:root {
  --primary-color: #50a2a2;
  --bg-color: #f5f5f0;
  --text-dark: black;
  --border-dark: #3e3f41;
  --accent-bg: #e8f0fe;
}

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

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;

  background-color: var(--bg-color, white);
  color: var(--text-dark);
  font-size: 1rem;
  line-height: 1.6em;
  padding: 2vh 3vw;
  margin: 0px;
  font-family: "Inter", sans-serif;
}

/* helpful button to send you back to the top */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--primary-color);
  color: white;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 100;
}

.back-to-top:hover {
  background-color: #3a7a7a;
}

/************************** MAIN SECTION **************************/
main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  max-width: 1200px;
  min-width: 300px;
  height: 100%;
}

h1,
h2 {
  color: var(--primary-color);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  margin-bottom: 15px;
}

h3 {
  color: hsla(20, 10%, 10%, 0.9);
}

.nav-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.nav-bar > h2 {
  color: color(display-p3 0.2 0.5 0.5);
  text-align: center;
  padding: 10px 0;
}

.note-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 20px;
}

.note-group {
  display: flex;
  flex-direction: column;
  justify-content: center;

  padding: 20px 25px 20px 25px;
  margin-top: 30px;
  margin-right: auto;
  margin-bottom: 30px;
  margin-left: auto;
  border: 2px solid var(--border-dark);
  background-color: rgba(250, 248, 240, 0.95);
  border-radius: 12px;
}

.note-group ul li {
  color: var(--text-dark);
  line-height: 1.8rem;
  padding-top: 5px;
  padding-bottom: 5px;
}

h3 ~ span {
  display: inline-block;
  background-color: var(--accent-bg);
  padding: 4px 8px;
  border-radius: 4px;
  font-style: italic;
}

h3 + span {
  display: inline-block;
  background-color: var(--accent-bg);
  padding: 4px 8px;
  border-radius: 4px;
}

[type="checkbox"] {
  margin: 5px auto;
  display: inline;
}

div.questions {
  margin: 20px 0 15px 0;
  padding: 12px;
  border-left: 4px solid;
  border-left-color: var(--primary-color);
  background-color: color-mix(in srgb, var(--primary-color) 30%, white 70%);
}

div.questions b {
  color: black;
}

#meeting-video {
  border-style: solid;
  border-color: var(--border-dark);
  border-width: 3px;
  border-radius: 8px;
  width: 600px;
  max-width: 90%;
  height: auto;
}

details {
  width: fit-content;
  max-width: 100%;
}

details ol {
  margin: 0;
  padding-left: 20px;
  padding-right: 5px;
}

details p {
  margin: 5px 0;
}

button:hover {
  background-color: var(--primary-color);
  color: white;
  cursor: pointer;
}

button:active {
  transform: scale(0.98);
}

.hidden-demo {
  display: none;
}

footer {
  display: block;
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  background-color: var(--accent-bg);
  border-radius: 8px;
}
/************************** FORM SECTION **************************/

/* doesn't style the actual form */
.about-me-form {
  width: 100%;
  background-color: var(--bg-color);
  padding: 20px;
  border-radius: 15px;

  & h2 {
    color: var(--primary-color);
    text-align: center;
    text-decoration: none;
  }

  & button {
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    display: block;
  }
}

.about-me-form form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

fieldset:has(h3) {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;

  border: 2px solid var(--border-dark);
  border-radius: 10px;
  margin: 7px 0;
  padding: 15px;
}

/************************** MEDIA QUERY/RESPONSIVENESS SECTION **************************/
@media (max-width: 768px) {
  body {
    padding: 2vh 2vw;
  }

  .note-table {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .nav-bar {
    flex-direction: row;
    flex-wrap: wrap;
  }

  video,
  img {
    max-width: 100%;
    height: auto;
  }

  /* fix video container */
  #meeting-video {
    width: 100%;
    max-width: 100%;
    height: auto;
  }

  img {
    width: 100%;
    height: auto;
  }

  details {
    width: 100%;
    max-width: 100%;
  }

  details ol {
    padding-left: 20px;
    word-wrap: break-word;
  }

  /* make form full width */
  .about-me-form {
    width: 100%;
    padding: 15px;
  }

  .about-me-form form {
    gap: 1rem;
  }

  fieldset {
    width: 100%;
  }

  /* prevent text overflow */
  p,
  li,
  span,
  div {
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  div.questions {
    padding: 10px;
  }
}
@media (max-width: 480px) {
  body {
    padding: 1vh 1.5vw;
    font-size: 0.9rem;
  }

  .note-group {
    padding: 15px;
    margin: 15px 0;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1rem;
  }

  .back-to-top {
    width: 35px;
    height: 35px;
    font-size: 1rem;
    bottom: 10px;
    right: 10px;
  }

  .about-me-form {
    padding: 10px;
  }

  fieldset {
    padding: 10px;
  }

  button {
    width: 100%;
  }

  .note-group {
    overflow-x: auto;
  }
}