:root{--bg:#fbfbfa;--surface:#ffffff;--line:#e4e4e1;--ink:#1a1a18;--muted:#6b6b66;--accent:#2f5d50;--accent-ink:#ffffff;--danger:#8a3324;--radius:10px}@media (prefers-color-scheme:dark){:root{--bg:#161715;--surface:#1f211e;--line:#33352f;--ink:#ececE6;--muted:#9a9a92;--accent:#7fb3a1;--accent-ink:#10201b;--danger:#e08a7a}}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font:16px/1.5 ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;-webkit-text-size-adjust:100%}a{color:var(--accent)}.shell{max-width:46rem;margin:0 auto;padding:1rem 1rem 2rem}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 0;border-bottom:1px solid var(--line);margin-bottom:1.25rem}.brand{font-weight:650;letter-spacing:-.01em}.muted{color:var(--muted)}.small{font-size:.875rem}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1rem}.stack{display:flex;flex-direction:column;gap:.75rem}label{display:block;font-size:.875rem;color:var(--muted);margin-bottom:.25rem}input[type=email],input[type=password],input[type=text],textarea{width:100%;padding:.6rem .7rem;font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button{font:inherit;padding:.6rem .9rem;border-radius:8px;border:1px solid transparent;background:var(--accent);color:var(--accent-ink);cursor:pointer}button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}button:disabled{opacity:.55;cursor:not-allowed}.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.row{display:block;padding:.85rem 1rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:inherit}.row:hover{border-color:var(--accent)}.row-title{font-weight:600}.row-preview{color:var(--muted);font-size:.9rem;margin-top:.15rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.thread{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}.msg{max-width:85%;padding:.55rem .75rem;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);overflow-wrap:anywhere}.msg.mine{align-self:flex-end;background:var(--accent);color:var(--accent-ink);border-color:transparent}.msg-meta{font-size:.75rem;opacity:.7;margin-top:.2rem}.composer{display:flex;gap:.5rem;align-items:flex-end}.composer textarea{resize:vertical;min-height:2.6rem}.notice{padding:.75rem 1rem;border:1px solid var(--line);border-left:3px solid var(--danger);border-radius:8px;background:var(--surface)}.empty{padding:2rem 1rem;text-align:center;color:var(--muted)}@media (max-width:32rem){.shell{padding:.75rem .75rem 1.5rem}.msg{max-width:92%}}