:root{--bg:#0b0d12;--panel:#14171f;--border:#232733;--text:#e7e9ee;--muted:#9aa1ad;--accent:#f0a35e;--accent-ink:#1a1206}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}.shell{max-width:640px;margin:0 auto;padding:64px 24px}h1{font-size:2.2rem;margin:0 0 6px;letter-spacing:-.01em}.sub{color:var(--muted);font-size:1.08rem;margin:0 0 28px}.card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:24px}.muted{color:var(--muted);font-size:.92rem}.btn{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--border);background:#1b1f29;color:var(--text);font:inherit;font-weight:600;padding:10px 18px;border-radius:10px;cursor:pointer;transition:background .15s ease,border-color .15s ease}.btn:hover{background:#222735}.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.btn-primary:hover{background:#f2b274}.disclaimer{margin-top:28px;color:var(--muted);font-size:.82rem;border-top:1px solid var(--border);padding-top:16px}.app{display:flex;flex-direction:column;height:100dvh;max-width:820px;margin:0 auto}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--border);background:rgba(11,13,18,.85);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.brand{font-weight:700;font-size:1.15rem;display:flex;flex-direction:column;line-height:1.1}.brand-tag{font-size:.72rem;color:var(--muted);font-weight:400;margin-top:2px}.link-btn{background:none;border:none;color:var(--muted);font:inherit;cursor:pointer;padding:6px 8px;border-radius:8px}.link-btn:hover{color:var(--text);background:#1b1f29}.chat{display:flex;flex-direction:column;flex:1 1;min-height:0}.banner{background:#2a1f0a;color:#ffd9a0;border-bottom:1px solid #4a3a16;font-size:.85rem;padding:8px 20px;text-align:center}.messages{flex:1 1;overflow-y:auto;padding:22px 20px 8px;display:flex;flex-direction:column;gap:14px}.empty{margin:auto;text-align:center;color:var(--muted);max-width:460px;padding:24px}.empty-title{font-size:1.3rem;color:var(--text);margin-bottom:8px}.empty em{color:var(--accent);font-style:normal}.bubble{max-width:78%;padding:11px 15px;border-radius:16px;line-height:1.55;white-space:pre-wrap;word-wrap:break-word}.bubble.user{align-self:flex-end;background:var(--accent);color:var(--accent-ink);border-bottom-right-radius:5px}.bubble.assistant{align-self:flex-start;background:var(--panel);border:1px solid var(--border);border-bottom-left-radius:5px}.bubble.typing{color:var(--muted);letter-spacing:2px}.att-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0;padding:0}.att-item{margin:0}.att-thumb{max-width:160px;max-height:160px;border-radius:10px;display:block}.att-doc{display:inline-block;background:#00000033;border:1px solid var(--border);border-radius:8px;padding:5px 10px;font-size:.85rem;color:inherit;text-decoration:none}.pending-files{display:flex;flex-wrap:wrap;gap:8px;padding:8px 20px 0}.chip{display:inline-flex;align-items:center;gap:6px;background:#1b1f29;border:1px solid var(--border);border-radius:999px;padding:4px 6px 4px 12px;font-size:.82rem}.chip button{background:none;border:none;color:var(--muted);cursor:pointer;font-size:1rem;line-height:1;padding:0 4px}.chip button:hover{color:#ff6b6b}.composer{display:flex;align-items:flex-end;gap:8px;padding:10px 20px;border-top:1px solid var(--border)}.composer textarea{flex:1 1;resize:none;max-height:160px;background:var(--panel);border:1px solid var(--border);border-radius:14px;color:var(--text);font:inherit;padding:11px 14px;line-height:1.45}.composer textarea:focus{outline:none;border-color:var(--accent)}.attach-btn,.send-btn{border:1px solid var(--border);background:#1b1f29;color:var(--text);font:inherit;border-radius:12px;cursor:pointer;height:44px}.attach-btn{width:44px;font-size:1.4rem;line-height:1}.send-btn{padding:0 20px;font-weight:700;background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.attach-btn:disabled,.send-btn:disabled{opacity:.5;cursor:default}.waiver{color:var(--muted);font-size:.72rem;line-height:1.45;padding:0 20px 14px;text-align:center}.waiver strong{color:#cbb08a}.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#1b1f29;border:1px solid var(--border);color:var(--text);padding:10px 16px;border-radius:10px;font-size:.85rem;box-shadow:0 8px 24px rgba(0,0,0,.4);z-index:50}@media (max-width:600px){.bubble{max-width:88%}}