: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}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2)}#root{width:100vw;height:100vh;overflow:hidden}.app-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 2px 10px #0000001a}.app-header h1{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-logo{height:56px;width:auto;max-width:300px;object-fit:contain}.auth-controls{display:flex;align-items:center;gap:1rem}.sign-in-btn{padding:.5rem 1.5rem;font-size:.95rem;font-weight:600;color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:8px;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 8px #667eea4d}.sign-in-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}main{height:calc(100vh - 70px);display:flex;align-items:center;justify-content:center}.welcome-screen{text-align:center;padding:3rem;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;box-shadow:0 20px 60px #0003;max-width:500px;margin:2rem;position:relative}.welcome-screen h2{font-size:2.5rem;font-weight:700;margin-bottom:1rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.welcome-logo{max-width:400px;width:100%;height:auto;margin-bottom:2rem}.welcome-screen p{font-size:1.1rem;color:#666;margin-bottom:2rem;line-height:1.6}.get-started-btn{padding:1rem 2.5rem;font-size:1.1rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #667eea66}.get-started-btn:hover{transform:translateY(-3px);box-shadow:0 6px 20px #667eea80}