*{box-sizing:border-box}:root{font-family:system-ui,-apple-system,sans-serif;line-height:1.5;color:#1a1a1a;background-color:#fff}body{margin:0;min-height:100vh}a{color:#2563eb;text-decoration:none}a:hover{text-decoration:underline}.layout{min-height:100vh;display:flex;flex-direction:column}.header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;border-bottom:1px solid #e5e7eb}.header-title{font-size:1.5rem;font-weight:600;color:#1a1a1a;text-decoration:none}.header-title:hover{text-decoration:none}.header-nav{display:flex;gap:1.5rem;align-items:center}.header-nav .link-btn{background:none;border:none;font-size:1rem;cursor:pointer;padding:0}.main{flex:1;padding:2rem;max-width:600px;margin:0 auto;width:100%}.page h1{font-size:1.75rem;margin-top:0}.page h2{font-size:1.25rem;margin-top:0}.auth-form{display:flex;flex-direction:column;gap:1rem;margin:1.5rem 0}.auth-form input{padding:.75rem 1rem;font-size:1rem;border:1px solid #d1d5db;border-radius:6px}.auth-form button{padding:.75rem 1rem;font-size:1rem;font-weight:500;background:#2563eb;color:#fff;border:none;border-radius:6px;cursor:pointer}.auth-form button:hover:not(:disabled){background:#1d4ed8}.auth-form button:disabled{opacity:.6;cursor:not-allowed}.link-btn{background:transparent!important;color:#2563eb!important;padding:.5rem!important}.link-btn:hover:not(:disabled){text-decoration:underline}.error{color:#dc2626;margin:0}.success{color:#16a34a;margin:0}.auth-callback{text-align:center;padding:2rem}.auth-callback h2{margin-bottom:1rem}