:root {
  --bg-main: #060913;
  --bg-card: rgba(11, 17, 32, 0.95);
  --bg-card-hover: rgba(17, 26, 48, 0.98);
  
  --primary-blue: #1d4ed8;
  --accent-cyan: #06b6d4;
  --accent-gold: #f59e0b;
  
  --text-primary: #f8fafc;
  --text-muted: #94a3b8;
  --border-light: rgba(255, 255, 255, 0.08);
  --border-active: rgba(6, 182, 212, 0.45);
  
  --radius: 16px;
  --transition: 0.3s ease;
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  letter-spacing: -0.5px;
}

.gold-text {
  color: var(--accent-gold);
}

/* CURSOR SPOTLIGHT */
.cursor-spotlight {
  position: fixed;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: -1;
}

#bgCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
}

/* NAVBAR */
.header-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(6, 9, 19, 0.92);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--border-light);
}

nav {
  max-width: 1300px;
  margin: 0 auto;
  padding: 14px 6%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.logo {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-decoration: none;
  color: var(--text-primary);
  z-index: 1002;
}

.logo span {
  color: var(--accent-gold);
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links ul {
  display: flex;
  gap: 20px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  text-decoration: none;
  font-size: 0.84rem;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 2px;
}

.mobile-nav-cta {
  display: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1002;
}

.nav-cta-desktop {
  padding: 8px 16px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 8px;
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.nav-cta-desktop:hover {
  background: var(--accent-cyan);
  color: #060913;
}

/* HAMBURGER */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 1003;
}

.hamburger .bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px auto;
  transition: var(--transition);
  border-radius: 2px;
}

.hamburger.active .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active .bar:nth-child(2) {
  opacity: 0;
}
.hamburger.active .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* HERO SECTION */
.hero {
  min-height: 90vh;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 130px 6% 60px;
  gap: 40px;
  max-width: 1300px;
  margin: 0 auto;
}

.hero-content {
  max-width: 620px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 30px;
  font-size: 0.8rem;
  color: #34d399;
  font-weight: 600;
  margin-bottom: 20px;
}

.status-dot {
  width: 7px;
  height: 7px;
  background-color: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 12px;
}

.typing-text {
  color: var(--accent-cyan);
}

.hero-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 25px;
}

/* BUTTONS */
.btn-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 25px;
}

.btn-primary, .btn-gold, .btn-outline {
  padding: 11px 22px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--primary-blue);
  color: #fff;
  box-shadow: 0 4px 15px rgba(29, 78, 216, 0.3);
}

.btn-primary:hover {
  background: #1e40af;
  transform: translateY(-2px);
}

.btn-gold {
  background: var(--accent-gold);
  color: #060913;
}

.btn-gold:hover {
  background: #d97706;
  color: #fff;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-outline:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
}

/* HERO TECH PILLS & BRAND ICONS (DIKUSTOMISASI & DISEMPURNAKAN) */
.hero-tech-pills {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: #94a3b8;
}

.hero-tech-pills span {
  font-weight: 600;
  color: #cbd5e1;
}

.hero-tech-pills i, 
.hero-tech-pills img {
  font-size: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  vertical-align: middle;
}

.hero-tech-pills i:hover, 
.hero-tech-pills img:hover {
  transform: scale(1.15);
}

.excel-brand-icon {
  width: 1.25rem;
  height: 1.25rem;
  filter: invert(36%) sepia(85%) saturate(452%) hue-rotate(117deg) brightness(94%) contrast(92%);
  object-fit: contain;
}

.brand-svg-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  fill: currentColor;
  object-fit: contain;
}

/* HERO AVATAR */
.hero-avatar {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-container {
  position: relative;
  width: 270px;
  height: 270px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px dashed rgba(6, 182, 212, 0.3);
  animation: rotateRing 20s linear infinite;
}

@keyframes rotateRing {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.avatar-frame-circle {
  width: 215px;
  height: 215px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
  box-shadow: 0 10px 30px rgba(6, 182, 212, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-frame-circle img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--bg-main);
}

.default-icon {
  font-size: 4.5rem;
  color: var(--accent-cyan);
  display: none;
}

.floating-badge {
  position: absolute;
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--accent-cyan);
}

.badge-1 { top: 5px; left: 10px; }
.badge-2 { bottom: 15px; left: 0px; }
.badge-3 { top: 30px; right: 5px; }

/* SECTIONS */
section {
  padding: 90px 6%;
  scroll-margin-top: 75px;
  max-width: 1300px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 6px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
}

/* REVEAL SYSTEM */
.reveal, .reveal-left, .reveal-right {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

.reveal-left { transform: translateX(-30px); }
.reveal-right { transform: translateX(30px); }

.reveal.active, .reveal-left.active, .reveal-right.active {
  opacity: 1;
  transform: translate(0, 0);
}

/* ABOUT SECTION */
.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 25px;
}

.about-card, .about-side-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.about-card h3 {
  font-size: 1.25rem;
  margin-bottom: 14px;
}

.about-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 15px;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.highlight-item{
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.7;
}

.highlight-item i{
    margin-top: 4px;
    flex-shrink: 0;
}

.highlight-item strong{
    display: inline-block;
    width: 180px;      /* Samakan lebar semua judul */
    font-weight: 700;
    flex-shrink: 0;
}

.highlight-item span{
    flex: 1;
    font-weight: 500;
}

.highlight-item i {
  color: var(--accent-gold);
}

.about-side-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
}

.side-box {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.side-box i {
  font-size: 1.3rem;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
  padding: 10px;
  border-radius: 10px;
}

.side-box h4 {
  font-size: 0.95rem;
  margin-bottom: 3px;
}

.side-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* SKILLS */
.skills-category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.skill-cat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}

.skill-cat-card:hover {
  border-color: var(--border-active);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.skill-cat-icon {
  font-size: 2rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.skill-cat-card h3 {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skill-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-list li i {
  color: var(--accent-gold);
  font-size: 0.75rem;
}

/* SERVICES */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 26px;
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--border-active);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.service-icon {
  font-size: 2rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.service-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* CERTIFICATES */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
}

.cert-card:hover {
  border-color: var(--border-active);
  transform: translateY(-3px);
}

.cert-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.cert-badge {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.cert-status {
  font-size: 0.72rem;
  color: #10b981;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.cert-issuer {
  font-size: 0.78rem;
  color: var(--accent-cyan);
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}

.cert-body h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.cert-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.cert-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 15px;
}

/* PROJECT FILTERS & GRID */
.project-filters {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 35px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent-cyan);
  color: #060913;
  border-color: var(--accent-cyan);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.project-card:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
}

.project-img {
  height: 140px;
  background: rgba(255, 255, 255, 0.02);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--accent-cyan);
  border-bottom: 1px solid var(--border-light);
}

.project-info {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-info h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.project-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 15px;
  flex-grow: 1;
}

.tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  border-radius: 6px;
}

/* CONTACT SECTION */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 35px;
}

.contact-info h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.contact-info p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 20px;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
}

.contact-detail i {
  color: var(--accent-cyan);
  font-size: 1.1rem;
  margin-top: 2px;
}

.contact-detail strong {
  font-size: 0.86rem;
  display: block;
}

.contact-detail p {
  font-size: 0.82rem;
  margin: 0 0 6px 0;
}

.copy-email-btn {
  padding: 4px 10px;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.copy-email-btn:hover {
  background: var(--accent-cyan);
  color: #060913;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%;
  padding: 11px 14px;
  background: rgba(6, 9, 19, 0.85);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  color: #fff;
  font-family: inherit;
  font-size: 0.88rem;
  outline: none;
}

.contact-form select option {
  background: #060913;
  color: #fff;
}

.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  border-color: var(--accent-cyan);
}

.form-status {
  font-size: 0.82rem;
  margin-top: 4px;
  font-weight: 600;
  text-align: center;
}

/* MARQUEE */
.tech-marquee-container {
  width: 100%;
  overflow: hidden;
  background: rgba(11, 17, 32, 0.7);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 18px 0;
  margin-top: 40px;
  display: flex;
  white-space: nowrap;
}

.marquee-track {
  display: flex;
  gap: 40px;
  animation: marqueeScroll 25s linear infinite;
  will-change: transform;
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

@keyframes marqueeScroll {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-50%, 0, 0); }
}

.icon-python { color: #3776ab; }
.icon-sql { color: #10b981; }
.icon-excel { color: #217346; }
.icon-cyan { color: var(--accent-cyan); }
.icon-gold { color: var(--accent-gold); }

/* FOOTER SOCIAL ICONS */
.socials {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.social-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1.2rem;
  transition: var(--transition);
}

.social-icon .brand-svg-icon {
  fill: #f8fafc;
  width: 1.25rem;
  height: 1.25rem;
  transition: fill 0.3s ease;
}

.whatsapp-brand:hover {
  background: #25d366;
  color: #fff;
  border-color: #25d366;
  box-shadow: 0 0 15px rgba(37, 211, 102, 0.4);
}

.linkedin-brand:hover {
  background: #0a66c2;
  color: #fff;
  border-color: #0a66c2;
  box-shadow: 0 0 15px rgba(10, 102, 194, 0.4);
}

.github-brand:hover {
  background: #24292e;
  color: #fff;
  border-color: #ffffff;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.instagram-brand:hover {
  background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
  color: #fff;
  border-color: #d6249f;
  box-shadow: 0 0 15px rgba(214, 36, 159, 0.4);
}

.email-brand:hover {
  background: var(--accent-gold);
  color: #060913;
  border-color: var(--accent-gold);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.4);
}

/* MODAL LIGHTBOX */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  padding-top: 60px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(6, 9, 19, 0.92);
  backdrop-filter: blur(10px);
}

.modal-content {
  margin: auto;
  display: block;
  max-width: 80%;
  max-height: 75vh;
  border-radius: var(--radius);
  border: 1px solid var(--border-active);
}

#modalCaption {
  margin: 15px auto;
  text-align: center;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
}

.close-modal {
  position: absolute;
  top: 25px;
  right: 35px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
}

.close-modal:hover {
  color: var(--accent-cyan);
}

/* TOAST NOTIFICATION */
.toast {
  visibility: hidden;
  min-width: 250px;
  background-color: var(--bg-card);
  color: #fff;
  border: 1px solid var(--accent-cyan);
  text-align: center;
  border-radius: 8px;
  padding: 12px;
  position: fixed;
  z-index: 3000;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  transition: opacity 0.3s ease;
  opacity: 0;
}

.toast.show {
  visibility: visible;
  opacity: 1;
}

/* FOOTER */
footer {
  padding: 40px 6% 25px;
  background: #03050a;
  border-top: 1px solid var(--border-light);
  text-align: center;
}

.footer-content {
  max-width: 500px;
  margin: 0 auto 25px;
}

.footer-content p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 10px 0 20px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 15px;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {
  .hero {
    flex-direction: column-reverse;
    text-align: center;
    padding-top: 110px;
    gap: 30px;
  }
  .btn-group, .hero-tech-pills { justify-content: center; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-container { grid-template-columns: 1fr; padding: 25px; }
  .nav-cta-desktop { display: none; }
  .hamburger { display: block; }

  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: 0;
    background: rgba(6, 9, 19, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    overflow: hidden;
    transition: height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 15px 30px rgba(0,0,0,0.5);
  }

  .nav-links.active {
    height: calc(100vh - 60px);
    padding: 30px 20px;
  }

  .nav-links ul {
    flex-direction: column;
    gap: 20px;
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    font-size: 1.1rem;
  }

  .mobile-nav-cta {
    display: block;
    width: 100%;
    margin-top: 30px;
  }
}

@media (max-width: 480px) {
  .btn-group { flex-direction: column; width: 100%; }
  .btn-primary, .btn-gold, .btn-outline { width: 100%; justify-content: center; }
  .about-card, .about-side-card, .contact-container { padding: 20px; }
  .avatar-container { width: 220px; height: 220px; }
  .avatar-frame-circle { width: 175px; height: 175px; }
}
/* Styling untuk Thumbnail / Jendela Kecil Gambar Sertifikat di Kartu */
.cert-card {
  overflow: hidden; /* Memastikan sudut gambar mengikuti bentuk border kartu */
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.cert-img {
  width: 100%;
  height: 180px; /* Atur tinggi pratinjau sesuai selera */
  overflow: hidden;
  position: relative;
  background-color: #1a1a1a;
}

.cert-img img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Agar gambar memenuhi kotak tanpa gepeng */
  object-position: top;
  transition: transform 0.4s ease;
}

.cert-card:hover .cert-img img {
  transform: scale(1.05); /* Efek zoom halus saat kartu disorot mouse */
}