:root {
    --bg: #0a0c0f;
    --bg2: #0f1217;
    --card: #13161c;
    --border: #1e2330;
    --green: #39ff9a;
    --green-dim: #1a5c3a;
    --cyan: #00e5ff;
    --text: #c8d4e0;
    --muted: #566272;
    --white: #eef2f7;
    --red: #ff4757;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Syne', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
  }

  /* ── NOISE OVERLAY ── */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
  }

  /* ── GRID BG ── */
  .grid-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
      linear-gradient(rgba(57,255,154,0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(57,255,154,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
  }

  @keyframes drift { from { transform: translateY(0); } to { transform: translateY(40px); } }

  /* ── LAYOUT ── */
  .container { max-width: 1100px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 10; }

  /* ── NAV ── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 500;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    background: rgba(10,12,15,0.85);
    backdrop-filter: blur(16px);
  }
  nav .inner { display: flex; align-items: center; justify-content: space-between; max-width: 1100px; margin: 0 auto; padding: 0 32px; }
  .nav-logo { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--green); font-size: 1.1rem; text-decoration: none; letter-spacing: -0.5px; }
  .nav-logo span { color: var(--muted); }
  .nav-links { display: flex; gap: 28px; list-style: none; }
  .nav-links a { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--muted); text-decoration: none; letter-spacing: 0.05em; text-transform: uppercase; transition: color 0.2s; }
  .nav-links a:hover { color: var(--green); }

  /* ── HERO ── */
  #hero {
    min-height: 100vh; display: flex; flex-direction: column; justify-content: center;
    padding: 120px 0 80px;
  }
  .hero-pre {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem; color: var(--green); letter-spacing: 0.15em;
    text-transform: uppercase; margin-bottom: 20px;
    display: flex; align-items: center; gap: 10px;
  }
  .hero-pre::before { content: ''; display: block; width: 32px; height: 1px; background: var(--green); }
  h1.hero-name {
    font-size: clamp(3.5rem, 8vw, 7rem);
    font-weight: 800; line-height: 0.95;
    color: var(--white);
    letter-spacing: -3px;
    margin-bottom: 16px;
  }
  h1.hero-name .accent { color: var(--green); }
  .hero-alias {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--muted);
    margin-bottom: 28px;
    letter-spacing: -0.5px;
  }
  .hero-alias .at { color: var(--cyan); }
  .hero-desc {
    max-width: 520px;
    font-size: 1.05rem;
    color: var(--text);
    margin-bottom: 48px;
    line-height: 1.7;
  }
  .hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem; font-weight: 600;
    letter-spacing: 0.05em; text-decoration: none;
    border-radius: 4px; transition: all 0.2s;
    text-transform: uppercase;
  }
  .btn-primary {
    background: var(--green); color: #050a06;
    border: 1px solid var(--green);
  }
  .btn-primary:hover { background: transparent; color: var(--green); }
  .hero-scroll-hint {
    margin-top: 80px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem; color: var(--muted);
    letter-spacing: 0.1em; display: flex; align-items: center; gap: 10px;
    animation: fadeInUp 1.2s 0.8s both;
  }
  .scroll-line { width: 48px; height: 1px; background: var(--border); }

  /* ── TYPING ── */
  .typed { border-right: 2px solid var(--green); padding-right: 3px; animation: blink 1s infinite; }
  @keyframes blink { 50% { border-color: transparent; } }

  /* ── SECTIONS ── */
  section { padding: 100px 0; }
  .section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem; color: var(--green); letter-spacing: 0.2em;
    text-transform: uppercase; margin-bottom: 12px;
    display: flex; align-items: center; gap: 12px;
  }
  .section-label::after { content: ''; flex: 1; max-width: 80px; height: 1px; background: var(--green-dim); }
  h2.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800; color: var(--white); letter-spacing: -1.5px;
    margin-bottom: 60px;
    line-height: 1.05;
  }

  /* ── ABOUT ── */
  #about .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
  .about-text p { margin-bottom: 20px; line-height: 1.8; }
  .about-text p strong { color: var(--white); }
  .about-facts { display: flex; flex-direction: column; gap: 16px; }
  .fact-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px 24px;
    display: flex; gap: 16px; align-items: flex-start;
    transition: border-color 0.2s;
  }
  .fact-card:hover { border-color: var(--green); }
  .fact-icon { font-size: 1.4rem; flex-shrink: 0; }
  .fact-title { font-weight: 600; color: var(--white); font-size: 0.9rem; margin-bottom: 4px; }
  .fact-sub { font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--muted); }

  /* ── SKILLS ── */
  #skills { background: var(--bg2); }
  .skills-groups { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
  .skill-group {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px;
    transition: border-color 0.25s, transform 0.25s;
  }
  .skill-group:hover { border-color: var(--green); transform: translateY(-4px); }
  .skill-group-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem; color: var(--green); letter-spacing: 0.15em;
    text-transform: uppercase; margin-bottom: 20px;
    padding-bottom: 12px; border-bottom: 1px solid var(--border);
  }
  .skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
  .skill-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem; color: var(--text);
    background: rgba(57,255,154,0.06);
    border: 1px solid rgba(57,255,154,0.15);
    border-radius: 4px;
    padding: 4px 10px;
  }

  /* ── SELF-HOSTING ── */
  #selfhosting .sh-intro {
    max-width: 620px; margin-bottom: 48px; line-height: 1.75;
  }
  .sh-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-bottom: 48px; }
  .sh-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 22px 24px;
    display: flex; align-items: flex-start; gap: 16px;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, transform 0.2s, background 0.2s;
    position: relative;
    overflow: hidden;
  }
  .sh-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--green), var(--cyan));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s;
  }
  .sh-card:hover::before { transform: scaleX(1); }
  .sh-card:hover { border-color: var(--green); transform: translateY(-3px); background: #161a22; }
  .sh-card-icon { font-size: 1.6rem; flex-shrink: 0; }
  .sh-card-name { font-weight: 700; color: var(--white); font-size: 0.95rem; margin-bottom: 3px; }
  .sh-card-desc { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--muted); }
  .sh-tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    padding: 2px 7px;
    border-radius: 3px;
    margin-top: 6px;
    background: rgba(57,255,154,0.08);
    color: var(--green);
    border: 1px solid rgba(57,255,154,0.2);
  }
  .sh-portfolio-btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 16px 32px;
    background: linear-gradient(135deg, rgba(57,255,154,0.1), rgba(0,229,255,0.1));
    border: 1px solid var(--green);
    border-radius: 8px;
    color: var(--green); font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem; font-weight: 600; letter-spacing: 0.05em;
    text-decoration: none; text-transform: uppercase;
    transition: all 0.25s;
  }
  .sh-portfolio-btn:hover { background: var(--green); color: #050a06; }
  .sh-portfolio-btn svg { width: 18px; height: 18px; }

  /* ── PROJECTS ── */
  #projects { background: var(--bg2); }
  .projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
  .project-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px;
    display: flex; flex-direction: column;
    transition: border-color 0.2s, transform 0.2s;
    text-decoration: none; color: inherit;
  }
  .project-card:hover { border-color: var(--cyan); transform: translateY(-4px); }
  .project-lang {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem; color: var(--cyan); letter-spacing: 0.1em;
    text-transform: uppercase; margin-bottom: 12px;
  }
  .project-name { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 10px; }
  .project-desc { font-size: 0.88rem; color: var(--muted); line-height: 1.6; flex: 1; }
  .project-arrow { margin-top: 20px; color: var(--cyan); font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; }

  /* ── CONTACT ── */
  #contact { text-align: center; }
  .contact-inner { max-width: 600px; margin: 0 auto; }
  .contact-inner p { font-size: 1.05rem; color: var(--text); line-height: 1.8; margin-bottom: 48px; }
  .social-links { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
  .social-link {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem; text-decoration: none;
    transition: all 0.2s; letter-spacing: 0.05em;
  }
  .social-link:hover { border-color: var(--green); color: var(--green); }
  .social-link svg { width: 16px; height: 16px; }

  /* ── FOOTER ── */
  footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem; color: var(--muted);
  }
  footer a { color: var(--green); text-decoration: none; }

  /* ── ANIMATIONS ── */
  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .fade-in { opacity: 0; animation: fadeInUp 0.7s ease forwards; }
  .delay-1 { animation-delay: 0.1s; }
  .delay-2 { animation-delay: 0.25s; }
  .delay-3 { animation-delay: 0.4s; }
  .delay-4 { animation-delay: 0.55s; }
  .delay-5 { animation-delay: 0.7s; }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    #about .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .skills-groups { grid-template-columns: 1fr; }
    nav .inner { gap: 16px; }
    .nav-links { gap: 16px; }
  }