:root{
  --bg0:#F8FAFC;
  --bg1:#EEF2F7;
  --bg2:#E9EEF6;

  --card: rgba(255,255,255,0.03);
  --card2: rgba(255,255,255,0.92);

  --border: rgba(15,23,42,0.12);
  --text:#0B1220;
  --muted: rgba(11,18,32,0.72);
  --muted2: rgba(11,18,32,0.56);

  --accent:#0891B2;   /* teal-cyan */
  --accent2:#0284C7;  /* blue */

  --shadow: 0 18px 55px rgba(2,6,23,0.10);
  --radius:18px;
  --radius2:14px;
  --navH:74px;
}

*{box-sizing:border-box}
html,body{height:100%}


/* GIF background animation (external). Replace URL if you have a licensed/local file. */
body::before{
  content:"";
  position:fixed;
  inset:0;
  background: url("../img/bg.gif") center / cover no-repeat;
  opacity:0.22;
  filter:saturate(0.9) contrast(1.05);
  z-index:0;
  pointer-events:none;
}

/* Light overlay so text stays readable */
body::after{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(1000px 520px at 15% 0%, rgba(8,145,178,0.08), transparent 55%),
    radial-gradient(860px 520px at 90% 12%, rgba(2,132,199,0.06), transparent 60%),
    linear-gradient(180deg, rgba(248,250,252,0.78), rgba(238,242,247,0.80) 55%, rgba(233,238,246,0.82));
  z-index:1;
  pointer-events:none;
}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:
    radial-gradient(1000px 520px at 15% 0%, rgba(8,145,178,0.10), transparent 55%),
    radial-gradient(860px 520px at 90% 12%, rgba(2,132,199,0.08), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 55%, var(--bg2));
  overflow-x:hidden;
}

/* Background animation canvas */
.canvas-bg{
  position:fixed;
  inset:0;
  z-index:1;             /* above portrait, below content */
  pointer-events:none;
  opacity:.55;
}

/* Blended hero portrait (index only) */
.hero-portrait-bg{
  position:absolute;
  top: var(--navH);
  right: 0;
  height: calc(100vh - var(--navH));
  width: min(60vw, 860px);
  background: url("../img/hero.png") 85% 65% / contain no-repeat;
  z-index:2;
  pointer-events:none;
  opacity: 0.98;
  filter: drop-shadow(0 28px 80px rgba(2,6,23,0.14));
  -webkit-mask-image: radial-gradient(85% 95% at 55% 35%, #000 62%, transparent 100%);
          mask-image: radial-gradient(85% 95% at 55% 35%, #000 62%, transparent 100%);
}
.hero-portrait-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(60% 70% at 55% 25%, rgba(255,255,255,0) 48%, rgba(248,250,252,0.90) 100%),
    linear-gradient(90deg, rgba(248,250,252,0.95) 0%, rgba(248,250,252,0.40) 55%, rgba(248,250,252,0.00) 100%);
  pointer-events:none;
}

.page{position:relative; z-index:3; min-height:100vh}

a{color:inherit; text-decoration:none}
a.link{color:var(--accent)}
a.link:hover{opacity:.9}

.container{
  width:100%;
  margin:0 auto;
  padding: 0 clamp(16px, 4vw, 72px);
}

/* Top nav */
.nav{
  position:sticky;
  top:0;
  z-index:50;
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(15,23,42,0.10);
}
.nav-inner{
  height: var(--navH);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width: 220px;
}
.avatar{
  width:30px; height:30px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,0.14);
  object-fit:cover;
}
.brand-name{
  font-weight:700;
  letter-spacing:.01em;
  font-size:.96rem;
  white-space:nowrap;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:8px;
}
.nav-links a{
  color: var(--muted);
  font-weight:600;
  font-size:.86rem;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding:10px 12px;
  border-radius:999px;
  border:1px solid transparent;
}
.nav-links a:hover,
.nav-links a.active{
  color: var(--text);
  border-color: rgba(15,23,42,0.10);
  background: rgba(2,6,23,0.03);
}

.nav-cta{display:flex; gap:10px; align-items:center}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:40px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,0.12);
  background: rgba(255,255,255,0.60);
  color: var(--text);
  font-weight:700;
  letter-spacing:.02em;
  box-shadow: 0 8px 22px rgba(2,6,23,0.06);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
}
.btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(2,6,23,0.10);
  background: rgba(255,255,255,0.78);
}
.btn-ghost{
  background: rgba(255,255,255,0.20);
  box-shadow:none;
}
.btn-accent{
  border-color: rgba(8,145,178,0.30);
  background: rgba(8,145,178,0.12);
}
.btn-sm{height:34px; padding:0 12px; font-size:.82rem}

.hamburger{
  display:none;
  width:44px; height:44px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,0.12);
  background: rgba(255,255,255,0.55);
}
.hamburger:before{
  content:"";
  display:block;
  width:18px; height:2px;
  background: var(--text);
  margin:0 auto;
  box-shadow:0 6px 0 var(--text), 0 -6px 0 var(--text);
}

.dropdown{position:relative}
.dropdown-toggle{display:inline-flex; align-items:center; gap:6px}
.dropdown-menu{
  position:absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 220px;
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(15,23,42,0.12);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(2,6,23,0.10);
  padding: 10px;
  display:none;
}
.dropdown-menu a{
  display:block;
  padding:10px 12px;
  border-radius: 12px;
  color: var(--muted);
  font-weight:700;
  font-size:.88rem;
}
.dropdown-menu a:hover{
  background: rgba(2,6,23,0.04);
  color: var(--text);
}
.dropdown:hover .dropdown-menu{display:block}

/* Mobile drawer */
.mobile-drawer{
  position:fixed; inset:0;
  background: rgba(2,6,23,0.28);
  backdrop-filter: blur(8px);
  z-index:100;
}
.mobile-panel{
  position:absolute;
  top: 12px; right: 12px; left: 12px;
  border-radius: 18px;
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(15,23,42,0.12);
  box-shadow: 0 28px 90px rgba(2,6,23,0.16);
  padding: 14px;
}
.row{display:flex; align-items:center; justify-content:space-between; gap:10px}
.mobile-links{display:flex; flex-direction:column; gap:6px; padding-top:10px}
.mobile-links a{
  padding: 12px 12px;
  border-radius: 14px;
  color: var(--text);
  font-weight:800;
  background: rgba(2,6,23,0.03);
}
.mobile-links a:hover{background: rgba(2,6,23,0.06)}

@media (max-width:980px){
  .nav-links{display:none}
  .hamburger{display:inline-flex}
}

/* Sections */
.section{padding:46px 0}
.section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:18px}
.section-title{
  font-size: clamp(1.45rem, 2.4vw, 2.4rem);
  letter-spacing:-.01em;
  font-weight:900;
  margin:0;
}
.section-note{color:var(--muted); margin: 8px 0 0 0}
.muted{color:var(--muted)}
.small{color:var(--muted2); font-size:.92rem; line-height:1.65}

/* Cards */
.card{
  border:1px solid rgba(255,255,255,0.16);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: none;
  backdrop-filter: none;
  color: rgba(255,255,255,0.98); /* keep text crisp */
}
.card.pad{padding:18px}

/* Ensure text stays fully opaque inside transparent cards */
.card h1,.card h2,.card h3,.card h4{ color: rgba(255,255,255,0.98); }
.card p,.card li,.card span{ color: rgba(255,255,255,0.92); }
.card .muted{ color: rgba(255,255,255,0.78) !important; }
.card .muted2{ color: rgba(255,255,255,0.70) !important; }
.card a{ color: rgba(255,255,255,0.98); text-decoration: none; }
.card a:hover{ text-decoration: underline; }

/* Optional: subtle outline for readability on bright frames */
.card *{
  text-shadow: 0 1px 12px rgba(0,0,0,0.55);
}

.card.pad{padding:18px}
.cards{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap:16px;
}
@media (max-width:520px){ .cards{grid-template-columns:1fr} }

/* Hero splash */
.hero.hero-splash{ padding: 72px 0 18px; }
.hero-splash-grid{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items:start;
}
.hero-left{padding-top: 10px}
.kbd{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 10px 12px;
  border-radius: 999px;
  border:1px solid rgba(15,23,42,0.10);
  background: rgba(255,255,255,0.55);
  color: var(--muted);
  font-weight:800;
  letter-spacing:.02em;
}
.kbd-dot{
  width:8px; height:8px;
  border-radius:999px;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(8,145,178,0.10);
}
.h1{
  margin: 14px 0 14px;
  font-size: clamp(2.2rem, 5.8vw, 5.2rem);
  line-height: .94;
  letter-spacing: -0.03em;
  font-weight: 900;
}
.sub{
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.75;
  max-width: 75ch;
  margin: 0 0 14px;
}
.actions{display:flex; flex-wrap:wrap; gap:10px; margin: 14px 0 0}
.hero-scroll{margin-top: 18px; color: var(--muted2); font-weight:800; letter-spacing:.04em}
.pills{display:flex; flex-wrap:wrap; gap:8px; margin-top: 8px}
.badge{
  display:inline-flex;
  padding:7px 10px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,0.10);
  background: rgba(255,255,255,0.60);
  color: var(--muted);
  font-weight:800;
  font-size:.78rem;
  letter-spacing:.02em;
}
.hero-right{display:flex; justify-content:flex-end}
.hero-right-mobile{display:none}
.hero-portrait-inline{
  width: min(520px, 86vw);
  max-height: 64vh;
  object-fit: contain;
  filter: drop-shadow(0 20px 70px rgba(2,6,23,0.14));
}

@media (max-width:980px){
  .hero-splash-grid{grid-template-columns:1fr}
  .hero-portrait-bg{display:none}
  .hero-right-mobile{display:flex}
}

/* Search + chips */
.searchbar{
  display:flex;
  gap:10px;
  align-items:center;
  padding:12px 14px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,0.10);
  background: rgba(255,255,255,0.70);
}
.searchbar input{
  width:100%;
  border:0;
  outline:0;
  background:transparent;
  color:var(--text);
  font-weight:700;
}
.chips{display:flex; flex-wrap:wrap; gap:8px; margin-top:12px}
.chip{
  border:1px solid rgba(15,23,42,0.10);
  background: rgba(255,255,255,0.55);
  color: var(--muted);
  padding:8px 12px;
  border-radius:999px;
  font-weight:900;
  font-size:.78rem;
  letter-spacing:.02em;
  cursor:pointer;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.chip:hover{transform: translateY(-1px)}
.chip.active{
  border-color: rgba(8,145,178,0.35);
  background: rgba(8,145,178,0.12);
  color: var(--text);
}

/* Footer */
.footer{
  padding:36px 0 46px;
  border-top:1px solid rgba(15,23,42,0.10);
  background: rgba(255,255,255,0.40);
  margin-top:40px;
}


/* ==========================================================
   Alternate design (Rezaul) — light editorial navbar (unique)
   Keeps layout + content, changes style so it doesn't match
   ========================================================== */

:root{
  --radius: 14px;
  --radius2: 12px;
}

/* Floating clean navbar */
.nav{
  background: transparent !important;
  border-bottom: 0 !important;
  padding: 14px 0;
}

.nav-inner{
  height: auto !important;
  padding: 10px 14px !important;
  border-radius: 16px !important;
  border: 1px solid rgba(15,23,42,0.12) !important;
  background: rgba(255,255,255,0.82) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 34px rgba(15,23,42,0.08);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
}

/* Center nav links with underline interaction */
.nav-links{
  justify-content: center !important;
  gap: 22px !important;
}

.nav-links a{
  position: relative;
  padding: 12px 2px !important;
  border-radius: 0 !important;
  border: 0 !important;
  background: transparent !important;
  color: rgba(15,23,42,0.72) !important;
  font-weight: 700 !important;
  letter-spacing: .01em !important;
  text-transform: none !important;
}

.nav-links a::after{
  content:"";
  position:absolute;
  left: 0;
  right: 0;
  bottom: 7px;
  height: 2px;
  background: rgba(15,23,42,0.92);
  transform: scaleX(0);
  transform-origin: left;
  opacity: .35;
  transition: transform .22s ease, opacity .22s ease;
}

.nav-links a:hover{
  color: rgba(15,23,42,0.95) !important;
}
.nav-links a:hover::after{ transform: scaleX(1); opacity: .55; }

.nav-links a.active{
  color: rgba(15,23,42,0.98) !important;
}
.nav-links a.active::after{ transform: scaleX(1); opacity: .85; }

/* Different button style: squared, not pill */
.btn{
  border-radius: 12px !important;
  border: 1px solid rgba(15,23,42,0.14) !important;
  background: rgba(255,255,255,0.92) !important;
  color: rgba(15,23,42,0.92) !important;
  font-weight: 800 !important;
  letter-spacing: .01em !important;
  transition: transform .16s ease, background .16s ease, box-shadow .16s ease, border-color .16s ease;
}

.btn:hover{
  background: rgba(255,255,255,1) !important;
  border-color: rgba(15,23,42,0.22) !important;
  box-shadow: 0 10px 22px rgba(15,23,42,0.10);
  transform: translateY(-1px);
}

/* Make the CV button look premium and distinct */
.btn.btn-ghost{
  background: rgba(15,23,42,0.92) !important;
  border-color: rgba(15,23,42,0.92) !important;
  color: #fff !important;
}
.btn.btn-ghost:hover{
  background: rgba(15,23,42,1) !important;
  border-color: rgba(15,23,42,1) !important;
}

.hamburger{
  border-radius: 12px !important;
  border: 1px solid rgba(15,23,42,0.14) !important;
  background: rgba(255,255,255,0.92) !important;
}

/* Dropdown menu (More) */
.dropdown-menu{
  border-radius: 14px !important;
  border: 1px solid rgba(15,23,42,0.12) !important;
  background: rgba(255,255,255,0.96) !important;
  box-shadow: 0 18px 42px rgba(15,23,42,0.12) !important;
}
.dropdown-menu a{
  border-radius: 10px !important;
  color: rgba(15,23,42,0.80) !important;
}
.dropdown-menu a:hover{
  background: rgba(15,23,42,0.06) !important;
  color: rgba(15,23,42,0.95) !important;
}

/* Drawer (mobile) to match light nav */
.drawer{
  background: rgba(255,255,255,0.97) !important;
  border-left: 1px solid rgba(15,23,42,0.12) !important;
}
.drawer a{
  color: rgba(15,23,42,0.86) !important;
  font-weight: 700 !important;
}

/* Subtle: make cards a bit sharper and more "paper-like" */
.card{
  background: rgba(255,255,255,0.86) !important;
  border: 1px solid rgba(15,23,42,0.10) !important;
  box-shadow: 0 12px 34px rgba(15,23,42,0.06);
}

/* Keep neural canvas subtle on light theme */
.canvas-bg{ opacity: .40 !important; }

@media (max-width:980px){
  .nav-inner{ grid-template-columns: auto auto; }
}


/* Canvas animation disabled for GIF background */
#neural-canvas{display:none !important;}

/* ==========================================================
   Requested update: fixed top nav + ultra transparent UI
   so the animated background is clearly visible
   ========================================================== */

/* Make the GIF more visible */
body::before{
  opacity: 0.60 !important;
  filter: saturate(1.0) contrast(1.10) !important;
}

/* Keep a LIGHT wash but transparent enough to see motion */
body::after{
  background:
    radial-gradient(1000px 520px at 15% 0%, rgba(8,145,178,0.12), transparent 55%),
    radial-gradient(860px 520px at 90% 12%, rgba(2,132,199,0.10), transparent 60%),
    linear-gradient(180deg,
      rgba(248,250,252,0.42),
      rgba(238,242,247,0.45) 55%,
      rgba(233,238,246,0.48)
    ) !important;
}

/* Remove opaque page background so GIF shows through */
body{
  background: transparent !important;
}

/* Fixed navbar pinned to very top */
.nav{
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  padding: 0 !important;
  z-index: 120 !important;
}

/* Ensure content is not hidden under fixed nav */
.page{
  padding-top: calc(var(--navH) + 12px) !important;
}

/* Transparent nav container (no heavy card look) */
.nav-inner{
  border-radius: 0 !important;
  border: 0 !important;
  border-bottom: 1px solid rgba(15,23,42,0.14) !important;
  background: rgba(255,255,255,0.10) !important;
  box-shadow: none !important;
  backdrop-filter: blur(10px) !important;
  padding: 10px 14px !important;
}

/* Make all UI surfaces more transparent */
.card{
  background: rgba(255,255,255,0.12) !important;
  border-color: rgba(15,23,42,0.12) !important;
  box-shadow: none !important;
  backdrop-filter: blur(10px) !important;
}

.btn{
  background: rgba(255,255,255,0.10) !important;
  box-shadow: none !important;
}
.btn:hover{
  background: rgba(255,255,255,0.16) !important;
  box-shadow: none !important;
}

.btn.btn-ghost{
  background: rgba(15,23,42,0.18) !important;
  border-color: rgba(15,23,42,0.22) !important;
  color: rgba(15,23,42,0.98) !important;
}
.btn.btn-ghost:hover{
  background: rgba(15,23,42,0.26) !important;
}

.searchbar,
.chip,
.badge,
.kbd{
  background: rgba(255,255,255,0.10) !important;
  border-color: rgba(15,23,42,0.12) !important;
}

.dropdown-menu{
  background: rgba(255,255,255,0.16) !important;
  border-color: rgba(15,23,42,0.14) !important;
  box-shadow: none !important;
  backdrop-filter: blur(12px) !important;
}

.mobile-drawer{
  background: rgba(2,6,23,0.12) !important;
}
.mobile-panel{
  background: rgba(255,255,255,0.16) !important;
  border-color: rgba(15,23,42,0.14) !important;
  box-shadow: none !important;
  backdrop-filter: blur(12px) !important;
}

.footer{
  background: rgba(255,255,255,0.06) !important;
  border-top-color: rgba(15,23,42,0.12) !important;
}

/* Keep the blended portrait, but reduce the white wash so background is visible */
.hero-portrait-bg::after{
  background:
    radial-gradient(60% 70% at 55% 25%, rgba(255,255,255,0) 48%, rgba(248,250,252,0.68) 100%),
    linear-gradient(90deg, rgba(248,250,252,0.72) 0%, rgba(248,250,252,0.22) 55%, rgba(248,250,252,0.00) 100%) !important;
}


/* Transparent card UI elements */
.card .badge, .card .chip, .card .btn{
  background: rgba(0,0,0,0.10);
  border-color: rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.92);
}
.card .btn:hover{
  background: rgba(0,0,0,0.16);
}

/* ==========================================================
   Requested update: ultra-transparent cards with BLACK text
   ========================================================== */

/* Make cards extremely transparent but keep text crisp/black */
.card{
  background: rgba(255,255,255,0.025) !important;
  border-color: rgba(0,0,0,0.10) !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: none !important;
  color: rgba(11,18,32,0.98) !important;
}

/* Force black text inside cards (including titles/links) */
.card h1,.card h2,.card h3,.card h4,
.card p,.card li,.card span,
.card a{
  color: rgba(11,18,32,0.98) !important;
}
.card .muted{ color: rgba(11,18,32,0.72) !important; }
.card .muted2{ color: rgba(11,18,32,0.56) !important; }

/* Keep text readable on busy GIF frames while staying black */
.card *{
  text-shadow: 0 1px 10px rgba(255,255,255,0.55) !important;
}

/* Buttons/badges inside cards: transparent + black text */
.card .badge, .card .chip, .card .btn{
  background: rgba(255,255,255,0.03) !important;
  border-color: rgba(0,0,0,0.10) !important;
  color: rgba(11,18,32,0.92) !important;
  text-shadow: 0 1px 10px rgba(255,255,255,0.55) !important;
}
.card .btn:hover{
  background: rgba(255,255,255,0.06) !important;
}