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

body {
  margin: 0;
  font-family: "Libre Baskerville", serif;
  font-size: 16px;
  overflow-y: auto;
}

#forma {
  box-sizing: border-box;
  width: 100%;
  padding: 1rem;

  display: flex;
  flex-direction: row;
}

@media (min-width: 1000px) {
  #forma {
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
  }
}

#navigatio {
  width: 250px;
  flex: 0 0 250px;
  background: #eaeaea;
  display: flex;
  flex-direction: column;
  padding: 8px;
}

#navigatio .insigne { width: 128px; }

#navigatio h1 {
  font-size: 18px;
  margin: 8px 0px;
}

#navigatio section {
  margin: 8px 0px;
  padding: 0px;
}

#navigatio a {
  display: block;
  text-decoration: none;
  color: #33a;
  margin: 4px;
}

#navigatio section a {
  margin-left: 16px;
}

#navigatio a:hover {
  color: #00f;
}

#caput, #umbraculum { display: none; } /* tantum in telephono ostenduntur */

/* Navigatio ad telephonos accomodata */
@media (max-width: 1000px) {
  #navigatio {
    position: fixed;
    top: 46px;
    left: -2px;
    border: 2px solid black;
    display: none;
    z-index: 1;
  }
  #navigatio.ostenditur {
    display: flex;
  }
  #navigatio .insigne { display: none }
  #navigatio h1 { font-size: 16px; margin: 4px; }
  #umbraculum {
    position: fixed;
    top: 0px;
    left: 0px;
    right: 0px;
    bottom: 0px;
    background: rgba(0,0,0,0.5);
    display: none;
  }
  #umbraculum.ostenditur {
    display: block;
  }
  #caput {
    position: fixed;
    display: flex;
    flex-direction: row;
    align-items: center;
    top: 0px;
    left: 0px;
    right: 0px;
    height: 36px;
    background: white;
    height: 48px;
    border-bottom: 2px solid black;
    z-index: 1;
  }
  #caput button {
    background: white;
    border: 1px solid black;
    margin: 0px 16px 0px 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
  }
  #caput-titulus {
    flex-grow: 1;
  }
  .caput-insigne {
    width: 36px;
    height: 36px;
  }
  body {
    padding-top: 48px;
  }
}


#corpus {
  flex-grow: 1;
  padding: 16px;
  background: #f8f8f8;
  overflow-x: hidden;
}

h1 {
  font-size: 24px;
  margin: 24px 0px 16px 0px;
}

h2 {
  font-size: 20px;
  margin: 24px 0px 16px 0px;
}

h3 {
  font-size: 18px;
  color: #888;
  margin: 24px 0px 16px 0px;
}

p {
  margin: 16px 0px;
  line-height: 1.5em;
}

li {
  margin: 8px 8px 8px 24px;
  line-height: 1.5em;
}

.invitatio {
  border: 1px solid #ccc;
  background: #ffffe0;
  border-radius: 16px;
  padding: 24px;
}

.invitationis-elementum {
  display: flex;
  flex-direction: row;
  align-items: center;
  margin: 16px 0px;
}

.invitationis-imago {
  font-size: 32px;
  margin-right: 32px;
}

/* Imago una, quae non est in pinacotheca */
div.imago-una, div.imago-una-alta {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
div.imago-una img, div.imago-una-alta img {
  border-radius: 16px;
  box-shadow: 2px 2px 2px rgba(0,0,0,0.2);
}
div.imago-una img {
  width: 100%;
  max-width: 580px;
  height: auto;
}
div.imago-una-alta img {
  max-height: 450px;
  width: auto;
}

/* Pinacotheca in qua tabulae continentur */
div.pinacotheca {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}
@media (max-width: 800px) { div.pinacotheca { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { div.pinacotheca { grid-template-columns: 1fr; } }

div.pinacotheca .tabula {
  border: 1px solid black;
  border-radius: 8px;
  box-shadow: 2px 2px 2px rgba(0,0,0,0.2);
  background: white;
  overflow: hidden;
}

div.pinacotheca img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
}

div.pinacotheca .titulus {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100px;
  overflow: hidden;
  padding: 8px;
  font-size: 14px;
  text-align: center;
}

blockquote {
  margin-left: 32px;
  font-style: italic;
}

.retrorsus {
  text-decoration: none;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid black;
  display: inline-block;
  font-size: 14px;
  color: black;
}

div.tres-columnae {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
@media (max-width: 800px) {
  div.tres-columnae {
    display: block;
  }
}

.video-embed {
  width: 100%;
  max-width: 560px;
  margin: 24px auto;
  aspect-ratio: 16 / 9;
}

.video-embed.ratio-4-3 {
  aspect-ratio: 4 / 3;
}

.video-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.craticula-indicis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 800px) {
  .craticula-indicis {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 600px) {
  .craticula-indicis {
    grid-template-columns: 1fr;
  }
}

.craticula-indicis a {
  border: 1px solid black;
  border-radius: 8px;
  padding: 8px;
  display: flex;
  flex-direction: row;
  align-items: center;
  text-decoration: none;
  margin-right: 16px;
  background: white;
  box-shadow: 2px 2px 2px rgba(0,0,0,0.2);
}

.craticula-indicis a div {
}

.craticula-indicis a img {
  width: 48px;
  height: 48px;
  margin-right: 8px;
}

#sessio-proxima {
  background: #ffffe0;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 8px;
  text-align: center;
}