: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;--heading-color: rgba(255, 255, 255, .87);--subtle-text-color: #aaa;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;--heading-color: #213547;--subtle-text-color: #555}a:hover{color:#747bff}button{background-color:#f9f9f9}}#root{max-width:1400px;margin:0 auto;padding:2rem}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid #ddd}.header-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem}.header-title{flex:1}.app-header h1{margin-bottom:.5rem;color:var(--heading-color);font-size:2rem}.app-header p{color:var(--subtle-text-color);font-size:1rem}.app-main{flex:1;display:flex;flex-direction:column;align-items:center;width:100%}.map-form-container{display:flex;flex-direction:column;gap:2rem;width:100%;align-items:center}@media(min-width:1024px){.map-form-container{flex-direction:row;align-items:flex-start;justify-content:center}}.app-footer{margin-top:2rem;padding-top:1rem;border-top:2px solid #ddd;text-align:center;color:#666;font-size:.9rem}.app-footer p{margin:.5rem 0}.app-error{width:100%;max-width:900px;margin:1.5rem auto 0;padding:1rem 1.25rem;border:2px solid #f44336;border-left-width:6px;border-radius:8px;background-color:#ffebee;color:#b71c1c;line-height:1.5}.map-container{margin-bottom:2rem}.map-container h2{text-align:center;margin-bottom:1rem;color:var(--heading-color)}.city-grid-wrapper{display:inline-block;position:relative}.city-grid{display:inline-block;border:var(--grid-border) solid #333;background-color:#888;padding:var(--grid-padding);border-radius:8px}.building-street-row,.horizontal-street-row{display:flex}.building-cell{width:var(--building-size);height:var(--building-size);box-sizing:border-box;border:2px solid #555;display:flex;align-items:center;justify-content:center;position:relative;background-color:#e8e8e8;border-radius:4px;box-shadow:0 2px 4px #0003}.building-label{font-size:15px;font-weight:700;text-align:center;z-index:1;padding:8px;color:#333}.vertical-street{width:var(--street-size);height:var(--building-size);background-color:#666;position:relative;display:flex;align-items:center;justify-content:center;background-image:repeating-linear-gradient(to bottom,transparent,transparent 10px,#888 10px,#888 15px)}.horizontal-street{width:var(--building-size);height:var(--street-size);background-color:#666;position:relative;display:flex;align-items:center;justify-content:center;background-image:repeating-linear-gradient(to right,transparent,transparent 10px,#888 10px,#888 15px)}.intersection{width:var(--street-size);height:var(--street-size);background-color:#666;position:relative;display:flex;align-items:center;justify-content:center}.icon{font-size:32px;z-index:2;filter:drop-shadow(0 2px 4px rgba(0,0,0,.5))}.icon.with-direction{display:flex;flex-direction:column;align-items:center;gap:0}.direction-arrow{font-size:20px;line-height:1;margin-bottom:-4px}.building-cell .icon{position:absolute}.building-cell .start-icon{top:5px;left:5px}.building-cell .end-icon{bottom:5px;right:5px}.legend{margin-top:1rem;display:flex;gap:2rem;justify-content:center;font-size:14px}.legend-item{display:flex;align-items:center;gap:.5rem}.legend-item .icon{position:static;font-size:20px;filter:none}.legend-item .icon.with-direction{display:inline-flex;flex-direction:column;align-items:center;gap:0;vertical-align:middle}.legend-item .direction-arrow{font-size:14px;line-height:1}.path-animation-overlay{position:absolute;top:calc(var(--grid-border) + var(--grid-padding));left:calc(var(--grid-border) + var(--grid-padding));pointer-events:none;z-index:10}.animated-person-icon,.animated-direction-arrow{filter:drop-shadow(0 2px 4px rgba(0,0,0,.5));transition:transform .5s ease-in-out}.animated-person-icon{animation:bounce .5s ease-in-out}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}.directions-form-container{margin:2rem 0}.directions-form-container h2{text-align:center;margin-bottom:1rem;color:var(--heading-color)}.directions-input{width:100%;padding:1rem;font-size:16px;border:2px solid #ccc;border-radius:8px;font-family:inherit;resize:vertical;box-sizing:border-box;background-color:#fff;color:#213547}.directions-input:focus{outline:none;border-color:#4caf50}.directions-input:disabled{background-color:#f5f5f5;color:#777;cursor:not-allowed}.directions-form-container label{cursor:pointer}.button-group{display:flex;gap:1rem;margin-top:1rem}.submit-button,.clear-button{flex:1;padding:.75rem 1.5rem;font-size:16px;border:none;border-radius:8px;cursor:pointer;font-weight:700;transition:background-color .3s}.submit-button{background-color:#4caf50;color:#fff}.submit-button:hover:not(:disabled){background-color:#45a049}.submit-button:disabled{background-color:#ccc;cursor:not-allowed}.clear-button{background-color:#f44336;color:#fff}.clear-button:hover:not(:disabled){background-color:#da190b}.clear-button:disabled{background-color:#ccc;cursor:not-allowed}.results-container{margin:2rem 0;padding:2rem;background-color:#f9f9f9;border-radius:8px;border:2px solid #ddd}.score-section{text-align:center;margin-bottom:2rem}.score-section h2{margin-bottom:1rem;color:#333}.score-display{display:flex;justify-content:center;gap:3rem;margin:1rem 0;flex-wrap:wrap}.score-item{display:flex;flex-direction:column;align-items:center;gap:1rem}.score-label{text-align:center;font-size:14px;font-weight:600;color:#555;line-height:1.4}.score-circle{width:120px;height:120px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:700;color:#fff;box-shadow:0 4px 6px #0000001a}.translation-section{margin:2rem 0}.translation-section h3{margin-bottom:1rem;color:#333}.translation-text{background-color:#fff;padding:1.5rem;border-radius:8px;border:1px solid #ddd;font-size:16px;line-height:1.6;color:#555;font-style:italic}.feedback-section{margin:2rem 0}.feedback-section h3{margin-bottom:1rem;color:#333}.feedback-content{background-color:#fff;padding:1.5rem;border-radius:8px;border:1px solid #ddd;line-height:1.8;font-size:16px;color:#333}.feedback-content .error{background-color:#ffebee;padding:2px 4px;border-radius:3px;text-decoration:line-through;color:#c62828}.feedback-content .correction{background-color:#e8f5e9;padding:2px 4px;border-radius:3px;color:#2e7d32;font-weight:700}.feedback-content .annotation{color:#1976d2;font-style:italic;font-size:14px;display:block;margin-top:.5rem}.native-example-section{margin:2rem 0}.native-example-section h3{margin-bottom:1rem;color:#333}.native-example-text{background-color:#e3f2fd;padding:1.5rem;border-radius:8px;border:2px solid #2196F3;font-size:18px;line-height:1.6;color:#1565c0;font-weight:500}.next-button{width:100%;padding:1rem;font-size:18px;background-color:#2196f3;color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:700;transition:background-color .3s;margin-top:1.5rem}.next-button:hover{background-color:#1976d2}.score-explanation{max-width:640px;margin:1.25rem auto 0;padding:.9rem 1.1rem;background-color:#fff;border:1px solid #ddd;border-radius:8px;color:#333;font-size:15px;line-height:1.6;text-align:left}.language-switcher{display:flex;gap:.5rem;background-color:#ffffff1a;padding:.5rem;border-radius:8px;border:2px solid rgba(255,255,255,.2)}.language-button{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:none;border-radius:6px;background-color:transparent;color:#ddd;cursor:pointer;transition:all .3s ease;font-size:16px;font-weight:500}.language-button:hover{background-color:#ffffff1a;color:#fff}.language-button.active{background-color:#2196f3;color:#fff;box-shadow:0 2px 8px #2196f366}.language-flag{font-size:20px}.language-text{font-weight:600}