/* --- Base Style --- */

body {
    background-color: #f8f9fa;
    color: #333333;
    margin: 0;
    font-family: "Roboto", serif;
    font-weight: 300;
}

p {
    font-family: "Roboto", serif;
    font-weight: 300;
    font-size: 18px;
    text-align: justify;
}

a {
    text-decoration: underline;
    color: #00aaff;
}

a:hover {
    cursor: pointer;
}

/* Heading Styles */

h1 {
    font-family: "Roboto", serif;
    font-weight: 700;
}

h2 {
    font-family: "Roboto", serif;
    font-weight: 700;
}

h3 {
    font-family: "Roboto", serif;
    font-weight: 700;
}

h4 {
    font-family: "Roboto", serif;
    font-weight: 500;
}

/* Button Styles */

button {
    background-color: #00aaff;
    border: none;
    color: white;
    padding: 15px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    cursor: pointer;
    border-radius: 10px;
    font-family: "Roboto", serif;
    font-weight: 900;
    width: fit-content;
}

/* Layout  */

.wrapper {
    display: flex;
    flex-direction: column;
    max-width: 700px;
    margin: 0 auto;
}

.chapter_navigation {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.chapter_navigation_first_page {
    display: flex;
    flex-direction: row;
    justify-content: end;
}

.chapter_navigation_last_page {
    display: flex;
    flex-direction: row;
    justify-content: start;
}

.about {
    display: flex;
    max-width: 700px;
    height: 90vh;
    text-align: center;
    align-items: center;
    margin: 0 auto;
}

/* Images */

.article_image {
    width: 100%;
    height: auto;
    margin-top: 10px;
    margin-bottom: 10px;
}

.gallery {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.gallery_image {
    width: 33%;
}

/* Summary Section */

.summary {
    background-color: #CFE2FF;
    padding: 16px;
    border: solid 1px #00aaff;
    border-radius: 5px;
    margin-bottom: 1em;
    margin-top: 1em;
}

.summary h3 {
    margin-top: 0;
}

/* Important Section */

.important {
    background-color: rgba(210, 4, 45, 0.25);
    padding: 16px;
    border: solid 1px rgba(210, 4, 45, 1);
    border-radius: 5px;
    margin-bottom: 1em;
    margin-top: 1em;
}

.important h3 {
    margin-top: 0;
}

/* Opinion Section */

.opinion {
    background-color: rgba(255, 204, 128, 0.25);
    padding: 16px;
    border: solid 1px rgba(255, 204, 128, 1);
    border-radius: 5px;
    margin-bottom: 1em;
    margin-top: 1em;
}

.opinion h3 {
    margin-top: 0;
}

/* Quiz */

.quiz {
    background-color: rgba(0, 0, 0, 0.1);
    padding: 16px;
    border: solid 1px rgba(0, 0, 0, 1);
    border-radius: 5px;
    margin-bottom: 1em;
    margin-top: 1em;
}

.quiz h3 {
    margin-top: 0;
}

.quiz button {
    margin-top: 1em;
    margin-bottom: 1em;
}