/* universal styles */
:root {
  --white: #ffffff;
  --light-red: #ff99bb;
  --light-orange: #ffcc66;
  --light-yellow: #ffff77;
  --light-green: #bbff88;
  --light-blue: #99ccff;
  --light-purple: #eebbff;
  --dark-gray: #777777;
  --black: #000000;
}
* {
  box-sizing: border-box;
  margin: 0;
  border: 0;
  padding: 0;
}
html, body {
  width: 100%;
  height: 100%;
}
html {
  overflow: hidden;
  font-family: Verdana, sans-serif;
  font-size: 16px;
}
body {
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-gutter: stable;
  background-color: var(--dark-gray);
  color: var(--white);
}
#page {
  min-height: 100vh;
  margin: 0 max(1rem, calc(1rem + (100vw - 36rem)*0.2));
  padding: 2rem 0;
  background-color: var(--black);
}
#title-group {
  display: flex;
  flex-direction: row;
  align-items: center;
  width: auto;
  max-width: 36rem;
  margin: 0 3rem 0.5rem 2rem;
  border: 0.3rem solid var(--white);
  border-radius: 0.9rem;
  padding: 0.9rem 1.2rem;
  cursor: pointer;
  user-select: none;
}
#title-group:hover {
  background-color: var(--dark-gray);
}
.logo {
  display: flex;
  align-items: center;
  justify-content: center;
}
#image-white {
  width: 4.5rem;
  height: 4.5rem;
}
h2 {
  margin: 0.6rem 0.9rem;
  font-size: 3rem;
}
h3 {
  margin: 0.4rem 0.6rem;
  font-size: 2rem;
}
h4 {
  margin: 0.3rem 0.45rem;
  font-size: min(1.5rem, calc(10vw/3));
}
#subtitle-group {
  display: flex;
  flex-direction: row;
  align-items: center;
  overflow: hidden;
  height: 0;
  margin: 0 2rem 0.5rem 3rem;
  transition: height 0.3s ease-out;
}
#subtitle-group.open {
  height: 7.2rem;
  transition: height 0.5s ease-in;
}
#channel-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 7.2rem;
  aspect-ratio: 1;
  border-radius: 0.45rem;
  padding: 0.45rem;
  font-size: 0.8rem;
  font-weight: bold;
  text-decoration: none;
}
#channel-link:hover {
  background-color: var(--dark-gray);
}
#youtube-logo {
  height: 3.6rem;
  margin: auto;
}
.collapsible[data-color="red"] {--section-color: var(--light-red);}
.collapsible[data-color="orange"] {--section-color: var(--light-orange);}
.collapsible[data-color="yellow"] {--section-color: var(--light-yellow);}
.collapsible[data-color="green"] {--section-color: var(--light-green);}
.collapsible[data-color="blue"] {--section-color: var(--light-blue);}
.collapsible[data-color="purple"] {--section-color: var(--light-purple);}
.collapsible {
  display: flex;
  flex-direction: row;
  align-items: center;
  width: auto;
  max-width: 36rem;
  margin: 2rem 3rem 0.5rem 2rem;
  border: 0.2rem solid var(--section-color);
  border-radius: 0.6rem;
  padding: 0.6rem 0.8rem;
  color: var(--section-color);
  cursor: pointer;
  user-select: none;
}
.collapsible:hover {
  background-color: var(--dark-gray);
}
#first-subheader {
  margin-top: 3rem;
}
.image {
  width: 3rem;
  height: 3rem;
}
.collapsible-content {
  overflow: hidden;
  margin: 0 2rem 0.5rem 3rem;
  transition: max-height 0.3s ease-out;
}
.collapsible-content.open {
  transition: max-height 0.5s ease-in;
}
.collapsible-content p {
  margin-top: 1.2rem;
}
.collapsible-content :first-child {
  margin-top: 0;
}
a:link {
  color: var(--light-blue);
}
a:visited {
  color: var(--light-purple);
}
a:hover {
  color: var(--light-red);
}
a:active {
  color: var(--light-green);
}
.video-container {
  position: relative;
  overflow: hidden;
  max-width: 48rem;
  aspect-ratio: 16 / 9;
  margin: 1.2rem 2rem 0;
  border: 0.1rem solid var(--white);
  border-radius: 0.3rem;
}
.video-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}
#interconnect-link {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  margin: 1.2rem 0 0 2rem;
  border-radius: 0.45rem;
  padding: 0.45rem;
  font-size: 1.2rem;
  font-weight: bold;
  text-decoration: none;
}
#interconnect-link:hover {
  background-color: var(--dark-gray);
}
#interconnect-image {
  width: 16rem;
  margin-bottom: 0.3rem;
  border-radius: 0.3rem;
}
#tipjar-link {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  margin: 1.2rem 0 0 2rem;
  border-radius: 0.45rem;
  padding: 0.45rem;
  font-size: 1.2rem;
  font-weight: bold;
  text-decoration: none;
}
#tipjar-link:hover {
  background-color: var(--dark-gray);
}
#kofi-logo {
  height: 1.8rem;
}
#tipjar-text {
  margin: 0.2rem 0.3rem;
}
footer {
  margin: 2rem 2rem 0 5rem;
  font-size: 0.8rem;
}

/* minimum conditions */
@media (max-width: 36rem), (max-height: 24rem) {
  html {
    font-size: min(calc(100vw / 36), calc(100vh / 24));
  }
}