body {
    font-family: Helvetica, Arial, sans-serif;
    line-height: 1.5;
    font-weight: 400;
    margin: 0;
    background-color: #2a2a2a;
    color: #ffffff;
    padding: 0;
}
/* ====== Main Content Wrapper ====== */
.main-content {
    max-width: 800px;           /* keeps text readable on large screens */
    margin-left: auto;           /* center horizontally */
    margin-right: auto;
    padding-left: 20px;          /* inspired by .desc padding */
    padding-right: 20px;
    padding-top: 30px;           /* adds breathing space from cover photo */
    padding-bottom: 30px;
    display: block;              /* default block layout */
    box-sizing: border-box;      /* ensures padding doesn't exceed max-width */
    margin-bottom: 25px; /* space between headings, paragraphs, images */
}

.cover-photo {
    width: 100%;
    height: 280px; 
    background-image: url("/assets/space.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* Links */
a {
    color: orange;             
    text-decoration: none;      
}

a:active {
    color: orange;
}

a:visited {
    color: orange;             
}

a:hover {
    text-decoration: underline; /* optional. . it underline on hover */
}
      
.date {
    color: #dddddd;
    font-size: 15px;
}

.desc {
    margin-bottom: 30px;
}

img {
    max-width: 100%;
    border-radius: 6px;
    margin: 20px 0;
    display: block;
}

.figure {
    text-align: center;
    margin-bottom: 30px;
}

.caption {
    font-size: 14px;
    color: #cccccc;
    margin-top: 5px;
}

.video {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

.video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}


.note {
    background-color: #1f1f1f;
    border-left: 4px solid orange;
    padding: 15px 20px;
    margin: 30px 0;
}

.note strong {
    color: orange;
}

h2 {
    font-size: 22px;
    margin-top: 40px;
    margin-bottom: 15px
}

h3 {
    font-size: 18px;
    margin-top: 30px;
    margin-bottom: 10px;
    color: #eeeeee;
}
.divider {
    margin: 50px 0;
    border-bottom: 1px solid #444;
}

.toc {
    background-color: #1f1f1f;
    border-left: 4px solid #444;
    padding: 15px 20px;
    margin: 30px 0;
}

.toc strong {
    color: #ffffff;
    display: block;
    margin-bottom: 10px;
}

.toc ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.toc li {
    margin-bottom: 8px;
}

.toc a {
    color: orange;
    font-size: 15px;
}

html {
    scroll-behavior: smooth;
}

.site-footer {
    margin-top: 60px;
    text-align: center;
    font-size: 14px;
    color: #bbbbbb;
}

.footer-divider {
    margin: 40px 0 20px;
    border-bottom: 1px solid #444;
}

.site-footer p {
    margin: 6px 0;
}

.site-footer .powered {
    font-size: 13px;
    color: #999999;
}