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infinite;margin-right:8px;vertical-align:middle}.loading-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#fffc;display:flex;justify-content:center;align-items:center;z-index:10;border-radius:inherit}.loading-card{min-height:200px;display:flex;justify-content:center;align-items:center;background:#f9f9f9;border-radius:8px;border:1px dashed #ddd}.global-loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#ffffffd9;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:9999;gap:1rem}.global-loading-overlay .spinner{width:50px;height:50px;border:4px solid #e0e0e0;border-top-color:#667eea;border-radius:50%;animation:spin .8s linear infinite}.global-loading-overlay .loading-text{color:#555;font-size:1rem;font-weight:500;text-align:center}.sentence-text-input{width:100%;padding:.5rem;font-size:.95rem;border:1px solid #ddd;border-radius:4px;background:#fff;color:#333;resize:vertical;min-height:2.5rem;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease}.sentence-text-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea33}.sentence-text-input:hover{border-color:#b0b0b0}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.login-box{background:#fff;padding:2.5rem;border-radius:10px;box-shadow:0 10px 25px #0003;width:100%;max-width:400px}.login-box h1{margin:0 0 2rem;color:#333;text-align:center;font-size:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;color:#333;font-weight:500;font-size:.95rem}.form-group input{width:100%;padding:.75rem;border:2px solid #e0e0e0;border-radius:5px;font-size:1rem;transition:border-color .3s;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#667eea}.form-group input:disabled{background-color:#f5f5f5;cursor:not-allowed}.error-message{background-color:#fee;color:#c33;padding:.75rem;border-radius:5px;margin-bottom:1rem;text-align:center;font-size:.9rem}.login-button{width:100%;padding:.875rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:5px;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.login-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 5px 15px #667eea66}.login-button:active:not(:disabled){transform:translateY(0)}.login-button:disabled{opacity:.6;cursor:not-allowed}:root{font-family:Inter,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}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;min-width:320px;min-height:100vh}#root{max-width:1280px;margin:0 auto;padding:2rem}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}}