/* ------- CONCEPT -------- */

.concept {
  height: 100vh;
}
.concept .content {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
    /* background: url("../img/gra-bg.png") no-repeat center / cover; */
    z-index: -1;
  }
  .concept .content .tip {
    position: absolute;
    top: -85px;
    left: 0;
    width: 100%;
    overflow: hidden;
    z-index: 0;
  }
  .concept .content .tip p {
    font-size: 500px;
    font-weight: bold;
    font-family: "Outfit";
    color: rgba(255, 255, 255, 0.5);
    line-height: 1;
    white-space: nowrap;
    display: inline-block;
    animation: slideTextLeft 80s linear infinite;
    will-change: transform;
  }
  
  @keyframes slideTextLeft {
    0% {
      transform: translateX(0);
    }
    100% {
      transform: translateX(-50%);
    }
  }
  .concept .concept-slider {
    padding-block: 30px;
    position: relative;
    z-index: 2;
    overflow: hidden;
  }
  .concept-slider-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    width: fit-content;
    animation: slideLoop 120s linear infinite;
    animation-play-state: paused;
  }

  /* Start when scroll-animation section is active */
  .concept.active .concept-slider-wrap {
    animation-play-state: running;
  }

  /* Start when concept-sp section is visible */
  .concept-sp.visible .concept-slider-wrap {
    animation-play-state: running;
  }
  .concept-slider-wrap .concept-slide {
    width: 181px;
    flex-shrink: 0;
  }
  .concept-slider-wrap .concept-slide img {
    width: 100%;
    height: auto;
    display: block;
  }
  
  @keyframes slideLoop {
    0% {
      transform: translateX(-50%);
    }
    100% {
      transform: translateX(0);
    }
  }
  
  .concept-main {
    max-width: 1247px;
    margin: auto;
    margin-top: 44px;
    display: flex;
    align-items: start;
    position: relative;
    z-index: 2;
    padding-bottom: 45px;
  }
  .concept-main .txt {
    width: 100%;
    max-width: 758px;
  }
  .concept-main .txt-t {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .concept-main .txt-t p {
    font-size: 48px;
    font-weight: bold;
    line-height: 1.2;
    width: fit-content;
    position: relative;
    padding-inline: 9px;
  }
  .concept-main .txt-t p::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: #ffffff;
    transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s;
    z-index: 0;
  }
  .concept-main .txt-t p span {
    position: relative;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.6s ease-out;
  }
  .concept-main.animate .txt-t p::before {
    width: 100%;
  }
  .concept-main.animate .txt-t p:nth-child(1) span {
    opacity: 1;
    transition-delay: 0.6s;
  }
  .concept-main.animate .txt-t p:nth-child(2) span {
    opacity: 1;
    transition-delay: 0.8s;
  }
  .concept-main .txt-c {
    padding-block: 10px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  }
  .concept-main.animate .txt-c {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 1.2s;
  }
  .concept-main .txt-c p {
    font-size: 14px;
    line-height: 28px;
    color: #000000;
  }
  
  .concept-main .img {
    width: 100%;
    max-width: 400px;
    height: 350px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .concept-main .img img {
    position: absolute;
    opacity: 0;
    transform: translateY(-100px);
    transition: opacity 0.8s cubic-bezier(0.34, 1.56, 0.64, 1),
      transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  .concept-main .img .layerOne {
    bottom: 0px;
    transition-delay: 1.8s;
  }
  .concept-main .img .layerTwo {
    bottom: 50px;
    transition-delay: 2.0s;
  }
  .concept-main .img .layerThree {
    bottom: 100px;
    transition-delay: 2.2s;
  }
  .concept-main .img .layerFour {
    bottom: 150px;
    max-width: 340px;
    transition-delay: 2.4s;
  }
  .concept-main .img .layerFive {
    top: 10px;
    max-width: 140px;
    transition-delay: 2.6s;
  }
  .concept-main.animate .img img {
    opacity: 1;
    transform: translateY(0);
  }

@media (max-width: 1280px) {
  .concept-main {
    align-items: center;
    padding-inline: 50px;
  }
  .concept-main .txt {
    max-width: 100%;
  }
  .concept-main .img {
    width: 100%;
    max-width: 400px;
    height: 350px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .concept-main .img .layerTwo {
    bottom: 50px;
  }
  .concept-main .img .layerThree {
    bottom: 100px;
  }
  .concept-main .img .layerFour {
    bottom: 150px;
  }
  .concept-main .img .layerFive {
    top: 10px;
  }
  .concept-main .txt-c p {
    line-height: 24px;
  }
}

@media (max-width: 1024px) {
  .concept-main .txt-t p {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
   .concept-main {
    display: flex;
    flex-direction: column;
    padding-inline: 50px;
    }

  .concept-main .txt {
    order: 2;
  }
  .concept-main .txt-t p {
    font-size: 2rem;
  }

  .concept .content {
    height: auto;
  }

}

@media (max-width: 480px) {
    .concept-main .txt-t p {
        font-size: 1.5rem;
      }
    .concept-main {
        padding-inline: 20px;
    }
    .concept-main .img .layerTwo {
        bottom: 140px;
        transition-delay: 2.0s;
    }
    .concept-main .img .layerOne {
        bottom: 50px;
        transition-delay: 1.8s;
    }
    .concept-main .img .layerFour {
        bottom: 250px;
    }
    .concept-main .img {
      display: none;
    }
}

/* -------- CONCEPT-SP (smartphone only: same style/effect as CONCEPT-MAIN .img, no scroll animation) -------- */
.concept-sp {
  display: none;
}

@media (max-width: 768px) {
  .concept-sp {
    display: block;
    width: 100%;
    position: relative;
    overflow: hidden;
    height: 90vh;
  }
  .concept-sp .content-sp {
    width: 100%;
    height: 80vh;
    position: relative;
    padding-inline: 50px;
    padding-block: 30px 45px;
  }
  .concept-sp .concept-main-sp {
    height: 100%;
    max-width: 400px;
    margin: 0 auto;
  }
  .concept-sp .sp-img {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 150px;
  }
  .concept-sp .sp-img img {
    position: absolute;
    opacity: 1;
    transform: translateY(-100px);
    transition: opacity 0.8s cubic-bezier(0.34, 1.56, 0.64, 1),
      transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  .concept-sp .sp-img .layerOne {
    bottom: 0;
    transition-delay: 0.2s;
  }
  .concept-sp .sp-img .layerTwo {
    bottom: 50px;
    transition-delay: 2s;
  }
  .concept-sp .sp-img .layerThree {
    bottom: 200px;
    transition-delay: 2.2s;
  }
  .concept-sp .sp-img .layerFour {
    bottom: 150px;
    max-width: 340px;
    transition-delay: 2.4s;
  }
  .concept-sp .sp-img .layerFive {
    bottom: 300px;
    max-width: 140px;
    transition-delay: 2.6s;
  }
  .concept-sp .concept-main-sp.animate .sp-img img {
    opacity: 1;
    transform: translateY(0);
  }
  .is-hidden {
    display: none;
  }
  .concept-main {
    padding-top: 80px;
  }
}

@media (max-width: 480px) {
  .concept-sp .content-sp {
    padding-inline: 20px;
  }
  .concept-sp .sp-img .layerTwo {
    bottom: 120px;
    transition-delay: 2s;
  }
  .concept-sp .sp-img .layerOne {
    bottom: 50px;
    transition-delay: 1.8s;
  }
  .concept-sp .sp-img .layerFour {
    bottom: 250px;
  }
}