:root {
    --bg: #0a0b0e;
    --bg2: #111318;
    --bg3: #181c24;
    --accent: #00e5c3;
    --accent2: #0077ff;
    --accent3: #7c3aed;
    --text: #e8eaf0;
    --muted: #6b7280;
    --border: rgba(255,255,255,0.07);
    --card: rgba(255,255,255,0.03);
    --glow: rgba(0,229,195,0.15);
    --radius: 16px;
    --radius-sm: 8px;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
  }

  /* SCROLLBAR */
  ::-webkit-scrollbar { width: 4px; }
  ::-webkit-scrollbar-track { background: var(--bg); }
  ::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 2px; }

  /* NAV */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 1.25rem 3rem;
    display: flex; align-items: center; justify-content: space-between;
    transition: background 0.4s, backdrop-filter 0.4s;
  }
  nav.scrolled {
    background: rgba(10,11,14,0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
  }
  .nav-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.03em;
  }
  .nav-logo span { color: var(--accent); }
  .nav-links {
    display: flex; gap: 2.5rem; list-style: none;
  }
  .nav-links a {
    font-family: 'DM Mono', monospace;
    font-size: 0.78rem;
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.25s;
    position: relative;
  }
  .nav-links a::after {
    content: '';
    position: absolute; bottom: -4px; left: 0; right: 100%;
    height: 1px; background: var(--accent);
    transition: right 0.3s ease;
  }
  .nav-links a:hover { color: var(--accent); }
  .nav-links a:hover::after { right: 0; }
  .nav-cta {
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.6rem 1.4rem;
    border: 1px solid var(--accent);
    color: var(--accent);
    background: transparent;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background 0.25s, color 0.25s;
  }
  .nav-cta:hover { background: var(--accent); color: var(--bg); }

  /* HERO */
  #hero {
    min-height: 70vh;
    display: flex; align-items: center; justify-content: center;
    padding: 8rem 3rem 4rem;
    position: relative;
    overflow: hidden;
  }
  .hero-grid-bg {
    position: absolute; inset: 0;
    background-image:
      linear-gradient(rgba(0,229,195,0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0,229,195,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 70% at 60% 40%, black 20%, transparent 80%);
  }
  .hero-glow {
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(0,229,195,0.08) 0%, transparent 70%);
    right: -100px; top: 50%;
    transform: translateY(-50%);
    animation: pulseGlow 4s ease-in-out infinite;
    pointer-events: none;
  }
  .hero-glow2 {
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(0,119,255,0.06) 0%, transparent 70%);
    left: -50px; bottom: -50px;
    pointer-events: none;
  }
  @keyframes pulseGlow {
    0%, 100% { opacity: 0.6; transform: translateY(-50%) scale(1); }
    50% { opacity: 1; transform: translateY(-50%) scale(1.08); }
  }
  .hero-content { position: relative; max-width: 900px; margin: 0 auto; text-align: center; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid rgba(0,229,195,0.25);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 2rem;
    background: rgba(0,229,195,0.05);
    opacity: 0;
    animation: fadeUp 0.8s 0.2s forwards;
  }
  .hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: blink 1.4s ease-in-out infinite;
  }
  @keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }
  h1 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: clamp(3rem, 7vw, 6rem);
    line-height: 1.0;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.9s 0.4s forwards;
  }
  h1 .line2 { color: var(--accent); font-weight: 700; display: inline; }
  h1 .outline {
    -webkit-text-stroke: 1.5px var(--muted);
    color: transparent;
    display: inline;
  }
  .hero-desc {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--muted);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    opacity: 0;
    animation: fadeUp 0.9s 0.6s forwards;
  }
  .hero-desc strong { color: var(--text); font-weight: 400; }
  .hero-actions {
    display: flex; gap: 1rem; align-items: center; justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.9s 0.8s forwards;
  }
  .btn-primary {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--accent);
    color: var(--bg);
    font-family: 'DM Mono', monospace;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.9rem 2rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,229,195,0.3);
  }
  .btn-outline {
    display: inline-flex; align-items: center; gap: 10px;
    border: 1px solid var(--border);
    color: var(--text);
    font-family: 'DM Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.9rem 2rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: border-color 0.25s, color 0.25s;
  }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent); }
  .hero-stats {
    display: flex; gap: 3rem; justify-content: center;
    margin-top: 4rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--border);
    opacity: 0;
    animation: fadeUp 0.9s 1.0s forwards;
  }
  .stat-num {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 2.2rem;
    color: var(--text);
    letter-spacing: -0.05em;
    line-height: 1;
  }
  .stat-num span { color: var(--accent); }
  .stat-label {
    font-size: 0.78rem;
    color: var(--muted);
    margin-top: 4px;
    letter-spacing: 0.02em;
  }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* SCROLL INDICATOR */
  .scroll-indicator {
    position: absolute;
    bottom: 2.5rem; left: 50%; transform: translateX(-50%);
    display: flex; align-items: center; gap: 12px;
    opacity: 0;
    animation: fadeIn 1s 1.5s forwards;
  }
  @keyframes fadeIn { to { opacity: 1; } }
  .scroll-line {
    width: 40px; height: 1px;
    background: var(--muted);
    position: relative;
    overflow: hidden;
  }
  .scroll-line::after {
    content: '';
    position: absolute;
    left: -100%; top: 0; width: 100%; height: 100%;
    background: var(--accent);
    animation: scanLine 2s ease-in-out infinite;
  }
  @keyframes scanLine {
    0% { left: -100%; } 50% { left: 0%; } 100% { left: 100%; }
  }
  .scroll-text {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  /* SECTIONS */
  section { padding: 6rem 3rem; }
  .section-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    display: flex; align-items: center; gap: 10px;
  }
  .section-label::after {
    content: '';
    flex: 1; max-width: 40px;
    height: 1px;
    background: var(--accent);
  }
  h2 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: clamp(2rem, 4vw, 3.2rem);
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: var(--text);
  }
  h2 em { font-style: normal; color: var(--accent); }

  /* ABOUT */
  #about { background: var(--bg2); }
  .about-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
  }
  .about-text p {
    color: var(--muted);
    line-height: 1.85;
    margin-bottom: 1.25rem;
    font-size: 0.97rem;
  }
  .about-text p strong { color: var(--text); font-weight: 500; }
  .about-visual {
    position: relative;
    display: flex; align-items: center; justify-content: center;
  }
  .code-block {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.82rem;
    line-height: 1.8;
    width: 100%;
    position: relative;
    overflow: hidden;
  }
  .code-block::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
  }
  .code-header {
    display: flex; align-items: center; gap: 8px;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .dot { width: 10px; height: 10px; border-radius: 50%; }
  .dot-red { background: #ff5f57; }
  .dot-yellow { background: #febc2e; }
  .dot-green { background: #28c840; }
  .code-filename {
    font-size: 0.72rem;
    color: var(--muted);
    margin-left: auto;
    letter-spacing: 0.05em;
  }
  .kw { color: #c792ea; }
  .fn { color: #82aaff; }
  .str { color: #c3e88d; }
  .cm { color: #546e7a; font-style: italic; }
  .pn { color: var(--accent); }
  .num { color: #f78c6c; }

  /* SKILLS */
  #skills { background: var(--bg); }
  .skills-inner { max-width: 1100px; margin: 0 auto; }
  .skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-top: 3.5rem;
  }
  .skill-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: border-color 0.3s, transform 0.25s, background 0.3s;
    position: relative;
    overflow: hidden;
  }
  .skill-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 0;
    background: linear-gradient(180deg, var(--glow), transparent);
    transition: height 0.4s;
  }
  .skill-card:hover { border-color: rgba(0,229,195,0.35); transform: translateY(-4px); background: rgba(0,229,195,0.03); }
  .skill-card:hover::before { height: 80px; }
  .skill-icon {
    width: 44px; height: 44px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
  }
  .skill-name {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
    color: var(--text);
    letter-spacing: -0.02em;
  }
  .skill-desc {
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.65;
    margin-bottom: 1.25rem;
  }
  .skill-bar-wrap {
    height: 3px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
  }
  .skill-bar {
    height: 100%;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    width: 0;
    transition: width 1.2s cubic-bezier(0.25,0.46,0.45,0.94);
  }
  .skill-level {
    font-family: 'DM Mono', monospace;
    font-size: 0.68rem;
    color: var(--muted);
    margin-top: 0.4rem;
    letter-spacing: 0.05em;
  }

  /* SERVICES */
  #services { background: var(--bg2); }
  .services-inner { max-width: 1100px; margin: 0 auto; }
  .services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3.5rem;
  }
  .service-card {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s, transform 0.25s;
  }
  .service-card:hover { border-color: rgba(0,229,195,0.3); transform: translateY(-3px); }
  .service-num {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 3rem;
    color: rgba(255,255,255,0.04);
    position: absolute;
    top: 1rem; right: 1.5rem;
    letter-spacing: -0.05em;
    line-height: 1;
  }
  .service-icon {
    width: 48px; height: 48px;
    background: rgba(0,229,195,0.08);
    border: 1px solid rgba(0,229,195,0.15);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
  }
  .service-title {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
  }
  .service-desc {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.7;
  }
  .service-tags {
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-top: 1.25rem;
  }
  .tag {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    color: var(--accent);
    background: rgba(0,229,195,0.07);
    border: 1px solid rgba(0,229,195,0.15);
    padding: 3px 10px;
    border-radius: 100px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  /* PROJECTS */
  #projects { background: var(--bg); }
  .projects-inner { max-width: 1100px; margin: 0 auto; }
  .projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 3.5rem;
  }
  .project-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    position: relative;
    transition: border-color 0.3s, transform 0.25s;
    overflow: hidden;
  }
  .project-card.featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 2rem;
    align-items: center;
    background: linear-gradient(135deg, rgba(0,229,195,0.03) 0%, rgba(0,119,255,0.03) 100%);
  }
  .project-card:hover { border-color: rgba(0,229,195,0.25); transform: translateY(-3px); }
  .project-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    color: var(--accent);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
  }
  .project-title {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text);
    letter-spacing: -0.03em;
    margin-bottom: 0.75rem;
  }
  .project-desc {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 1.25rem;
  }
  .project-stack {
    display: flex; flex-wrap: wrap; gap: 6px;
  }
  .stack-tag {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    background: var(--bg3);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 4px;
  }
  .project-mockup {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.78rem;
    line-height: 1.7;
  }
  .project-link {
    display: inline-flex; align-items: center; gap: 6px;
    margin-top: 1.25rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: gap 0.2s;
  }
  .project-link:hover { gap: 10px; }

  /* CONTACT */
  #contact {
    background: var(--bg2);
    text-align: center;
  }
  .contact-inner { max-width: 680px; margin: 0 auto; }
  #contact h2 { margin-bottom: 1rem; }
  .contact-sub {
    color: var(--muted);
    font-size: 0.97rem;
    line-height: 1.75;
    margin-bottom: 2.5rem;
  }
  .contact-methods {
    display: flex; justify-content: center; gap: 1rem;
    flex-wrap: wrap;
  }
  .contact-pill {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 0.75rem 1.5rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.78rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: border-color 0.25s, color 0.25s, transform 0.2s;
  }
  .contact-pill:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
  .contact-pill-icon { font-size: 1rem; }

  /* FOOTER */
  footer {
    background: var(--bg);
    padding: 2rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border);
  }
  .footer-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1rem;
    color: var(--muted);
    letter-spacing: -0.03em;
  }
  .footer-logo span { color: var(--accent); }
  .footer-copy {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.05em;
  }


  .about-photo-wrap {
    width: 88px; height: 88px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    overflow: hidden;
    margin-bottom: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 0 0 4px rgba(0,229,195,0.12);
  }
  .about-photo {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: center top;
    filter: grayscale(15%);
    transition: filter 0.3s;
  }
  .about-photo:hover { filter: grayscale(0%); }

  /* ANIMATE ON SCROLL */
  .aos { opacity: 0; transform: translateY(32px); transition: opacity 0.7s, transform 0.7s; }
  .aos.visible { opacity: 1; transform: translateY(0); }

  /* MOBILE */
  @media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    section { padding: 3rem 1.5rem; }
    #hero { padding: 6rem 1.5rem 3rem; min-height: 80vh; }
    h1 { font-size: clamp(2rem, 5vw, 4rem); }
    .about-inner { grid-template-columns: 1fr; gap: 2.5rem; }
    .services-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    .project-card.featured { grid-column: span 1; grid-template-columns: 1fr; }
    .hero-stats { gap: 1.5rem; flex-wrap: wrap; justify-content: center; }
    .scroll-indicator { bottom: 1rem; }
    footer { flex-direction: column; gap: 1rem; text-align: center; }
  }