/* --- Variabel CSS: Hitam & Putih Modern --- */
:root {
  --bg-primary: rgba(
    248,
    248,
    248,
    0.95
  ); /* Hampir putih, sedikit transparan untuk efek glassmorphism */
  --bg-secondary: rgba(
    235,
    235,
    235,
    0.85
  ); /* Abu-abu terang untuk bagian/kartu */
  --bg-card-hover: rgba(
    220,
    220,
    220,
    0.98
  ); /* Sedikit lebih gelap saat hover */
  --text-main: #1a1a1a; /* Abu-abu sangat gelap, hampir hitam */
  --text-secondary: #555555; /* Abu-abu sedang untuk teks sekunder */
  --accent-primary: #000000; /* Hitam murni untuk aksen kuat */
  --accent-secondary: #888888; /* Abu-abu kalem untuk aksen halus */
  --shadow-soft: 0 8px 25px rgba(0, 0, 0, 0.07); /* Bayangan menyebar, terang */
  --glow-subtle: 0 0 15px rgba(0, 0, 0, 0.1); /* Cahaya hitam lembut */
  --glow-text-subtle: 0 0 3px rgba(0, 0, 0, 0.03); /* Cahaya teks sangat halus */
  --border-radius-base: 14px; /* Sudut membulat modern */
  --transition-duration: 0.4s; /* Kecepatan transisi terpadu */
  --border-light: 1px solid rgba(0, 0, 0, 0.05); /* Garis tepi sangat halus */
}

/* --- Gaya Dasar --- */
html {
  scroll-behavior: smooth; /* Perilaku scroll halus */
}

body {
  font-family: "Inter", sans-serif; /* Font bersih, modern */
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  color: var(--text-main);
  background-color: transparent; /* Ditangani oleh kanvas */
  line-height: 1.6;
  overflow-x: hidden; /* Mencegah scroll horizontal */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Kanvas untuk animasi latar belakang */
#modernCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
}

/* --- Tata Letak & Komponen Global --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  text-align: unset;
}

.section {
  padding: 60px 30px;
  position: relative;
  overflow: hidden;
  margin: 80px auto; /* Jarak antar bagian */
  /* background-color: var(--bg-secondary);
  border-radius: var(--border-radius-base);
  border: var(--border-light);
  box-shadow: var(--shadow-soft); */
  opacity: 0; /* Untuk animasi bertahap */
  transform: translateY(25px); /* Untuk animasi bertahap */
  transition: opacity var(--transition-duration) ease-out,
    transform var(--transition-duration) ease-out;
  /* box-shadow var(--transition-duration) ease,
    border-color var(--transition-duration) ease; */
  /* backdrop-filter: blur(6px); Efek glassmorphism
  -webkit-backdrop-filter: blur(6px); */
}

.section.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.section:hover {
  transform: translateY(-7px); /* Angkatan lembut saat hover */
  /* box-shadow: var(--glow-subtle); Cahaya lembut saat hover */
  /* border-color: var(--accent-secondary); Perubahan border halus */
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  text-align: center;
  color: var(--text-main);
  position: relative;
  display: inline-block;
  margin-bottom: 40px;
  opacity: 0; /* Untuk animasi pop-up */
  transform: translateY(30px); /* Untuk animasi pop-up */
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
  text-shadow: var(--glow-text-subtle);
}

.section-title.animate {
  opacity: 1;
  transform: translateY(0);
}

.section-title::after {
  content: "";
  display: block;
  width: 70px;
  height: 4px;
  background-color: var(--accent-primary);
  margin: 15px auto 0;
  border-radius: 2px;
  transition: width var(--transition-duration) ease,
    background-color var(--transition-duration) ease;
}

.section:hover .section-title::after {
  width: 100%;
  background-color: var(--accent-secondary);
}

/* --- HEADER --- */
header {
  background-color: var(--bg-primary);
  color: var(--text-main);
  padding: 18px 0;
  box-shadow: var(--shadow-soft);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: top var(--transition-duration) ease-in-out,
    background-color var(--transition-duration) ease,
    backdrop-filter var(--transition-duration) ease,
    box-shadow var(--transition-duration) ease,
    opacity var(--transition-duration) ease-out,
    transform var(--transition-duration) ease-out;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: var(--border-light);
  opacity: 0; /* Mulai dengan tidak terlihat */
  transform: translateY(-20px); /* Mulai sedikit di atas */
}
header.loaded {
  opacity: 1;
  transform: translateY(0);
}

header.scrolled {
  background-color: rgba(248, 248, 248, 0.98);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--accent-primary);
}

header.hidden {
  top: -120px; /* Sembunyikan sepenuhnya */
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent-primary);
  text-shadow: var(--glow-subtle);
  letter-spacing: -0.5px;
  opacity: 0; /* Mulai dengan tidak terlihat */
  transform: translateX(-20px); /* Mulai sedikit ke kiri */
  transition: opacity var(--transition-duration) ease-out,
    transform var(--transition-duration) ease-out;
}
.logo.loaded {
  opacity: 1;
  transform: translateX(0);
}

.nav-links {
  display: flex;
  gap: 35px;
  opacity: 0; /* Mulai dengan tidak terlihat */
  transform: translateX(20px); /* Mulai sedikit ke kanan */
  transition: opacity var(--transition-duration) ease-out,
    transform var(--transition-duration) ease-out;
}
.nav-links.loaded {
  opacity: 1;
  transform: translateX(0);
}

.nav-links a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 500;
  transition: color var(--transition-duration) ease,
    transform var(--transition-duration) ease,
    text-shadow var(--transition-duration) ease;
  position: relative;
  padding: 5px 0;
  letter-spacing: 0.5px;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-secondary);
  transition: width var(--transition-duration) ease,
    background-color var(--transition-duration) ease;
}

.nav-links a:hover {
  color: var(--accent-secondary);
  text-shadow: var(--glow-text-subtle);
  transform: translateY(-2px);
}

.nav-links a:hover::after {
  width: 100%;
  background-color: var(--accent-primary);
}

/* Menu Hamburger */
.hamburger-menu {
  display: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 28px;
  z-index: 1001;
}

.hamburger-menu .bar {
  width: 100%;
  height: 3px;
  background-color: var(--text-main);
  border-radius: 5px;
  transition: all 0.3s ease;
}

.hamburger-menu.active .bar:nth-child(1) {
  transform: translateY(12px) rotate(45deg);
}
.hamburger-menu.active .bar:nth-child(2) {
  opacity: 0;
}
.hamburger-menu.active .bar:nth-child(3) {
  transform: translateY(-12px) rotate(-45deg);
}

/* --- Bagian UTAMA / HERO --- */
.main {
  margin-top: 140px; /* Jarak dari header */
  padding: 60px 30px;
  text-align: right;
  flex: 1;
  flex-direction: column;
}

.main h1 {
  font-size: clamp(3rem, 7vw, 4rem);
  font-weight: 800;
  margin-bottom: 45px;
  color: var(--text-main);
  position: left;
  z-index: 1;
  min-height: 7rem; /* Memastikan ruang untuk efek pengetikan */
  white-space: nowrap;
  overflow: hidden;
  display: inline-block;
  text-shadow: var(--glow-subtle);
}

.main p {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.main button {
  margin-top: 60px;
  padding: 16px 32px;
  background-color: transparent;
  color: var(--text-main);
  border: 2px solid var(--accent-primary);
  border-radius: 30px;
  box-shadow: var(--glow-subtle);
  transition: background-color var(--transition-duration) ease,
    box-shadow var(--transition-duration) ease,
    transform var(--transition-duration) ease;
  animation: pulse-glow 2s infinite ease-in-out;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.8px;
  cursor: pointer;
  outline: none;
}

.main button:hover {
  box-shadow: var(--glow-subtle), 0 0 25px rgba(0, 0, 0, 0.15);
  background-color: rgba(0, 0, 0, 0.03);
  transform: translateY(-4px);
}

/* Keyframe untuk animasi cahaya berdenyut */
@keyframes pulse-glow {
  0% {
    box-shadow: var(--glow-subtle);
  }
  50% {
    box-shadow: var(--glow-subtle), 0 0 20px rgba(0, 0, 0, 0.08);
  }
  100% {
    box-shadow: var(--glow-subtle);
  }
}

/* --- Bagian TENTANG --- */
.about-content {
  display: flex;
  align-items: center;
  gap: 70px;
  flex-wrap: wrap;
}

.about-text {
  flex: 2;
  min-width: 300px;
}

.about-text h3 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  margin-bottom: 10px;
  color: var(--text-main);
  position: relative;
  text-shadow: var(--glow-text-subtle);
}

.about-text h3::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--accent-primary);
  margin-top: 10px;
  border-radius: 2px;
}

.about-text p {
  margin-bottom: 20px;
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  text-align: justify;
}

.about-img {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 250px;
}

.about-img img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-base);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-duration) ease,
    box-shadow var(--transition-duration) ease;
  border: var(--border-light);
}

.about-img img:hover {
  transform: scale(1.02) rotate(0.5deg);
  box-shadow: var(--glow-subtle);
}

/* --- Bagian KARYA --- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 45px;
}

.work-item {
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-base);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border: var(--border-light);
  opacity: 0;
  transform: translateY(25px);
  transition: opacity var(--transition-duration) ease-out,
    transform var(--transition-duration) ease-out,
    box-shadow var(--transition-duration) ease,
    background-color var(--transition-duration) ease,
    border-color var(--transition-duration) ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.work-item.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.work-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--glow-subtle);
  background-color: var(--bg-card-hover);
  border-color: var(--accent-secondary);
}

.work-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.work-item:hover .work-img {
  transform: scale(1.04);
}

.work-info {
  padding: 30px;
  display: flex;
  flex-direction: column;
}

.work-info h3 {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--accent-primary);
  text-shadow: var(--glow-text-subtle);
  margin-bottom: 5px;
}

.work-info h4 {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 15px;
}

.work-info p {
  font-size: 1rem;
  color: var(--text-main);
  text-align: justify;
  margin-bottom: 20px;
}

.work-info footer {
  position: relative;
  text-align: left;
  font-size: 0.9rem;
  font-weight: bold;
  margin-top: auto; /* Mendorong footer ke bawah */
  padding-left: 50px;
  color: var(--text-secondary);
  background-color: transparent;
}

.work-info footer:hover {
  background-color: transparent;
  box-shadow: none;
  border-top-color: transparent;
}

/* --- Bagian KETERAMPILAN --- */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 35px;
}

.skill-card {
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-base);
  border: var(--border-light);
  box-shadow: var(--shadow-soft);
  padding: 35px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(25px);
  transition: opacity var(--transition-duration) ease-out,
    transform var(--transition-duration) ease-out,
    box-shadow var(--transition-duration) ease,
    background-color var(--transition-duration) ease,
    border-color var(--transition-duration) ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.skill-card.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.skill-card:hover {
  transform: translateY(-12px) rotate(1deg);
  box-shadow: var(--glow-subtle);
  background-color: var(--bg-card-hover);
  border-color: var(--accent-primary);
}

.skill-icon {
  font-size: 4rem;
  color: var(--accent-primary);
  margin-bottom: 20px;
  transition: transform var(--transition-duration) ease,
    color var(--transition-duration) ease,
    text-shadow var(--transition-duration) ease;
  text-shadow: var(--glow-subtle);
}

.skill-card:hover .skill-icon {
  transform: scale(1.1);
  color: var(--accent-secondary);
  text-shadow: none; /* Hapus cahaya saat hover untuk tampilan yang lebih bersih */
}

.skill-card h3 {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}

.skill-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --- FOOTER --- */
footer {
  background-color: var(--bg-primary);
  color: var(--text-main);
  padding: 30px 0;
  display: block;
  text-align: center;
  border-top: var(--border-light);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  /* Tambahkan transisi untuk efek hover yang mulus */
  transition: background-color var(--transition-duration) ease,
    box-shadow var(--transition-duration) ease,
    border-color var(--transition-duration) ease;
}

/* Efek hover untuk footer */
footer:hover {
  background-color: var(--bg-card-hover); /* Warna latar belakang saat hover */
  box-shadow: var(--glow-subtle); /* Bayangan lembut saat hover */
  border-top-color: var(--accent-secondary); /* Warna border atas saat hover */
}

.social-links {
  padding-top: 20px;
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 20px;
}

.social-links a {
  color: var(--text-main);
  text-decoration: none;
  font-size: 1.8rem;
  transition: color var(--transition-duration) ease,
    transform var(--transition-duration) ease,
    text-shadow var(--transition-duration) ease;
  opacity: 0; /* Mulai dengan tidak terlihat */
  transform: translateY(10px); /* Mulai sedikit di bawah */
}
.social-links a.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.social-links a:hover {
  color: var(--accent-primary);
  text-shadow: var(--glow-text-subtle);
  transform: translateY(-6px) scale(1.1);
}

footer p {
  font-size: 0.9rem;
  padding-top: 10px;
  color: var(--text-secondary);
}

/* --- Tombol Kembali ke Atas --- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 2.2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: var(--glow-subtle);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px); /* Mulai sedikit tersembunyi */
  transition: opacity var(--transition-duration) ease-in-out,
    visibility var(--transition-duration) ease-in-out,
    transform var(--transition-duration) ease,
    background var(--transition-duration) ease,
    box-shadow var(--transition-duration) ease;
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-8px);
  background: linear-gradient(
    135deg,
    var(--accent-secondary),
    var(--accent-primary)
  );
  box-shadow: var(--glow-subtle), 0 0 20px rgba(0, 0, 0, 0.1);
}

/* --- Desain Responsif --- */
@media (max-width: 992px) {
  .section {
    padding: 50px 25px;
    margin: 60px auto;
  }
  .section-title {
    font-size: clamp(2.2rem, 4.5vw, 3rem);
  }
  .main {
    margin-top: 120px;
    padding: 50px 25px;
  }
  .main h1 {
    font-size: clamp(3rem, 6vw, 4rem);
    min-height: 6rem;
  }
  .main p {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
  }
  .about-content {
    gap: 50px;
  }
  .about-text h3 {
    font-size: clamp(1.8rem, 2.5vw, 2.2rem);
  }
  .about-text p {
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  }
  .work-grid {
    gap: 35px;
  }
  .work-img {
    height: 220px;
  }
  .skills-container {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
  }
  .skill-card {
    padding: 30px;
  }
  .skill-icon {
    font-size: 3.5rem;
  }
  .skill-card h3 {
    font-size: 1.4rem;
  }
  .back-to-top {
    bottom: 25px;
    right: 25px;
    width: 55px;
    height: 55px;
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .hamburger-menu {
    display: flex;
  }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 75px; /* Disesuaikan untuk tinggi header */
    left: 0;
    width: 100%;
    background-color: var(--bg-primary);
    padding: 20px 0;
    box-shadow: var(--shadow-soft);
    text-align: center;
    border-top: var(--border-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links a {
    padding: 15px 0;
    width: 100%;
    font-size: 1.05rem;
  }
  .main {
    margin-top: 100px;
    padding: 40px 20px;
  }
  .main h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    min-height: 5rem;
  }
  .main p {
    font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  }
  .section {
    padding: 40px 20px;
    margin-top: 80px;
  }
  .section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 30px;
  }
  .about-content {
    flex-direction: column;
    gap: 30px;
  }
  .about-img img {
    max-width: 80%;
  }
  .work-grid {
    grid-template-columns: 1fr;
  }
  .skills-container {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 25px;
  }
  .skill-card {
    padding: 25px;
  }
  .social-links {
    gap: 30px;
  }
  .social-links a {
    font-size: 1.6rem;
  }
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 1.2rem;
  }
  .main {
    max-width: 100%;
    margin-top: 90px;
    padding: 30px 15px;
  }
  .main h1 {
    font-size: clamp(2.2rem, 4.5vw, 3rem);
    min-height: 4.5rem;
  }
  .main p {
    font-size: 0.9rem;
  }
  .section {
    max-width: 100%;
    padding: 30px 15px;
  }
  .section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.2rem);
  }
  .work-info h3 {
    font-size: 1.6rem;
  }
  .work-info h4 {
    font-size: 1rem;
  }
  .work-info p {
    font-size: 0.9rem;
  }
  .skill-icon {
    font-size: 3rem;
  }
  .skill-card h3 {
    font-size: 1.2rem;
  }
  .social-links {
    gap: 20px;
  }
  .social-links a {
    font-size: 1.4rem;
  }
  .back-to-top {
    bottom: 15px;
    right: 15px;
    width: 45px;
    height: 45px;
    font-size: 1.6rem;
  }
}

.section p {
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.section p.fade-in {
  opacity: 1;
  transform: translateY(0);
}