:root { color-scheme: light dark; --bg: #f6f7f9; --fg: #1b1f2a; --accent: #2b3a67; }
@media (prefers-color-scheme: dark) { :root { --bg: #14171f; --fg: #e8eaf0; } }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.4 system-ui, sans-serif; background: var(--bg); color: var(--fg); padding: env(safe-area-inset-top) 16px env(safe-area-inset-bottom); }
.loading, .center { text-align: center; margin-top: 30vh; }
button, .btn { font: inherit; padding: 12px 20px; border-radius: 10px; border: 0; background: var(--accent); color: #fff; text-decoration: none; display: inline-block; }
main { display: flex; flex-direction: column; min-height: calc(100dvh - 64px); }
header { display: flex; align-items: center; gap: 8px; padding: 12px 0; position: sticky; top: 0; background: var(--bg); }
header h1 { flex: 1; font-size: 1.2rem; margin: 0; }
button.icon { padding: 8px 12px; background: transparent; color: var(--fg); font-size: 1.2rem; }
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
@media (prefers-color-scheme: dark) { button.secondary { color: #aab6e0; border-color: #aab6e0; } }
.messages { flex: 1; display: flex; flex-direction: column; gap: 10px; padding-bottom: 12px; }
.msg { max-width: 88%; padding: 10px 14px; border-radius: 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; }
.msg.assistant { align-self: flex-start; background: rgba(127,127,127,.15); }
.msg.live { margin-bottom: 12px; }
.approval { border: 1px solid var(--accent); border-radius: 12px; padding: 12px; margin-bottom: 12px; }
.approval pre { white-space: pre-wrap; overflow-wrap: anywhere; font-size: .8rem; max-height: 30vh; overflow: auto; }
.approval button { margin-right: 8px; }
.composer { position: sticky; bottom: 0; background: var(--bg); padding: 8px 0 calc(8px + env(safe-area-inset-bottom)); }
.composer textarea { width: 100%; font: inherit; padding: 10px; border-radius: 10px; border: 1px solid rgba(127,127,127,.4); background: transparent; color: inherit; resize: none; }
.composer .row { display: flex; gap: 8px; margin-top: 8px; justify-content: flex-end; }
.composer select { font: inherit; margin-right: auto; padding: 8px; border-radius: 10px; }
.toast { position: fixed; left: 16px; right: 16px; bottom: 90px; background: #222; color: #fff; padding: 12px; border-radius: 10px; text-align: center; }
[hidden] { display: none !important; }