:root{--ink:#17222c;--muted:#6d7b85;--paper:#f5f7f4;--card:#fff;--line:#dfe5df;--green:#176b52;--green2:#2b8b68;--mint:#e5f2eb;--red:#b33c35;--redbg:#fff0ed;--shadow:0 18px 60px rgba(29,58,46,.09)}*{box-sizing:border-box}html{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper)}body{margin:0;min-height:100vh;background:radial-gradient(circle at 85% 0,#e2eee7 0,transparent 30%),var(--paper)}button,input,textarea{font:inherit}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,5vw,72px);border-bottom:1px solid rgba(23,34,44,.09);background:rgba(250,251,248,.82);backdrop-filter:blur(16px)}.brand{display:flex;gap:12px;align-items:center;color:var(--ink);font-weight:750;text-decoration:none;font-size:18px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--green);color:#fff;font-family:Georgia,serif}.icon-link{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;text-decoration:none;color:var(--ink);font-size:21px}.icon-link:hover{background:var(--mint)}.chat-shell{width:min(820px,calc(100% - 32px));margin:0 auto;padding:70px 0}.hero{text-align:center}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.16em;color:var(--green)}h1{font:500 clamp(40px,7vw,70px)/1.05 Georgia,serif;margin:16px 0 12px;letter-spacing:-.035em}.hero>p,.settings-heading p,.auth-card>p{color:var(--muted);font-size:17px;line-height:1.6;margin:0 auto;max-width:620px}.database-pill{display:inline-block;margin-top:22px;background:var(--mint);color:var(--green);padding:8px 14px;border-radius:99px;font-size:13px}.mode-switch{margin:40px auto 24px;padding:5px;display:flex;width:max-content;border:1px solid var(--line);background:#e9ede9;border-radius:99px}.mode,.tab{border:0;background:transparent;cursor:pointer;color:var(--muted)}.mode{padding:10px 24px;border-radius:99px;font-weight:650}.mode.active{background:#fff;color:var(--ink);box-shadow:0 4px 14px rgba(0,0,0,.07)}.panel{display:none}.panel.active{display:block}.conversation{background:rgba(255,255,255,.85);border:1px solid var(--line);border-radius:24px;min-height:250px;padding:25px;box-shadow:var(--shadow)}.conversation.empty{display:grid;place-items:center}.empty-state{text-align:center;color:#9aa59f}.empty-state span{font-size:32px;color:var(--green)}.message{display:flex;gap:13px;padding:16px}.message+.message{border-top:1px solid #edf0ed}.avatar{flex:0 0 34px;height:34px;display:grid;place-items:center;border-radius:10px;background:#edf0ed;font-weight:800;font-size:13px}.assistant .avatar{background:var(--green);color:#fff}.message small{color:var(--muted);font-weight:700}.message p{margin:6px 0 0;line-height:1.55;white-space:pre-wrap}.message.error p{color:var(--red)}.composer{display:flex;align-items:flex-end;gap:10px;margin-top:16px;padding:12px 12px 12px 20px;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}.composer textarea{flex:1;border:0;outline:0;resize:none;line-height:1.5;min-height:44px;padding:10px 0;background:transparent}.send-button{width:48px;height:48px;border:0;border-radius:15px;background:var(--green);color:white;font-size:22px;cursor:pointer}.send-button:disabled{opacity:.5}.typing{display:flex;gap:5px;padding:9px 0}.typing i{width:7px;height:7px;border-radius:50%;background:var(--green);animation:pulse 1.2s infinite}.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}@keyframes pulse{50%{opacity:.25;transform:translateY(-3px)}}.voice-panel{text-align:center;padding:32px}.record-button{position:relative;width:180px;height:180px;border:0;border-radius:50%;background:linear-gradient(145deg,var(--green2),#0b4f3d);color:white;cursor:pointer;box-shadow:0 22px 50px rgba(23,107,82,.28)}.record-rings{position:absolute;inset:-16px;border:1px solid rgba(23,107,82,.2);border-radius:50%}.mic{font-size:35px}.record-button.recording{background:linear-gradient(145deg,#d85b52,#a22e2a);animation:breathe 1.4s infinite}.record-button.sending{opacity:.6}@keyframes breathe{50%{box-shadow:0 0 0 22px rgba(179,60,53,.1)}}.voice-panel h2{font:500 28px Georgia,serif;margin:35px 0 8px}.voice-panel p{color:var(--muted)}audio{margin-top:18px;width:min(420px,100%)}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,30px);opacity:0;background:var(--ink);color:#fff;padding:13px 20px;border-radius:12px;transition:.25s;pointer-events:none;z-index:20}.toast.show{opacity:1;transform:translate(-50%,0)}
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@media(max-width:680px){.topbar{height:62px}.chat-shell{padding:42px 0}.hero h1{font-size:42px}.hero>p{font-size:15px}.conversation{padding:10px}.message{padding:14px 8px}.record-button{width:145px;height:145px}.settings-shell{padding-top:35px}.back-link{font-size:13px}.settings-heading{align-items:flex-start}.settings-heading h1{font-size:42px}.settings-tabs{overflow:auto}.tab{white-space:nowrap;padding:12px}.form-grid{grid-template-columns:1fr;padding:20px}.field{grid-column:1}.mode-field{flex-wrap:wrap}.actions{flex-direction:column-reverse}.actions button{width:100%}.upload-card,.file-card{align-items:flex-start;flex-wrap:wrap}.upload-button{width:100%;text-align:center}.status{margin-left:auto}.file-actions{width:100%;justify-content:flex-end}.danger-card{padding:22px}}