/* INTRO SECTION
–––––––––––––––––––––––––––––––––––––––––––––––––– */
:root {
  --color_cuadro1: #d1d4fa;
  --color_cuadro2: #5b8bf4;
  --color_cuadro3: #055bf9;
  --color_cuadro4: #33538f;
}
.intro {
    background: #f0f0f0;
    padding: 100px 0;
  }
  
  .container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  
  /* TIMELINE
  –––––––––––––––––––––––––––––––––––––––––––––––––– */
  
  .timeline ul {
    background: var(--color_cuadro2);
    padding: 50px 0;
  }
  
  .timeline ul li {
    list-style-type: none;
    position: relative;
    width: 5px;
    margin: 0 auto;
    padding-top: 50px;
    background: #fff;
    box-shadow: 0 4px 4px rgb(80, 80, 80);
  }
  
  .timeline ul li::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 9px;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: inherit;
    z-index: 1;
    box-shadow: 0 4px 4px rgb(80, 80, 80);
  }
  
  .timeline ul li div {
    position: relative;
    bottom: 0;
    width: 400px;
    padding: 15px;
    background: var(--color_cuadro1);
    border-radius: 10px;
    box-shadow: 0 4px 4px rgb(80, 80, 80);
  }
  
  .timeline ul li div::before {
    content: "";
    position: absolute;
    bottom: 17px;
    width: 0;
    height: 0;
    border-style: solid;
  }
  
  .timeline ul li:nth-child(odd) div {
    left: 45px;
  }
  
  .timeline ul li:nth-child(odd) div::before {
    left: -15px;
    border-width: 8px 16px 8px 0;
    border-color: transparent var(--color_cuadro1) transparent transparent;
  }
  
  .timeline ul li:nth-child(even) div {
    left: -439px;
  }
  
  .timeline ul li:nth-child(even) div::before {
    right: -15px;
    border-width: 8px 0 8px 16px;
    border-color: transparent transparent transparent var(--color_cuadro1);
  }
  
  time {
    display: block;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 8px;
  }
  
  
  /* EFFECTS
  –––––––––––––––––––––––––––––––––––––––––––––––––– */
  
  .timeline ul li::after {
    transition: background 0.5s ease-in-out;
  }
  
  .timeline ul li.in-view::after {
    background: var(--color_cuadro4);
  }
  
  .timeline ul li div {
    visibility: hidden;
    opacity: 0;
    transition: all 0.5s ease-in-out;
  }
  
  .timeline ul li:nth-child(odd) div {
    transform: translate3d(200px, 0, 0);
  }
  
  .timeline ul li:nth-child(even) div {
    transform: translate3d(-200px, 0, 0);
  }
  
  .timeline ul li.in-view div {
    transform: none;
    visibility: visible;
    opacity: 1;
  }
  
  
  /* GENERAL MEDIA QUERIES
  –––––––––––––––––––––––––––––––––––––––––––––––––– */
  @media screen and (min-width: 900px) {
    .timeline ul li div {
      width: 250px;
    }
    .timeline ul li:nth-child(even) div {
      left: -289px;
      /*250+45-6*/
    }
  }
  @media screen and (max-width: 900px) {
    .timeline ul li div {
      width: 250px;
    }
    .timeline ul li:nth-child(even) div {
      left: -289px;
      /*250+45-6*/
    }
  }
  
  @media screen and (max-width: 600px) {
    .timeline ul li {
      margin-left: 20px;
    }
    .timeline ul li div {
      width: calc(100vw - 91px);
    }
    .timeline ul li:nth-child(even) div {
      left: 45px;
    }
    .timeline ul li:nth-child(even) div::before {
      left: -15px;
      border-width: 8px 16px 8px 0;
      border-color: transparent var(--color_cuadro1) transparent transparent;
    }
  }
  
  
  /* EXTRA/CLIP PATH STYLES
  –––––––––––––––––––––––––––––––––––––––––––––––––– */
  .timeline-clippy ul li::after {
    width: 40px;
    height: 40px;
    border-radius: 0;
  }
  
  .timeline-rhombus ul li::after {
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  }
  
  .timeline-rhombus ul li div::before {
    bottom: 12px;
  }
  
  .timeline-star ul li::after {
    clip-path: polygon(
      50% 0%,
      61% 35%,
      98% 35%,
      68% 57%,
      79% 91%,
      50% 70%,
      21% 91%,
      32% 57%,
      2% 35%,
      39% 35%
    );
  }
  
  .timeline-heptagon ul li::after {
    clip-path: polygon(
      50% 0%,
      90% 20%,
      100% 60%,
      75% 100%,
      25% 100%,
      0% 60%,
      10% 20%
    );
  }
  
  .timeline-infinite ul li::after {
    animation: scaleAnimation 2s infinite;
  }
  
  @keyframes scaleAnimation {
    0% {
      transform: translateX(-50%) scale(1);
    }
    50% {
      transform: translateX(-50%) scale(1.25);
    }
    100% {
      transform: translateX(-50%) scale(1);
    }
  }
  
  
  /* FOOTER STYLES
  –––––––––––––––––––––––––––––––––––––––––––––––––– */
  .page-footer {
    position: fixed;
    right: 0;
    bottom: 20px;
    display: flex;
    align-items: center;
    padding: 5px;
    color: black;
    background: rgba(255, 255, 255, 0.65);
  }
  
  .page-footer a {
    display: flex;
    margin-left: 4px;
  }