@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-decoration: none;
  border: none;
  outline: none;
  scroll-behavior: smooth;
  font-family: "Poppins", sans-serif;
}

:root {
  --bg-color: #1f242d;
  --second-bg-color: #323946;
  --text-color: #fff;
  --main-color: #0ef;
}

html {
  font-size: 63.5%;
  overflow-x: hidden;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
}

section {
  min-height: 100vh;
  padding: 10rem 9% 2rem;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 2rem 9%;
  background: var(--bg-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
}

.header.sticky {
  border-bottom: 0.1rem solid rgba(0, 0, 0, 0.2);
}

.logo {
  font-size: 2.5rem;
  color: var(--text-color);
  font-weight: 600;
  cursor: default;
}

.navbar a {
  font-size: 1.7rem;
  color: var(--text-color);
  margin-left: 4rem;
  transition: 0.3s;
}

.navbar a:hover,
.navbar a.active {
  color: var(--main-color);
}

#menu-icon {
  font-size: 3.6rem;
  color: var(--text-color);
  display: none;
}

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

.home-img img {
  width: 35vw;
  animation: floatImage 4s ease-in-out infinite;
}

@keyframes floatImage {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2.4rem);
  }
  100% {
    transform: translateY(0);
  }
}

.home-content h3 {
  font-size: 3.2rem;
  font-weight: 700;
}

.home-content h3:nth-of-type(2) {
  margin-bottom: 2rem;
}

span {
  color: var(--main-color);
}

.home-content h1 {
  font-size: 5.6rem;
  font-weight: 700;
  line-height: 1.3;
}

.home-content p {
  font-size: 1.6rem;
}

.social-media a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 4rem;
  height: 4rem;
  background: transparent;
  border: 0.2rem solid var(--main-color);
  border-radius: 50%;
  font-size: 2rem;
  color: var(--main-color);
  margin: 3rem 1.5rem 3rem;
  transition: 0.5s ease;
}

.social-media a:hover {
  background: var(--main-color);
  color: var(--second-bg-color);
  box-shadow: 0 0 1rem var(--main-color);
}

.btn {
  display: inline-block;
  padding: 1rem 2.8rem;
  background: var(--main-color);
  border-radius: 4rem;
  box-shadow: 0 0 1rem var(--main-color);
  font-size: 1.6rem;
  color: var(--second-bg-color);
  letter-spacing: 0.1rem;
  font-weight: 600;
  transition: 0.5s ease;
}

.btn:hover {
  box-shadow: none;
}

.about {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  background: var(--second-bg-color);
}

.about-img img {
  width: 35vw;
}

.heading {
  text-align: center;
  font-size: 4.5rem;
}

.about-content h2 {
  text-align: left;
  line-height: 1.2;
}

.about-content h3 {
  font-size: 2.6rem;
}

.about-content p {
  font-size: 1.6rem;
  margin: 2rem 0 3rem;
}

.services h2 {
  margin-bottom: 5rem;
}

.services-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.services-container .services-box {
  flex: 1 1 30rem;
  background: var(--second-bg-color);
  padding: 3rem 2rem 4rem;
  border-radius: 2rem;
  text-align: center;
  border: 0.2rem solid var(--bg-color);
  transition: 0.5s ease;
}

.services-container .services-box:hover {
  border-color: var(--main-color);
  transform: scale(1.02);
}

.services-box i {
  font-size: 7rem;
  color: var(--main-color);
}

.services-box h3 {
  font-size: 2.6rem;
}

.services-box p {
  font-size: 1.6rem;
  margin: 1rem 0 3rem;
}

.portofolio {
  background: var(--second-bg-color);
}

.portofolio h2 {
  margin-bottom: 4rem;
}

.portofolio-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  gap: 2.5rem;
}

.portofolio-container .portofolio-box {
  position: relative;
  border-radius: 2rem;
  box-shadow: 0 0 1rem var(--bg-color);
  overflow: hidden;
  display: flex;
}

.portofolio-box img {
  width: 100%;
  transition: 0.5s ease;
}

.portofolio-box:hover img {
  transform: scale(1.1);
}

.portofolio-box .portofolio-layer {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(0, 0, 0, 0.1), #00535d);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  padding: 0 4rem;
  transform: translateY(100%);
  transition: 0.5s ease;
}

.portofolio-box:hover .portofolio-layer {
  transform: translateY(0);
}

.portofolio-layer h4 {
  font-size: 3rem;
}

.portofolio-layer p {
  font-size: 1.6rem;
  margin: 0.3rem 0 1rem;
}

.portofolio-layer a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 5rem;
  height: 5rem;
  background: var(--text-color);
  border-radius: 50%;
}

.portofolio-layer a i {
  font-size: 2rem;
  color: var(--second-bg-color);
}

.contact h2 {
  margin-bottom: 3rem;
}

.contact form {
  max-width: 70rem;
  margin: 1rem auto;
  text-align: center;
  margin-bottom: 3rem;
}

.contact form .input-box {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.contact form .input-box input,
.contact form textarea {
  width: 100%;
  padding: 1.5rem;
  font-size: 1.6rem;
  color: var(--text-color);
  background: var(--second-bg-color);
  border-radius: 0.8rem;
  margin: 0.7rem 0;
}

.contact form .input-box input {
  width: 49%;
}

.contact form textarea {
  resize: none;
}

.contact form .btn {
  margin-top: 2rem;
  cursor: pointer;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  padding: 2rem 9%;
  background: var(--second-bg-color);
}

.footer text p {
  font-size: 1.6rem;
}

.footer-iconTop a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0.8rem;
  background: var(--main-color);
  border-radius: 0.8rem;
  transition: 0.5s ease;
}

.footer-iconTop a:hover {
  box-shadow: 0 0 1rem var(--main-color);
}

.footer-iconTop a i {
  font-size: 2.4rem;
  color: var(--second-bg-color);
}

/* --- Google Fonts --- */
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");

/* --- Variabel Warna Sesuai Request --- */
:root {
  --bg-color: #1f242d;
  --second-bg-color: #323946;
  --text-color: #fff;
  --main-color: #0ef;
  /* Variabel tambahan untuk mendukung kecocokan tema */
  --text-muted: #ababab;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  padding: 2rem 0;
}

/* --- Layout Container --- */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.education-section {
  padding: 60px 0;
}

.section-title {
  text-align: center;
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 10px;
}

/* Menggunakan --main-color untuk garis bawah judul */
.section-title span {
  color: var(--main-color);
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 60px;
}

/* --- Timeline Style --- */
/* Garis vertikal menggunakan warna background kedua agar terlihat halus */
.timeline {
  position: relative;
  border-left: 3px solid var(--second-bg-color);
  padding-left: 30px;
  margin-left: 20px;
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

/* Titik Indikator Timeline */
.timeline-dot {
  position: absolute;
  left: -41.5px; /* Pas di tengah garis border-left */
  top: 5px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--bg-color);
  border: 4px solid var(--main-color);
  box-shadow: 0 0 10px var(--main-color); /* Efek glow neon */
  transition: all 0.3s ease;
}

/* Efek hover pada item mengubah warna titik menjadi full neon */
.timeline-item:hover .timeline-dot {
  background-color: var(--main-color);
  box-shadow: 0 0 20px var(--main-color);
}

/* Kotak Tahun / Waktu */
.timeline-date {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--main-color);
  background-color: rgba(0, 238, 255, 0.1); /* Transparansi dari #0ef */
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 15px;
  border: 1px solid rgba(0, 238, 255, 0.2);
}

/* Kotak Konten (Menggunakan --second-bg-color) */
.timeline-content {
  background-color: var(--second-bg-color);
  padding: 25px;
  border-radius: 12px;
  border: 1px solid transparent;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition:
    transform 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

/* Efek Hover Kotak Konten */
.timeline-content:hover {
  transform: translateY(-5px);
  border-color: var(--main-color);
  box-shadow: 0 5px 15px rgba(0, 238, 255, 0.1);
}

.timeline-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 5px;
}

.timeline-content .degree {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(
    --main-color
  ); /* Mengubah nama jurusan/gelar menjadi warna utama */
  margin-bottom: 12px;
}

.timeline-content .description {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================================ */
/* 1. Pengaturan Container Utama (Rata Tengah untuk Desktop)    */
/* ============================================================ */
.social-buttons {
  display: grid;
  /* Mengatur kolom otomatis berjejer ke samping di desktop */
  grid-template-columns: repeat(auto-fit, minmax(60px, max-content));

  /* KUNCI RATA TENGAH */
  justify-content: center; /* Membuat seluruh grid berada di tengah halaman */
  justify-items: center; /* Membuat ikon berada di tengah kolomnya masing-masing */

  gap: 15px;
  margin-top: 20px;
  padding: 0;
  width: 100%; /* Memastikan container mengambil lebar penuh agar bisa ditengah */
}

/* ============================================================ */
/* 2. Pengaturan Desain Tombol Bulat (Universal)               */
/* ============================================================ */
.social-buttons a {
  text-decoration: none !important;
  outline: none;
}

.social-btn {
  display: flex !important;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #e0e0e0;
  color: #555555 !important;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.social-btn i {
  font-size: 1.8rem;
}

/* ============================================================ */
/* 3. Efek Hover (Universal)                                    */
/* ============================================================ */
.social-btn:hover {
  transform: translateY(-5px);
  color: #ffffff !important;
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

/* Warna SOSMED saat di-hover */
.whatsapp:hover {
  background-color: #25d366 !important;
}
.instagram:hover {
  background: linear-gradient(
    45deg,
    #f09433 0%,
    #e6683c 25%,
    #dc2743 50%,
    #cc2366 75%,
    #bc1888 100%
  ) !important;
}
.facebook:hover {
  background-color: #1877f2 !important;
}
.twitter:hover {
  background-color: #000000 !important;
}
.linkedin:hover {
  background-color: #0077b5 !important;
}

/* ============================================================ */
/* 4. KUNCI RESPONSIF MOBILE (Media Query)                      */
/* ============================================================ */
@media screen and (max-width: 480px) {
  .social-buttons {
    /* Tetap memaksa grid menjadi 2 kolom di mobile */
    grid-template-columns: repeat(2, max-content) !important;

    /* Memastikan posisi grid 2 kolom tetap berada di tengah layar HP */
    justify-content: center !important;
    justify-items: center !important;

    gap: 20px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* --- Responsive (Mobile) --- */
@media (max-width: 576px) {
  .timeline {
    margin-left: 10px;
    padding-left: 20px;
  }

  .timeline-dot {
    left: -31.5px;
  }

  .timeline-content {
    padding: 20px 15px;
  }
}

/* breakpoin */

@media (max-width: 1200px) {
  .header {
    font-size: 55%;
  }
}

@media (max-width: 991px) {
  .header {
    padding: 2rem 3%;
  }

  section {
    padding: 10rem 3% 2rem;
  }

  .services {
    padding-bottom: 7rem;
  }

  .portofolio {
    padding-bottom: 7rem;
  }

  .contact {
    min-height: auto;
  }

  .footer {
    padding: 2rem 3%;
  }
}

@media (max-width: 768px) {
  #menu-icon {
    display: block;
  }

  .navbar {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    padding: 1rem 3%;
    background-color: var(--bg-color);
    border-top: 0.1rem solid rgba(0, 0, 0, 0.2);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.2);
    display: none;
  }

  .navbar.active {
    display: block;
  }

  .navbar a {
    display: block;
    font-size: 2rem;
    margin: 3rem 0;
  }

  .home {
    flex-direction: column;
  }

  .home-content h3 {
    font-size: 2.6rem;
  }

  .home-content h1 {
    font-size: 5rem;
  }

  .home-img img {
    width: 70vw;
    margin-top: 4rem;
  }

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

  .about img {
    width: 70vw;
    margin-top: 4rem;
  }

  .services h2 {
    margin-bottom: 3rem;
  }

  .portofolio h2 {
    margin-bottom: 3rem;
  }

  .portofolio-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 617px) {
  .portofolio-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 450px) {
  html {
    font-size: 50%;
  }

  .contact form .input-box input {
    width: 100%;
  }
}

@media (max-width: 365px) {
  .home-img img {
    width: 90vw;
  }

  .about-img img {
    width: 90vm;
  }

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

  .footer p {
    text-align: center;
    margin-top: 2rem;
  }
}