:root {
  color-scheme: light;
  --paper: #f5f1e8;
  --ink: #2d302d;
  --muted: #77776f;
  --line: #d9d3c7;
  --ai: #ffffff;
  --user: #d8efe2;
  --accent: #507d63;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
}
button, textarea { font: inherit; }
button { cursor: pointer; }

.shell {
  width: min(760px, 100%);
  height: 100dvh;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto 1fr auto auto auto;
  background: rgba(255,255,255,.24);
  border-inline: 1px solid rgba(0,0,0,.05);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(245,241,232,.92);
  backdrop-filter: blur(8px);
}
.identity { display: flex; align-items: center; gap: 11px; min-width: 0; }
.avatar {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  background: #ded4bd; color: #4b4a42; font-weight: 700;
}
h1 { margin: 0; font-size: 1rem; font-weight: 700; }
#world-status { margin: 3px 0 0; color: var(--muted); font-size: .77rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ghost { border: 0; background: transparent; color: var(--muted); padding: 7px; font-size: .78rem; }
.ghost:hover { color: var(--ink); }

.chat {
  overflow-y: auto;
  padding: 22px 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}
.message { max-width: 78%; line-height: 1.65; padding: 10px 13px; border-radius: 17px; white-space: pre-wrap; overflow-wrap: anywhere; box-shadow: 0 1px 0 rgba(0,0,0,.04); }
.message.ai { align-self: flex-start; background: var(--ai); border-bottom-left-radius: 5px; }
.message.user { align-self: flex-end; background: var(--user); border-bottom-right-radius: 5px; }
.message.monologue { color: #55584f; font-size: .92rem; }

.typing { padding: 0 20px 8px; color: var(--muted); font-size: .78rem; }
.composer { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 10px 14px 12px; border-top: 1px solid var(--line); background: var(--paper); }
textarea { width: 100%; min-height: 43px; max-height: 140px; resize: none; border: 1px solid var(--line); border-radius: 16px; padding: 10px 13px; color: var(--ink); background: #fff; outline: none; line-height: 1.45; }
textarea:focus { border-color: #a8b9ac; box-shadow: 0 0 0 3px rgba(80,125,99,.08); }
.send { border: 0; border-radius: 14px; padding: 0 17px; background: var(--accent); color: white; font-weight: 700; }
.send:disabled { opacity: .45; cursor: default; }
footer { padding: 0 16px 12px; text-align: center; color: var(--muted); font-size: .68rem; background: var(--paper); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 560px) {
  .shell { border: 0; }
  .message { max-width: 86%; }
  footer { display: none; }
}