* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    overflow-x: hidden;
    font-family: 'Montserrat', sans-serif;
    background-color: #f5f5f5;
    color: #000000;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2vh 3vh 2vw;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.image-container,
.secondary-image-container {
    width: 100%;
    max-width: 800px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-image,
.secondary-image {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    display: block;
}

.third-image-container {
    width: 100%;
    max-width: 800px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.third-image {
    width: 33.33%; /* 1/3 oranında küçük */
    height: auto;
    object-fit: contain;
    border-radius: 6px;
    display: block;
}

.buy-button {
    margin-top: 10px;
}

.buy-button a {
    display: inline-block;
    background-color: #0066cc;
    color: #ffffff;
    padding: 12px 24px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.buy-button a:hover {
    background-color: #004499;
}

.description-text,
.feedback-text {
    max-width: 800px;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.7;
    padding: 0 10px;
}

.feedback-text a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.feedback-text a:hover {
    color: #004499;
    text-decoration: underline;
}

.linkedin-link {
    display: flex;
    justify-content: center;
    margin-top: -20px;
}

.linkedin-link a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #000000;
    font-weight: 500;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.linkedin-link a:hover {
    color: #004f7c;
}

.linkedin-icon {
    width: 28px;
    height: 28px;
    transition: transform 0.3s ease;
}

.linkedin-link a:hover .linkedin-icon {
    transform: scale(1.1);
}


/* Responsive Design */
@media screen and (max-width: 768px) {
    .buy-button a {
        font-size: 1rem;
        padding: 10px 20px;
    }

    .description-text,
    .feedback-text {
        font-size: 1rem;
    }
}

@media screen and (max-width: 480px) {
    .buy-button a {
        font-size: 0.95rem;
        padding: 10px 16px;
    }

    .description-text,
    .feedback-text {
        font-size: 0.95rem;
    }
}