:root{
  --bg0:#050914;
  --bg1:#07122A;
  --card: rgba(255,255,255,0.08);
  --card2: rgba(255,255,255,0.10);
  --stroke: rgba(255,255,255,0.14);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);

  --accent:#48b7ff;
  --accent2:#8f7bff;
  --ok:#2dd4bf;
  --warn:#fbbf24;
  --bad:#fb7185;

  --radius: 18px;
  --shadow: 0 20px 60px rgba(0,0,0,0.45);
  --shadow2: 0 10px 30px rgba(0,0,0,0.35);

  --max: 1200px;
  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

[data-theme="light"]{
  --bg0:#f7fbff;
  --bg1:#eaf3ff;
  --card: rgba(255,255,255,0.75);
  --card2: rgba(255,255,255,0.85);
  --stroke: rgba(10,20,40,0.10);
  --text: rgba(10,20,40,0.92);
  --muted: rgba(10,20,40,0.62);
  --shadow: 0 20px 60px rgba(10,20,40,0.18);
  --shadow2: 0 10px 30px rgba(10,20,40,0.12);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 900px at 20% 10%, var(--bg1), var(--bg0));
  overflow-x:hidden;
}

/* Background */
.bg{position:fixed; inset:0; z-index:-3; pointer-events:none;}
.bg-gradient{
  position:absolute; inset:-20%;
  background:
    radial-gradient(900px 700px at 12% 18%, rgba(72,183,255,0.22), transparent 55%),
    radial-gradient(900px 700px at 85% 20%, rgba(143,123,255,0.20), transparent 55%),
    radial-gradient(900px 700px at 50% 85%, rgba(45,212,191,0.14), transparent 55%);
  filter: blur(0px);
  animation: drift 14s ease-in-out infinite alternate;
}
.bg-noise{
  position:absolute; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='.18'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity:0.15;
}
.bg-blob{
  position:absolute; width:460px; height:460px; border-radius: 50%;
  filter: blur(30px);
  opacity:0.22;
  transform: translate3d(0,0,0);
}
.blob-a{left:-120px; top:220px; background: linear-gradient(135deg, var(--accent), transparent);}
.blob-b{right:-140px; top:120px; background: linear-gradient(135deg, var(--accent2), transparent);}

@keyframes drift{
  from{transform: translateY(-6px) scale(1);}
  to{transform: translateY(12px) scale(1.03);}
}

/* Glass */
.glass{
  background: var(--card);
  border:1px solid var(--stroke);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow2);
}

/* Topbar */
.topbar{
  position: sticky;
  top:0;
  z-index: 50;
  padding: 14px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin: 12px auto 0;
  width: min(var(--max), calc(100% - 24px));
  border-radius: 20px;
}
.brand{display:flex; gap:12px; align-items:center}
.brand-dot{
  width:12px; height:12px; border-radius:50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 20px rgba(72,183,255,0.45);
}
.brand-title{font-weight:800; letter-spacing:0.2px}
.brand-sub{font-size:12px; color:var(--muted); margin-top:2px}
.topbar-right{display:flex; gap:10px; align-items:center}

.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding: 10px 12px;
  border-radius: 12px;
  border:1px solid var(--stroke);
  background: rgba(255,255,255,0.08);
  color: var(--text);
  text-decoration:none;
  cursor:pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover{transform: translateY(-1px); box-shadow: 0 0 28px rgba(72,183,255,0.18);}
.btn:active{transform: translateY(0px) scale(0.99);}
.btn-ghost{background: rgba(255,255,255,0.03);}
.i{opacity:0.9}

/* Layout */
.layout{
  width: min(var(--max), calc(100% - 24px));
  margin: 14px auto 0;
  display:grid;
  grid-template-columns: 280px 1fr;
  gap: 14px;
  align-items:start;
  padding-bottom: 24px;
}

/* Dock */
.dock{
  position: sticky;
  top: 86px;
  border-radius: 22px;
  padding: 14px;
  overflow:hidden;
}
.dock-profile{display:flex; gap:12px; align-items:center; padding: 8px 6px 14px;}
.avatar{
  width: 52px; height: 52px; border-radius: 16px;
  object-fit: cover;
  border: 1px solid var(--stroke);
}
.dock-name{font-weight:800}
.dock-role{font-size:12px; color:var(--muted); margin-top:2px}

.dock-nav{display:flex; flex-direction:column; gap:8px; padding: 8px 4px;}
.dock-link{
  display:flex; align-items:center; gap:12px;
  padding: 12px 12px;
  border-radius: 16px;
  text-decoration:none;
  color: var(--text);
  border:1px solid transparent;
  transition: background .18s ease, transform .18s ease, border-color .18s ease;
  position:relative;
}
.dock-link:hover{
  background: rgba(255,255,255,0.06);
  transform: translateX(2px);
  border-color: rgba(72,183,255,0.18);
}
.dock-link.active{
  background: linear-gradient(135deg, rgba(72,183,255,0.18), rgba(143,123,255,0.12));
  border-color: rgba(72,183,255,0.30);
  box-shadow: 0 0 28px rgba(72,183,255,0.12);
}
.dock-ic{
  width: 34px; height:34px; border-radius: 14px;
  display:grid; place-items:center;
  background: rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.10);
}
.dock-txt{font-weight:600}

.dock-footer{margin-top: 10px; display:flex; gap:10px; align-items:center; justify-content:space-between; padding: 8px 6px 0;}
.scroll-track{
  height: 68px; width: 10px; border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  overflow:hidden;
}
.scroll-indicator{
  width:100%;
  height: 0%;
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  border-radius: 999px;
  box-shadow: 0 0 22px rgba(72,183,255,0.35);
  transition: height .12s linear;
}

/* Collapsed dock */
.dock.is-collapsed .dock-meta,
.dock.is-collapsed .dock-txt,
.dock.is-collapsed .dock-footer .hide-sm{
  display:none;
}
.dock.is-collapsed{padding: 14px 10px;}
.dock.is-collapsed .dock-link{justify-content:center;}
.dock.is-collapsed .dock-profile{justify-content:center;}
.dock.is-collapsed .avatar{width:46px; height:46px; border-radius: 14px;}

/* Main */
.main{min-height: 72vh;}
.page{
  border-radius: 24px;
  padding: 18px;
  position: relative;
  overflow:hidden;
}
.page-loading{
  display:none;
  position:absolute;
  inset:0;
  background: rgba(0,0,0,0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:10px;
}
.spinner{
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.22);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
@keyframes spin {to{transform: rotate(360deg);}}

.page-content{padding: 10px;}
.muted{color: var(--muted);}

/* Sections */
.section{
  padding: 10px;
  animation: fadeUp .35s ease both;
}
@keyframes fadeUp{
  from{opacity:0; transform: translateY(10px);}
  to{opacity:1; transform: translateY(0);}
}
.h1{
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  letter-spacing: -0.6px;
  margin: 8px 0 6px;
}
.h2{
  font-size: 18px;
  color: var(--muted);
  margin: 0 0 18px;
}
.grid-2{display:grid; grid-template-columns: 1.2fr 1fr; gap:14px;}
.grid-3{display:grid; grid-template-columns: repeat(3, 1fr); gap:12px;}
.card{
  background: var(--card2);
  border:1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow2);
  padding: 16px;
}
.card:hover{
  transform: translateY(-2px);
  transition: transform .18s ease, box-shadow .18s ease;
  box-shadow: 0 0 40px rgba(72,183,255,0.12);
}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  font-size: 12px;
  color: var(--muted);
}
.kpi{
  display:flex; gap:10px; flex-wrap:wrap; margin-top: 10px;
}
.kpi .pill{
  padding: 8px 10px;
  border-radius: 12px;
  border:1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  font-size: 12px;
}

.hero-img{
  width:100%;
  border-radius: 22px;
  border:1px solid var(--stroke);
  overflow:hidden;
  box-shadow: var(--shadow);
  min-height: 360px;
  background-size: cover;
  background-position:center;
  transform: translate3d(0,0,0);
}
.hero-img img{width:100%; height:100%; object-fit:cover; display:block;}

.typing{
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip:text;
  background-clip:text;
  color: transparent;
}

/* Timeline */
.timeline{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.timeline .item{position:relative;}
.row{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
}
.sep{opacity:0.35; margin:0 8px}

/* Forms */
.field{display:flex; flex-direction:column; gap:8px; margin-bottom:12px;}
.input, .textarea{
  width:100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  outline:none;
}
.input:focus, .textarea:focus{
  border-color: rgba(72,183,255,0.35);
  box-shadow: 0 0 0 4px rgba(72,183,255,0.12);
}
.textarea{min-height: 140px; resize: vertical;}
.form-grid{display:grid; grid-template-columns: 1fr 1fr; gap:12px;}
.note{font-size:12px; color: var(--muted);}

/* FAB */
.fab-stack{
  position: fixed;
  right: 18px;
  bottom: 18px;
  display:flex;
  flex-direction:column;
  gap:10px;
  z-index: 60;
}
.fab{
  width: 48px; height:48px;
  border-radius: 16px;
  display:grid;
  place-items:center;
  border:1px solid var(--stroke);
  color: var(--text);
  cursor:pointer;
  text-decoration:none;
  transition: transform .18s ease;
}
.fab:hover{transform: translateY(-2px);}

/* Footer */
.footer{padding: 22px 0 30px;}
.footer-inner{
  width:min(var(--max), calc(100% - 24px));
  margin: 0 auto;
  display:flex;
  justify-content:space-between;
  gap:10px;
  flex-wrap:wrap;
  color: var(--muted);
  font-size: 13px;
}

/* Reveal on scroll */
.reveal{opacity:0; transform: translateY(10px); transition: opacity .55s ease, transform .55s ease;}
.reveal.is-visible{opacity:1; transform: translateY(0);}

/* Responsive */
@media (max-width: 980px){
  .layout{grid-template-columns: 1fr; }
  .dock{position: relative; top:0;}
  .grid-2{grid-template-columns: 1fr;}
  .timeline{grid-template-columns: 1fr;}
}
@media (max-width: 560px){
  .hide-sm{display:none;}
  .form-grid{grid-template-columns: 1fr;}
}

/* =========================
   3D CERTIFICATION CARDS
========================= */

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  perspective: 1400px;
}

.cert-card {
  position: relative;
  height: 200px;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(.4,.2,.2,1);
  cursor: pointer;
  will-change: transform;
}

.cert-card.is-flipped {
  transform: rotateY(180deg);
}

.cert-face {
  position: absolute;
  inset: 0;
  border-radius: 18px;
  padding: 18px;
  backface-visibility: hidden;
  background: linear-gradient(
    180deg,
    rgba(255,255,255,0.08),
    rgba(255,255,255,0.02)
  );
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}

.cert-front {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cert-back {
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Hover (Desktop) */
@media (hover: hover) {
  .cert-card:hover {
    transform: rotateY(180deg);
  }
}

/* Badge */
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.25);
}

.cert-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.cert-title {
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
}

.cert-meta {
  font-size: 13px;
  opacity: 0.75;
}

/* CTA */
.cert-btn {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #000;
  font-weight: 800;
  text-align: center;
}

.cert-card::after {
  content: "";
  position: absolute;
  inset: -12px;
  border-radius: 24px;
  background: radial-gradient(
    50% 60% at 50% 60%,
    rgba(72,183,255,0.18),
    transparent 70%
  );
  opacity: 0;
  transition: opacity .4s ease;
  pointer-events: none;
}

.cert-card:hover::after,
.cert-card.is-flipped::after {
  opacity: 1;
}




/* ===== Skills vs Certifications layout ===== */
.cert-layout{
  grid-template-columns: 0.85fr 1.65fr;
}

@media (max-width: 980px){
  .cert-layout{
    grid-template-columns: 1fr;
  }
}

/* Skills compact height */
.skills-card{
  padding: 14px;
}

#skillsGrid .card{
  padding: 10px;
}

#skillsGrid .card > div:last-child{
  margin-top: 6px;
}


/* ===== Certificate image preview ===== */
.cert-card.show-image .cert-back > *:not(.cert-image-wrap){
  filter: blur(6px);
  opacity: 0.25;
  pointer-events: none;
}

.cert-image-wrap{
  position:absolute;
  inset:10px;
  border-radius:14px;
  overflow:hidden;
  z-index:6;
  background:#000;
  box-shadow: var(--shadow);
  animation: fadeUp .25s ease both;
}

.cert-image-wrap img{
  width:100%;
  height:100%;
  object-fit:contain;
  background:#000;
}

.cert-close{
  position:absolute;
  top:10px;
  right:10px;
  border:none;
  background:rgba(0,0,0,0.65);
  color:#fff;
  border-radius:10px;
  padding:6px 10px;
  cursor:pointer;
}