.App{text-align:center;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif}.App-header{background-color:#282c34;padding:20px;color:#fff}.App-header h1{margin:0;font-size:1.8rem}main{padding:20px}footer{margin-top:40px;padding:10px;background-color:#f8f9fa;color:#6c757d;font-size:.9rem}:root{--background-color: #ffffff;--text-color: #213547;--header-bg: #282c34;--card-bg: #f5f5f5;--card-hover-bg: #f0f0f0;--border-color: #dee2e6;--link-color: #007bff;--button-bg: #f8f9fa;--button-text: #212529;--button-active-bg: #007bff;--button-active-text: white;--button-hover-bg: #e2e6ea;--muted-text: #6c757d;--error-bg: #f8d7da;--error-text: #dc3545;--shadow-color: rgba(0, 0, 0, .1);--shadow-hover-color: rgba(0, 0, 0, .15)}.dark-mode{--background-color: #1a1a1a;--text-color: rgba(255, 255, 255, .87);--header-bg: #121212;--card-bg: #282828;--card-hover-bg: #333333;--border-color: #444444;--link-color: #61dafb;--button-bg: #333333;--button-text: #e0e0e0;--button-active-bg: #0d6efd;--button-active-text: white;--button-hover-bg: #444444;--muted-text: #a0a0a0;--error-bg: #472c2f;--error-text: #ff6b6b;--shadow-color: rgba(0, 0, 0, .3);--shadow-hover-color: rgba(0, 0, 0, .4)}body{background-color:var(--background-color);color:var(--text-color);transition:background-color .3s,color .3s}.App-header{background-color:var(--header-bg)}footer{background-color:var(--card-bg);color:var(--muted-text)}.card{background-color:var(--card-bg);box-shadow:0 2px 5px var(--shadow-color)}.card:hover{background-color:var(--card-hover-bg);box-shadow:0 4px 8px var(--shadow-hover-color)}a{color:var(--link-color)}button{background-color:var(--button-bg);color:var(--button-text);border-color:var(--border-color)}button:hover:not(:disabled){background-color:var(--button-hover-bg)}button.active{background-color:var(--button-active-bg);color:var(--button-active-text)}: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}body{margin:0;min-width:320px;min-height:100vh}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}}