:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--text-primary: #1a1a1a;--text-secondary: #6c757d;--border-color: #e0e0e0;--accent: #2c3e50;--transition: all .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}#app{width:100%;max-width:600px}.container{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:3rem 2rem;box-shadow:0 2px 8px #0000000a}h1{font-size:2rem;font-weight:300;letter-spacing:-.5px;margin-bottom:1.5rem;text-align:center;color:var(--accent)}.description{font-size:.95rem;line-height:1.6;color:var(--text-secondary);text-align:left;margin-bottom:2.5rem;text-wrap:balance}.form{display:flex;flex-direction:column;gap:1.5rem}.input-group{display:flex;flex-direction:column;gap:.5rem}label{font-size:.875rem;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}input{padding:.875rem 1rem;font-size:1rem;border:1px solid var(--border-color);border-radius:4px;background:var(--bg-primary);color:var(--text-primary);transition:var(--transition);font-family:inherit}input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2c3e501a}input::placeholder{color:var(--text-secondary);opacity:.6}.submit-btn,.reset-btn{padding:1rem 2rem;font-size:1rem;font-weight:500;border:none;border-radius:4px;background:var(--accent);color:#fff;cursor:pointer;transition:var(--transition);margin-top:.5rem;font-family:inherit}.submit-btn:hover,.reset-btn:hover{background:#34495e;transform:translateY(-1px);box-shadow:0 4px 12px #2c3e5033}.submit-btn:active,.reset-btn:active{transform:translateY(0)}.thinking{text-align:center;padding:3rem 2rem;opacity:0;animation:fadeIn .3s ease forwards}.thinking p{font-size:1.5rem;font-weight:300;color:var(--text-secondary)}.dots:after{content:"";animation:dots 1.5s steps(4,end) infinite}@keyframes dots{0%,20%{content:""}40%{content:"."}60%{content:".."}80%,to{content:"..."}}.result{text-align:center;padding:2rem;opacity:0;animation:fadeIn .4s ease forwards;display:flex;flex-direction:column;align-items:center}.answer{font-size:4rem;font-weight:300;color:var(--accent);margin-bottom:2rem;letter-spacing:-1px}.reset-btn{margin-top:1rem;background:transparent;color:var(--accent);border:1px solid var(--border-color)}.reset-btn:hover{background:var(--bg-primary);border-color:var(--accent)}.hidden{display:none!important}.methodology-link{background:none;border:none;color:var(--text-secondary);font-size:.875rem;text-decoration:underline;cursor:pointer;padding:0;margin-top:.5rem;transition:var(--transition);font-family:inherit}.methodology-link:hover{color:var(--accent);transform:none;box-shadow:none}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;padding:2rem;opacity:0;animation:fadeIn .3s ease forwards}.modal-content{background:var(--bg-primary);border-radius:8px;max-width:700px;width:100%;max-height:85vh;overflow-y:auto;position:relative;box-shadow:0 8px 32px #0003}.close-btn{position:absolute;top:1rem;right:1rem;background:none;border:none;font-size:2rem;color:var(--text-secondary);cursor:pointer;padding:0;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:var(--transition);line-height:1}.close-btn:hover{background:var(--bg-secondary);color:var(--accent)}.modal-body{padding:3rem}.modal-body h1{font-size:1.75rem;margin-bottom:2rem;text-align:left}.modal-body h2{font-size:1.25rem;font-weight:500;color:var(--accent);margin-top:2rem;margin-bottom:1rem}.modal-body h3{font-size:1.05rem;font-weight:500;color:var(--text-primary);margin-top:1.5rem;margin-bottom:.75rem}.modal-body p{margin-bottom:1rem;line-height:1.6;color:var(--text-primary)}.modal-body ul{margin-left:1.5rem;margin-bottom:1rem}.modal-body li{margin-bottom:.5rem;color:var(--text-primary)}.modal-body pre{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:4px;padding:1rem;margin:1rem 0;overflow-x:auto}.modal-body code{font-family:SF Mono,Monaco,Cascadia Code,Roboto Mono,Courier New,monospace;font-size:.9rem;color:var(--accent)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 640px){.container{padding:2rem 1.5rem}h1{font-size:1.5rem;margin-bottom:2rem}.answer{font-size:3rem}.modal-body{padding:2rem 1.5rem}.modal-body h1{font-size:1.5rem}.modal-body h2{font-size:1.1rem}}