:root {
  --bg: #f6f5f1; --fg: #1f2421; --muted: #6b716d; --card: #ffffff; --line: #e2e0d9;
  --accent: #2f5d50; --accent-fg: #ffffff; --me: #2f5d50; --me-fg: #ffffff; --sys: #ecebe4; --warn: #a33a2a;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 16px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #151816; --fg: #e8ebe8; --muted: #9aa29d; --card: #1f2321; --line: #313733;
          --accent: #6fb39c; --accent-fg: #0d1210; --me: #2f5d50; --me-fg: #f0f4f2; --sys: #232825; --warn: #ff8a75; }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg); }
[hidden] { display: none !important; }
button { font: inherit; border: 0; border-radius: 10px; padding: .6em 1em; background: var(--accent); color: var(--accent-fg); cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }
input, textarea { font: inherit; color: var(--fg); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: .6em .7em; width: 100%; }
a { color: var(--accent); }
code { font-family: ui-monospace, Consolas, monospace; font-size: .9em; background: var(--sys); padding: .1em .3em; border-radius: 4px; }
pre { background: var(--sys); padding: .7em; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; }

/* login + setup */
.card { max-width: 380px; margin: 8vh auto; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 1.6em; }
.card h1 { margin: .2em 0 1em; text-align: center; }
.card label { display: block; margin-bottom: 1em; font-size: .95em; }
.card label input { margin-top: .35em; }
.card button { width: 100%; margin-top: .3em; }
.logo { display: block; width: 64px; height: 64px; margin: 0 auto; border-radius: 14px; }
.hint { color: var(--muted); font-size: .85em; }
.msg { color: var(--warn); min-height: 1.2em; }
.qr { display: block; margin: 1em auto; background: #fff; padding: 8px; border-radius: 8px; }
.codes { font-family: ui-monospace, Consolas, monospace; columns: 2; background: var(--sys); padding: 1em 1.5em; border-radius: 8px; }

/* chat layout */
#chat { display: flex; flex-direction: column; height: 100dvh; }
header { display: flex; align-items: center; gap: .6em; padding: .6em .8em; padding-top: max(.6em, env(safe-area-inset-top));
         background: var(--card); border-bottom: 1px solid var(--line); }
.logo-sm { width: 32px; height: 32px; border-radius: 8px; }
.title { flex: 1; display: flex; flex-direction: column; line-height: 1.2; }
#status { font-size: .8em; color: var(--muted); }
button.icon, label.icon { background: none; color: var(--fg); padding: .3em .5em; font-size: 1.3em; cursor: pointer; border-radius: 8px; }
.panel { background: var(--card); border-bottom: 1px solid var(--line); padding: .8em; display: flex; flex-direction: column; gap: .5em; }
.panel h2 { font-size: 1em; margin: 0; }
#files-list { list-style: none; padding: 0; margin: 0; }
#files-list li { padding: .4em 0; border-bottom: 1px solid var(--line); }

#messages { flex: 1; overflow-y: auto; padding: 1em .8em; display: flex; flex-direction: column; gap: .7em; }
.bubble { max-width: 88%; padding: .6em .85em; border-radius: 16px; line-height: 1.45; overflow-wrap: anywhere; }
.bubble p { margin: .3em 0; } .bubble p:first-child { margin-top: 0; } .bubble p:last-child { margin-bottom: 0; }
.bubble ul, .bubble ol { margin: .3em 0; padding-left: 1.3em; }
.carmela { align-self: flex-end; background: var(--me); color: var(--me-fg); border-bottom-right-radius: 4px; }
.carmela a, .carmela code { color: var(--me-fg); }
.rumi { align-self: flex-start; background: var(--card); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.system { align-self: center; background: var(--sys); color: var(--muted); font-size: .85em; border-radius: 10px; text-align: center; }
.forge { border-left: 3px solid var(--accent); }
.tag { display: block; font-size: .75em; color: var(--muted); margin-bottom: .3em; }
.activity { font-size: .8em; color: var(--muted); margin-top: .4em; }
.activity summary { cursor: pointer; }
.time { display: block; font-size: .7em; opacity: .7; margin-top: .3em; }
.chip { display: inline-block; font-size: .8em; background: var(--sys); color: var(--fg); padding: .2em .6em; border-radius: 999px; margin: .2em .3em 0 0; text-decoration: none; }
.typing::after { content: "▍"; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

#composer { background: var(--card); border-top: 1px solid var(--line); padding: .6em; padding-bottom: max(.6em, env(safe-area-inset-bottom)); }
#composer .row { display: flex; align-items: flex-end; gap: .4em; }
#text { resize: none; max-height: 40vh; }
#attachments:empty { display: none; }
#attachments { margin-bottom: .4em; }
.stop { background: var(--warn); }