/* =========================
   Covers
========================= */

.covers{
  position: relative;
  width: 100vw;
  height: 60vh;
  min-height: 400px;
  margin: 50px 0;
  padding: 0;
  overflow: hidden;

  display: flex;
  align-items: center;
  justify-content: center;

  background-color: #fafafa;
  background-image: url("img/powerboat_enclosure.jpg");
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;

  font-family: 'Poppins', sans-serif;
}

.covers::before{
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,.18), rgba(0,0,0,.30));
  z-index: 0;
  opacity: 0;
  transition: opacity .7s ease;
}

.covers_link{
  text-decoration: none;
  color: inherit;
  display: block;
  width: 100%;
  height: 100%;
}

.section_covers{
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  padding: 20vh 35vw;
  background-color: rgba(0, 0, 0, 0.2);

  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;

  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity .65s ease,
    transform .65s ease,
    background-color .35s ease;
}

.section_covers:hover{
  background-color: rgba(0, 0, 0, 0.3);
}

.section_covers:hover .covers_button{
  transform: translateY(3px);
}

.img-title-sailing-content{
  position: relative;
  z-index: 1;
  width: clamp(140px, 18vw, 240px);
  margin: 0 auto 1rem;

  opacity: 0;
  transform: translate3d(0, 12px, 0);
  transition:
    transform .45s ease,
    opacity .45s ease;
}

.img-title-sailing-content img{
  display: block;
  width: 100%;
  height: auto;
  margin-inline: auto;
}

.covers h1{
  position: relative;
  z-index: 1;
  font-size: clamp(3rem, 4.5vw, 6rem);
  line-height: 1.1;
  font-weight: 600;
  margin: .5rem 0 1.5rem 0;
  letter-spacing: -0.02em;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  text-transform: none;
  color: white;
  text-align: center;
  text-shadow: 1px 1px 0 black;

  opacity: 0;
  transform: translateY(22px);
  transition:
    transform .75s ease,
    opacity .75s ease;
}

.covers h1::after{
  content: "";
  display: block;
  width: clamp(110px, 12vw, 170px);
  height: 3px;
  margin: 18px auto 0;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,.35) 18%,
    rgba(255,255,255,1) 50%,
    rgba(255,255,255,.35) 82%,
    transparent 100%
  );
  box-shadow:
    0 0 10px rgba(255,255,255,.35),
    0 0 18px rgba(255,255,255,.18);

  opacity: 0;
  transform: scaleX(.2);
  transform-origin: center;
  transition:
    transform .95s ease,
    opacity .95s ease;
}

.covers_button{
  position: relative;
  z-index: 1;
  min-width: 120px;
  padding: 10px 14px;
  box-sizing: border-box;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  text-align: center;
  cursor: pointer;

  box-shadow: var(--btn_shadow, 0 10px 24px rgba(0,0,0,.18));
  background-color: #005598;

  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity .55s ease,
    transform .55s ease,
    background-color .35s ease;
}

.covers_button:hover{
  background: rgb(32,46,82);
  transform: translateY(-2px);
}

.covers_button h3{
  margin: 0;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  font-weight: 300;
  line-height: 1.2;
  color: #fff;
}

/* =========================
   Visible state on scroll
========================= */

.covers.is-visible::before{
  opacity: 1;
}

.covers.is-visible .section_covers{
  opacity: 1;
  transform: translateY(0);
}

.covers.is-visible .img-title-sailing-content{
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition-delay: .08s;
}

.covers.is-visible h1{
  opacity: 1;
  transform: translateY(0);
  transition-delay: .30s;
}

.covers.is-visible h1::after{
  opacity: 1;
  transform: scaleX(1);
  transition-delay: .55s;
}

.covers.is-visible .covers_button{
  opacity: 1;
  transform: translateY(0);
  transition-delay: .70s;
}

@media (max-width: 900px){
  .section_covers{
    padding: 18vh 18vw;
  }
}

@media (max-width: 640px){
  .covers{
    height: auto;
    min-height: 360px;
    background-attachment: scroll;
  }

  .section_covers{
    padding: 4.5rem 1.5rem;
  }

  .img-title-sailing-content{
    width: clamp(130px, 42vw, 210px);
  }

  .covers_button{
    min-width: 110px;
  }
}

@media (prefers-reduced-motion: reduce){
  .covers::before,
  .section_covers,
  .img-title-sailing-content,
  .covers h1,
  .covers h1::after,
  .covers_button{
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}