.app-container{width:100%;height:100vh;display:flex;flex-direction:column;overflow:hidden}.app-header{padding:1rem 2rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center;box-shadow:0 2px 8px #0000001a}.app-header h1{margin:0;font-size:2rem}.app-header p{margin:.5rem 0 0;opacity:.9;font-size:.95rem}.split-container{display:flex;flex:1;overflow:hidden}.left-pane,.right-pane{flex:1;display:flex;flex-direction:column;overflow:hidden}.left-pane{border-right:2px solid #e0e0e0}.pane-header{padding:1rem;background-color:#f5f5f5;border-bottom:1px solid #e0e0e0}.pane-header h2{margin:0;font-size:1.25rem;color:#333}.json-input{flex:1;width:100%;padding:1rem;border:none;resize:none;font-family:Courier New,monospace;font-size:14px;line-height:1.5;background-color:#1e1e1e;color:#d4d4d4;outline:none}.json-view-container{flex:1;overflow:auto;background-color:#f8f9fa;padding:1rem}.error-message{padding:1rem;background-color:#fee;border:1px solid #fcc;border-radius:8px;color:#c33}.error-message h3{margin:0 0 .5rem;font-size:1.1rem}.error-message p{margin:0;font-family:monospace;font-size:.9rem}.placeholder{display:flex;align-items:center;justify-content:center;height:100%;color:#999;text-align:center}.placeholder p{font-size:1.1rem}@media(prefers-color-scheme:light){.pane-header h2{color:#333}}@media(max-width:768px){.split-container{flex-direction:column}.left-pane{border-right:none;border-bottom:2px solid #e0e0e0;max-height:50vh}}: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}#root{width:100%;height:100vh}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;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}}