:root{--primary-color: #2c3e50;--primary-hover: #1a252f;--secondary-color: #f5f5f5;--secondary-border: #ddd;--success-color: #4caf50;--error-color: #f44336;--text-color: #333;--text-light: #666;--border-radius: 6px;--transition: all .3s ease;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji";font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color-scheme:light}*{margin:0;padding:0;box-sizing:border-box}html,body,#app{width:100%;height:100%}body{background-color:#fff;color:var(--text-color);line-height:1.5}a{color:var(--primary-color);text-decoration:none;transition:var(--transition)}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}input,textarea{font-family:inherit}h1,h2,h3,h4,h5,h6{line-height:1.2}.container{min-height:100vh;display:flex;flex-direction:column;background-color:#fff}.main{flex:1;padding:2rem;max-width:1400px;margin:0 auto;width:100%}.title{font-size:1.8rem;font-weight:600;margin-bottom:2rem;color:var(--text-color);text-align:left}.layout{display:grid;grid-template-columns:2fr minmax(5.5rem,10vw) 2fr;gap:1.5rem;min-height:500px}.panel{display:flex;flex-direction:column;border:1px solid var(--secondary-border);border-radius:var(--border-radius);background-color:#fafafa;padding:1.5rem}.input-panel{min-height:400px}.textarea{flex:1;width:100%;padding:1rem;border:1px solid var(--secondary-border);border-radius:var(--border-radius);font-size:.95rem;resize:none;font-family:inherit;line-height:1.6;transition:var(--transition)}.textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #2c3e501a}.hint{margin-top:.75rem;font-size:.85rem;color:var(--text-light)}.button-panel{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem;padding:.5rem}.btn{padding:.75rem 1rem;border:none;border-radius:var(--border-radius);font-size:.95rem;font-weight:500;cursor:pointer;transition:var(--transition);white-space:nowrap;width:100%;text-align:center;display:inline-flex;align-items:center;justify-content:center}.btn-primary{background-color:#27ae60;color:#fff}.btn-primary:hover:not(:disabled){background-color:#229954;box-shadow:0 2px 10px #27ae604d}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-primary.loading{opacity:.8}.btn-secondary{background-color:var(--secondary-color);color:var(--text-color);border:1px solid var(--secondary-border)}.btn-secondary:hover:not(:disabled){background-color:#efefef;border-color:#bbb}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}.button-panel .btn-secondary:last-child{background-color:#f39c12;color:#fff;border-color:#f39c12}.button-panel .btn-secondary:last-child:hover:not(:disabled){background-color:#e67e22;border-color:#e67e22;box-shadow:0 2px 10px #f39c124d}.output-panel{min-height:400px}.output-box{flex:1;padding:1rem;border:1px solid var(--secondary-border);border-radius:var(--border-radius);background-color:#fff;overflow-y:auto}.output-text{margin:0;color:var(--text-color);white-space:pre-wrap;word-wrap:break-word;font-size:.95rem;line-height:1.8}.output-placeholder{margin:0;color:var(--text-light);text-align:center;display:flex;align-items:center;justify-content:center;height:100%}.modal-overlay{position:fixed;bottom:1.5rem;right:1.5rem;background-color:#fff;border-radius:var(--border-radius);box-shadow:0 4px 12px #00000026;max-width:350px;width:calc(100% - 3rem);animation:slideIn .3s ease;z-index:1000;pointer-events:auto}.modal-content{display:contents}.modal-header{display:flex;justify-content:space-between;align-items:flex-start;padding:1rem 1rem 0}.modal-header h3{margin:0;font-size:.95rem;font-weight:600;color:var(--text-color)}.modal-close{background:none;border:none;font-size:1.2rem;color:var(--text-light);cursor:pointer;width:20px;height:20px;padding:0;display:flex;align-items:center;justify-content:center;flex-shrink:0}.modal-close:hover{color:var(--text-color)}.modal-body{padding:.75rem 1rem;font-size:.95rem;line-height:1.5;color:var(--text-color)}.success-modal .modal-overlay{background-color:#27ae60;border:none;box-shadow:0 4px 12px #27ae604d}.success-modal .modal-body{color:#fff;padding:1rem;text-align:center;font-weight:500}.error-modal .modal-overlay{background-color:#f44336;border:none;box-shadow:0 4px 12px #f443364d}.error-modal .modal-body{color:#fff;padding:1rem;text-align:center;font-weight:500}.modal-footer{padding:.75rem 1rem;display:flex;gap:.5rem;justify-content:flex-end}.modal-footer .btn{width:auto;min-width:60px;padding:.5rem .75rem;font-size:.85rem}.fade-enter-active,.fade-leave-active{transition:all .3s ease}.fade-enter-from,.fade-leave-to{transform:translate(400px);opacity:0}@keyframes slideIn{0%{transform:translate(400px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slideOut{0%{transform:translate(0);opacity:1}to{transform:translate(400px);opacity:0}}@media(max-width:1200px){.main{padding:1.5rem}.layout{grid-template-columns:2fr minmax(5rem,10vw) 2fr;gap:1rem}}@media(max-width:900px){.layout{grid-template-columns:1fr;min-height:auto;gap:1rem}.button-panel{flex-direction:row;min-height:auto}.button-panel .btn{width:auto;flex:1}.input-panel,.output-panel{min-height:300px}}@media(max-width:768px){.main{padding:1rem}.title{font-size:1.5rem;margin-bottom:1.5rem}.input-panel,.output-panel{min-height:250px}.textarea{padding:.75rem;font-size:16px}.modal-overlay{width:calc(100% - 2rem);bottom:1rem;right:1rem}}@media(max-width:480px){.main{padding:.75rem}.title{font-size:1.25rem;margin-bottom:1rem}.layout{gap:.75rem}.panel{padding:1rem}.input-panel,.output-panel{min-height:200px}.btn{padding:.6rem .75rem;font-size:.9rem}.modal-header,.modal-body,.modal-footer{padding:1rem}}