7rem; }
  nav { gap: clamp(.4rem, 2vw, .65rem); }
  nav a { font-size: clamp(.8rem, 3.6vw, .95rem); }
}

.chat-keynote { margin: 1rem 0 0; }
.chat-keynote a { display: inline-block; padding: .65rem 1rem; border: 1px solid #111; border-radius: 5px; background: #fff000; color: #111; font-family: 'Cal Sans', Arial, sans-serif; text-decoration: none; }
.chat-keynote a:hover { background: #111; color: #fff000; }
.chat-keynote a:focus-visible { outline: 3px solid #cb00bf; outline-offset: 3px; }