/* CSS for Image Quiz */

/* Style cho thanh đếm ngược thời gian */
#timer-bar-wrapper {
    width: 100%;
    max-width: 600px; /* Cùng chiều rộng với lưới ảnh */
    height: 15px;
    background-color: #e9ecef;
    border-radius: 50px;
    overflow: hidden;
    margin-top: -15px; /* Kéo lên một chút cho gần header */
    margin-bottom: 20px;
}

#timer-bar {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #28a745, #ffc107, #dc3545);
    background-size: 200% 100%;
    border-radius: 50px;
}

#game-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
}

#question-word-display {
    width: 100%;
    max-width: 500px;
    padding: 15px 25px;
    font-size: 2.5em;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    color: #142a5a;
    text-align: center;
    border-radius: 15px;
    text-transform: uppercase;
}

#image-options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 500px;
}

.image-option-card {
    aspect-ratio: 1 / 1;
    background-color: white;
    border-radius: 15px;
    cursor: pointer;
    overflow: hidden;
    border: 4px solid transparent;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
    box-sizing: border-box;
}

.image-option-card:hover {
    transform: translateY(-5px);
    border-color: #ffc107;
}

.image-option-card img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 5px;
}

/* States for cards after selection */
.image-option-card.reveal.correct {
    border-color: #28a745;
    background-color: #e9f7ef;
    transform: scale(1.05);
}

.image-option-card.reveal.incorrect {
    border-color: #dc3545;
    background-color: #fbe9eb;
    opacity: 0.6;
}

.image-option-card.disabled {
    pointer-events: none;
}

/* Responsive for mobile */
@media (max-width: 600px) {
    #image-options-grid {
        gap: 10px;
    }
    #question-word-display {
        font-size: 2em;
    }
}