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

  :root {
    --bg: #0a0a0a;
    --surface: #111111;
    --surface2: #1a1a1a;
    --border: #222222;
    --accent: #c8f542;
    --accent2: #7effb2;
    --text: #f0ede8;
    --muted: #666666;
    --muted2: #444444;
    --font-display: 'Syne', sans-serif;
    --font-body: 'DM Sans', sans-serif;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.6;
    overflow-x: hidden;
  }

  /* ── NOISE TEXTURE OVERLAY ── */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
  }

  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s, background 0.3s, backdrop-filter 0.3s;
  }

  nav.scrolled {
    border-color: var(--border);
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(16px);
  }

  .nav-logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
    color: var(--text);
    text-decoration: none;
  }

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

  .nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
  }

  .nav-links a {
    text-decoration: none;
    color: var(--muted);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color 0.2s;
  }

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

  .nav-cta {
    background: var(--accent);
    color: #0a0a0a !important;
    padding: 0.5rem 1.25rem;
    border-radius: 2px;
    font-weight: 500 !important;
    letter-spacing: 0.02em !important;
    text-transform: none !important;
    font-size: 0.85rem !important;
    transition: opacity 0.2s !important;
  }

  .nav-cta:hover {
    opacity: 0.85;
    color: #0a0a0a !important;
  }

  /* Hamburger */
  .nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
  }

  .nav-hamburger span {
    width: 24px;
    height: 1.5px;
    background: var(--text);
    display: block;
    transition: transform 0.3s, opacity 0.3s;
  }

  .nav-hamburger.open span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }

  .nav-hamburger.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-hamburger.open span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 99;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
  }

  .mobile-menu.open {
    display: flex;
  }

  .mobile-menu a {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    transition: color 0.2s;
  }

  .mobile-menu a:hover {
    color: var(--accent);
  }

  /* ── HERO ── */
  #hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 8rem 2.5rem 4rem;
    position: relative;
    overflow: hidden;
  }

  .hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(200, 245, 66, 0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(200, 245, 66, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
  }

  .hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200, 245, 66, 0.06) 0%, transparent 70%);
    top: 50%;
    left: 30%;
    transform: translate(-50%, -50%);
    pointer-events: none;
  }

  .hero-left {
    position: relative;
    z-index: 2;
    max-width: 600px;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 0.35rem 0.9rem;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.2s;
  }

  .hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s infinite;
  }

  .hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 800;
    line-height: 1.0;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.35s;
  }

  .hero-title .line2 {
    color: transparent;
    -webkit-text-stroke: 1px var(--muted2);
  }

  .hero-title .accent {
    color: var(--accent);
  }

  .hero-desc {
    font-size: 1.05rem;
    color: var(--muted);
    line-height: 1.7;
    max-width: 460px;
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.5s;
  }

  .hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.6s ease forwards 0.65s;
  }

  .btn-primary {
    background: var(--accent);
    color: #0a0a0a;
    padding: 0.85rem 2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.2s, opacity 0.2s;
    border-radius: 2px;
    letter-spacing: 0.01em;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    opacity: 0.9;
  }

  .btn-secondary {
    background: transparent;
    color: var(--text);
    padding: 0.85rem 2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 400;
    border: 1px solid var(--border);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: border-color 0.2s, transform 0.2s;
    border-radius: 2px;
  }

  .btn-secondary:hover {
    border-color: var(--muted);
    transform: translateY(-2px);
  }

  .hero-right {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    opacity: 0;
    animation: fadeLeft 0.8s ease forwards 0.4s;
  }

  .hero-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2rem;
    width: 320px;
    position: relative;
  }

  .hero-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 2rem;
    right: 2rem;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
  }

  .hero-card-title {
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 1.5rem;
  }

  .hero-stat {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
  }

  .hero-stat:last-child {
    border-bottom: none;
  }

  .hero-stat-label {
    font-size: 0.85rem;
    color: var(--muted);
  }

  .hero-stat-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
  }

  .hero-stat-sub {
    font-size: 0.7rem;
    color: var(--muted);
  }

  /* ── MARQUEE ── */
  .marquee-section {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    overflow: hidden;
    background: var(--surface);
  }

  .marquee-track {
    display: flex;
    gap: 3rem;
    animation: marquee 20s linear infinite;
    width: max-content;
  }

  .marquee-item {
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .marquee-item::after {
    content: '◆';
    color: var(--accent);
    font-size: 0.4rem;
  }

  /* ── SKILLS ── */
  #skills {
    padding: 8rem 2.5rem;
  }

  .section-label {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .section-label::before {
    content: '';
    width: 2rem;
    height: 1px;
    background: var(--accent);
  }

  .section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1rem;
  }

  .section-sub {
    color: var(--muted);
    max-width: 500px;
    font-size: 1rem;
    margin-bottom: 4rem;
  }

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  /* mobile */
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

/* desktop */
@media (min-width: 768px) {
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

  .skill-card {
    background: var(--bg);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    cursor: default;
    transition: background 0.3s;
  }

  .skill-card:hover {
    background: var(--surface);
  }

  .skill-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
  }

  .skill-card:hover::after {
    transform: scaleX(1);
  }

  .skill-icon {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    display: block;
  }

  .skill-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
  }

  .skill-desc {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
  }

  .skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .skill-tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 2px;
    color: var(--muted);
    letter-spacing: 0.04em;
    transition: border-color 0.2s, color 0.2s;
  }

  .skill-card:hover .skill-tag {
    border-color: rgba(200, 245, 66, 0.2);
    color: var(--text);
  }

  .skill-tag.highlight {
    border-color: rgba(200, 245, 66, 0.3);
    color: var(--accent);
    background: rgba(200, 245, 66, 0.05);
  }

  /* ── ABOUT ── */
  #about {
    padding: 8rem 2.5rem;
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
  }

  .about-left {
    position: relative;
  }

  .about-visual {
    position: relative;
    margin-top: 2rem;
  }

  .about-box {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 2.5rem;
    position: relative;
  }

  .about-box::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 1.5rem;
    right: 1.5rem;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent2), transparent);
  }

  .about-values {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .about-value {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
  }

  .about-value-icon {
    width: 32px;
    height: 32px;
    background: rgba(200, 245, 66, 0.08);
    border: 1px solid rgba(200, 245, 66, 0.2);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.9rem;
  }

  .about-value-text strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.15rem;
  }

  .about-value-text span {
    font-size: 0.8rem;
    color: var(--muted);
  }

  .about-text {
    font-size: 1rem;
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 1.5rem;
  }

  .about-text strong {
    color: var(--text);
    font-weight: 400;
  }

  .about-list {
    list-style: none;
    margin: 2rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .about-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--muted);
  }

  .about-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 1px;
    background: var(--accent);
    flex-shrink: 0;
    transform: rotate(45deg);
  }

  /* ── STACK ── */
  #stack {
    padding: 8rem 2.5rem;
    border-top: 1px solid var(--border);
  }

  .stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin-top: 3rem;
  }

  .stack-item {
    background: var(--bg);
    padding: 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: background 0.3s;
    cursor: default;
  }

  .stack-item:hover {
    background: var(--surface);
  }

  .stack-item-logo {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
  }

  .stack-item-name {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--muted);
    transition: color 0.3s;
    text-align: center;
  }

  .stack-item:hover .stack-item-name {
    color: var(--text);
  }

  .stack-item-level {
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted2);
  }

  .stack-item.expert .stack-item-level {
    color: var(--accent);
  }

  .stack-item.advanced .stack-item-level {
    color: var(--accent2);
  }

  /* ── CONTACT / CTA ── */
  #contact {
    padding: 8rem 2.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .cta-glow {
    position: absolute;
    width: 800px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(ellipse, rgba(200, 245, 66, 0.04) 0%, transparent 70%);
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
  }

  .cta-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    position: relative;
  }

  .cta-title .outline {
    color: transparent;
    -webkit-text-stroke: 1px var(--muted2);
  }

  .cta-sub {
    color: var(--muted);
    font-size: 1rem;
    max-width: 400px;
    margin: 0 auto 3rem;
    position: relative;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    position: relative;
  }

  /* ── FOOTER ── */
  footer {
    border-top: 1px solid var(--border);
    padding: 2rem 2.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .footer-logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 0.9rem;
  }

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

  .footer-copy {
    font-size: 0.8rem;
    color: var(--muted2);
  }

  .footer-links {
    display: flex;
    gap: 1.5rem;
  }

  .footer-links a {
    font-size: 0.8rem;
    color: var(--muted2);
    text-decoration: none;
    transition: color 0.2s;
  }

  .footer-links a:hover {
    color: var(--muted);
  }

  /* ── ANIMATIONS ── */
  @keyframes fadeUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  @keyframes fadeLeft {
    from {
      opacity: 0;
      transform: translateX(30px);
    }

    to {
      opacity: 1;
      transform: translateX(0);
    }
  }

  @keyframes pulse {

    0%,
    100% {
      opacity: 1;
    }

    50% {
      opacity: 0.4;
    }
  }

  @keyframes marquee {
    from {
      transform: translateX(0);
    }

    to {
      transform: translateX(-50%);
    }
  }

  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 900px) {
    #hero {
      grid-template-columns: 1fr;
      padding: 7rem 1.5rem 4rem;
    }

    .hero-right {
      display: none;
    }

    #about {
      grid-template-columns: 1fr;
      gap: 3rem;
      padding: 5rem 1.5rem;
    }

    nav {
      padding: 1.25rem 1.5rem;
    }

    .nav-links,
    .nav-cta {
      display: none;
    }

    .nav-hamburger {
      display: flex;
    }

    #skills,
    #stack,
    #contact {
      padding: 5rem 1.5rem;
    }

    footer {
      flex-direction: column;
      gap: 1rem;
      text-align: center;
    }
  }