body {
  overflow-x: hidden;
}

@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;600;700&display=swap");

:root {
  --background: #ffffff;
}

* {
  font-family: "Manrope", sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.sec-1 {
  background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),
    /* overlay */ url("image/Gemini_Generated_Image_n0xcoln0xcoln0xc\ 1.svg"); /* background utama */
  color: white;
  background-size: cover;
  background-position: center;
  display: flex;
  justify-content: center;
  padding: 10rem 0rem 7rem 0rem;
  overflow: hidden;
}

.re_btn_auth {
  color: #2d4fe1;
  background-color: transparent;
  border-color: #2d4fe1;
  font-size: 15px;
  border-radius: 2px;
  line-height: 1.35135;
  font-weight: 600;
}

.re_btn_auth.btn-accent {
  color: #fff !important;
  background-color: #2d4fe1 !important;
  border-color: #2d4fe1 !important;
}

.navbar-custom {
  padding: 15px;
}

.container1 {
  width: 90%;
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: start;
}

.left {
  width: 60%;
}

.right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.right img {
  width: 100%;
}

.tagline {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 1rem;
}

.title {
  font-size: 63px;
  font-weight: 550;
  line-height: 0.9;
  margin-bottom: 2.5rem;
}

.ingfo {
  display: flex;
  gap: 2%;
  margin-bottom: 1.5rem;
}

.detail {
  /* From https://css.glass */
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(13.6px);
  -webkit-backdrop-filter: blur(13.6px);
  padding: 0.5rem 1.5rem;
  border-radius: 12px;
  font-size: 24px;
  font-weight: 600;
  color: #8dcaff;
  align-items: center;
}

.highlight {
  color: white;
}

.detail-event {
  /* From https://css.glass */
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(13.6px);
  -webkit-backdrop-filter: blur(13.6px);
  justify-content: space-between;
  padding: 1rem 2.5rem;
  width: 100%;
}

.detail-event span {
  font-size: 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
}

.register {
  background-color: #158bcf;
  color: white;
  padding: 0.8rem 5rem;
  border-radius: 3rem;
  font-weight: 600;
  font-size: 1.3rem;
  cursor: pointer;
  display: inline-block;
  border: none;
}

.register:hover {
  background-color: #0a1942;
}

/* section 2 */

.sec-2 {
  display: flex;
  justify-content: center;
  padding: 2rem 0;
  overflow: hidden;
}

.container2 {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-left: 0;
  margin-right: 0;
  gap: 5rem;
  width: 80%;
  max-width: 1440px;
  margin: 0 auto;
}

.left2 {
  flex: 50%;
  margin-top: 4rem;
}

.left2 h1 {
  font-size: 60px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  color: #0e2c77;
}

.left2 p {
  font-size: 1.3rem;
  line-height: 1.6;
  color: #0d1637;
  font-weight: 500;
  text-align: justify;
}

.highlight2 {
  font-weight: bold;
}

.right2 {
  flex: 40%;
  display: flex;
  align-items: center;
  height: 100%; /* take full height of .right2 */
}

.image {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.right2 img {
  width: 140%;
  max-width: 1000px;
}

/* section 3 */
.sec-3 {
  background-color: #0d1427;
  justify-content: center;
  padding: 2rem 6rem;
  overflow: hidden;
}

.container3 {
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  gap: 7rem;
}

.title3 {
  font-size: 67px;
  font-weight: 550;
  line-height: 0.9;
  margin-bottom: 2.5rem;
}

.title3 h1 {
  font-size: 70px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  color: #ffffff;
}

.title3 p {
  font-size: 21px;
  line-height: 1.6;
  color: #ffffff;
  font-weight: 500;
}

.imagecon {
  position: relative;
  width: 100%;
  max-width: 1480px;
  margin: auto;
  display: flex;
  align-items: start;
  justify-content: center;
  overflow: visible;
}

.swiper {
  width: 100%;
  height: auto;
  padding: 20px 0;
}

.swiper-slide {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: left;
  height: auto;
}

.pembicara {
  width: 333px;
  height: 406px;
  object-fit: cover;
  display: flex;
  flex-direction: column;
  justify-content: start;
  align-items: center;
  color: white;
}

.pembicara h1 {
  font-size: 32px;
  line-height: 1;
  margin-bottom: 1rem;
}

.buttonguwehkiri,
.buttonguwehkanan {
  position: absolute;
  padding: 15px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
}

.buttonguwehkiri {
  top: 12rem;
  left: -5rem;
}

.buttonguwehkanan {
  top: 12rem;
  right: -5rem;
}

.topic-section {
  width: 100%;
  padding: 4rem 0;
  background: #f4f4f4;
}

.topic-section__container {
  width: 85%;
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topic-img--mobile {
  justify-content: center;
  align-items: center;
  display: none;
}

.topic__right {
  img {
    width: 100%;
  }
}

.topic__left {
  width: 70%;
}

.join-section {
  background-color: #ffffff;
  padding: 4rem 0;
}

.join-section__container {
  position: relative;
  inset: 0;
  width: 80%;
  max-width: 1440px;
  margin: 0 auto;
}

.book-section {
  background: #1a202e;
}

.book-section__container {
  width: 85%;
  max-width: 1440px;
  margin: 0 auto;
  align-items: center;
  gap: 10%;
}

.topic-title {
  font-family: "Manrope", sans-serif;
  font-weight: 600;
  font-size: 3.5rem;
  color: #1c1b43;
  line-height: 0.93;
  margin-bottom: 2.8rem;
}

.topic-table {
  font-family: "Manrope", sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  background: #d9d9d9;
  color: #1f2654;
  line-height: 1.15;
  text-align: left;
}

.topic-list-title {
  font-family: "Manrope", sans-serif;
  font-size: 1.7rem;
  font-weight: 500;
  margin-top: 3rem;
  color: #1c1b43;
  line-height: 1.3;
}

.border-line {
  border-left: 4px solid #28a4df; /* adjust thickness & color */
  margin-top: 2rem;
  font-family: "Manrope", sans-serif;
  font-size: 1.2rem;
  color: #1c1b43;
  line-height: 1.2;
  font-weight: 500;
}

.subtext {
  font-family: "Manrope", sans-serif;
  font-weight: 500;
  color: #1c1b43;
  font-size: 1rem;
}

.join-title {
  color: #1f2654;
  font-family: "Manrope", sans-serif;
  font-size: 3.5rem;
  font-weight: 500;
  width: fit-content;
  padding-top: 9rem;
  margin-left: auto;
  margin-bottom: 9rem;
  line-height: 1.01;
}

.join-text {
  color: #1f2654;
  font-family: "Manrope", sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  max-width: 45%;
  margin-left: auto;
  text-align: justify;
  line-height: 1.3;
  margin-bottom: 9rem;
}

.join-pic__wrapper {
  width: 65%;
  position: absolute;
  top: 2%;
  left: 3%;
}

.join-pic {
  width: 100%;
}

.join-presents {
  font-family: "Manrope", sans-serif;
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 10rem;
}

.book-text {
  color: #f6f7ff;
  font-family: "Manrope", sans-serif;
}

.book-title {
  font-size: 4rem;
  line-height: 1;
  margin-bottom: 2.5rem;
}

.book-desc {
  font-size: 1.4rem;
  margin-bottom: 3rem;
  line-height: 1.2;
  padding: 0;
}

.book-button {
  color: #f6f7ff;
  background: #40abde;
  font-family: "Manrope", sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  padding-left: 4rem;
  padding-right: 4rem;
  border-radius: 10rem;
}

.book-vid {
  margin-right: 0rem;
}

.book-dec1 {
  position: absolute;
  width: 17%;
  height: auto;
  top: 15%;
  left: -7%;
}

.book-dec2 {
  position: absolute;
  width: 17%;
  height: auto;
  top: 80%;
  left: 87%;
}

/* -----responsive----- */
@media (max-width: 1281px) {
  .join-pic__wrapper {
    top: 8%;
    left: 0;
  }

  .book-text {
    margin: 0;
  }

  .book-vid {
    margin: 0;
  }
}

/* tablet */
@media (max-width: 1025px) {
  .sec-1 {
    padding: 5rem 0;
  }

  .container1 {
    flex-direction: column-reverse;
  }

  .left,
  .right {
    width: 100%;
  }

  .detail {
    flex-grow: 1;
  }

  .left2 {
    margin-left: 0;
  }

  .right2 {
    justify-content: center;
    margin: 0;

    .image {
      margin-left: 0;
    }
  }
  .container2 {
    flex-direction: column;
    align-items: center;
    gap: 3rem;
    padding: 0;
  }

  .left2 {
    margin-left: 0;
  }

  .right2 {
    justify-content: center;
    margin: 0;

    .image {
      margin-left: 0;
    }
  }

  .container3 {
    margin-left: 3rem;
    padding: 0rem 7rem 0rem 0rem;
  }

  .title3 {
    text-align: justify;
  }

  .swiper {
    padding: 20px 80px;
  }

  .buttonguwehkiri {
    left: -4rem;
    top: 10rem;
  }
  .buttonguwehkanan {
    right: -4rem;
    top: 10rem;
  }

  .container3 {
    margin-left: 3rem;
    padding: 0rem 7rem 0rem 0rem;
  }

  .title3 {
    text-align: justify;
  }

  .swiper {
    padding: 20px 80px;
  }

  .buttonguwehkiri {
    left: -4rem;
    top: 10rem;
  }
  .buttonguwehkanan {
    right: -4rem;
    top: 10rem;
  }

  .join-text {
    font-size: 1.25rem;
  }

  .join-pic__wrapper {
    top: 8%;
    left: 0;
  }

  .book-text {
    margin: 0;
  }

  .book-vid {
    margin: 0;
  }
}

/* tablet */
@media (max-width: 769px) {
  .sec-1 {
    padding: 6rem 2rem;
    text-align: center;
  }

  .sec-2 {
    padding: 2rem 0rem;
  }

  .container1 {
    flex-direction: column;
    text-align: center;
    gap: 0;
  }

  .container2 {
    flex-direction: column;
    gap: 3rem;
    padding: 0 2rem;
  }

  .title h1 {
    font-size: 40px;
  }

  .title {
    margin-bottom: 3rem;
  }

  .ingfo {
    gap: 1rem;
    padding-left: 14px;
    padding-right: 14px;
    justify-content: center;
  }

  .right {
    order: 1;
    justify-content: center;
    flex: 40%;
  }

  .left {
    order: 2;
    flex: 60%;
  }

  .left2 {
    padding-right: 4rem;
  }

  .left2 h1 {
    font-size: 36px;
    text-align: justify;
    margin-bottom: 1rem;
  }

  .left2 p {
    font-size: 1rem;
    text-align: justify;
  }

  .right2 img {
    width: 80%;
  }

  .container3 {
    margin-left: 2rem;
  }

  .title3 h1 {
    font-size: 40px;
  }

  .title3 p {
    font-size: 20px;
  }

  .imagecon {
    flex-direction: column;
  }

  .buttonguwehkiri,
  .buttonguwehkanan {
    width: 40px;
    height: 40px;
    left: 4;
    right: 1;
  }

  .swiper-slide {
    margin-left: 0.7rem;
  }
}

/* HP */
@media (max-width: 426px) {
  .sec-1,
  .sec-2,
  .sec-3 {
    overflow: hidden;
  }
  .title {
    font-size: 35px;
  }

  .tagline {
    font-size: 14px;
  }

  .ingfo {
    gap: 0.8rem;
    padding-left: 8px;
    padding-right: 8px;
    justify-content: center;
    flex-wrap: nowrap;
  }

  .detail {
    padding: 0.1rem 1rem;
    font-size: 16px;
    border-radius: 10px;
  }

  .highlight {
    font-size: 16px;
  }

  .detail-event {
    flex-wrap: nowrap;
    gap: 1rem;
    padding: 0.8rem 0.5rem;
    justify-content: space-between;
  }

  .detail-event span {
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    text-align: center;
    flex: 1;
    min-width: 0;
    line-height: 1.2;
  }

  .sec-2 {
    display: flex;
    justify-content: center;
    padding: 0rem 0rem;
  }

  .container2 {
    padding: 0;
    gap: 2rem;
  }

  .left2 {
    padding: 1rem;
  }

  .left2 h1 {
    font-size: 28px;
  }

  .left2 p {
    font-size: 15px;
  }

  .right2 .image img {
    width: 82%;
    max-width: 1000px;
    height: auto;
    object-fit: contain;
    align-items: center;
    margin-right: 2rem;
  }

  .sec-3 {
    padding: 2rem 4rem;
  }

  .container3 {
    margin-left: 0rem;
    padding: 1rem;
    text-align: left;
  }

  .title3 h1 {
    font-size: 32px;
  }

  .title3 p {
    font-size: 15px;
  }

  .pembicara {
    width: 100%;
    height: auto;
  }

  .pembicara img {
    width: 300px;
    height: 300px;
  }

  .pembicara h1 {
    font-size: 26px;
    margin-left: 1.5rem;
  }

  .pembicara p {
    font-size: 16px;
    margin-left: 1.5rem;
  }

  .buttonguwehkanan img,
  .buttonguwehkiri img {
    width: 500%;
    height: 500%;
  }

  .buttonguwehkiri {
    left: -2rem;
    top: 10rem;
  }
  .buttonguwehkanan {
    right: -2rem;
    top: 10rem;
  }

  .swiper-slide {
    flex-shrink: 0;
    width: 100% !important;
    margin: 0 auto;
    justify-content: center;
  }

  .swiper-wrapper {
    display: flex;
    align-items: center;
  }

  .topic-img--mobile {
    display: flex;
    margin-bottom: 2rem;
  }

  .topic__right {
    display: none;
  }

  .topic-section__container {
    width: 100%;
    justify-content: center;
  }

  .topic-table {
    font-size: 1rem;
  }

  .book-button {
    padding: 0.75rem 2.5rem !important;
  }
}

@media (max-width: 767px) {
  .topic-section {
    background: #f4f4f4;
    width: 100vw;
    padding-left: 0rem;
    overflow: hidden;
    padding-bottom: 1rem;
  }

  .topic-pic {
    padding-right: 0rem;
    padding-top: 1rem;
    width: 70%;
  }

  .topic-title {
    text-align: center;
    font-size: 2.5rem;
  }

  .topic-list-title {
    text-align: center;
    font-size: 1.6rem;
    margin-top: 3rem;
  }

  .border-line {
    border-left: 0;
    border-top: 4px solid #28a4df;
    font-size: 1rem;
    font-weight: 600;
    padding-left: 0;
  }

  .subtext {
    font-size: 0.8rem;
  }

  .join-title {
    text-align: center;
    display: flex;
    justify-content: center;
    padding-top: 0;
    margin-top: 3rem;
    margin-bottom: 3rem;
    margin-right: 0;
    margin-left: 0;
    max-width: 100%;
    width: 100%;
    font-size: 2.5rem;
  }

  .join-pic__wrapper {
    margin-left: auto;
    margin-right: auto;
    display: block;
    width: 90%;
    position: relative;
    left: 0;
    top: 0;
    padding-bottom: 3rem;
  }

  .join-text {
    font-size: 1.2rem;
    font-weight: 600;
    width: 90%;
    margin-right: auto;
    margin-left: auto;
    text-align: justify;
    line-height: 1.5;
    margin-bottom: 3rem;
    max-width: none;
  }

  .join-presents {
    margin-bottom: 4rem;
  }

  .book-vid {
    margin-right: auto;
    margin-left: auto;
  }

  .book-text {
    color: #f6f7ff;
    font-family: "Manrope", sans-serif;
    margin-left: 2rem;
  }

  .book-title {
    font-size: 2.5rem;
    line-height: 1;
    margin-bottom: 1.5rem;
  }

  .book-desc {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
  }

  .book-button {
    color: #f6f7ff;
    background: #40abde;
    font-family: "Manrope", sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    padding-left: 5rem;
    padding-right: 5rem;
    border-radius: 10rem;
    margin-left: auto;
    margin-right: auto;
  }
}