:root{font:15px/1.45 system-ui,sans-serif;color:#17202a;background:#eef1f5}*{box-sizing:border-box}body{margin:0}.chat-shell{display:grid;grid-template-columns:minmax(240px,30%) 1fr;height:100vh;max-width:1200px;margin:auto;background:white}.conversation-pane{border-right:1px solid #d7dde5}.conversation-pane header,.message-pane header{min-height:64px;padding:12px 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #d7dde5}h1,h2{font-size:18px;margin:0}button,.attach{border:0;border-radius:8px;padding:9px 13px;background:#2767d8;color:white;cursor:pointer}button:disabled{cursor:wait;opacity:.55}.chat-actions{display:flex;gap:6px}.icon-button{background:transparent;color:#2767d8;font-size:20px;padding:6px 9px}.conversation{display:block;width:100%;text-align:left;padding:14px 18px;border-radius:0;background:white;color:#17202a;border-bottom:1px solid #edf0f4}.conversation[aria-current=true]{background:#eaf1ff}.message-pane{display:grid;grid-template-rows:auto 1fr auto auto;min-width:0}#messages{overflow:auto;margin:0;padding:20px;list-style:none}.message{max-width:72%;margin:0 0 15px;padding:10px 13px;border-radius:12px;background:#eef2f7}.message.mine{margin-left:auto;background:#dce9ff}.meta{font-size:12px;color:#647184}.attachment{display:block;margin-top:8px}#composer{display:flex;gap:8px;padding:12px;border-top:1px solid #d7dde5}#message{flex:1;padding:10px;border:1px solid #b9c2ce;border-radius:8px}.attach input{display:none}#back{display:none}#error{color:#a21b1b;margin:0;padding:0 12px 8px}dialog{border:0;border-radius:12px;box-shadow:0 18px 60px #17202a40;max-width:min(440px,calc(100vw - 24px));padding:22px;width:100%}dialog::backdrop{background:#17202a73}.dialog-close{background:transparent;color:#17202a;float:right;font-size:22px;padding:0 7px}dl{margin:20px 0}dt{color:#647184;font-size:12px;font-weight:700;text-transform:uppercase}dd{margin:2px 0 14px;overflow-wrap:anywhere}#account-copy-status{min-height:22px;margin:10px 0 0;color:#365f3d}
@media(max-width:640px){.chat-shell{display:block}.conversation-pane,.message-pane{height:100vh}.message-pane{display:none}.chat-shell[data-screen=conversation] .conversation-pane{display:none}.chat-shell[data-screen=conversation] .message-pane{display:grid}#back{display:block}.message{max-width:88%}}