:root {
    --neon: #00ff9f;
    --neon2: #00d4ff;
    --neon3: #ff0057;
    --bg: #050a0e;
    --bg2: #0a1520;
    --bg3: #0d1e2e;
    --text: #c9e8ff;
    --muted: #4a7a99;
    --border: #1a3a52;
    --font-mono: 'Courier New', Courier, monospace;
  }

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

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

  /* MATRIX RAIN CANVAS */
  #matrix-canvas {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none; z-index: 0;
    opacity: 0.07;
  }

  /* SCANLINE OVERLAY */
  body::after {
    content: '';
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background: repeating-linear-gradient(
      0deg, transparent, transparent 2px,
      rgba(0,255,159,0.015) 2px, rgba(0,255,159,0.015) 4px
    );
    pointer-events: none; z-index: 1;
    animation: scanmove 8s linear infinite;
  }

  @keyframes scanmove {
    0% { background-position: 0 0; }
    100% { background-position: 0 100px; }
  }

  /* NAV */
  nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 2rem;
    height: 56px;
    background: rgba(5,10,14,0.92);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(6px);
  }

  .nav-logo {
    color: var(--neon); font-size: 1.1rem; font-weight: bold;
    text-decoration: none; letter-spacing: 0.1em;
  }

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

  .nav-links { display: flex; gap: 1.5rem; }
  .nav-links a {
    color: var(--muted); text-decoration: none; font-size: 0.8rem;
    letter-spacing: 0.12em; text-transform: uppercase;
    transition: color 0.2s;
    position: relative;
  }
  .nav-links a::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 0; height: 1px; background: var(--neon);
    transition: width 0.25s;
  }
  .nav-links a:hover { color: var(--neon); }
  .nav-links a:hover::after { width: 100%; }

  /* MAIN */
  main { position: relative; z-index: 2; }

  section { padding: 5rem 2rem; max-width: 1100px; margin: 0 auto; }

  /* HERO */
  #hero {
    min-height: 100vh;
    display: flex; flex-direction: column;
    justify-content: center;
    padding-top: 80px;
    max-width: 100%;
    padding-left: 8vw;
  }

  .hero-prompt {
    color: var(--muted); font-size: 0.85rem; margin-bottom: 0.5rem;
    letter-spacing: 0.08em;
  }

  .hero-name {
    font-size: clamp(2.5rem, 7vw, 5.5rem);
    font-weight: bold; line-height: 1.05;
    color: #fff;
    letter-spacing: -0.01em;
  }

  .hero-name .accent { color: var(--neon); text-shadow: 0 0 20px rgba(0,255,159,0.4); }

  .hero-title {
    margin-top: 1rem; font-size: 1rem;
    color: var(--neon2); letter-spacing: 0.15em;
  }

  .hero-desc {
    margin-top: 1.5rem;
    max-width: 520px; font-size: 0.9rem;
    color: var(--muted); line-height: 1.8;
    font-family: 'Courier New', monospace;
  }

  .typed-cursor {
    display: inline-block; width: 2px; height: 1em;
    background: var(--neon);
    animation: blink 0.8s infinite;
    vertical-align: middle; margin-left: 2px;
  }

  @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

  .hero-btns { display: flex; gap: 1rem; margin-top: 2.5rem; flex-wrap: wrap; }

  .btn {
    padding: 0.65rem 1.5rem; font-family: var(--font-mono);
    font-size: 0.82rem; letter-spacing: 0.12em; text-transform: uppercase;
    text-decoration: none; border-radius: 2px;
    cursor: pointer; transition: all 0.2s;
  }

  .btn-primary {
    background: var(--neon); color: #050a0e; border: none;
    font-weight: bold;
  }
  .btn-primary:hover { background: #00ffb3; box-shadow: 0 0 16px rgba(0,255,159,0.4); }

  .btn-outline {
    background: transparent; color: var(--neon2);
    border: 1px solid var(--neon2);
  }
  .btn-outline:hover { background: rgba(0,212,255,0.08); box-shadow: 0 0 12px rgba(0,212,255,0.2); }

  .status-bar {
    position: absolute; bottom: 2rem; left: 8vw;
    display: flex; gap: 2rem; font-size: 0.75rem; color: var(--muted);
    letter-spacing: 0.08em;
  }

  .status-item { display: flex; align-items: center; gap: 0.4rem; }
  .status-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--neon); animation: pulse 2s infinite;
  }

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

  /* SECTION HEADER */
  .sec-header {
    display: flex; align-items: center; gap: 1rem;
    margin-bottom: 3rem;
  }

  .sec-num {
    color: var(--neon); font-size: 0.8rem; letter-spacing: 0.2em;
    min-width: 28px;
  }

  .sec-title {
    font-size: 1.6rem; color: #fff; letter-spacing: 0.05em;
  }

  .sec-line {
    flex: 1; height: 1px;
    background: linear-gradient(90deg, var(--border), transparent);
  }

  /* ABOUT */
  .about-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 3rem; align-items: start;
  }

  .about-text p { color: var(--muted); line-height: 1.9; font-size: 0.9rem; margin-bottom: 1rem; }
  .about-text p span { color: var(--neon2); }

  .terminal-box {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 4px; overflow: hidden;
  }

  .terminal-bar {
    background: var(--bg3); padding: 0.5rem 0.75rem;
    display: flex; align-items: center; gap: 6px;
    border-bottom: 1px solid var(--border);
  }

  .t-btn {
    width: 10px; height: 10px; border-radius: 50%;
  }

  .terminal-body {
    padding: 1rem; font-size: 0.82rem; line-height: 1.9;
  }

  .t-prompt { color: var(--neon); }
  .t-cmd { color: #fff; }
  .t-out { color: var(--muted); padding-left: 1rem; }
  .t-key { color: var(--neon2); }
  .t-val { color: var(--neon); }

  /* SKILLS */
  .skills-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr));
    gap: 1rem;
  }

  .skill-card {
    background: var(--bg2); border: 1px solid var(--border);
    padding: 1.25rem; border-radius: 4px;
    transition: border-color 0.2s, transform 0.2s;
  }

  .skill-card:hover {
    border-color: var(--neon);
    transform: translateY(-3px);
  }

  .skill-cat {
    color: var(--neon); font-size: 0.72rem; letter-spacing: 0.2em;
    text-transform: uppercase; margin-bottom: 0.75rem;
  }

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

  .tag {
    background: rgba(0,255,159,0.06); border: 1px solid rgba(0,255,159,0.2);
    color: var(--text); font-size: 0.75rem;
    padding: 0.25rem 0.6rem; border-radius: 2px;
  }

  .tag.red { background: rgba(255,0,87,0.06); border-color: rgba(255,0,87,0.2); }
  .tag.blue { background: rgba(0,212,255,0.06); border-color: rgba(0,212,255,0.2); }

  /* PROJECTS */
  .projects-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr));
    gap: 1.25rem;
  }

  .project-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 4px; padding: 1.5rem;
    transition: all 0.2s; position: relative; overflow: hidden;
    cursor: pointer; text-decoration: none; display: block; color: inherit;
  }

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

  .project-card:hover { border-color: var(--neon); transform: translateY(-3px); }
  .project-card:hover::before { opacity: 1; }

  .proj-type {
    font-size: 0.7rem; letter-spacing: 0.18em;
    text-transform: uppercase; margin-bottom: 0.5rem;
  }

  .proj-type.security { color: var(--neon3); }
  .proj-type.dev { color: var(--neon2); }
  .proj-type.tool { color: var(--neon); }

  .proj-title { font-size: 1.05rem; color: #fff; margin-bottom: 0.5rem; font-weight: bold; }
  .proj-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.7; margin-bottom: 1rem; }

  .proj-stack { display: flex; gap: 0.4rem; flex-wrap: wrap; }
  .proj-stack span {
    font-size: 0.7rem; color: var(--muted);
    border: 1px solid var(--border); padding: 0.15rem 0.45rem; border-radius: 2px;
  }

  .proj-links {
    display: flex; gap: 0.75rem; margin-top: 1rem;
    padding-top: 1rem; border-top: 1px solid var(--border);
  }

  .proj-link {
    font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--neon2); text-decoration: none;
    transition: color 0.2s;
  }

  .proj-link:hover { color: var(--neon); }

  /* CTF / ACHIEVEMENTS */
  .ctf-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
    gap: 1rem;
  }

  .ctf-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 4px; padding: 1.25rem; text-align: center;
  }

  .ctf-num {
    font-size: 2.2rem; font-weight: bold; color: var(--neon);
    display: block; line-height: 1;
  }

  .ctf-label { font-size: 0.75rem; color: var(--muted); letter-spacing: 0.12em; margin-top: 0.5rem; }

  /* TIMELINE */
  .timeline { position: relative; padding-left: 1.5rem; }

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

  .tl-item {
    position: relative; margin-bottom: 2rem;
    padding-left: 1.5rem;
  }

  .tl-item::before {
    content: ''; position: absolute; left: -1.55rem; top: 6px;
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--neon); border: 2px solid var(--bg);
  }

  .tl-date { font-size: 0.75rem; color: var(--neon); letter-spacing: 0.12em; margin-bottom: 0.25rem; }
  .tl-title { font-size: 1rem; color: #fff; margin-bottom: 0.2rem; }
  .tl-sub { font-size: 0.82rem; color: var(--neon2); margin-bottom: 0.4rem; }
  .tl-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.7; }

  /* CONTACT */
  .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }

  .contact-links { display: flex; flex-direction: column; gap: 0.75rem; }

  .contact-link {
    display: flex; align-items: center; gap: 0.75rem;
    color: var(--muted); text-decoration: none; font-size: 0.85rem;
    padding: 0.75rem 1rem; border: 1px solid var(--border);
    border-radius: 4px; transition: all 0.2s;
  }

  .contact-link:hover {
    border-color: var(--neon); color: var(--neon);
    background: rgba(0,255,159,0.04);
  }

  .contact-icon { color: var(--neon); font-size: 1rem; width: 20px; text-align: center; }

  /* FOOTER */
  footer {
    position: relative; z-index: 2;
    border-top: 1px solid var(--border);
    padding: 1.5rem 8vw;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.75rem; color: var(--muted);
  }

  /* GLITCH */
  .glitch {
    position: relative;
    animation: glitch 4s infinite;
  }

  @keyframes glitch {
    0%,90%,100%{text-shadow:none}
    92%{text-shadow:2px 0 var(--neon3),-2px 0 var(--neon2)}
    94%{text-shadow:-2px 0 var(--neon3),2px 0 var(--neon2)}
    96%{text-shadow:none}
  }

  /* SCROLL INDICATOR */
  .scroll-hint {
    position: absolute; bottom: 2rem; right: 8vw;
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    font-size: 0.7rem; color: var(--muted); letter-spacing: 0.15em;
  }

  .scroll-arrow {
    width: 20px; height: 20px; border-right: 1px solid var(--muted);
    border-bottom: 1px solid var(--muted);
    transform: rotate(45deg);
    animation: arrowBounce 1.5s infinite;
    margin-top: -8px;
  }

  @keyframes arrowBounce { 0%,100%{transform:rotate(45deg) translate(0,0)} 50%{transform:rotate(45deg) translate(3px,3px)} }

  @media (max-width: 700px) {
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    #hero { padding-left: 1.5rem; }
    nav { padding: 0 1rem; }
    .nav-links { gap: 1rem; }
  }