:root {
  --space-dark: #0a0a1a;
  --space-light: #1d1d3b;
  --text-light: #e0e0ff;
  --text-gray: #a0a0c0;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --font-heading: "Orbitron", sans-serif;
  --font-body: "Poppins", sans-serif;
  --galaxy-gradient: linear-gradient(
    45deg,
    var(--accent-blue),
    var(--accent-purple),
    var(--accent-pink)
  );
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}
html {
  scroll-padding-top: 80px;
}
body {
  background-color: var(--space-dark);
  color: var(--text-light);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}
.stars-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  z-index: -2;
}
.stars-bg:before {
  content: "";
  position: absolute;
  width: 1px;
  height: 1px;
  background: #fff;
  box-shadow: 50vw 20vh #fff, 10vw 80vh 1px #fff, 80vw 30vh #fff,
    30vw 50vh 1px #fff, 90vw 90vh #fff, 15vw 10vh 1px #fff, 70vw 60vh 1px #fff;
  animation: twinkle 5s infinite alternate;
}
@keyframes twinkle {
  0% {
    opacity: 0.5;
  }
  to {
    opacity: 1;
  }
}
.container {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding: 6rem 2rem;
}
h2 {
  font-family: var(--font-heading);
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  background: var(--galaxy-gradient);
  background-clip: text; /* standar (untuk browser modern) */
  -webkit-background-clip: text; /* untuk Safari & Chrome lama */
  -webkit-text-fill-color: transparent;
}
header {
  position: fixed;
  width: 100%;
  padding: 1.5rem 2rem;
  z-index: 1000;
  transition: all 0.3s ease;
}
header.scrolled {
  background: #0a0a1acc;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
nav .logo {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-light);
}
nav ul {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}
nav ul li a {
  text-decoration: none;
  color: var(--text-gray);
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  padding-bottom: 5px;
}
nav ul li a:hover,
nav ul li a.active {
  color: var(--text-light);
}
nav ul li a:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--galaxy-gradient);
  transition: width 0.3s ease;
}
nav ul li a:hover:after,
nav ul li a.active:after {
  width: 100%;
}
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
  padding: 0 5%;
}
.hero-text {
  grid-column: 1 / 2;
  padding-right: 2rem;
}
.hero-text h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 1.2;
  background: var(--galaxy-gradient);
  background-clip: text; /* standar (untuk browser modern) */
  -webkit-background-clip: text; /* untuk Safari & Chrome lama */
  -webkit-text-fill-color: transparent;
}
.no-wrap {
  white-space: nowrap;
}
.hero-text .subtitle {
  font-size: 1.5rem;
  color: var(--text-gray);
  margin: 1rem 0 2rem;
}
#typing-text {
  color: var(--text-light);
  font-weight: 600;
}
.btn {
  display: inline-flex;
  align-items: center;
  background: var(--galaxy-gradient);
  color: #fff;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  border: none;
  transition: all 0.3s ease;
  background-size: 200% auto;
}
.btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px #0003;
  background-position: right center;
}
.btn i {
  margin-right: 8px;
}
.hero-image {
  grid-column: 2 / 3;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  padding: 20px;
}
.hero-image img {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border-radius: 20px;
  position: relative;
  z-index: 1;
  transition: transform 0.3s ease;
}
.hero-image:before,
.hero-image:after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 25px;
  z-index: 0;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.hero-image:before {
  background: var(--space-light);
  transform: translate(-10px, 10px);
  box-shadow: 0 10px 30px #0006;
}
.hero-image:after {
  background: var(--galaxy-gradient);
  transform: translate(10px, -10px);
  box-shadow: 0 10px 50px #8b5cf680;
}
.hero-image:hover img {
  transform: scale(1.05) translateY(-5px);
}
.hero-image:hover:before {
  transform: translate(-20px, 20px) rotate(5deg);
  box-shadow: 0 15px 40px #0009;
}
.hero-image:hover:after {
  transform: translate(20px, -20px) rotate(-5deg);
  box-shadow: 0 15px 60px #8b5cf6b3;
}
.about-content {
  display: flex;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.profile-pic {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border-radius: 20px;
  border: 5px solid;
  border-image-slice: 1;
  border-image-source: var(--galaxy-gradient);
  box-shadow: 0 0 25px #8b5cf64d;
  transition: all 0.4s ease;
}
.profile-pic:hover {
  transform: scale(1.05) rotate(2deg);
  box-shadow: 0 0 40px #8b5cf699;
}
.about-content div {
  flex: 1;
  min-width: 300px;
}
.button-wrapper {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}
.service-card {
  background: var(--space-light);
  text-align: center;
  padding: 2.5rem;
  border-radius: 15px;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}
.service-card:hover {
  transform: translateY(-10px);
  border-image: var(--galaxy-gradient) 1;
  box-shadow: 0 0 30px #8b5cf666;
}
.service-card:hover i {
  transform: scale(1.1);
}
.service-card i {
  transition: transform 0.3s ease;
  font-size: 3rem;
  margin-bottom: 1rem;
  background: var(--galaxy-gradient);
  background-clip: text; /* standar (untuk browser modern) */
  -webkit-background-clip: text; /* untuk Safari & Chrome lama */
  -webkit-text-fill-color: transparent;
}
.service-card h3 {
  font-family: var(--font-heading);
  margin-bottom: 0.5rem;
}
#projects,
#tech-stack {
  margin-top: 4rem;
}
.filter-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}
.btn-filter {
  background: none;
  border: 1px solid var(--text-gray);
  color: var(--text-gray);
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.btn-filter.active,
.btn-filter:hover {
  background: var(--galaxy-gradient);
  background-size: 200% auto;
  color: #fff;
  border-color: transparent;
  box-shadow: 0 0 15px #8b5cf666;
}
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}
.project-card {
  background: var(--space-light);
  border-radius: 10px;
  overflow: hidden;
  transition: all 0.3s ease;
}
.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 0 20px #8b5cf64d;
}
.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}
.project-info {
  padding: 1.5rem;
}
.project-info h3 {
  font-size: 1.4rem;
  font-family: var(--font-heading);
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}
.tags span {
  background: #8b5cf633;
  color: #c4b5fd;
  padding: 0.25rem 0.75rem;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 600;
}
.btn-link {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 600;
  background: var(--galaxy-gradient);
  background-clip: text; /* standar (untuk browser modern) */
  -webkit-background-clip: text; /* untuk Safari & Chrome lama */
  -webkit-text-fill-color: transparent;
}
#tech-stack h2 i {
  background: var(--galaxy-gradient);
  background-clip: text; /* standar (untuk browser modern) */
  -webkit-background-clip: text; /* untuk Safari & Chrome lama */
  -webkit-text-fill-color: transparent;

  font-size: 2rem;
}
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}
.tech-item {
  background: var(--space-light);
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--space-light);
  transition: all 0.3s ease;
}
.tech-item:hover {
  transform: translateY(-5px);
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px #8b5cf64d;
}
.tech-item i {
  font-size: 1.5rem;
  color: var(--text-gray);
}
.tech-item span {
  font-weight: 500;
  color: var(--text-light);
}
.tech-item.python-hover:hover i {
  color: #3776ab;
}
.tech-item.php-hover:hover i {
  color: #777bb4;
}
.tech-item.laravel-hover:hover i {
  color: #ff2d20;
}
.tech-item.js-hover:hover i {
  color: #f7df1e;
}
.tech-item.dart-hover:hover i {
  color: #0175c2;
}
.tech-item.flutter-hover:hover i {
  color: #02569b;
}
.tech-item.java-hover:hover i {
  color: #007396;
}
.tech-item.mysql-hover:hover i {
  color: #4479a1;
}
.tech-item.postman-hover:hover i {
  color: #ff6c37;
}
.tech-item.figma-hover:hover i {
  color: #f24e1e;
}
.tech-item.canva-hover:hover i {
  color: #00c4cc;
}
.tech-item.bootstrap-hover:hover i {
  color: #7952b3;
}
.tech-item.html-hover:hover i {
  color: #e34f26;
}
.tech-item.css-hover:hover i {
  color: #1572b6;
}
.tech-item.nodejs-hover:hover i {
  color: #393;
}
.tech-item.mongodb-hover:hover i {
  color: #47a248;
}
.tech-item.pandas-hover:hover i {
  color: #130654;
}
.tech-item.matplotlib-hover:hover i {
  color: #8b5cf6;
}
.tech-item.spss-hover:hover i {
  color: #3b82f6;
}
.tech-item.spreadsheet-hover:hover i {
  color: #217346;
}
.tech-item.git-hover:hover i {
  color: #f05032;
}
.tech-item.github-hover:hover i {
  color: #fff;
}
.tech-item.react-hover:hover i {
  color: #61dafb;
}
.tech-item.tailwind-hover:hover i {
  color: #06b6d4;
}
.tech-item.vercel-hover:hover i {
  color: #fff;
}
.tech-item.docker-hover:hover i {
  color: #2496ed;
}
.tech-item.vscode-hover:hover i {
  color: #007acc;
}
.tech-item.npm-hover:hover i {
  color: #cb3837;
}
.tech-item.typescript-hover:hover i {
  color: #3178c6;
}
#contact {
  text-align: center;
}
#contact .contact-item {
  position: relative;
  background: var(--space-light);
  padding: 1rem;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.contact-links {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 2rem;
}
.contact-item {
  color: var(--text-gray);
  text-decoration: none;
  font-size: 2.5rem;
  transition: all 0.3s ease;
}
.contact-item:hover {
  transform: translateY(-5px);
}
.contact-item span {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translate(-50%);
  background: var(--galaxy-gradient);
  color: #fff;
  padding: 5px 15px;
  border-radius: 5px;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.contact-item span:after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--accent-pink) transparent transparent transparent;
}
.contact-item:hover span {
  visibility: visible;
  opacity: 1;
}
.contact-item.email-hover:hover i {
  color: #ea4335;
}
.contact-item.github-hover:hover i {
  color: #fff;
}
.contact-item.linkedin-hover:hover i {
  color: #0a66c2;
}
.contact-item.instagram-hover:hover i {
  color: #e4405f;
}
footer {
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--space-light);
}
.scroll-top-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--galaxy-gradient);
  color: #fff;
  border: none;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 100;
}
.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
}
@media (max-width: 992px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-image {
    display: none;
  }
}
@media (max-width: 768px) {
  .hero-text {
    text-align: center;
    padding-right: 0;
  }
  .about-content {
    justify-content: center;
  }
  .profile-pic {
    margin-bottom: 2rem;
  }
}