:root {
    --bg: #0a0c0f;
    --surface: #111418;
    --border: #1e2530;
    --accent: #00ff9d;
    --accent2: #00c3ff;
    --danger: #ff3b5c;
    --text: #e8edf2;
    --muted: #5a6a7a;
    --mono: 'Share Tech Mono', monospace;
    --sans: 'Syne', sans-serif;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    overflow-x: hidden;
    cursor: default;
  }

  /* SCAN LINE OVERLAY */
  body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0,0,0,0.07) 2px,
      rgba(0,0,0,0.07) 4px
    );
    pointer-events: none;
    z-index: 9999;
  }

  /* CUSTOM CURSOR */
  .cursor {
    width: 12px; height: 12px;
    border: 2px solid var(--accent);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: transform 0.1s, width 0.2s, height 0.2s, border-color 0.2s;
    mix-blend-mode: screen;
  }

  /* NAV */
  nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 3rem;
    border-bottom: 1px solid var(--border);
    background: rgba(10,12,15,0.85);
    backdrop-filter: blur(12px);
  }

  .nav-logo {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--accent);
    letter-spacing: 0.15em;
  }

  .nav-links { display: flex; gap: 2.5rem; list-style: none; }
  .nav-links a {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--accent); }

  /* HERO */
  #hero {
    min-height: 100vh;
    display: flex; align-items: center;
    padding: 0 3rem;
    position: relative;
    overflow: hidden;
  }

  .hero-grid {
    position: absolute; inset: 0;
    background-image:
      linear-gradient(var(--border) 1px, transparent 1px),
      linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.35;
  }

  .hero-glow {
    position: absolute;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(0,255,157,0.08) 0%, transparent 70%);
    top: 50%; left: 60%;
    transform: translate(-50%, -50%);
    pointer-events: none;
  }

  .hero-content { position: relative; z-index: 1; max-width: 900px; }

  .hero-tag {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: 0.75rem;
  }
  .hero-tag::before {
    content: '';
    display: inline-block;
    width: 24px; height: 2px;
    background: var(--accent);
  }

  .hero-name {
    font-size: clamp(3.5rem, 8vw, 7rem);
    font-weight: 800;
    line-height: 0.9;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
  }

  .hero-name span {
    display: block;
    -webkit-text-stroke: 2px var(--accent);
    color: transparent;
  }

  .hero-desc {
    font-family: var(--mono);
    font-size: 0.9rem;
    color: var(--muted);
    max-width: 480px;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    border-left: 2px solid var(--accent);
    padding-left: 1.2rem;
  }

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

  .btn {
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.85rem 2rem;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
  }

  .btn-primary {
    background: var(--accent);
    color: var(--bg);
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  }
  .btn-primary:hover { background: #00ffb3; transform: translateY(-2px); }

  .btn-outline {
    border: 1px solid var(--border);
    color: var(--muted);
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent); }

  /* SECTIONS */
  section { padding: 6rem 3rem; }

  .section-header {
    display: flex; align-items: center; gap: 1.5rem;
    margin-bottom: 4rem;
  }

  .section-num {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.2em;
  }

  .section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
  }

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

  /* ABOUT */
  #about { background: var(--surface); }

  .about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    align-items: center;
    max-width: 1100px;
  }

  .about-info {}

  .about-stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2.5rem;
  }

  .stat-card {
    border: 1px solid var(--border);
    padding: 1.5rem;
    position: relative;
    clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  }
  .stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 30px; height: 2px;
    background: var(--accent);
  }

  .stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    font-family: var(--mono);
  }

  .stat-label {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.1em;
    margin-top: 0.3rem;
  }

  .terminal-box {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 2rem;
    font-family: var(--mono);
    font-size: 0.82rem;
    line-height: 1.9;
    color: var(--muted);
    position: relative;
  }

  .terminal-bar {
    display: flex; gap: 0.5rem;
    margin-bottom: 1.5rem;
  }
  .t-dot { width: 10px; height: 10px; border-radius: 50%; }
  .t-dot:nth-child(1) { background: var(--danger); }
  .t-dot:nth-child(2) { background: #ffb800; }
  .t-dot:nth-child(3) { background: var(--accent); }

  .t-line { display: block; }
  .t-cmd { color: var(--accent); }
  .t-val { color: var(--text); }
  .t-comment { color: #3a4a5a; }

  /* EXPERIENCE */
  .exp-card {
    border: 1px solid var(--border);
    padding: 2.5rem;
    position: relative;
    max-width: 800px;
    clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
    transition: border-color 0.3s;
  }
  .exp-card:hover { border-color: rgba(0,255,157,0.3); }

  .exp-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 100%;
    background: var(--accent);
  }

  .exp-meta {
    display: flex; gap: 1rem; align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
  }

  .exp-company {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    background: rgba(0,255,157,0.08);
    padding: 0.2rem 0.7rem;
  }

  .exp-date {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--muted);
  }

  .exp-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    letter-spacing: -0.01em;
  }

  .exp-bullets { list-style: none; }
  .exp-bullets li {
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.7;
    padding-left: 1.2rem;
    position: relative;
    margin-bottom: 0.6rem;
  }
  .exp-bullets li::before {
    content: '›';
    position: absolute; left: 0;
    color: var(--accent);
  }

  /* SKILLS */
  #skills { background: var(--surface); }

  .skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1100px;
  }

  .skill-group-title {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1.2rem;
    display: flex; align-items: center; gap: 0.5rem;
  }
  .skill-group-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  .skill-item {
    margin-bottom: 1.2rem;
  }

  .skill-label {
    display: flex; justify-content: space-between;
    font-family: var(--mono);
    font-size: 0.75rem;
    margin-bottom: 0.4rem;
  }

  .skill-label span:first-child { color: var(--text); }
  .skill-label span:last-child { color: var(--muted); }

  .skill-bar-bg {
    height: 3px;
    background: var(--border);
    position: relative;
    overflow: hidden;
  }

  .skill-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    position: relative;
    transform-origin: left;
    animation: fillBar 1.5s ease-out forwards;
    transform: scaleX(0);
  }

  @keyframes fillBar {
    to { transform: scaleX(1); }
  }

  .tools-grid {
    display: flex; flex-wrap: wrap; gap: 0.6rem;
    margin-top: 0.5rem;
  }

  .tool-tag {
    font-family: var(--mono);
    font-size: 0.7rem;
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--border);
    color: var(--muted);
    letter-spacing: 0.05em;
    transition: all 0.2s;
    clip-path: polygon(0 0, calc(100% - 5px) 0, 100% 5px, 100% 100%, 5px 100%, 0 calc(100% - 5px));
  }
  .tool-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0,255,157,0.05);
  }

  /* CERTS */
  .certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
  }

  .cert-card {
    border: 1px solid var(--border);
    padding: 2rem;
    position: relative;
    transition: all 0.3s;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  }
  .cert-card:hover {
    border-color: rgba(0,195,255,0.4);
    background: rgba(0,195,255,0.03);
  }
  .cert-card::after {
    content: '✓';
    position: absolute;
    top: 1.5rem; right: 1.5rem;
    font-size: 1rem;
    color: var(--accent);
    font-family: var(--mono);
  }

  .cert-issuer {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--accent2);
    letter-spacing: 0.1em;
    margin-bottom: 0.6rem;
  }

  .cert-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
  }

  .cert-date {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--muted);
  }

  /* EDUCATION */
  #education { background: var(--surface); }

  .edu-timeline { max-width: 750px; position: relative; }
  .edu-timeline::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--accent), var(--accent2), transparent);
  }

  .edu-item {
    padding-left: 3rem;
    padding-bottom: 3rem;
    position: relative;
  }

  .edu-item::before {
    content: '';
    position: absolute;
    left: -4px; top: 8px;
    width: 9px; height: 9px;
    background: var(--accent);
    border: 2px solid var(--bg);
    border-radius: 50%;
  }

  .edu-period {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
  }

  .edu-degree {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
  }

  .edu-school {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--muted);
    margin-bottom: 0.5rem;
  }

  .edu-note {
    font-family: var(--mono);
    font-size: 0.73rem;
    color: var(--muted);
    line-height: 1.6;
  }

  /* CONTACT */
  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 700px;
  }

  .contact-item {
    border: 1px solid var(--border);
    padding: 1.8rem;
    display: flex; align-items: flex-start; gap: 1rem;
    text-decoration: none;
    transition: all 0.3s;
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  }
  .contact-item:hover {
    border-color: var(--accent);
    background: rgba(0,255,157,0.04);
  }

  .contact-icon {
    font-family: var(--mono);
    font-size: 1.2rem;
    color: var(--accent);
    line-height: 1;
  }

  .contact-label {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.3rem;
  }

  .contact-value {
    font-size: 0.9rem;
    color: var(--text);
    font-family: var(--mono);
  }

  /* FOOTER */
  footer {
    border-top: 1px solid var(--border);
    padding: 2rem 3rem;
    display: flex; justify-content: space-between; align-items: center;
    background: var(--bg);
  }

  footer p {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--muted);
  }

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

  /* ANIMATIONS */
  .fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* BLINKING CURSOR */
  .blink {
    display: inline-block;
    width: 8px; height: 1em;
    background: var(--accent);
    margin-left: 2px;
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
  }
  @keyframes blink { 50% { opacity: 0; } }

  /* RESPONSIVE */
  @media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { gap: 1.2rem; }
    section { padding: 4rem 1.5rem; }
    #hero { padding: 0 1.5rem; }
    .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .contact-grid { grid-template-columns: 1fr; }
    footer { flex-direction: column; gap: 0.5rem; text-align: center; }
  }