:root{
  /* base */
  --bg: #05060a;
  --fg: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --muted2: rgba(255,255,255,.56);

  /* surfaces */
  --topbar: rgba(10,12,18,.55);
  --surface: rgba(12,14,20,.58);
  --surface2: rgba(12,14,20,.55);
  --surface3: rgba(12,14,20,.72);

  /* ui */
  --border: rgba(255,255,255,.12);
  --shadow: 0 20px 80px rgba(0,0,0,.55);
  --shadowSoft: 0 18px 70px rgba(0,0,0,.25);

  --chipbg: rgba(255,255,255,.06);
  --chipbgHover: rgba(255,255,255,.085);
  --field: rgba(255,255,255,.05);

  --progressTrack: rgba(255,255,255,.06);

  /* accents */
  --accent1: rgba(120,80,255,1);
  --accent2: rgba(0,210,255,1);

  --r: 22px;
  --max: 1120px;
}

body.light{
  --bg: #f6f7fb;
  --fg: rgba(10,10,14,.92);
  --muted: rgba(10,10,14,.70);
  --muted2: rgba(10,10,14,.58);

  --topbar: rgba(255,255,255,.68);
  --surface: rgba(255,255,255,.78);
  --surface2: rgba(255,255,255,.70);
  --surface3: rgba(255,255,255,.86);

  --border: rgba(0,0,0,.12);
  --shadow: 0 20px 70px rgba(0,0,0,.12);
  --shadowSoft: 0 18px 55px rgba(0,0,0,.10);

  --chipbg: rgba(0,0,0,.04);
  --chipbgHover: rgba(0,0,0,.06);
  --field: rgba(0,0,0,.03);

  --progressTrack: rgba(0,0,0,.06);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(1200px 900px at 30% 20%, rgba(120,80,255,.14), transparent 55%),
    radial-gradient(900px 700px at 80% 40%, rgba(0,210,255,.11), transparent 60%),
    var(--bg);
  color: var(--fg);
  overflow-x:hidden;
}

/* 3D canvas */
#bg{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:-2;
}

/* Subtle film grain */
.noise{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  opacity:.08;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}

/* Scroll progress */
.scroll-progress{
  position:fixed;
  top:0; left:0; right:0;
  height:2px;
  background: var(--progressTrack);
  z-index:50;
}
.scroll-progress span{
  display:block;
  height:100%;
  width:0%;
  background: linear-gradient(90deg, rgba(120,80,255,.9), rgba(0,210,255,.9));
}

/* Topbar */
.topbar{
  position:fixed;
  top:14px;
  left:50%;
  transform:translateX(-50%);
  width:min(var(--max), calc(100% - 28px));
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 14px;
  border-radius:999px;
  background: var(--topbar);
  border:1px solid var(--border);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 70px rgba(0,0,0,.25);
  z-index:40;
}

.brand{
  display:inline-flex;
  gap:10px;
  align-items:center;
  text-decoration:none;
  color: var(--fg);
  font-weight:700;
  letter-spacing:.2px;
}
.brand-dot{
  width:10px; height:10px;
  border-radius:999px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  box-shadow: 0 0 0 6px rgba(120,80,255,.14);
}

.nav{
  display:flex;
  gap:14px;
  align-items:center;
}

.nav a{
  text-decoration:none;
  color: var(--muted);
  font-weight:500;
  font-size:14px;
  padding:8px 10px;
  border-radius:999px;
  transition:.2s ease;
}

.nav a:hover{
  background: var(--chipbg);
  color: var(--fg);
}

.nav-cta{
  border:1px solid var(--border);
  background: var(--chipbg);
}

.nav a.active{
  background: var(--chipbg);
  color: var(--fg);
  border: 1px solid var(--border);
}

/* If the active link should look like CTA (button) */
.nav a.active.is-cta{
  background: linear-gradient(135deg, rgba(120,80,255,.95), rgba(0,210,255,.90));
  border-color: rgba(255,255,255,.10);
  color: rgba(10,10,10,.95);
}

/* Theme button */
.theme-btn{
  width:42px; height:42px;
  border-radius:999px;
  background: var(--chipbg);
  border:1px solid var(--border);
  color: var(--fg);
  cursor:pointer;
  display:grid;
  place-items:center;
  transition: transform .12s ease, background .2s ease;
}
.theme-btn:hover{
  transform: translateY(-1px);
  background: var(--chipbgHover);
}
.theme-icon{ font-size:16px; line-height:1; }

/* Mobile menu btn */
.menu-btn{
  display:none;
  width:42px; height:42px;
  border-radius:999px;
  background: var(--chipbg);
  border:1px solid var(--border);
  cursor:pointer;
}
.menu-btn span{
  display:block;
  width:18px;
  height:2px;
  background: var(--fg);
  margin:4px auto;
  border-radius:999px;
  opacity:.85;
}

/* Mobile menu */
.mobile-menu{
  position:fixed;
  inset:0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(10px);
  z-index:45;
  opacity:0;
  pointer-events:none;
  transition:.2s ease;
}
body.light .mobile-menu{ background: rgba(0,0,0,.30); }

.mobile-menu.open{
  opacity:1;
  pointer-events:auto;
}
.mobile-menu-inner{
  position:absolute;
  top:80px;
  left:50%;
  transform:translateX(-50%);
  width:min(var(--max), calc(100% - 28px));
  border-radius: var(--r);
  background: var(--surface3);
  border:1px solid var(--border);
  padding:14px;
  display:grid;
  gap:10px;
}
.mobile-menu a{
  color: var(--fg);
  text-decoration:none;
  padding:12px 12px;
  border-radius:14px;
  background: var(--chipbg);
  border:1px solid var(--border);
}
.mobile-menu a:hover{ background: var(--chipbgHover); }
.mobile-menu a.ghost{ background: transparent; }

/* Layout */
.page{
  width:min(var(--max), calc(100% - 28px));
  margin:0 auto;
  padding-top:110px;
  padding-bottom:20px;
}

/* HERO */
.hero{
  display:grid;
  grid-template-columns: 1.2fr .9fr;
  gap:26px;
  padding:34px 0 12px;
  align-items:start;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--border);
  background: var(--chipbg);
  color: var(--muted);
  font-size:13px;
  width: fit-content;
}
.ping{
  width:8px; height:8px;
  border-radius:999px;
  background: var(--accent2);
  box-shadow: 0 0 0 6px rgba(0,210,255,.18);
}

.hero h1{
  margin:14px 0 12px;
  font-size: clamp(34px, 4vw, 56px);
  line-height:1.05;
  letter-spacing:-1.2px;
}
.gradient{
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.lead{
  margin:0;
  color: var(--muted);
  font-size:16px;
  line-height:1.7;
  max-width:58ch;
}

.hero-actions{
  margin-top:18px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:11px 14px;
  border-radius:14px;
  border:1px solid var(--border);
  background: var(--chipbg);
  color: var(--fg);
  text-decoration:none;
  font-weight:600;
  cursor:pointer;
  transition: transform .12s ease, background .2s ease;
}
.btn:hover{
  transform: translateY(-1px);
  background: var(--chipbgHover);
}
.btn.primary{
  background: linear-gradient(135deg, rgba(120,80,255,.95), rgba(0,210,255,.90));
  border-color: rgba(255,255,255,.10);
  color: rgba(10,10,10,.95);
}
.btn.small{ padding:9px 12px; border-radius:12px; font-size:13px; }
.btn.ghost{ background: transparent; }

.chips{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.chip{
  padding:7px 10px;
  border-radius:999px;
  background: var(--chipbg);
  border:1px solid var(--border);
  color: var(--muted);
  font-size:12px;
}

/* Glass card */
.glass-card{
  border-radius: var(--r);
  background: var(--surface);
  border:1px solid var(--border);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  padding:18px;
}

.card-top{
  display:flex;
  gap:14px;
  align-items:center;
  margin-bottom:14px;
}

.avatar{
  width:54px;
  height:54px;
  border-radius:16px;
  background: linear-gradient(135deg, rgba(120,80,255,.9), rgba(0,210,255,.85));
  display:grid;
  place-items:center;
  font-weight:800;
  color: rgba(10,10,10,.92);
}
.avatar.avatar-img{
  padding:0;
  overflow:hidden;
  border:1px solid var(--border);
  background: var(--chipbg);
}
.avatar.avatar-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.glass-card h2{
  margin:0;
  font-size:18px;
  letter-spacing:-.4px;
}
.glass-card p{
  margin:4px 0 0;
  color: var(--muted);
  font-size:13px;
}

.card-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:10px;
  margin-top:14px;
}

.mini{
  padding:12px;
  border-radius:16px;
  background: var(--chipbg);
  border:1px solid var(--border);
}
.mini-k{ margin:0; font-size:12px; color: var(--muted2); }
.mini-v{ margin:6px 0 0; font-size:13px; color: var(--fg); }

.card-links{
  display:flex;
  gap:12px;
  margin-top:14px;
}
.link{
  flex:1;
  text-decoration:none;
  color: var(--fg);
  padding:10px 12px;
  border-radius:14px;
  background: var(--chipbg);
  border:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.link:hover{ background: var(--chipbgHover); }

.hint{
  margin-top:12px;
  display:inline-flex;
  gap:10px;
  align-items:center;
  color: var(--muted);
  font-size:12px;
}
.hint .dot{
  width:8px; height:8px;
  border-radius:999px;
  background: var(--accent1);
  box-shadow: 0 0 0 6px rgba(120,80,255,.18);
}

/* Sections */
.section{
  margin-top:70px;
  padding-top:24px;
}
.section-head h3{
  margin:0 0 10px;
  font-size:22px;
  letter-spacing:-.4px;
}
.section-head p{
  margin:0;
  color: var(--muted);
  line-height:1.7;
  max-width:80ch;
}

.grid-2{
  margin-top:18px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:16px;
}

.panel{
  border-radius: var(--r);
  background: var(--surface2);
  border:1px solid var(--border);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadowSoft);
  padding:18px;
}
.panel h4{ margin:0 0 10px; letter-spacing:-.3px; }

.muted{ color: var(--muted); }
.tiny{ font-size:12px; color: var(--muted2); }

.list{
  margin:10px 0 0;
  padding-left:18px;
  color: var(--fg);
  line-height:1.65;
}
.list.compact li{ margin:6px 0; }

.skills-bubbles{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:10px;
}
.bubble{
  padding:10px 12px;
  border-radius:999px;
  background: var(--chipbg);
  border:1px solid var(--border);
  font-weight:600;
  font-size:13px;
  color: var(--fg);
}

.callout{
  margin-top:14px;
  border-radius:18px;
  padding:14px;
  border:1px dashed var(--border);
  background: var(--field);
}
.callout-title{
  margin:0;
  font-weight:700;
  letter-spacing:-.2px;
}
.callout p{
  margin:6px 0 0;
  color: var(--muted);
  line-height:1.6;
}

/* Skill cards */
.cards{
  margin-top:18px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}
.skill-card, .cert-card{
  border-radius: var(--r);
  background: var(--surface2);
  border:1px solid var(--border);
  backdrop-filter: blur(16px);
  padding:16px;
}
.skill-card h4{ margin:0 0 10px; }

.tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tags span{
  font-size:12px;
  padding:7px 9px;
  border-radius:999px;
  background: var(--chipbg);
  border:1px solid var(--border);
  color: var(--muted);
}
.tags.small span{ font-size:11px; padding:6px 8px; }

/* Timeline */
.timeline{
  margin-top:18px;
  display:grid;
  gap:14px;
}
.time-item{
  position:relative;
  border-radius: var(--r);
  background: var(--surface2);
  border:1px solid var(--border);
  backdrop-filter: blur(16px);
  padding:16px 16px 16px 54px;
}
.time-dot{
  position:absolute;
  left:18px;
  top:22px;
  width:12px; height:12px;
  border-radius:999px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  box-shadow: 0 0 0 8px rgba(120,80,255,.12);
}
.time-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.time-content h4{ margin:0; letter-spacing:-.3px; }

.pill{
  font-size:12px;
  padding:7px 10px;
  border-radius:999px;
  background: var(--chipbg);
  border:1px solid var(--border);
  color: var(--muted);
}

/* Education */
.edu-grid{
  margin-top:18px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}
.edu-card{
  border-radius: var(--r);
  background: var(--surface2);
  border:1px solid var(--border);
  backdrop-filter: blur(16px);
  padding:16px;
}
.edu-card h4{ margin:0 0 8px; }

/* Certs */
.cert-card{
  display:flex;
  gap:14px;
  align-items:flex-start;
}
.cert-icon{
  width:40px; height:40px;
  border-radius:16px;
  background: var(--chipbg);
  border:1px solid var(--border);
  display:grid;
  place-items:center;
  font-size:18px;
  color: var(--fg);
}

/* Projects */
.project-grid{
  margin-top:18px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}
.project-card{
  border-radius: var(--r);
  background: var(--surface2);
  border:1px solid var(--border);
  backdrop-filter: blur(16px);
  padding:16px;
}
.project-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.project-card h4{ margin:0; }
.project-actions{
  margin-top:12px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

/* Contact */
.contact-list{
  display:grid;
  gap:10px;
  margin-top:10px;
}
.contact-item{
  display:grid;
  grid-template-columns: 120px 1fr;
  gap:12px;
  padding:12px;
  border-radius:16px;
  background: var(--chipbg);
  border:1px solid var(--border);
  color: var(--fg);
  text-decoration:none;
}
.contact-item:hover{ background: var(--chipbgHover); }
.contact-item .k{ color: var(--muted2); font-size:12px; }
.contact-item .v{ color: var(--fg); font-weight:600; font-size:13px; }

form label{
  display:grid;
  gap:8px;
  margin-top:10px;
  color: var(--muted);
  font-size:13px;
}
input, textarea{
  width:100%;
  border-radius:14px;
  padding:12px 12px;
  border:1px solid var(--border);
  background: var(--field);
  color: var(--fg);
  outline:none;
}
input:focus, textarea:focus{
  border-color: rgba(0,210,255,.45);
  box-shadow: 0 0 0 6px rgba(0,210,255,.10);
}

/* Footer */
.footer{
  margin-top:70px;
  text-align:center;
  color: var(--muted2);
  font-size:13px;
}

/* Reveal animation */
.reveal{
  opacity:0;
  transform: translateY(14px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.show{
  opacity:1;
  transform: translateY(0);
}

/* Toast */
.toast{
  position:fixed;
  left:50%;
  bottom:20px;
  transform: translateX(-50%);
  padding:10px 12px;
  border-radius:999px;
  background: var(--surface3);
  border:1px solid var(--border);
  color: var(--fg);
  box-shadow: 0 18px 70px rgba(0,0,0,.25);
  z-index:60;
  opacity:0;
  pointer-events:none;
  transition:.2s ease;
}
.toast.show{ opacity:1; }

/* Responsive */
@media (max-width: 980px){
  .hero{ grid-template-columns:1fr; }
  .cards{ grid-template-columns:1fr 1fr; }
  .edu-grid{ grid-template-columns:1fr; }
  .project-grid{ grid-template-columns:1fr; }
  .grid-2{ grid-template-columns:1fr; }
  .nav{ display:none; }
  .menu-btn{ display:inline-block; }
  .card-grid{ grid-template-columns:1fr; }
}

.hero-title {
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1.05;
  margin: 0 0 16px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #111;
  color: #fff;
  padding: 14px 22px;
  border-radius: 12px;
  opacity: 0;
  transform: translateY(20px);
  transition: 0.3s ease;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  z-index: 9999;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.lang-switch{
  display:flex;
  gap:8px;
  align-items:center;
  margin-left:14px;
}

.lang-btn{
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  color:var(--text, #fff);
  text-decoration:none;
  opacity:.85;
  transition:.2s ease;
}

.lang-btn:hover{
  opacity:1;
  transform:translateY(-1px);
}

.lang-btn.active{
  opacity:1;
  border-color: rgba(255,255,255,.35);
  background: rgba(255,255,255,.08);
}