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

  :root {
    --bg: #0a0d12;
    --bg2: #0f1318;
    --bg3: #141820;
    --surface: #1a2030;
    --surface2: #212840;
    --border: rgba(100, 160, 255, 0.12);
    --border2: rgba(100, 160, 255, 0.25);
    --accent: #3d7fff;
    --accent2: #00d4aa;
    --accent3: #ff6b35;
    --text: #e8edf5;
    --text2: #8a9bb5;
    --text3: #4a5a70;
    --mono: 'JetBrains Mono', monospace;
    --sans: 'Syne', sans-serif;
  }

  html { scroll-behavior: smooth; }

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

  /* ── Grid background ── */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(rgba(61,127,255,0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(61,127,255,0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
  }

  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 3rem;
    background: rgba(10,13,18,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }

  .nav-logo {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--accent2);
    letter-spacing: 0.05em;
  }

  .nav-logo span { color: var(--text3); }

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

  .nav-links a {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text2);
    text-decoration: none;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.2s;
  }

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

  .nav-links a.active-link { color: var(--accent2); }

  /* ── HERO ── */
  #hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 3rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
  }

  .hero-content { max-width: 700px; }

  .hero-label {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent2);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .hero-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--accent2);
  }

  h1 {
    font-family: var(--sans);
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    line-height: 1.0;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
  }

  h1 .name-first { color: var(--text); }
  h1 .name-last {
    color: var(--accent);
    display: block;
  }

  .hero-subtitle {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--text2);
    margin-bottom: 2rem;
    max-width: 520px;
    line-height: 1.8;
  }

  .hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 2.5rem;
  }

  .tag {
    font-family: var(--mono);
    font-size: 11px;
    padding: 4px 10px;
    border: 1px solid var(--border2);
    color: var(--text2);
    letter-spacing: 0.05em;
    border-radius: 2px;
    background: var(--surface);
  }

  .tag.active {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(61,127,255,0.08);
  }

  .hero-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 12px;
    padding: 10px 20px;
    text-decoration: none;
    letter-spacing: 0.08em;
    transition: all 0.2s;
    border-radius: 2px;
  }

  .btn-primary {
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
  }

  .btn-primary:hover {
    background: transparent;
    color: var(--accent);
  }

  .btn-ghost {
    border: 1px solid var(--border2);
    color: var(--text2);
  }

  .btn-ghost:hover {
    border-color: var(--accent2);
    color: var(--accent2);
  }

  /* ── SECTION BASE ── */
  section {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 5rem 3rem;
  }

  .section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
  }

  .section-num {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.1em;
  }

  .section-title {
    font-family: var(--sans);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
  }

  .section-line {
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  /* ── SKILLS ── */
  .skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  .skill-card {
    background: var(--bg2);
    padding: 1.75rem;
    transition: background 0.2s;
  }

  .skill-card:hover { background: var(--bg3); }

  .skill-icon {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border2);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--accent);
    letter-spacing: 0.05em;
  }

  .skill-card h3 {
    font-family: var(--sans);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
  }

  .skill-card p {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text2);
    line-height: 1.7;
  }

  .skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 1rem;
  }

  .skill-item {
    font-family: var(--mono);
    font-size: 10px;
    padding: 3px 8px;
    background: var(--surface);
    color: var(--text2);
    border-radius: 2px;
    letter-spacing: 0.04em;
  }

  /* ── CERTIFICATIONS ── */
  .certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
  }

  .cert-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
    overflow: hidden;
  }

  .cert-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.2s;
  }

  .cert-card:hover { border-color: var(--border2); background: var(--bg3); }
  .cert-card:hover::before { opacity: 1; }

  .cert-badge {
    width: 44px;
    height: 44px;
    background: rgba(61,127,255,0.1);
    border: 1px solid var(--border2);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-family: var(--mono);
    font-size: 9px;
    color: var(--accent);
    text-align: center;
    line-height: 1.3;
    letter-spacing: 0.02em;
  }

  .cert-info { flex: 1; }

  .cert-name {
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: -0.01em;
  }

  .cert-issuer {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent2);
    letter-spacing: 0.05em;
    margin-bottom: 6px;
  }

  .cert-date {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text3);
  }

  /* ── EXPERIENCE ── */
  .exp-timeline {
    position: relative;
    padding-left: 2rem;
  }

  .exp-timeline::before {
    content: '';
    position: absolute;
    left: 0; top: 8px; bottom: 0;
    width: 1px;
    background: var(--border);
  }

  .exp-item {
    position: relative;
    padding-bottom: 2.5rem;
    margin-left: 1.5rem;
  }

  .exp-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 8px;
    width: 8px;
    height: 8px;
    border: 1px solid var(--accent);
    background: var(--bg);
    transform: rotate(45deg);
  }

  .exp-item.current::before {
    background: var(--accent);
  }

  .exp-meta {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text3);
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
  }

  .exp-role {
    font-family: var(--sans);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 2px;
  }

  .exp-company {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent2);
    margin-bottom: 0.75rem;
    letter-spacing: 0.04em;
  }

  .exp-desc {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text2);
    line-height: 1.8;
    max-width: 600px;
  }

  /* ── SOCIAL ── */
  .social-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  .social-card {
    background: var(--bg2);
    padding: 2rem;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: background 0.2s;
    position: relative;
  }

  .social-card:hover { background: var(--bg3); }

  .social-card-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--text3);
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .social-card-name {
    font-family: var(--sans);
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
  }

  .social-card-handle {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--accent);
  }

  .social-arrow {
    position: absolute;
    top: 1.5rem; right: 1.5rem;
    color: var(--text3);
    font-size: 14px;
    transition: color 0.2s, transform 0.2s;
  }

  .social-card:hover .social-arrow {
    color: var(--accent);
    transform: translate(3px, -3px);
  }

  /* ── FOOTER ── */
  footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    padding: 2rem 3rem;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  footer p {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text3);
  }

  footer a {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent2);
    text-decoration: none;
  }

  /* ── ANIMATIONS ── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .hero-content > * {
    animation: fadeUp 0.6s ease both;
  }

  .hero-label { animation-delay: 0.1s; }
  h1 { animation-delay: 0.2s; }
  .hero-subtitle { animation-delay: 0.3s; }
  .hero-tags { animation-delay: 0.4s; }
  .hero-links { animation-delay: 0.5s; }

  /* ── STATUS DOT ── */
  .status-dot {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent2);
    letter-spacing: 0.05em;
  }

  .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent2);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    section, #hero { padding: 4rem 1.5rem; }
    .social-grid { grid-template-columns: 1fr; }
    footer { flex-direction: column; gap: 0.5rem; text-align: center; }
  }