:root {
      --bg:         #0b0f19;
      --bg2:        #0f172a;
      --cyan:       #06b6d4;
      --cyan-dim:   rgba(6,182,212,0.15);
      --purple:     #a855f7;
      --purple-dim: rgba(168,85,247,0.15);
      --green:      #22c55e;
      --green-dim:  rgba(34,197,94,0.12);
      --text:       #e2e8f0;
      --muted:      #64748b;
      --glass:      rgba(15,23,42,0.6);
      --border:     rgba(255,255,255,0.07);
      --mono:       'JetBrains Mono', monospace;
      --sans:       'Syne', sans-serif;
      --r:          12px;
      --ease:       0.35s cubic-bezier(0.4,0,0.2,1);
    }

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

    html {
      scroll-behavior: smooth;
      scrollbar-width: thin;
      scrollbar-color: var(--cyan) var(--bg2);
    }
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: var(--bg2); }
    ::-webkit-scrollbar-thumb { background: var(--cyan); border-radius: 3px; }

    body {
      font-family: var(--sans);
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      overflow-x: hidden;
    }
    a  { color: inherit; text-decoration: none; }
    ul { list-style: none; }



    /* NAVBAR */
    #navbar {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      padding: 1rem 2rem;
      display: flex; align-items: center; justify-content: space-between;
      backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
      background: rgba(11,15,25,.78);
      border-bottom: 1px solid var(--border);
      transition: padding var(--ease);
    }
    #navbar.scrolled { padding: .65rem 2rem; }

    .nav-logo { font-family: var(--mono); font-size: 1.1rem; font-weight: 700; color: var(--text); }
    .nav-logo .dot { color: var(--cyan); }

    .nav-links { display: flex; gap: 2.5rem; }
    .nav-links a {
      font-family: var(--mono); font-size: .78rem; color: var(--muted);
      text-transform: uppercase; letter-spacing: .05em;
      position: relative; transition: color var(--ease);
    }
    .nav-links a::after {
      content: ''; position: absolute; bottom: -4px; left: 0;
      width: 0; height: 1.5px;
      background: linear-gradient(90deg, var(--cyan), var(--purple));
      transition: width var(--ease);
    }
    .nav-links a:hover, .nav-links a.active { color: var(--text); }
    .nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

    /* HAMBURGER */
    .hamburger {
      display: none; align-items: center; justify-content: center;
      width: 38px; height: 38px;
      border: 1px solid rgba(6,182,212,.3); border-radius: 6px;
      background: rgba(6,182,212,.05); transition: var(--ease);
      position: relative;
    }
    .hamburger:hover {
      border-color: var(--cyan); background: var(--cyan-dim);
      box-shadow: 0 0 16px var(--cyan-dim);
    }
    .hamburger::before, .hamburger::after {
      content: ''; position: absolute; top: 6px; bottom: 6px; width: 3px;
      border: 1px solid rgba(6,182,212,.25); transition: var(--ease);
    }
    .hamburger::before { left: 4px; border-right: none; border-radius: 2px 0 0 2px; }
    .hamburger::after  { right: 4px; border-left: none;  border-radius: 0 2px 2px 0; }
    .hamburger:hover::before, .hamburger:hover::after { border-color: rgba(6,182,212,.5); }
    .hb-lines { display: flex; flex-direction: column; gap: 5px; }
    .hb-lines span {
      display: block; height: 1.5px; background: var(--cyan);
      border-radius: 2px; transition: var(--ease); transform-origin: center;
    }
    .hb-lines span:nth-child(1) { width: 18px; }
    .hb-lines span:nth-child(2) { width: 12px; }
    .hb-lines span:nth-child(3) { width: 16px; }
    .hamburger.open .hb-lines span:nth-child(1) { width: 18px; transform: translateY(6.5px) rotate(45deg); }
    .hamburger.open .hb-lines span:nth-child(2) { width: 0; opacity: 0; }
    .hamburger.open .hb-lines span:nth-child(3) { width: 18px; transform: translateY(-6.5px) rotate(-45deg); }

    /* MOBILE NAV */
    .mobile-nav {
      position: fixed; top: 62px; left: 0; right: 0;
      background: rgba(11,15,25,.97); backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border); z-index: 999;
      padding: 1rem 0; opacity: 0; transform: translateY(-10px);
      max-height: 0; overflow: hidden; pointer-events: none;
      transition: opacity var(--ease), transform var(--ease), max-height var(--ease);
    }
    .mobile-nav.open {
      opacity: 1; transform: translateY(0);
      max-height: 360px; pointer-events: auto;
    }
    .mobile-nav a {
      display: block; padding: .9rem 2rem;
      font-family: var(--mono); font-size: .85rem; color: var(--muted);
      text-transform: uppercase; letter-spacing: .1em;
      border-left: 2px solid transparent;
      opacity: 0; transform: translateY(-6px);
      transition: opacity .35s ease, transform .35s ease, color var(--ease), background var(--ease), border-color var(--ease);
      transition-delay: 0s;
    }
    .mobile-nav.open a { opacity: 1; transform: translateY(0); transition-delay: var(--delay); }
    .mobile-nav a:nth-child(1) { --delay: .05s; }
    .mobile-nav a:nth-child(2) { --delay: .1s; }
    .mobile-nav a:nth-child(3) { --delay: .15s; }
    .mobile-nav a:nth-child(4) { --delay: .2s; }
    .mobile-nav a:nth-child(5) { --delay: .25s; }
    .mobile-nav a:nth-child(6) { --delay: .3s; }
    .mobile-nav a:hover { color: var(--cyan); border-color: var(--cyan); background: var(--cyan-dim); }

    /* SECTION */
    section {
      min-height: 100vh; padding: 7rem 2rem 5rem;
      max-width: 1200px; margin: 0 auto;
    }
    .section-label {
      font-family: var(--mono); font-size: .72rem; color: var(--cyan);
      text-transform: uppercase; letter-spacing: .2em; margin-bottom: .5rem;
    }
    .section-title {
      font-size: clamp(2rem,5vw,3.5rem); font-weight: 800;
      line-height: 1.1; margin-bottom: 1rem;
    }
    .section-title .accent { color: var(--cyan); }

    /* REVEAL */
    .reveal { opacity: 0; transform: translateY(36px); transition: opacity .7s ease, transform .7s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    /* HERO */
    #home {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 4rem; align-items: center;
      min-height: 100vh; padding-top: 8rem;
    }
    .hero-tag {
      display: inline-flex; align-items: center; gap: .5rem;
      font-family: var(--mono); font-size: .75rem; color: var(--green);
      background: var(--green-dim); border: 1px solid rgba(34,197,94,.25);
      padding: .3rem .9rem; border-radius: 100px; margin-bottom: 1.5rem;
    }
    .hero-tag::before {
      content: ''; width: 6px; height: 6px; background: var(--green);
      border-radius: 50%; animation: pulse 2s infinite;
    }
    @keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }
    .hero-heading { font-size: clamp(2.6rem,6vw,4.5rem); font-weight: 800; line-height: 1.05; }
    .hero-heading .name { color: var(--text); display: block; }
    .hero-heading .role {
      display: block; color: var(--cyan); font-size: .58em;
      font-weight: 600; letter-spacing: .04em; margin-top: .15em; opacity: .9;
    }
    .hero-desc { margin-top: 1.2rem; color: var(--muted); max-width: 440px; font-size: 1.05rem; line-height: 1.8; }
    .hero-cta  { margin-top: 2.2rem; display: flex; gap: 1rem; flex-wrap: wrap; }

    .btn {
      display: inline-flex; align-items: center; gap: .5rem;
      padding: .75rem 1.8rem; border-radius: var(--r);
      font-family: var(--mono); font-size: .82rem; font-weight: 600;
      letter-spacing: .05em; transition: var(--ease);
      border: 1.5px solid transparent;
    }
    .btn-primary { background: linear-gradient(135deg,var(--cyan),var(--purple)); color:#fff; box-shadow: 0 0 20px rgba(6,182,212,.3); }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 35px rgba(6,182,212,.5); }
    .btn-outline { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-dim); }
    .btn-outline:hover { background: var(--cyan); color: var(--bg); transform: translateY(-2px); }

    /* TERMINAL */
    .terminal {
      background: #0a0e1a; border: 1px solid rgba(6,182,212,.2);
      border-radius: var(--r); overflow: hidden;
      box-shadow: 0 0 60px rgba(6,182,212,.07), 0 40px 80px rgba(0,0,0,.6);
    }
    .terminal-bar {
      display: flex; align-items: center; gap: .5rem;
      padding: .75rem 1rem; background: #111827;
      border-bottom: 1px solid rgba(255,255,255,.06);
    }
    .t-dot { width: 12px; height: 12px; border-radius: 50%; }
    .t-dot:nth-child(1){ background:#ff5f57; }
    .t-dot:nth-child(2){ background:#febc2e; }
    .t-dot:nth-child(3){ background:#28c840; }
    .terminal-title { font-family: var(--mono); font-size: .72rem; color: var(--muted); margin: 0 auto; }
    .terminal-body  { padding: 1.5rem; font-family: var(--mono); font-size: .82rem; line-height: 1.9; }
    .t-line { opacity: 0; transform: translateX(-8px); transition: opacity .4s, transform .4s; }
    .t-line.show { opacity: 1; transform: translateX(0); }
    .t-prompt { color: var(--cyan); }
    .t-check  { color: var(--green); }
    .t-dim    { color: var(--muted); }
    .t-success{ color: var(--purple); }
    .t-cursor {
      display: inline-block; width: 8px; height: 14px; background: var(--cyan);
      vertical-align: middle; margin-left: 2px;
      animation: blink .9s step-end infinite;
    }
    @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

    /* ABOUT */
    #about { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
    .code-block {
      background: #0a0e1a; border: 1px solid var(--border);
      border-radius: var(--r); padding: 1.8rem;
      font-family: var(--mono); font-size: .83rem; line-height: 2;
      position: relative; overflow: hidden;
    }
    .code-block::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
      background: linear-gradient(90deg,var(--cyan),var(--purple),var(--green));
    }
    .cb-ln  { display: flex; gap: 1.5rem; }
    .cb-num { color: var(--muted); opacity: .4; user-select: none; min-width: 1.5rem; text-align: right; }
    .cb-kw  { color: var(--purple); }
    .cb-var { color: var(--cyan); }
    .cb-str { color: var(--green); }
    .cb-key { color: #f1c40f; }
    .cb-p   { color: var(--muted); }
    .about-text p { color: var(--muted); line-height: 1.9; margin-bottom: 1rem; }
    .about-text strong { color: var(--text); }
    .about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
    .stat-card {
      background: var(--glass); border: 1px solid var(--border);
      border-radius: var(--r); padding: 1.2rem;
      backdrop-filter: blur(10px); transition: var(--ease);
    }
    .stat-card:hover { border-color: var(--cyan); box-shadow: 0 0 20px var(--cyan-dim); }
    .stat-number { font-size: 2rem; font-weight: 800; color: var(--cyan); line-height: 1; }
    .stat-label  { font-family: var(--mono); font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; margin-top: .3rem; }

    /* SKILLS */
    .skills-header { text-align: center; margin-bottom: 3rem; }
    .skills-group  { margin-bottom: 3rem; }
    .skills-group-title {
      font-family: var(--mono); font-size: .75rem; color: var(--purple);
      text-transform: uppercase; letter-spacing: .2em; margin-bottom: 1.2rem;
      display: flex; align-items: center; gap: .8rem;
    }
    .skills-group-title::after {
      content: ''; flex: 1; height: 1px;
      background: linear-gradient(90deg,rgba(168,85,247,.4),transparent);
    }
    .skills-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; }
    .skill-card {
      background: var(--glass); border: 1px solid var(--border);
      border-radius: var(--r); padding: 1.3rem; text-align: center;
      backdrop-filter: blur(12px); transition: var(--ease);
      position: relative; overflow: hidden;
    }
    .skill-card::before {
      content: ''; position: absolute; inset: 0;
      background: linear-gradient(135deg,var(--cyan-dim),transparent);
      opacity: 0; transition: var(--ease);
    }
    .skill-card:hover { transform: translateY(-5px); border-color: var(--cyan); box-shadow: 0 0 25px var(--cyan-dim), 0 20px 40px rgba(0,0,0,.4); }
    .skill-card:hover::before { opacity: 1; }
    .skill-icon { width: 44px; height: 44px; margin: 0 auto .7rem; display: flex; align-items: center; justify-content: center; }
    .skill-icon svg { width: 100%; height: 100%; }
    .skill-name { font-family: var(--mono); font-size: .78rem; color: var(--text); }

    /* PROJECTS */
    .projects-header { text-align: center; margin-bottom: 3rem; }
    .projects-grid   { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }
    .project-card {
      background: var(--glass); border: 1px solid var(--border);
      border-radius: var(--r); backdrop-filter: blur(12px);
      transition: var(--ease); overflow: hidden;
      display: flex; flex-direction: column;
    }
    .project-card:hover { border-color: var(--purple); box-shadow: 0 0 30px var(--purple-dim), 0 25px 50px rgba(0,0,0,.5); transform: translateY(-4px); }
    .project-bar {
      background: #111827; padding: .6rem 1rem;
      border-bottom: 1px solid var(--border);
      display: flex; align-items: center; gap: .5rem;
      font-family: var(--mono); font-size: .7rem; color: var(--muted);
    }
    .project-bar .log-type { color: var(--cyan); }
    .project-body  { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
    .project-num   { font-family: var(--mono); font-size: .65rem; color: var(--muted); letter-spacing: .1em; margin-bottom: .5rem; }
    .project-title { font-size: 1.2rem; font-weight: 700; margin-bottom: .6rem; }
    .project-desc  { color: var(--muted); font-size: .9rem; line-height: 1.7; flex: 1; }
    .project-tech  { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.2rem; }
    .tech-tag {
      font-family: var(--mono); font-size: .68rem; padding: .25rem .7rem;
      border-radius: 100px; color: var(--cyan);
      background: var(--cyan-dim); border: 1px solid rgba(6,182,212,.2);
    }
    .project-links { display: flex; gap: 1rem; margin-top: 1.3rem; }
    .project-link  {
      font-family: var(--mono); font-size: .75rem; color: var(--muted);
      display: flex; align-items: center; gap: .4rem; transition: color var(--ease);
    }
    .project-link:hover { color: var(--cyan); }
    .project-link svg { width: 14px; height: 14px; }

    /* EXPERIENCE */
    .exp-header { margin-bottom: 3rem; }
    .timeline   { position: relative; padding-left: 3rem; }
    .timeline::before {
      content: ''; position: absolute; left: 9px; top: 0; bottom: 0;
      width: 2px; background: linear-gradient(180deg,var(--cyan),var(--purple),transparent);
    }
    .timeline-item   { position: relative; margin-bottom: 3rem; }
    .timeline-dot {
      position: absolute; left: -33px; top: 6px;
      width: 20px; height: 20px; border-radius: 50%;
      background: var(--bg); border: 2px solid var(--cyan);
      box-shadow: 0 0 15px var(--cyan-dim); transition: var(--ease);
    }
    .timeline-item:hover .timeline-dot { background: var(--cyan); box-shadow: 0 0 25px rgba(6,182,212,.6); }
    .timeline-year    { font-family: var(--mono); font-size: .72rem; color: var(--cyan); letter-spacing: .1em; margin-bottom: .4rem; }
    .timeline-role    { font-size: 1.2rem; font-weight: 700; margin-bottom: .2rem; }
    .timeline-company { font-family: var(--mono); font-size: .8rem; color: var(--purple); margin-bottom: .8rem; }
    .timeline-log     { background: var(--glass); border: 1px solid var(--border); border-radius: var(--r); padding: 1.2rem; backdrop-filter: blur(10px); }
    .tl-entry         { font-family: var(--mono); font-size: .78rem; color: var(--muted); line-height: 1.9; display: flex; gap: .8rem; }
    .tl-entry::before { content: '->'; color: var(--green); flex-shrink: 0; }

    /* CONTACT */
    .contact-wrap { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; align-items: start; }
    .contact-cmd  { font-family: var(--mono); font-size: .85rem; color: var(--muted); margin-bottom: 2rem; }
    .contact-cmd .prompt { color: var(--cyan); }
    .contact-cmd .flag   { color: var(--purple); }
    .contact-links { display: flex; flex-direction: column; gap: 1rem; }
    .contact-link {
      display: flex; align-items: center; gap: 1rem;
      padding: 1rem 1.2rem; background: var(--glass);
      border: 1px solid var(--border); border-radius: var(--r);
      backdrop-filter: blur(10px); font-family: var(--mono);
      font-size: .8rem; color: var(--muted); transition: var(--ease);
    }
    .contact-link:hover { border-color: var(--cyan); color: var(--cyan); transform: translateX(6px); }
    .contact-link svg { width: 18px; height: 18px; flex-shrink: 0; }
    .contact-form  { display: flex; flex-direction: column; gap: 1.2rem; }
    .form-group label {
      display: block; font-family: var(--mono); font-size: .72rem;
      color: var(--muted); margin-bottom: .5rem;
      letter-spacing: .1em; text-transform: uppercase;
    }
    .form-group input, .form-group textarea {
      width: 100%; padding: .85rem 1rem;
      background: var(--glass); border: 1px solid var(--border);
      border-radius: var(--r); color: var(--text);
      font-family: var(--mono); font-size: .85rem;
      backdrop-filter: blur(10px); transition: var(--ease);
      outline: none; resize: none;
    }
    .form-group textarea { height: 130px; }
    .form-group input:focus, .form-group textarea:focus { border-color: var(--cyan); box-shadow: 0 0 20px var(--cyan-dim); }
    .form-group input.err, .form-group textarea.err { border-color: #ef4444; }
    .ferr { font-family: var(--mono); font-size: .7rem; color: #ef4444; margin-top: .4rem; display: none; }
    .ferr.show { display: block; }
    .form-success {
      display: none; font-family: var(--mono); font-size: .82rem; color: var(--green);
      background: var(--green-dim); border: 1px solid rgba(34,197,94,.25);
      border-radius: var(--r); padding: 1rem 1.5rem; align-items: center; gap: .6rem;
    }
    .form-success.show { display: flex; }

    /* BACK TO TOP */
    #btt {
      position: fixed; bottom: 2rem; right: 2rem;
      width: 44px; height: 44px;
      background: linear-gradient(135deg,var(--cyan),var(--purple));
      border: none; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      opacity: 0; transform: translateY(20px);
      transition: var(--ease); z-index: 500;
      box-shadow: 0 0 20px rgba(6,182,212,.4);
    }
    #btt.show { opacity: 1; transform: translateY(0); }
    #btt svg  { color: #fff; width: 18px; height: 18px; }

    /* FOOTER */
    footer {
      border-top: 1px solid var(--border); padding: 2rem;
      text-align: center; font-family: var(--mono); font-size: 0.83rem; color: var(--muted);
    }
    footer span { color: var(--cyan); }

    /* RESPONSIVE */
    @media (max-width: 1024px) { .skills-grid { grid-template-columns: repeat(3,1fr); } }
    @media (max-width: 900px) {
      #home          { grid-template-columns: 1fr; gap: 3rem; }
      #about         { grid-template-columns: 1fr; }
      .contact-wrap  { grid-template-columns: 1fr; gap: 2rem; }
      .projects-grid { grid-template-columns: 1fr; }
      .nav-links     { display: none; }
      .hamburger     { display: flex; }
    }
    @media (max-width: 640px) {
      section        { padding: 6rem 1.2rem 4rem; }
      .skills-grid   { grid-template-columns: repeat(2,1fr); }
      .about-stats   { grid-template-columns: 1fr 1fr; }
      .hero-heading  { font-size: 2.2rem; }
    }
    @media (max-width: 400px) { .skills-grid { grid-template-columns: repeat(2,1fr); } }