*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #667eea;--secondary: #764ba2;--bg: #f8f9fa;--text: #333;--text-secondary: #666;--border: #e0e0e0;--success: #28a745;--error: #dc3545}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6;color:var(--text);background-color:var(--bg)}.app{min-height:100vh;display:flex;justify-content:center;align-items:center;padding:1rem}.container{max-width:800px;width:100%;background:#fff;border-radius:1rem;box-shadow:0 4px 20px #0000001a;overflow:hidden}.container.center{padding:3rem 2rem;text-align:center}.welcome{padding:2rem;text-align:left;max-height:calc(100vh - 2rem);overflow-y:auto}.logo{font-size:3rem;margin-bottom:.5rem;text-align:center}.welcome h1{font-size:1.75rem;color:var(--primary);margin-bottom:1rem;text-align:center}.subtitle{color:var(--text);margin-bottom:.5rem;font-size:1rem;line-height:1.6}.warning{color:var(--secondary);font-weight:600;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}.welcome-section{margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}.welcome-section:last-of-type{border-bottom:none;padding-bottom:0}.welcome-section h3{color:var(--text);font-size:1.1rem;margin-bottom:.75rem}.welcome-section p{margin-bottom:.75rem;line-height:1.6}.welcome-section em{font-style:italic}.price-highlight{font-size:1.05rem}.price-highlight strong{color:var(--primary);font-size:1.2rem}.plan-features{list-style:none;padding:0;margin:0 0 1rem}.plan-features li{position:relative;padding-left:1.75rem;margin-bottom:.75rem;line-height:1.5}.plan-features li:before{content:"✅";position:absolute;left:0;top:0}.plan-features li strong{color:var(--primary)}.tagline{font-style:italic;color:var(--text-secondary);margin-bottom:0}.welcome .btn-large{display:block;width:100%;margin-top:1.5rem}.btn{padding:.75rem 1.5rem;border-radius:.5rem;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s;border:none}.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:#fff;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg)}.btn-large{padding:1rem 2rem;font-size:1.1rem}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}.spinner.large{width:60px;height:60px;border-width:4px}@keyframes spin{to{transform:rotate(360deg)}}.success-icon{font-size:4rem;margin-bottom:1rem}.success h2{color:var(--success);margin-bottom:1rem}.note{color:var(--text-secondary);font-size:.9rem;margin-bottom:1.5rem}.email-dialog h2{color:var(--primary);margin-bottom:.5rem}.email-form{max-width:400px;margin:1.5rem auto 0}.email-input{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:.5rem;font-size:1rem;text-align:center;margin-bottom:1rem}.email-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #667eea33}.error{color:var(--error);font-size:.9rem;margin-bottom:1rem}.actions{display:flex;gap:1rem;justify-content:center}.container.chat{display:flex;flex-direction:column;height:calc(100vh - 2rem)}.header{padding:1rem;text-align:center;border-bottom:1px solid var(--border)}.header h1{font-size:1.5rem;color:var(--text)}.messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:1rem}.message{display:flex;align-items:center;gap:.75rem;max-width:90%;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;flex-direction:row-reverse}.message.assistant{align-self:flex-start}.avatar{width:36px;height:36px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.25rem;flex-shrink:0}.message.user .avatar{background:var(--secondary)}.content{background:#fff;padding:.75rem 1rem;border-radius:1rem;box-shadow:0 1px 3px #0000001a;line-height:1.5}.message.user .content{background:var(--primary);color:#fff;border-bottom-right-radius:.25rem}.message.assistant .content{border-bottom-left-radius:.25rem}.content p{margin:0 0 .5rem}.content p:last-child{margin-bottom:0}.content ul,.content ol{margin:.5rem 0;padding-left:1.25rem}.content li{margin-bottom:.25rem}.content strong{color:var(--primary)}.message.user .content strong{color:#fff}.cursor{animation:blink 1s step-end infinite;color:var(--primary)}@keyframes blink{50%{opacity:0}}.input-area{display:flex;gap:.5rem;padding:1rem;border-top:1px solid var(--border);background:#fff}.input{flex:1;padding:.75rem 1rem;border:1px solid var(--border);border-radius:1.5rem;font-size:1rem;resize:none;font-family:inherit;line-height:1.5;max-height:150px}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #667eea33}.input:disabled{background-color:var(--bg);cursor:not-allowed}.send-btn{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:1.25rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.send-btn:hover:not(:disabled){background:#5a6fd6;transform:scale(1.05)}.send-btn:disabled{background:#999;cursor:not-allowed}@media (max-width: 768px){.container.chat{height:100vh;max-height:none;border-radius:0}.message{max-width:95%}.actions{flex-direction:column}.btn{width:100%}}