:root{--font-family-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;--body-bg: #f0f0f0;--body-text: #333;--content-bg: #ffffff;--content-shadow: rgba(0, 0, 0, .1);--header-text: #1a73e8;--header-h1-weight: 300;--header-h2-weight: 500;--input-bg: #ffffff;--input-border: #ccc;--input-text: #333;--input-bg-correct: #e6ffe6;--input-border-correct: green;--input-text-correct: #255025;--input-bg-incorrect: #ffe6e6;--input-border-incorrect: red;--input-text-incorrect: #602020;--feedback-correct-text: green;--feedback-incorrect-text: red;--button-bg: #1a73e8;--button-text: #ffffff;--button-hover-bg: #1558b0;--button-disabled-bg: #ccc;--button-disabled-text: #666;--modal-overlay-bg: rgba(0, 0, 0, .8);--modal-content-bg: #ffffff;--modal-close-bg: #ffffff;--modal-close-text: #333;--modal-close-shadow: rgba(0,0,0,.2)}@media (prefers-color-scheme: dark){:root{--body-bg: #121212;--body-text: #e0e0e0;--content-bg: #1e1e1e;--content-shadow: rgba(0, 0, 0, .3);--header-text: #64b5f6;--input-bg: #2c2c2c;--input-border: #555;--input-text: #e0e0e0;--input-bg-correct: rgba(76, 175, 80, .2);--input-border-correct: #4CAF50;--input-text-correct: #a5d6a7;--input-bg-incorrect: rgba(244, 67, 54, .2);--input-border-incorrect: #f44336;--input-text-incorrect: #ef9a9a;--feedback-correct-text: #4CAF50;--feedback-incorrect-text: #f44336;--button-bg: #64b5f6;--button-text: #121212;--button-hover-bg: #42a5f5;--button-disabled-bg: #424242;--button-disabled-text: #757575;--modal-overlay-bg: rgba(0, 0, 0, .9);--modal-content-bg: #2c2c2c;--modal-close-bg: #424242;--modal-close-text: #e0e0e0;--modal-close-shadow: rgba(0,0,0,.4)}}body{font-family:var(--font-family-main);margin:0;background-color:var(--body-bg);color:var(--body-text);display:flex;justify-content:center;align-items:flex-start;padding:40px 20px;min-height:100vh;box-sizing:border-box;line-height:1.6}#root{width:100%;max-width:800px;padding:30px;background-color:var(--content-bg);border-radius:12px;box-shadow:0 8px 16px var(--content-shadow)}h1,h2{color:var(--header-text);text-align:center;margin-left:auto;margin-right:auto}h1{font-size:2.8em;font-weight:var(--header-h1-weight);margin-top:0;margin-bottom:.8em;letter-spacing:-.02em;line-height:1.2}h2{font-size:1.8em;font-weight:var(--header-h2-weight);margin-top:2em;margin-bottom:1em;line-height:1.3}.puzzle-container,.reward-container{display:flex;flex-direction:column;align-items:center;gap:25px}.input-group{display:flex;flex-direction:column;align-items:flex-start;margin-bottom:15px;width:100%;max-width:350px}.input-group label{margin-bottom:8px;font-weight:600;font-size:.95em;color:var(--body-text)}.input-field{padding:12px 15px;border:1px solid var(--input-border);background-color:var(--input-bg);color:var(--input-text);border-radius:6px;font-size:1em;width:calc(100% - 32px);transition:border-color .3s ease,background-color .3s ease}.input-field:focus{outline:none;border-color:var(--header-text);box-shadow:0 0 0 2px color-mix(in srgb,var(--header-text) 30%,transparent)}.input-field.correct{border-color:var(--input-border-correct);background-color:var(--input-bg-correct);color:var(--input-text-correct)}.input-field.incorrect{border-color:var(--input-border-incorrect);background-color:var(--input-bg-incorrect);color:var(--input-text-incorrect)}.feedback-message{font-size:.9em;margin-top:5px;font-weight:500}.feedback-message.correct{color:var(--feedback-correct-text)}.feedback-message.incorrect{color:var(--feedback-incorrect-text)}button{padding:12px 25px;font-size:1.05em;font-weight:600;color:var(--button-text);background-color:var(--button-bg);border:none;border-radius:6px;cursor:pointer;transition:background-color .2s ease,transform .1s ease;text-transform:uppercase;letter-spacing:.05em}button:hover:not(:disabled){background-color:var(--button-hover-bg);transform:translateY(-1px)}button:active:not(:disabled){transform:translateY(0)}button:disabled{background-color:var(--button-disabled-bg);color:var(--button-disabled-text);cursor:not-allowed;opacity:.7}.image-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:20px;width:100%;margin-top:25px}.grid-image{width:100%;height:auto;aspect-ratio:1 / 1;object-fit:cover;border-radius:8px;cursor:pointer;transition:transform .2s ease-in-out,box-shadow .2s ease-in-out;border:1px solid var(--input-border)}.grid-image:hover{transform:scale(1.05);box-shadow:0 4px 12px var(--content-shadow)}.image-modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:var(--modal-overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000;padding:20px;box-sizing:border-box}.image-modal-content{position:relative;background-color:var(--modal-content-bg);box-shadow:0 5px 20px var(--modal-close-shadow);max-width:calc(100vw - 40px);max-height:calc(100vh - 40px);display:flex;justify-content:center;align-items:center;border-radius:8px}.image-modal-content img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;border-radius:6px}.image-modal-close{position:absolute;top:-15px;right:-15px;background-color:var(--modal-close-bg);color:var(--modal-close-text);border:none;border-radius:50%;width:36px;height:36px;font-size:22px;font-weight:700;line-height:1;cursor:pointer;display:flex;justify-content:center;align-items:center;box-shadow:0 2px 5px var(--modal-close-shadow);z-index:10;transition:background-color .2s ease,transform .2s ease}.image-modal-close:hover{transform:scale(1.1);background-color:color-mix(in srgb,var(--modal-close-bg) 80%,var(--body-text))}