:root { color-scheme: light; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, sans-serif; background: #faf9f7; color: #222; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 20px 24px; background: #fff; border-bottom: 1px solid #eee; }
.top h1 { margin: 0; font-size: 22px; }
.sub { margin: 2px 0 0; color: #666; font-size: 14px; }
.who { font-size: 14px; color: #555; }
.who #whoemail { margin-right: 8px; }
button.small { padding: 6px 10px; font-size: 13px; }
.wrap { max-width: 720px; margin: 24px auto; padding: 0 16px; }
.card { background: #fff; border: 1px solid #eee; border-radius: 12px; padding: 20px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.hidden { display: none; }
label { display: block; margin: 10px 0; font-size: 14px; }
input[type=email], input[type=password], input[type=text] { width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 8px; font-size: 16px; background: #fff; color: inherit; }
.row { display: flex; gap: 10px; margin-top: 12px; }
button { padding: 10px 16px; border: 0; border-radius: 8px; background: #222; color: #fff; cursor: pointer; }
button.ghost { background: #f0eeea; color: #222; }
.msg { min-height: 1.2em; color: #a00; font-size: 14px; }
.messages { list-style: none; margin: 0 0 12px; padding: 0; max-height: 50vh; overflow: auto; display: flex; flex-direction: column; gap: 8px; }
.messages li { padding: 8px 12px; border-radius: 10px; background: #f4f2ee; }
.messages li.me { background: #222; color: #fff; align-self: flex-end; }
.composer { display: flex; gap: 8px; }
.hint { color: #777; font-size: 13px; }