website/static/main.css

/* general page styling */
:root {
  --main-bg-color: #020404;
  --main-bg-contrast-color: oklch(40% 0 0);
  --main-text-color: #efe3e3;
  --main-accent-color: #f9c827;
  --secondary-accent-color: #ff925f;

  scroll-behavior: smooth;
}

@media(prefers-color-scheme: light) {
  :root {
    --main-bg-color: #fdfbfb;
    --main-bg-contrast-color: oklch(90% 0 0);
    --main-text-color: #101c1c;
    --main-accent-color: #836400;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto",
    "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans",
    "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;

  overflow-x: hidden;

  background-color: var(--main-bg-color);
  color: var(--main-text-color);

  margin: 3rem;
  margin-top: 0;
}

a {
  color: var(--main-accent-color);

  &:hover,
  &:focus {
    color: var(--secondary-accent-color);
  }
}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, "Courier New",
    monospace;
}

img {
  display: block;

  &.small {
    max-height: 10em;
    width: auto;
  }
}

h1 {
  font-weight: 700;
  font-size: 1.8rem;
  margin-bottom: 0.5em;
  color: var(--main-accent-color);
}
h2 {
  font-size: 1.5rem;
}
h3 {
  font-size: 1.2rem;
}

/* page header */

#space-image {
  height: 8vh;
  transition: height 0.2s;

  &:hover {
    height: 11vh;
  }
}

#header-image {
  max-height: 100%;
}

header {
  pointer-events: none;
  display: grid;
  grid-template:
    "logo . nav        nav"
    "logo . space-text space-image" min-content
    "logo . .          ." min-content /
    minmax(min-content, 25vw) 1fr auto minmax(0, min-content);
  overflow: hidden;

  * {
    pointer-events: initial;
  }

  #logo {
    grid-area: logo;
  }
  nav {
    grid-area: nav;
  }
  #space-text {
    grid-area: space-text;
    text-align: right;
    margin-right: 1em;
  }
  #space-image-container {
    grid-area: space-image;
  }
  #menu-button {
    display: none;
  }
  #menu-label {
    display: none;
  }
  #menu-checkbox {
    display: none;
  }
}

@media screen and (width > 1700px) {
  header {
    position: fixed;
    /* subtract exactly the margins to get the 100% horizontal fill we need */
    width: calc(100vw - 2 * 3em);
  }
}

/* mobile header, just some vertical rearranging and smaller margins */
@media screen and (width < 650px) {
  body {
    margin: 1.5rem;
    margin-top: 0;
  }

  header {
    grid-template:
      "logo hamburger-menu" minmax(3cm, 10vh)
      "nav nav"
      "space-text space-image" min-content /
      auto min-content;

    #space-image-container {
      margin-top: auto;
      margin-bottom: auto;
      margin-left: auto;
    }
  }

  nav {
    transition:
      max-height 0.2s cubic-bezier(0.86, 0, 0.07, 1),
      margin 0.2s cubic-bezier(0.86, 0, 0.07, 1);
    overflow-y: hidden;
    height: auto;
  }

  /* hamburger menu */
  #menu-checkbox:not(:checked) ~ nav {
    max-height: 0;
    margin-top: 0;
    margin-bottom: 0;
  }
  #menu-checkbox:checked ~ nav {
    max-height: 40vh;
  }
  #menu-label {
    grid-area: hamburger-menu;
    display: block !important;
    margin: auto;
    margin-bottom: 1em;
    height: 1.2em;
    width: 2em;
  }
  #menu-button {
    display: block !important;
    margin-top: 0.5em;

    &,
    &::before,
    &::after {
      display: block;
      background-color: var(--main-text-color);
      position: absolute;
      height: 0.2em;
      width: 2em;
      transition: all 200ms ease-in-out;
      border-radius: 2px;
    }

    &::before {
      content: "";
      margin-top: -0.5em;
    }

    &::after {
      content: "";
      margin-top: 0.5em;
    }
  }
  #menu-checkbox:checked + #menu-label #menu-button {
    background: transparent;
    &::before {
      margin-top: 0;
      transform: rotate(45deg);
    }

    &::after {
      margin-top: 0;
      transform: rotate(-45deg);
    }
  }
}

/* skip to content element, lots of positioning styles copied from html5-boilerplate */
#skip-header {
  background: var(--main-bg-color);
  border: 0;
  clip: rect(0, 0, 0, 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;

  &:active,
  &:focus {
    clip: auto;
    height: auto;
    margin: 1em;
    overflow: visible;
    white-space: inherit;
    width: auto;
  }
}

nav {
  display: flex;
  justify-content: end;
  flex-wrap: wrap;
  margin: 1em;

  a {
    height: min-content;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--main-text-color);
    margin-left: 1em;
    margin-bottom: 0.4em;
    text-transform: uppercase;
    text-decoration: underline 0.15em var(--main-text-color);
    transition:
      text-decoration-color 0.3s,
      color 0.25s;

    &:focus,
    &:hover {
      text-decoration-color: var(--main-accent-color);
      color: var(--main-accent-color);
    }
  }
}

/* main grid */

main {
  display: grid;
  grid-template: ". content ." auto / 1fr minmax(min-content, 45rem) 1fr;

  section {
    grid-area: content;
  }

  img {
    height: auto;
    max-width: 100%;
    border-radius: 1em;
  }
}

footer {
  background-color: var(--main-bg-color);
  text-align: center;
  padding-top: 1.5em;
  margin-top: 1.5em;
  font-weight: bold;
  border-top: 2px solid transparent;
  border-image: linear-gradient(
    90deg,
    transparent,
    var(--secondary-accent-color),
    transparent
  );
  border-image-slice: 1;
}

/* calendar */

#dbkcalendar {
  * {
    border-radius: 0.25em;
  }

  .calendar-date th {
    padding: 0.5em 1em;
    background: var(--main-bg-contrast-color);
  }
  td {
    padding: 1em;
  }
  p {
    margin: 0;
    max-height: min-content;

    &.categories {
      margin-top: 0.2em;

      em {
        background-color: var(--main-accent-color);
        padding: 0 0.25em;
        font-style: normal;
        font-weight: bold;
        color: var(--main-bg-color);
      }
    }
  }
}

em.summary {
  font-style: normal;
  font-weight: bold;
}

table {
  border-spacing: 0;
  border-collapse: collapse;

  * {
    text-align: left;
    vertical-align: top;
  }
}