/* ==========================================================
   NexusEdge IT Training — Premium Blue Futuristic Theme
   ========================================================== */

:root{
  --primary:#0B5FFF;
  --secondary:#00C2FF;
  --bg:#050816;
  --bg-2:#070b25;
  --bg-3:#0a1030;
  --text:#ffffff;
  --muted:#a8b6d9;
  --accent:#00e5ff;
  --glow: 0 0 40px rgba(0,194,255,.35);
  --border-glow: 1px solid rgba(0,194,255,.35);
  --glass: rgba(255,255,255,.04);
  --glass-strong: rgba(255,255,255,.07);
  --radius: 18px;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  min-height:100vh;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

/* Animated gradient backdrop */
.bg-fx{
  position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(1000px 700px at 10% -10%, rgba(11,95,255,.35), transparent 60%),
    radial-gradient(900px 700px at 110% 10%, rgba(0,194,255,.25), transparent 60%),
    radial-gradient(800px 600px at 50% 120%, rgba(11,95,255,.30), transparent 60%),
    linear-gradient(180deg, #050816 0%, #060a1f 50%, #050816 100%);
  animation: bgshift 18s ease-in-out infinite alternate;
}
@keyframes bgshift{
  0%{filter:hue-rotate(0deg)}
  100%{filter:hue-rotate(25deg)}
}

/* Grid overlay */
.bg-grid{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,194,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,194,255,.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

/* Particles */
#particles{position:fixed;inset:0;z-index:-1;pointer-events:none}

/* ---------- Navbar-ish top strip (minimal, allowed as brand) ---------- */
/* User asked no navbar/footer — omitted. */

/* ---------- Container ---------- */
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- Buttons ---------- */
.btn{
  position:relative;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;
  font-weight:600;font-size:15px;letter-spacing:.3px;
  border-radius:999px;
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;color:#fff;
  transition:transform .3s ease, box-shadow .3s ease, background .3s ease;
  font-family:var(--font-body);
}
.btn-primary{
  background:linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow:0 10px 30px rgba(11,95,255,.45), inset 0 0 0 1px rgba(255,255,255,.15);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(0,194,255,.55)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(0,194,255,.35);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover{background:rgba(0,194,255,.12);box-shadow:var(--glow)}
.btn svg{width:18px;height:18px}

/* ---------- Views (SPA) ---------- */
.view{display:none;animation:fadeUp .5s ease both}
.view.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* ==========================================================
   HERO
   ========================================================== */
.hero{
  position:relative;
  padding: 120px 0 90px;
  overflow:hidden;
}
.hero-inner{
  display:grid;grid-template-columns: 1.15fr .85fr;gap:60px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;border-radius:999px;
  background:rgba(0,194,255,.08);
  border:1px solid rgba(0,194,255,.3);
  font-size:13px;color:#bfe6ff;font-weight:500;
  margin-bottom:24px;
  backdrop-filter: blur(10px);
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.4}}

.hero h1{
  font-family:var(--font-display);
  font-size: clamp(38px, 5.4vw, 68px);
  line-height:1.05;
  font-weight:700;
  letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero h1 .grad{
  background:linear-gradient(120deg, #ffffff 0%, #7bd6ff 40%, #0B5FFF 80%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{
  font-size:18px;color:var(--muted);max-width:600px;margin-bottom:36px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* Hero art */
.hero-art{
  position:relative;height:520px;
  display:flex;align-items:center;justify-content:center;
}
.orb{
  position:absolute;border-radius:50%;
  background: conic-gradient(from 0deg, #0B5FFF, #00C2FF, #0B5FFF);
  filter: blur(2px);
  animation: spin 14s linear infinite;
}
.orb.o1{width:320px;height:320px;opacity:.35;mask:radial-gradient(circle, transparent 55%, black 56%)}
.orb.o2{width:440px;height:440px;opacity:.2;animation-duration:22s;animation-direction:reverse;mask:radial-gradient(circle, transparent 62%, black 63%)}
@keyframes spin{to{transform:rotate(360deg)}}
.core{
  position:relative;width:220px;height:220px;border-radius:50%;
  background: radial-gradient(circle at 30% 30%, #7bd6ff, #0B5FFF 55%, #050816 100%);
  box-shadow: 0 0 100px rgba(0,194,255,.6), inset 0 0 60px rgba(255,255,255,.15);
  animation: float 6s ease-in-out infinite;
}
@keyframes float{50%{transform:translateY(-16px)}}
.chip{
  position:absolute;padding:10px 14px;border-radius:12px;
  background:rgba(10,20,50,.7);border:1px solid rgba(0,194,255,.35);
  backdrop-filter: blur(12px);
  font-size:12px;font-weight:600;color:#cfe9ff;letter-spacing:.4px;
  box-shadow:0 10px 30px rgba(0,0,0,.35), inset 0 0 0 1px rgba(255,255,255,.05);
  animation: float 5s ease-in-out infinite;
}
.chip.c1{top:8%;left:6%;animation-delay:.2s}
.chip.c2{top:20%;right:4%;animation-delay:.8s}
.chip.c3{bottom:20%;left:0;animation-delay:1.2s}
.chip.c4{bottom:6%;right:12%;animation-delay:1.6s}

/* ==========================================================
   SECTION HEADERS
   ========================================================== */
.section{padding: 90px 0;position:relative}
.section-head{text-align:center;max-width:760px;margin:0 auto 60px}
.section-head .tag{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:rgba(0,194,255,.08);border:1px solid rgba(0,194,255,.28);
  font-size:12px;color:#bfe6ff;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:18px;
}
.section-head h2{
  font-family:var(--font-display);
  font-size:clamp(30px,4vw,48px);font-weight:700;letter-spacing:-.02em;line-height:1.1;
  margin-bottom:16px;
}
.section-head h2 .grad{
  background:linear-gradient(120deg,#fff,#00C2FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.section-head p{color:var(--muted);font-size:17px}

/* ==========================================================
   DOMAIN CARDS
   ========================================================== */
.grid-cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:26px;
}
.card{
  position:relative;
  padding:32px 26px 26px;
  border-radius:22px;
  background: linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border:1px solid rgba(0,194,255,.18);
  backdrop-filter: blur(18px) saturate(140%);
  overflow:hidden;
  transition: transform .5s cubic-bezier(.2,.8,.2,1), box-shadow .4s ease, border-color .4s ease;
  will-change: transform;
}
.card::before{
  content:"";position:absolute;inset:-1px;border-radius:22px;padding:1px;
  background: linear-gradient(135deg, rgba(0,194,255,.6), transparent 40%, rgba(11,95,255,.6));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity:0;transition:opacity .4s ease;pointer-events:none;
}
.card:hover::before{opacity:1}
.card:hover{
  transform: translateY(-10px);
  border-color: rgba(0,194,255,.5);
  box-shadow: 0 30px 60px rgba(0,0,0,.4), 0 0 40px rgba(0,194,255,.25);
}
.card .icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background: linear-gradient(135deg, rgba(11,95,255,.35), rgba(0,194,255,.35));
  border:1px solid rgba(0,194,255,.4);
  color:#eaffff;
  margin-bottom:20px;
  box-shadow: 0 10px 30px rgba(0,194,255,.25);
  transition: transform .4s ease;
}
.card:hover .icon{transform: rotate(-6deg) scale(1.05)}
.card .icon svg{width:28px;height:28px}
.card h3{
  font-family:var(--font-display);
  font-size:20px;font-weight:600;margin-bottom:10px;letter-spacing:-.01em;
}
.card p{color:var(--muted);font-size:14.5px;margin-bottom:22px;min-height:66px}
.card .learn{
  display:inline-flex;align-items:center;gap:8px;
  color:#bfe6ff;font-weight:600;font-size:14px;cursor:pointer;
  background:none;border:none;padding:0;
  transition:color .3s ease, gap .3s ease;
}
.card .learn:hover{color:#fff;gap:14px}
.card .learn svg{width:16px;height:16px;transition:transform .3s ease}
.card:hover .learn svg{transform:translateX(4px)}

.card .halo{
  position:absolute;width:220px;height:220px;border-radius:50%;
  background: radial-gradient(circle, rgba(0,194,255,.35), transparent 70%);
  top:-80px;right:-80px;filter:blur(20px);opacity:.6;
  transition:opacity .4s ease;
}
.card:hover .halo{opacity:1}

/* ==========================================================
   FEATURES (common features strip)
   ========================================================== */
.features{
  display:grid;
  grid-template-columns: repeat(5, 1fr);
  gap:16px;
}
.feature{
  padding:20px;border-radius:16px;
  background: rgba(255,255,255,.03);
  border:1px solid rgba(0,194,255,.18);
  backdrop-filter: blur(14px);
  display:flex;align-items:center;gap:12px;
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.feature:hover{transform:translateY(-4px);border-color:rgba(0,194,255,.45);background:rgba(0,194,255,.06)}
.feature .fi{
  width:38px;height:38px;flex-shrink:0;border-radius:10px;
  background:linear-gradient(135deg,#0B5FFF,#00C2FF);
  display:flex;align-items:center;justify-content:center;
}
.feature .fi svg{width:20px;height:20px;color:#fff}
.feature span{font-size:13.5px;font-weight:500;color:#e6f1ff}

/* ==========================================================
   COURSE PAGE
   ========================================================== */
.course-hero{
  position:relative;
  padding:130px 0 80px;
  text-align:center;
  overflow:hidden;
}
.course-hero .float-shape{
  position:absolute;border-radius:50%;
  background: radial-gradient(circle, rgba(0,194,255,.4), transparent 70%);
  filter:blur(30px);
  animation: float 8s ease-in-out infinite;
}
.fs1{width:300px;height:300px;top:-60px;left:-60px;animation-delay:0s}
.fs2{width:400px;height:400px;bottom:-120px;right:-100px;animation-delay:2s;background:radial-gradient(circle,rgba(11,95,255,.4),transparent 70%)}
.fs3{width:180px;height:180px;top:30%;right:20%;animation-delay:4s}

.course-hero h1{
  font-family:var(--font-display);
  font-size:clamp(36px,5vw,64px);
  font-weight:700;letter-spacing:-.02em;line-height:1.05;
  margin-bottom:16px;
}
.course-hero h1 .grad{
  background:linear-gradient(120deg,#fff,#00C2FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.course-hero .breadcrumb{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 18px;border-radius:999px;
  background:rgba(0,194,255,.08);border:1px solid rgba(0,194,255,.28);
  font-size:13px;color:#bfe6ff;margin-bottom:28px;
}

.glass-card{
  background: linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border:1px solid rgba(0,194,255,.25);
  backdrop-filter: blur(20px) saturate(140%);
  border-radius:24px;
  padding:40px;
  box-shadow: 0 20px 50px rgba(0,0,0,.35), inset 0 0 0 1px rgba(255,255,255,.03);
  position:relative;overflow:hidden;
}
.glass-card::after{
  content:"";position:absolute;inset:0;border-radius:24px;pointer-events:none;
  background: radial-gradient(600px 200px at 0% 0%, rgba(0,194,255,.15), transparent 60%);
}

.summary-wrap p{color:#dfeaff;font-size:17px;line-height:1.75;position:relative}

/* Duration cards */
.duration-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.duration-card{
  padding:34px 26px;border-radius:20px;text-align:center;
  background: linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border:1px solid rgba(0,194,255,.25);
  backdrop-filter: blur(16px);
  position:relative;overflow:hidden;
  transition:transform .4s ease, border-color .4s ease, box-shadow .4s ease;
}
.duration-card:hover{transform:translateY(-8px);border-color:rgba(0,194,255,.55);box-shadow:0 20px 40px rgba(0,194,255,.2)}
.duration-card .num{
  font-family:var(--font-display);
  font-size:44px;font-weight:700;
  background:linear-gradient(120deg,#7bd6ff,#0B5FFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1;margin-bottom:8px;
}
.duration-card .lbl{color:#cfe9ff;font-size:15px;letter-spacing:.5px}
.duration-card .ring{
  position:absolute;inset:auto -40px -40px auto;width:140px;height:140px;border-radius:50%;
  background: conic-gradient(from 0deg, transparent, rgba(0,194,255,.4), transparent);
  animation: spin 10s linear infinite;opacity:.4;
}

/* Two-column list cards (Internship + Why Choose) */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.list-card{
  padding:34px;border-radius:22px;
  background: linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border:1px solid rgba(0,194,255,.22);
  backdrop-filter: blur(16px);
  position:relative;
}
.list-card h3{
  font-family:var(--font-display);font-size:22px;font-weight:600;margin-bottom:22px;
  display:flex;align-items:center;gap:12px;
}
.list-card h3 .ico{
  width:40px;height:40px;border-radius:10px;
  background:linear-gradient(135deg,#0B5FFF,#00C2FF);
  display:flex;align-items:center;justify-content:center;
}
.list-card h3 .ico svg{width:20px;height:20px}
.list-card ul{list-style:none}
.list-card li{
  display:flex;align-items:flex-start;gap:12px;
  padding:12px 0;
  border-bottom:1px solid rgba(0,194,255,.08);
  color:#dfeaff;font-size:15px;
}
.list-card li:last-child{border-bottom:none}
.list-card li .check{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  background:linear-gradient(135deg,#0B5FFF,#00C2FF);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 12px rgba(0,194,255,.5);
}
.list-card li .check svg{width:12px;height:12px;color:#fff}

/* CTA */
.cta-wrap{
  text-align:center;padding:80px 40px;border-radius:28px;
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(0,194,255,.2), transparent 70%),
    linear-gradient(160deg, rgba(11,95,255,.15), rgba(0,194,255,.05));
  border:1px solid rgba(0,194,255,.3);
  backdrop-filter: blur(16px);
  position:relative;overflow:hidden;
}
.cta-wrap h2{
  font-family:var(--font-display);
  font-size:clamp(28px,3.5vw,42px);font-weight:700;letter-spacing:-.02em;margin-bottom:14px;
}
.cta-wrap p{color:var(--muted);margin-bottom:30px;font-size:17px}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Subsection title inside a course */
.sub-title{
  font-family:var(--font-display);
  font-size:clamp(22px,2.6vw,30px);font-weight:600;letter-spacing:-.01em;
  margin-bottom:24px;text-align:center;
}
.sub-title .grad{
  background:linear-gradient(120deg,#fff,#00C2FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s ease, transform .8s ease}
.reveal.in{opacity:1;transform:none}

/* Loader */
#loader{
  position:fixed;inset:0;background:#050816;z-index:9999;
  display:flex;align-items:center;justify-content:center;
  transition:opacity .6s ease, visibility .6s ease;
}
#loader.hide{opacity:0;visibility:hidden}
.spinner{
  width:60px;height:60px;border-radius:50%;
  border:3px solid rgba(0,194,255,.15);
  border-top-color:#00C2FF;
  animation: spin 1s linear infinite;
  box-shadow: 0 0 30px rgba(0,194,255,.4);
}

/* Responsive */
@media (max-width: 980px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-art{height:380px}
  .grid-cards{grid-template-columns:repeat(2,1fr)}
  .features{grid-template-columns:repeat(2,1fr)}
  .duration-grid{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr}
}
@media (max-width: 600px){
  .grid-cards{grid-template-columns:1fr}
  .features{grid-template-columns:1fr}
  .hero{padding:90px 0 60px}
  .section{padding:60px 0}
  .glass-card{padding:26px}
  .list-card{padding:24px}
  .cta-wrap{padding:50px 24px}
}