:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.signup-container{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;padding:20px}.signup-form{background:#fff;padding:40px;border-radius:12px;box-shadow:0 20px 40px #0000001a;width:100%;max-width:600px}.signup-form h1{color:#333;margin-bottom:8px;font-size:28px;font-weight:600}.signup-form p{color:#666;margin-bottom:30px;font-size:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:#333;font-weight:500;font-size:14px}.form-group input{width:100%;padding:12px 16px;border:2px solid #e1e5e9;border-radius:8px;font-size:16px;transition:border-color .2s ease;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#667eea}.submit-btn{width:100%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:16px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;margin-top:10px}.submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #667eea4d}.submit-btn:disabled{opacity:.7;cursor:not-allowed;transform:none}.message{margin-top:20px;padding:12px 16px;border-radius:8px;font-weight:500}.message.success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.message.error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}@media (max-width: 768px){.signup-container{padding:10px}.signup-form{padding:30px 20px}.form-row{grid-template-columns:1fr;gap:0}.signup-form h1{font-size:24px}}