:root{
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-pill: 999px;
    --maxw: 780px;
    --ease: cubic-bezier(.4,0,.2,1);
  }

  [data-theme="dark"]{
    --bg: #0a1413;
    --bg-2: #0c1917;
    --panel: #0f1e1c;
    --panel-border: rgba(255,255,255,.07);
    --ink: #eef6f3;
    --ink-soft: #a9beb9;
    --ink-faint: #6d8781;
    --accent: #3ddc97;
    --accent-2: #22c3d6;
    --accent-ink: #05231a;
    --chip-a-bg: rgba(61,220,151,.12); --chip-a-fg:#5fe8ac; --chip-a-bd: rgba(61,220,151,.28);
    --chip-b-bg: rgba(34,195,214,.12); --chip-b-fg:#5fd7e6; --chip-b-bd: rgba(34,195,214,.28);
    --chip-c-bg: rgba(167,139,250,.14); --chip-c-fg:#c3b1fb; --chip-c-bd: rgba(167,139,250,.3);
    --dot: rgba(255,255,255,.05);
    --glow: radial-gradient(600px circle at 15% -10%, rgba(61,220,151,.10), transparent 60%);
    --shadow-panel: 0 1px 0 rgba(255,255,255,.03) inset, 0 20px 40px -24px rgba(0,0,0,.55);
  }
  [data-theme="light"]{
    --bg: #f5faf8;
    --bg-2: #eef6f2;
    --panel: #ffffff;
    --panel-border: rgba(15,45,38,.08);
    --ink: #12241f;
    --ink-soft: #4c6660;
    --ink-faint: #82988f;
    --accent: #0f9d70;
    --accent-2: #0e8fa6;
    --accent-ink: #f2fbf7;
    --chip-a-bg: rgba(15,157,112,.09); --chip-a-fg:#0d8a63; --chip-a-bd: rgba(15,157,112,.22);
    --chip-b-bg: rgba(14,143,166,.09); --chip-b-fg:#0c7c92; --chip-b-bd: rgba(14,143,166,.22);
    --chip-c-bg: rgba(124,58,237,.08); --chip-c-fg:#7c3aed; --chip-c-bd: rgba(124,58,237,.2);
    --dot: rgba(15,45,38,.06);
    --glow: radial-gradient(600px circle at 15% -10%, rgba(15,157,112,.07), transparent 60%);
    --shadow-panel: 0 1px 0 rgba(255,255,255,.6) inset, 0 20px 40px -28px rgba(20,50,42,.18);
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:
      var(--glow),
      radial-gradient(var(--dot) 1px, transparent 1px) 0 0/22px 22px,
      var(--bg);
    color:var(--ink);
    font-family:'Plus Jakarta Sans', system-ui, sans-serif;
    font-size:16px;
    line-height:1.65;
    transition:background-color .3s var(--ease), color .3s var(--ease);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{margin:0; color:var(--ink); letter-spacing:-0.015em; font-weight:700;}
  a{color:inherit;}
  .mono{font-family:'JetBrains Mono', monospace;}
  ::selection{background:var(--accent);color:var(--accent-ink);}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:.001ms !important; transition-duration:.001ms !important;}
  }

  .gradient-text{
    background:linear-gradient(90deg, var(--accent), var(--accent-2));
    -webkit-background-clip:text; background-clip:text; color:transparent;
  }

  /* ---------- header ---------- */
  .console{
    position:sticky; top:16px; z-index:50;
    max-width:var(--maxw); margin:16px auto 0; padding:0 20px;
  }
  .console-inner{
    display:flex; align-items:center; justify-content:space-between; gap:12px;
    padding:10px 10px 10px 18px;
    background:color-mix(in srgb, var(--panel) 82%, transparent);
    border:1px solid var(--panel-border);
    border-radius:var(--radius-pill);
    backdrop-filter:blur(14px);
    box-shadow:var(--shadow-panel);
  }
  .brand{display:flex; align-items:center; gap:9px; font-weight:700; font-size:15px;}
  .dot{width:7px;height:7px;border-radius:50%; background:var(--accent); box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent); flex-shrink:0;}
  .console-nav{display:flex; gap:22px; font-size:14px; color:var(--ink-soft); font-weight:500;}
  .console-nav a{text-decoration:none; transition:color .2s;}
  .console-nav a:hover{color:var(--ink);}
  .console-controls{display:flex; align-items:center; gap:6px;}
  .toggle-btn{
    font-family:inherit; font-size:13px; font-weight:600;
    background:var(--bg-2); color:var(--ink-soft);
    border:1px solid var(--panel-border);
    border-radius:var(--radius-pill);
    padding:8px 14px;
    cursor:pointer;
    transition:border-color .2s, color .2s, background .2s;
  }
  .toggle-btn:hover{color:var(--ink);}
  .toggle-btn[aria-pressed="true"]{color:var(--accent-ink); background:var(--accent); border-color:var(--accent);}
  @media (max-width: 640px){ .console-nav{display:none;} }

  /* ---------- switch toggles ---------- */
  .switch{
    display:inline-flex; align-items:center; gap:7px;
    background:none; border:none; padding:6px 8px; cursor:pointer;
    font-family:inherit;
  }
  .switch-label{font-size:12px; font-weight:700; color:var(--ink-faint); transition:color .2s;}
  .switch-track{
    position:relative; width:38px; height:22px; border-radius:var(--radius-pill);
    background:var(--bg-2); border:1px solid var(--panel-border);
    transition:background .25s var(--ease), border-color .25s var(--ease);
    flex-shrink:0;
  }
  .switch-thumb{
    position:absolute; top:2px; left:2px; width:16px; height:16px; border-radius:50%;
    background:var(--ink-faint);
    transition:transform .25s var(--ease), background .25s var(--ease);
  }
  .switch[aria-checked="true"] .switch-track{background:linear-gradient(90deg, var(--accent), var(--accent-2)); border-color:transparent;}
  .switch[aria-checked="true"] .switch-thumb{transform:translateX(16px); background:var(--accent-ink);}
  .switch[aria-checked="true"] .switch-label.on{color:var(--ink);}
  .switch[aria-checked="false"] .switch-label.off{color:var(--ink);}
  .switch svg{display:block;}

  /* ---------- layout ---------- */
  main{max-width:var(--maxw); margin:0 auto; padding:0 20px;}
  section{padding:64px 0; scroll-margin-top:90px;}
  .eyebrow{
    display:inline-block;
    font-size:13px; font-weight:600; color:var(--accent);
    background:var(--chip-a-bg); border:1px solid var(--chip-a-bd);
    padding:5px 14px; border-radius:var(--radius-pill);
    margin:0 0 16px;
  }
  h2{font-size:26px; margin-bottom:30px;}
  .panel{
    background:var(--panel); border:1px solid var(--panel-border);
    border-radius:var(--radius-lg); box-shadow:var(--shadow-panel);
    padding:36px;
  }
  @media (max-width:600px){ .panel{padding:24px;} }

  /* ---------- hero ---------- */
  .hero{padding-top:76px; text-align:left;}
  .hero-badge{
    display:inline-flex; align-items:center; gap:8px;
    font-size:13px; font-weight:600; color:var(--ink-soft);
    background:var(--panel); border:1px solid var(--panel-border);
    border-radius:var(--radius-pill); padding:7px 16px 7px 12px;
    margin-bottom:26px;
  }
  .hero h1{font-size:50px; line-height:1.08; margin-bottom:12px;}
  .hero-role{font-size:17px; font-weight:600; margin:0 0 18px;}
  .hero-role .gradient-text{font-weight:700;}
  .hero-sub{color:var(--ink-soft); font-size:17px; max-width:56ch; margin:0 0 34px;}
  .hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:44px;}
  .btn{
    font-family:inherit; font-size:14.5px; font-weight:600;
    text-decoration:none; padding:13px 22px;
    border-radius:var(--radius-pill);
    border:1px solid var(--panel-border);
    transition:transform .2s var(--ease), box-shadow .2s var(--ease), opacity .2s;
    display:inline-block;
  }
  .btn-primary{background:linear-gradient(90deg, var(--accent), var(--accent-2)); color:var(--accent-ink); border:none;}
  .btn-primary:hover{transform:translateY(-2px); box-shadow:0 10px 24px -10px color-mix(in srgb, var(--accent) 50%, transparent);}
  .btn-secondary{color:var(--ink); background:var(--panel);}
  .btn-secondary:hover{transform:translateY(-2px);}

  .focus-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(160px,1fr)); gap:14px;}
  .focus-card{
    background:var(--panel); border:1px solid var(--panel-border);
    border-radius:var(--radius-md); padding:20px; box-shadow:var(--shadow-panel);
  }
  .focus-card .label{font-weight:700; font-size:16px; margin-bottom:4px;}
  .focus-card .sub{font-size:13.5px; color:var(--ink-faint);}
  .focus-card.a .label{color:var(--chip-a-fg);}
  .focus-card.b .label{color:var(--chip-b-fg);}
  .focus-card.c .label{color:var(--chip-c-fg);}
  .focus-tags{display:flex; flex-wrap:wrap; gap:6px; margin-top:12px;}
  .focus-tags span{
    font-size:11.5px; font-weight:600;
    padding:4px 9px; border-radius:var(--radius-pill);
    background:var(--chip-c-bg); color:var(--chip-c-fg); border:1px solid var(--chip-c-bd);
  }

  /* ---------- about ---------- */
  #about p{color:var(--ink-soft); max-width:64ch; font-size:16px;}

  /* ---------- education ---------- */
  .edu-item{display:flex; gap:18px; padding:18px 0; border-top:1px solid var(--panel-border);}
  .edu-item:first-of-type{border-top:none; padding-top:0;}
  .edu-year{
    font-size:13px; font-weight:600; color:var(--ink-faint);
    background:var(--bg-2); border-radius:var(--radius-pill);
    padding:5px 12px; height:fit-content; white-space:nowrap;
  }
  .edu-school{font-weight:700; margin-bottom:3px; font-size:16px;}
  .edu-program{color:var(--ink-soft); font-size:14.5px;}

  /* ---------- certifications ---------- */
  .cert-list{display:flex; flex-direction:column; gap:12px;}
  .cert-item{
    background:var(--bg-2); border:1px solid var(--panel-border);
    border-radius:var(--radius-md);
    padding:16px 20px;
    display:flex; justify-content:space-between; align-items:center; gap:12px; flex-wrap:wrap;
  }
  .cert-name{font-weight:700; margin-bottom:2px;}
  .cert-issuer{color:var(--ink-soft); font-size:14px;}
  .cert-year{
    font-size:13px; font-weight:600; color:var(--accent);
    background:var(--chip-a-bg); border-radius:var(--radius-pill); padding:5px 12px;
  }

  /* ---------- experience timeline ---------- */
  .timeline{position:relative; padding-left:26px;}
  .timeline::before{
    content:""; position:absolute; left:6px; top:6px; bottom:6px; width:2px;
    background:linear-gradient(var(--accent), var(--accent-2));
    opacity:.35; border-radius:2px;
  }
  .tl-item{position:relative; padding-bottom:34px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-item::before{
    content:""; position:absolute; left:-26px; top:5px;
    width:11px; height:11px; border-radius:50%;
    background:var(--bg); border:2px solid var(--accent);
  }
  .tl-date{font-size:13px; font-weight:600; color:var(--accent); margin-bottom:6px;}
  .tl-role{font-weight:700; font-size:17px; margin-bottom:2px;}
  .tl-company{color:var(--ink-soft); font-size:14.5px; margin-bottom:10px;}
  .tl-desc{color:var(--ink-soft); font-size:15px; margin:0; max-width:58ch;}

  /* ---------- skills chips ---------- */
  .skills-group{margin-bottom:26px;}
  .skills-group:last-child{margin-bottom:0;}
  .skills-group h3{font-size:14px; font-weight:700; color:var(--ink-faint); margin-bottom:12px;}
  .chip-row{display:flex; flex-wrap:wrap; gap:9px;}
  .chip{
    font-size:14px; font-weight:500;
    padding:8px 15px; border-radius:var(--radius-pill);
    background:var(--chip-a-bg); color:var(--chip-a-fg); border:1px solid var(--chip-a-bd);
  }
  .skills-group.tools .chip{background:var(--chip-b-bg); color:var(--chip-b-fg); border-color:var(--chip-b-bd);}
  .skills-group.soft .chip{background:var(--chip-c-bg); color:var(--chip-c-fg); border-color:var(--chip-c-bd);}
  .chip a{text-decoration:none; color:inherit;}

  /* ---------- contact ---------- */
  .contact-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(230px,1fr)); gap:14px; margin-top:26px;}
  .contact-card{
    background:var(--bg-2); border:1px solid var(--panel-border);
    border-radius:var(--radius-md); padding:18px 20px;
    text-decoration:none; color:var(--ink);
    display:flex; flex-direction:column; gap:16px;
    transition:transform .2s var(--ease), border-color .2s;
  }
  .contact-card:hover{transform:translateY(-3px); border-color:var(--accent);}
  .cc-top{display:flex; align-items:flex-start; gap:12px;}
  .cc-icon{
    width:38px; height:38px; border-radius:11px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center; color:#fff;
  }
  .cc-icon.email{background:linear-gradient(135deg,#f45c43,#eb3349);}
  .cc-icon.whatsapp{background:#25d366;}
  .cc-icon.linkedin{background:#0a66c2;}
  .cc-titles{flex:1; min-width:0;}
  .cc-title{font-weight:700; font-size:15px;}
  .cc-subtitle{font-size:12.5px; color:var(--ink-faint); margin-top:1px;}
  .cc-arrow{color:var(--ink-faint); flex-shrink:0; margin-top:2px;}
  .cc-bottom{display:flex; align-items:center; justify-content:space-between; gap:10px;}
  .cc-value{font-size:14px; font-weight:500; color:var(--ink-soft); word-break:break-word;}
  .cc-btn{
    font-size:12.5px; font-weight:600; color:var(--ink-soft);
    background:var(--panel); border:1px solid var(--panel-border);
    border-radius:var(--radius-pill); padding:6px 13px; white-space:nowrap;
  }

  footer.foot{
    max-width:var(--maxw); margin:0 auto; padding:32px 20px 48px;
    font-size:13px; color:var(--ink-faint);
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
  }

/* Link affordances apply to mouse, keyboard, and touch navigation. */
a:focus-visible, button:focus-visible { outline:3px solid var(--accent); outline-offset:5px; }
.cert-item { text-decoration:none; cursor:pointer; transition:transform .2s var(--ease),border-color .2s,background .2s; }
.cert-item:hover, .cert-item:focus-visible { transform:translateY(-2px); border-color:var(--accent); background:var(--chip-a-bg); }
.cert-meta { display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.cert-action { color:var(--accent); font-size:13px; font-weight:600; }
.cert-item:hover .cert-action, .cert-item:focus-visible .cert-action { text-decoration:underline; text-underline-offset:4px; }
.section-note { color:var(--ink-soft); margin:-16px 0 24px; font-size:14px; }
.contact-grid { grid-template-columns:1fr; }
.contact-card { flex-direction:row; align-items:center; gap:24px; }
.cc-top { flex:1; align-items:center; min-width:0; }
.cc-bottom { flex:1; min-width:0; }
.contact-card:hover .cc-btn, .contact-card:focus-visible .cc-btn { color:var(--accent); border-color:var(--accent); }
@media(max-width:600px) {
  .contact-card { flex-direction:column; align-items:stretch; gap:16px; }
  .cc-value { overflow-wrap:anywhere; }
  .console-inner { flex-wrap:wrap; border-radius:var(--radius-md); padding:12px; }
  .hero h1 { font-size:40px; }
  .cert-meta { width:100%; justify-content:space-between; }
}