/* Projects container */
.project {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  margin: 4em auto;
}

/* Project link */
.project-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 auto;
}

/* Project link covering entire content */
.project-link {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  text-decoration: none;
  color: transparent;
  background: transparent;
  cursor: none;
}

/* Timeline container */
.timeline {
  max-width: 80%; 
  margin: 0 auto;
  position: relative;
  padding-left: 4em;
  box-sizing: border-box;
}

/* Project content (default) */
.project div {
  position: relative;
  display: inline-block;
  padding: 2em;
  box-sizing: border-box;
  margin-top: 3em;
  width: 70%;
  max-width: 700px;
  border: 2px solid #999;
  border-radius: 10px;
  color: #999;
  overflow: hidden;
  transition: transform 1.5s border-color 0.5s ease, color 0.5s ease;
}

/* Project container (hover) */
.project div:hover {
  border-color: #333;
  transform: scale(1.005); 
}

/* Project container (focused) */
.project div.focused {
  color: #333;
  border-color: #333;
}

/* Vertical line (default) */
.project::before {
  content: '';
  position: absolute;
  top: 4em;
  left: 0;
  width: 1.5px;
  height: 125%;
  background-color: #999;
  transform: translateX(-50%);
  transition: background-color 0.5s ease;
  z-index: 0;
}

/* Vertical line (focused) */
.project.focused::before {
  background-color: #333;
}

/* Project-dot */
.project-dot {
  position: absolute;
  left: 0;
  top: 2.5em;
  width: 2em;
  height: 2em;
  background: #fff;
  border: 2px solid #999;
  border-radius: 50%;
  color: #999;
  font-size: 2em;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%) translateY(-50%);
  z-index: 1;
  transition: border-color 0.5s ease, color 0.5s ease;
}

/* Project-dot (active) */
.project-dot.visible {
  border-color: #333;
  color: #333;
}

/* Project image */
.project-image {
  max-width: 100%;
  flex-shrink: 0;
  height: auto;
  opacity: 0.2;
  transition: opacity 0.2s ease-in-out; 
}

/* Project image (focused) */
.project.focused .project-image {
  opacity: 1;
}

/* Project date line */
.project-date {
  font-size: 0.8em;
  color: #999;
  margin-top: -0.5em;
}

/* Project description */
.project-description {
  font-size: 1em;
  margin-top: 2em;
  color: #999;
}

/* Adaptations for Smaller Screens */
@media screen and (max-width: 768px) {
  .timeline {
      max-width: 90%;
      padding-left: 3em;
  }

  .project {
      margin: 3em auto;
  }

  .project div {
      width: 75%;
      padding: 1.5em;
  }

  .project-dot {
      width: 1.5em;
      height: 1.5em;
      font-size: 1.5em;
  }

  .project-date, .project-description {
      font-size: 0.9em;
  }
}