*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
:root{--bg:#0f1117;--panel:#1e293b;--bd:#334155;--ink:#e2e8f0;--mut:#94a3b8;--accent:#3b82f6;--me:#1d4ed8}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--ink);height:100dvh;overflow:hidden}
.hidden{display:none!important}

.login{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:var(--bg)}
.login-box{background:var(--panel);border:1px solid var(--bd);border-radius:14px;padding:28px 24px;width:min(360px,90vw);display:flex;flex-direction:column;gap:12px}
.logo{font-size:1.4rem;font-weight:700;text-align:center;margin-bottom:6px}
.login input,.composer textarea{background:#0d1219;border:1px solid var(--bd);border-radius:10px;color:var(--ink);padding:12px 14px;font-size:1rem;outline:none}
.login button,.composer button{background:var(--accent);color:#fff;border:0;border-radius:10px;padding:12px;font-size:1rem;font-weight:600;cursor:pointer}
.err{color:#f87171;font-size:.85rem;min-height:1em;text-align:center}

.app{display:flex;flex-direction:column;height:100dvh}
.top{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--bd);background:#0d1219}
.title{font-weight:700}
.state{font-size:.8rem;color:var(--mut);font-weight:400;margin-left:6px}
.ghost{background:none;border:1px solid var(--bd);color:var(--mut);border-radius:8px;padding:6px 10px;font-size:.8rem;cursor:pointer}

.messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:86%;padding:10px 14px;border-radius:14px;font-size:.95rem;line-height:1.5;word-wrap:break-word;white-space:normal}
.msg.user{align-self:flex-end;background:var(--me);color:#fff;border-bottom-right-radius:4px}
.msg.assistant{align-self:flex-start;background:var(--panel);border:1px solid var(--bd);border-bottom-left-radius:4px}
.msg pre{background:#0d1219;border:1px solid var(--bd);border-radius:8px;padding:10px;overflow-x:auto;margin:8px 0;font-size:.85rem}
.msg code{background:#0d1219;border-radius:4px;padding:1px 5px;font-size:.88em}
.msg pre code{background:none;padding:0}
.msg a{color:#7dd3fc}
.msg img{max-width:100%;border-radius:10px;margin:6px 0}
.msg h1,.msg h2,.msg h3{margin:8px 0 4px;line-height:1.25}
.msg ul,.msg ol{margin:6px 0 6px 20px}
.filechip{display:inline-flex;align-items:center;gap:8px;background:#0d1219;border:1px solid var(--bd);border-radius:10px;padding:8px 12px;margin:6px 0;color:#7dd3fc;text-decoration:none}

.thinking{align-self:flex-start;color:var(--mut);font-size:.85rem;padding:6px 4px}
.composer{display:flex;gap:8px;padding:12px;border-top:1px solid var(--bd);background:#0d1219;align-items:flex-end;padding-bottom:max(12px,env(safe-area-inset-bottom))}
.composer textarea{flex:1;resize:none;max-height:140px}
.composer button#send{width:52px;flex-shrink:0}
.composer .icon{width:46px;flex-shrink:0;background:#0d1219;border:1px solid var(--bd);color:var(--ink);font-size:1.2rem}
.pending{display:flex;flex-wrap:wrap;gap:6px;padding:0 12px}
.pending .chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--bd);border-radius:10px;padding:5px 9px;font-size:.8rem;color:var(--mut)}
.pending .chip b{color:var(--ink);font-weight:500;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pending .chip .x{cursor:pointer;color:#f87171;font-weight:700}
.msg .uimg{max-width:200px;border-radius:10px;margin:4px 0;display:block}