:root{
    --bg-void:#0a0c10;
    --bg-main:#0d1117;
    --bg-sidebar:#0b0e13;
    --bg-panel:#131720;
    --bg-panel-hi:#181d28;
    --bg-tab-active:#0d1117;
    --border:#1f2530;
    --border-soft:#171b24;
    --text:#c9d3de;
    --text-dim:#5a6474;
    --text-bright:#eef2f7;
    --purple:#c996f0;
    --green:#7ee787;
    --blue:#79c0ff;
    --orange:#ffb774;
    --pink:#ff7fa8;
    --cyan:#66d9c9;
    --red:#ff6b6b;
    --mono: 'JetBrains Mono', monospace;
    --sans: 'Inter', sans-serif;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg-main);
    color:var(--text);
    font-family:var(--sans);
    font-size:15px;
    line-height:1.65;
    overflow-x:hidden;
  }
  ::selection{background:var(--purple); color:#0a0c10;}
  ::-webkit-scrollbar{width:10px; height:10px;}
  ::-webkit-scrollbar-track{background:var(--bg-main);}
  ::-webkit-scrollbar-thumb{background:var(--border); border-radius:5px;}
  ::-webkit-scrollbar-thumb:hover{background:var(--text-dim);}
  a{color:inherit; text-decoration:none;}
  :focus-visible{outline:2px solid var(--blue); outline-offset:2px;}

  .app{
    display:grid;
    grid-template-columns:250px 1fr;
    min-height:100vh;
  }

  /* ===== SIDEBAR ===== */
  .sidebar{
    background:var(--bg-sidebar);
    border-right:1px solid var(--border);
    display:flex;
    flex-direction:column;
    position:sticky;
    top:0;
    height:100vh;
    z-index:20;
    overflow:hidden;
  }
  #matrixCanvas{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    opacity:.16;
    pointer-events:none;
    z-index:0;
  }
  .sidebar > *{position:relative; z-index:1;}
  @media (prefers-reduced-motion: reduce){ #matrixCanvas{display:none;} }
  .sidebar-brand{
    padding:18px 16px;
    border-bottom:1px solid var(--border-soft);
    font-family:var(--mono);
    font-size:13px;
    color:var(--text-dim);
    display:flex;
    align-items:center;
    gap:8px;
  }
  .avatar{
    width:34px; height:34px; border-radius:8px;
    object-fit:cover;
    border:1px solid var(--border);
    flex-shrink:0;
  }
  .avatar-hero{
    width:96px; height:96px; border-radius:16px;
    object-fit:cover;
    border:2px solid var(--border);
    box-shadow:0 0 0 4px var(--bg-main), 0 0 30px -8px rgba(201,150,240,.45);
    float:right;
    margin:4px 0 12px 20px;
  }
  @media (max-width:640px){ .avatar-hero{width:72px; height:72px; float:none; margin:0 0 16px;} }
  .brand-dots{display:flex; gap:6px;}
  .brand-dots span{width:10px; height:10px; border-radius:50%; display:inline-block;}
  .brand-dots span:nth-child(1){background:#ff5f57;}
  .brand-dots span:nth-child(2){background:#febc2e;}
  .brand-dots span:nth-child(3){background:#28c840;}

  .explorer-label{
    font-family:var(--mono);
    font-size:11px;
    letter-spacing:.12em;
    color:var(--text-dim);
    padding:16px 16px 8px;
    text-transform:uppercase;
  }
  .file-tree{
    flex:1;
    overflow-y:auto;
    padding-bottom:16px;
  }
  .tree-folder{padding:2px 8px;}
  .folder-head{
    display:flex; align-items:center; gap:6px;
    padding:6px 8px;
    font-family:var(--mono);
    font-size:13px;
    color:var(--text-dim);
  }
  .nav-item{
    display:flex;
    align-items:center;
    gap:9px;
    padding:7px 8px 7px 26px;
    font-family:var(--mono);
    font-size:13px;
    color:var(--text);
    cursor:pointer;
    border-left:2px solid transparent;
    border-radius:0 4px 4px 0;
    transition:background .12s ease, color .12s ease;
    white-space:nowrap;
  }
  .nav-item:hover{background:var(--bg-panel);}
  .nav-item.active{
    background:var(--bg-panel-hi);
    border-left:2px solid var(--purple);
    color:var(--text-bright);
  }
  .nav-item .ext{color:var(--text-dim); margin-left:auto; font-size:11px;}
  .nav-item .dot-icon{width:7px; height:7px; border-radius:50%; flex-shrink:0;}

  .sidebar-footer{
    border-top:1px solid var(--border-soft);
    padding:14px 16px;
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .social-row{display:flex; gap:10px; flex-wrap:wrap;}
  .social-btn{
    width:32px; height:32px;
    display:flex; align-items:center; justify-content:center;
    border:1px solid var(--border);
    border-radius:6px;
    color:var(--text-dim);
    transition:all .15s ease;
  }
  .social-btn:hover{border-color:var(--purple); color:var(--purple); transform:translateY(-2px);}
  .social-btn svg{width:16px; height:16px;}

  .resume-btn{
    display:flex; align-items:center; justify-content:center; gap:8px;
    background:var(--purple);
    color:#0a0c10;
    font-family:var(--mono);
    font-weight:700;
    font-size:12.5px;
    padding:10px 12px;
    border-radius:6px;
    border:none;
    cursor:pointer;
    letter-spacing:.02em;
    transition:transform .12s ease, box-shadow .12s ease;
  }
  .resume-btn:hover{transform:translateY(-2px); box-shadow:0 8px 20px -8px rgba(201,150,240,.6);}

  /* ===== MAIN ===== */
  .main{
    display:flex;
    flex-direction:column;
    min-height:100vh;
  }
  .tabbar{
    display:flex;
    background:var(--bg-sidebar);
    border-bottom:1px solid var(--border);
    overflow-x:auto;
    position:sticky;
    top:0;
    z-index:15;
  }
  .tab{
    font-family:var(--mono);
    font-size:12.5px;
    color:var(--text-dim);
    padding:11px 18px;
    border-right:1px solid var(--border-soft);
    background:var(--bg-sidebar);
    white-space:nowrap;
    cursor:pointer;
    display:flex; align-items:center; gap:7px;
  }
  .tab.active{background:var(--bg-tab-active); color:var(--text-bright); border-bottom:2px solid var(--purple); margin-bottom:-1px;}
  .tab .dot-icon{width:6px; height:6px; border-radius:50%;}

  .content{
    flex:1;
    padding:48px 56px 80px;
    max-width:920px;
  }
  .section{display:none;}
  .section.active{display:block; animation:fadeIn .4s ease;}
  @keyframes fadeIn{from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:translateY(0);}}

  .code-line{
    display:flex;
    gap:20px;
    font-family:var(--mono);
  }
  .line-no{
    color:#30363d;
    font-size:13px;
    user-select:none;
    text-align:right;
    min-width:24px;
    padding-top:2px;
  }
  .comment{color:var(--text-dim); font-style:italic;}
  .kw{color:var(--purple);}
  .str{color:var(--green);}
  .fn{color:var(--blue);}
  .num{color:var(--orange);}
  .tag{color:var(--pink);}

  h1.hero-title{
    font-family:var(--mono);
    font-size:clamp(28px, 4vw, 44px);
    font-weight:700;
    color:var(--text-bright);
    line-height:1.3;
    margin:18px 0 6px;
  }
  .hero-title .kw{font-weight:800;}
  .type-cursor{
    display:inline-block;
    width:10px; height:1.1em;
    background:var(--purple);
    vertical-align:text-bottom;
    animation:blink 1s step-end infinite;
    margin-left:2px;
  }
  @keyframes blink{50%{opacity:0;}}

  .subtitle{
    font-family:var(--mono);
    color:var(--cyan);
    font-size:15px;
    margin-bottom:22px;
  }
  .prose{
    color:var(--text);
    font-size:15.5px;
    max-width:640px;
    margin-bottom:8px;
  }
  .prose b{color:var(--text-bright); font-weight:600;}

  .badge-row{display:flex; gap:10px; flex-wrap:wrap; margin:24px 0 6px;}
  .badge{
    font-family:var(--mono);
    font-size:12px;
    padding:6px 12px;
    border:1px solid var(--border);
    border-radius:20px;
    color:var(--text-dim);
    display:flex; align-items:center; gap:6px;
  }
  .badge .n{color:var(--orange); font-weight:700;}

  .section-heading{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--text-dim);
    margin:0 0 4px;
    display:flex; align-items:center; gap:10px;
  }
  .section-heading::after{content:''; flex:1; height:1px; background:var(--border);}
  .section-title{
    font-family:var(--mono);
    font-size:24px;
    font-weight:700;
    color:var(--text-bright);
    margin-bottom:28px;
  }
  .section-title .kw{color:var(--purple);}
  .section-title .paren{color:var(--text-dim);}

  /* cards */
  .card{
    background:var(--bg-panel);
    border:1px solid var(--border);
    border-radius:10px;
    padding:22px 24px;
    margin-bottom:18px;
    transition:border-color .15s ease, transform .15s ease;
  }
  .card:hover{border-color:#30363d; transform:translateY(-2px);}
  .card-top{display:flex; justify-content:space-between; align-items:flex-start; gap:14px; flex-wrap:wrap;}
  .card-title{font-family:var(--mono); font-weight:700; color:var(--text-bright); font-size:16px;}
  .card-sub{font-family:var(--mono); font-size:12.5px; color:var(--cyan); margin-top:3px;}
  .card-date{font-family:var(--mono); font-size:12px; color:var(--text-dim); white-space:nowrap; padding-top:2px;}
  .card-body{margin-top:10px; color:var(--text); font-size:14.5px;}
  .card-body ul{padding-left:18px; margin-top:6px;}
  .card-body li{margin-bottom:5px;}
  .card-body li::marker{color:var(--purple);}

  .tag-row{display:flex; gap:7px; flex-wrap:wrap; margin-top:14px;}
  .tech-tag{
    font-family:var(--mono);
    font-size:11px;
    padding:4px 9px;
    background:var(--bg-panel-hi);
    border:1px solid var(--border);
    border-radius:5px;
    color:var(--blue);
  }
  .card-links{display:flex; gap:14px; margin-top:14px;}
  .card-link{
    font-family:var(--mono);
    font-size:12.5px;
    color:var(--text-dim);
    display:flex; align-items:center; gap:6px;
    border-bottom:1px dashed var(--border);
  }
  .card-link:hover{color:var(--purple); border-color:var(--purple);}

  /* skills grid */
  .skills-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(230px,1fr));
    gap:16px;
  }
  .skill-cat{
    background:var(--bg-panel);
    border:1px solid var(--border);
    border-radius:10px;
    padding:18px 20px;
  }
  .skill-cat-title{
    font-family:var(--mono); font-size:12px; text-transform:uppercase; letter-spacing:.08em;
    color:var(--orange); margin-bottom:12px;
  }
  .skill-chip-row{display:flex; flex-wrap:wrap; gap:8px;}
  .skill-chip{
    font-family:var(--mono); font-size:12.5px;
    padding:5px 10px;
    border-radius:6px;
    background:var(--bg-panel-hi);
    border:1px solid var(--border);
    color:var(--text);
  }

  /* stats */
  .stats-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(140px,1fr));
    gap:14px;
    margin:22px 0 8px;
  }
  .stat-box{
    background:var(--bg-panel);
    border:1px solid var(--border);
    border-radius:10px;
    padding:16px 18px;
    text-align:left;
  }
  .stat-num{font-family:var(--mono); font-size:26px; font-weight:800; color:var(--green);}
  .stat-label{font-family:var(--mono); font-size:11.5px; color:var(--text-dim); margin-top:4px;}

  .bar-row{display:flex; align-items:center; gap:12px; margin-bottom:10px;}
  .bar-label{font-family:var(--mono); font-size:12.5px; color:var(--text); width:80px; flex-shrink:0;}
  .bar-track{flex:1; height:8px; background:var(--bg-panel-hi); border-radius:4px; overflow:hidden;}
  .bar-fill{height:100%; border-radius:4px;}
  .bar-count{font-family:var(--mono); font-size:11.5px; color:var(--text-dim); width:70px; text-align:right;}

  .badge-pill{
    display:inline-flex; align-items:center; gap:8px;
    background:var(--bg-panel-hi);
    border:1px solid var(--border);
    padding:8px 14px;
    border-radius:20px;
    font-family:var(--mono);
    font-size:12.5px;
    margin:4px 8px 4px 0;
  }

  /* contact */
  .contact-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(220px,1fr));
    gap:14px;
    margin-top:24px;
  }
  .contact-card{
    background:var(--bg-panel);
    border:1px solid var(--border);
    border-radius:10px;
    padding:18px 20px;
    display:flex; align-items:center; gap:14px;
    transition:border-color .15s ease, transform .15s ease;
  }
  .contact-card:hover{border-color:var(--purple); transform:translateY(-2px);}
  .contact-icon{
    width:38px; height:38px; border-radius:8px;
    background:var(--bg-panel-hi);
    display:flex; align-items:center; justify-content:center;
    color:var(--purple); flex-shrink:0;
  }
  .contact-icon svg{width:18px; height:18px;}
  .contact-label{font-family:var(--mono); font-size:11px; color:var(--text-dim); text-transform:uppercase; letter-spacing:.06em;}
  .contact-value{font-family:var(--mono); font-size:13.5px; color:var(--text-bright); margin-top:2px; word-break:break-word;}

  .terminal-box{
    background:var(--bg-void);
    border:1px solid var(--border);
    border-radius:10px;
    padding:20px 22px;
    font-family:var(--mono);
    font-size:13px;
    margin-top:26px;
    color:var(--green);
  }
  .terminal-box .p{color:var(--blue);}
  .terminal-box .c{color:var(--text-dim);}

  /* interactive terminal */
  .live-terminal{
    background:var(--bg-void);
    border:1px solid var(--border);
    border-radius:10px;
    padding:16px 18px;
    font-family:var(--mono);
    font-size:13px;
    margin-top:24px;
    box-shadow:0 0 0 1px rgba(201,150,240,0.04);
  }
  .live-terminal-head{
    display:flex; justify-content:space-between; align-items:center;
    margin-bottom:12px; color:var(--text-dim); font-size:11.5px;
  }
  .live-terminal-out{
    max-height:170px;
    overflow-y:auto;
    margin-bottom:8px;
  }
  .live-terminal-out div{margin-bottom:5px; color:var(--text);}
  .live-terminal-out .p{color:var(--blue);}
  .live-terminal-out .g{color:var(--green);}
  .live-terminal-out .pu{color:var(--purple);}
  .live-terminal-out .er{color:var(--red);}
  .live-terminal-in{display:flex; align-items:center; gap:8px; border-top:1px solid var(--border-soft); padding-top:10px;}
  .live-terminal-in .p{color:var(--blue); white-space:nowrap;}
  .live-terminal-in input{
    flex:1; background:transparent; border:none; outline:none;
    color:var(--text-bright); font-family:var(--mono); font-size:13px;
    caret-color:var(--purple);
  }
  .live-terminal-in input::placeholder{color:var(--text-dim);}

  .count-up{font-variant-numeric:tabular-nums;}

  .platform-label{
    display:flex; align-items:center; gap:10px;
    font-family:var(--mono); font-size:12.5px;
    color:var(--text-dim);
    margin-bottom:8px;
  }
  .platform-icon{
    width:26px; height:26px; border-radius:6px;
    background:var(--bg-panel-hi);
    border:1px solid var(--border);
    display:flex; align-items:center; justify-content:center;
    flex-shrink:0;
  }
  .platform-icon svg{width:14px; height:14px;}
  .platform-icon.lc{color:var(--orange);}
  .platform-icon.gfg{color:var(--green);}
  .platform-icon.gh{color:var(--text-bright);}
  .platform-label b{color:var(--text-bright); font-weight:600;}

  /* status bar */
  .statusbar{
    background:var(--purple);
    color:#0a0c10;
    font-family:var(--mono);
    font-size:11.5px;
    font-weight:600;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:6px 18px;
    position:sticky;
    bottom:0;
    z-index:15;
  }
  .statusbar-left, .statusbar-right{display:flex; gap:18px; align-items:center;}

  .edu-timeline{position:relative; padding-left:26px;}
  .edu-timeline::before{content:''; position:absolute; left:6px; top:6px; bottom:6px; width:2px; background:var(--border);}
  .edu-item{position:relative; margin-bottom:22px;}
  .edu-item::before{
    content:''; position:absolute; left:-26px; top:5px;
    width:12px; height:12px; border-radius:50%;
    background:var(--bg-main); border:2px solid var(--purple);
  }

  /* mobile */
  .menu-toggle{display:none;}
  @media (max-width: 860px){
    .app{grid-template-columns:1fr;}
    .sidebar{
      position:fixed; left:0; top:0; height:100vh; width:250px;
      transform:translateX(-100%);
      transition:transform .25s ease;
    }
    .sidebar.open{transform:translateX(0);}
    .menu-toggle{
      display:flex; align-items:center; gap:8px;
      font-family:var(--mono); font-size:12.5px;
      color:var(--text); background:var(--bg-sidebar);
      border:1px solid var(--border); border-radius:6px;
      padding:8px 12px; margin:10px 10px 0; cursor:pointer;
      width:fit-content;
    }
    .content{padding:24px 20px 70px;}
    .overlay{display:none; position:fixed; inset:0; background:rgba(0,0,0,.5); z-index:19;}
    .overlay.show{display:block;}
  }