.modal {position: fixed;z-index: 10000;left: 0;top: 0;width: 100vw;height: 100vh;background-color: rgba(0, 0, 0, 0.85);display: none;justify-content: center;align-items: center;opacity: 1;transition: opacity 0.4s ease;overflow: hidden;padding: 20px;box-sizing: border-box;}.modal.fade-out {opacity: 0;pointer-events: none;}.modal-content {background-color: #fff;padding: 25px 30px;border-radius: 10px;max-width: 480px;width: 100%;text-align: center;position: relative;box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);max-height: 90vh;overflow-y: auto;}#image-options {display: flex;flex-wrap: wrap;gap: 15px;justify-content: center;margin: 15px 0;}#image-options img {width: 120px;height: 120px;border-radius: 8px;cursor: pointer;border: 2px solid transparent;transition: border-color 0.3s ease;object-fit: cover;}#image-options img:hover {border-color: var(--secondary);}#challenge-message {min-height: 1.6em;margin-bottom: 15px;font-weight: 700;font-size: 1rem;user-select: none;}@media (max-width: 500px) {#image-options img {width: 90px;height: 90px;}.modal-content {padding: 20px 15px;}}