/* GOATNETT — glassmorphism dark design system */
:root{
  --bg0:#070b12; --bg1:#0b1220; --bg2:#0e1626;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --stroke:rgba(255,255,255,.13);
  --txt:#eaf0fa; --muted:#9aa7bd;
  --goat:#3dff8f; --goat2:#22d3ee;
  --grad:linear-gradient(135deg,#3dff8f,#22d3ee);
  --radius:18px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Noto Nastaliq Urdu",sans-serif;
  background:
    radial-gradient(1100px 500px at 15% -5%,rgba(61,255,143,.09),transparent 60%),
    radial-gradient(900px 500px at 90% 10%,rgba(34,211,238,.09),transparent 60%),
    radial-gradient(700px 600px at 50% 110%,rgba(61,255,143,.05),transparent 60%),
    var(--bg0);
  color:var(--txt); min-height:100vh; line-height:1.65;
}
::selection{background:rgba(61,255,143,.35)}
a{color:var(--goat2);text-decoration:none}
a:hover{color:var(--goat)}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:18px;
  padding:12px 26px;
  background:rgba(7,11,18,.62);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--stroke);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:1px;color:var(--txt)}
.brand .goat{font-size:26px;filter:drop-shadow(0 0 8px rgba(61,255,143,.7))}
.brand em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:4px;margin-left:8px}
.nav-links a{color:var(--muted);padding:8px 14px;border-radius:12px;font-weight:600;font-size:15px}
.nav-links a:hover,.nav-links a.active{color:var(--txt);background:var(--glass)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang-toggle{display:flex;background:var(--glass);border:1px solid var(--stroke);border-radius:12px;overflow:hidden}
.lang-toggle button{background:transparent;border:0;color:var(--muted);padding:8px 13px;cursor:pointer;font-weight:700;font-size:13px}
.lang-toggle button.on{background:var(--grad);color:#04120a}
.search-mini{display:flex;align-items:center;background:var(--glass);border:1px solid var(--stroke);border-radius:12px;padding:7px 12px;color:var(--muted);font-size:14px;cursor:pointer}
.search-mini:hover{border-color:var(--goat)}

/* ---------- layout ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:26px 22px 80px}
.crumbs{color:var(--muted);font-size:14px;margin-bottom:14px}
.crumbs a{color:var(--goat2)}

/* ---------- glass ---------- */
.glass{
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow);padding:26px;margin-bottom:22px;
  position:relative;overflow:hidden;
}
.glass::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(120deg,rgba(255,255,255,.07),transparent 40%);}
h1{font-size:34px;line-height:1.25;margin-bottom:10px}
h2{font-size:23px;margin:0 0 12px}
h3{font-size:18px;margin:18px 0 8px}
p{margin:8px 0;color:#d6deeb}
.muted{color:var(--muted)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- hero ---------- */
.hero{position:relative;border-radius:26px;overflow:hidden;margin-bottom:30px;
  border:1px solid var(--stroke);background:rgba(10,16,28,.55);
  backdrop-filter:blur(10px);box-shadow:var(--shadow);min-height:430px;
  display:flex;align-items:center;}
#hero3d{position:absolute;inset:0;width:100%;height:100%}
.hero-inner{position:relative;z-index:2;padding:60px 48px;max-width:640px}
.hero-kicker{display:inline-block;font-size:13px;font-weight:800;letter-spacing:2.5px;color:var(--goat);
  border:1px solid rgba(61,255,143,.4);border-radius:999px;padding:6px 16px;margin-bottom:18px;
  background:rgba(61,255,143,.07)}
.hero h1{font-size:52px;line-height:1.1;margin-bottom:14px}
.hero p.lead{font-size:18px;color:var(--muted);margin-bottom:26px}
.btn{display:inline-block;padding:13px 28px;border-radius:14px;font-weight:800;font-size:16px;
  background:var(--grad);color:#04120a;border:0;cursor:pointer;box-shadow:0 8px 26px rgba(61,255,143,.28);
  transition:transform .18s ease,box-shadow .18s ease}
.btn:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 12px 32px rgba(61,255,143,.4);color:#04120a}
.btn.ghost{background:var(--glass);color:var(--txt);border:1px solid var(--stroke);box-shadow:none;margin-left:10px}
.btn.ghost:hover{border-color:var(--goat)}
.hero-stats{display:flex;gap:26px;margin-top:30px;flex-wrap:wrap}
.hstat{text-align:left}
.hstat b{font-size:28px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hstat span{display:block;color:var(--muted);font-size:13px}

/* ---------- course grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.course-card{background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius);
  padding:22px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease;transform-style:preserve-3d;will-change:transform;position:relative;overflow:hidden}
.course-card:hover{border-color:rgba(61,255,143,.5)}
.course-card .thumb{height:130px;border-radius:12px;margin:-6px -6px 14px;object-fit:cover;width:calc(100% + 12px);border:1px solid var(--stroke)}
.course-card h3{margin:0 0 6px;font-size:19px}
.course-card h3 a{color:var(--txt)}
.course-card .icon{font-size:30px}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.badge{font-size:12px;font-weight:700;padding:4px 11px;border-radius:999px;border:1px solid var(--stroke);color:var(--muted);background:rgba(255,255,255,.04)}
.badge.exam{color:var(--goat);border-color:rgba(61,255,143,.4)}
.badge.env{color:var(--goat2);border-color:rgba(34,211,238,.4)}
.pbar{height:8px;border-radius:99px;background:rgba(255,255,255,.08);margin-top:12px;overflow:hidden}
.pbar>div{height:100%;width:0;background:var(--grad);border-radius:99px;transition:width .6s ease}
.pbar-label{font-size:12px;color:var(--muted);margin-top:6px}

/* ---------- roadmap ---------- */
.roadmap{position:relative;margin-top:10px}
.roadmap::before{content:"";position:absolute;left:31px;top:10px;bottom:10px;width:3px;
  background:linear-gradient(180deg,var(--goat),var(--goat2),transparent);border-radius:3px;opacity:.5}
.stage{position:relative;padding:0 0 14px 78px}
.stage-dot{position:absolute;left:14px;top:20px;width:38px;height:38px;border-radius:50%;
  background:var(--bg2);border:2px solid var(--goat);display:flex;align-items:center;justify-content:center;
  font-weight:800;color:var(--goat);z-index:2;box-shadow:0 0 18px rgba(61,255,143,.35)}
.stage-head{background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius);
  padding:18px 22px;backdrop-filter:blur(14px);cursor:pointer;display:flex;align-items:center;gap:16px;
  transition:border-color .2s}
.stage-head:hover{border-color:rgba(61,255,143,.5)}
.stage-head .n{font-size:13px;color:var(--muted);font-weight:700;letter-spacing:1px}
.stage-head h3{margin:0;font-size:20px}
.stage-head .chev{margin-left:auto;color:var(--goat);font-size:22px;transition:transform .25s}
.stage.open .chev{transform:rotate(180deg)}
.stage-body{display:none;margin-top:12px}
.stage.open .stage-body{display:block;animation:fadeUp .3s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.sections{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.sec{background:rgba(255,255,255,.035);border:1px solid var(--stroke);border-radius:14px;padding:14px 16px}
.sec h4{font-size:15px;margin-bottom:8px;color:var(--goat2)}
.sec ul{list-style:none}
.sec li{font-size:13.5px;padding:3px 0;color:#c9d3e4}
.sec li a{color:#c9d3e4}
.sec li a:hover{color:var(--goat)}
.sec li.done a{color:var(--muted);text-decoration:line-through}

/* ---------- lesson ---------- */
.lab-hero{width:100%;border-radius:14px;border:1px solid var(--stroke);margin:6px 0 18px;box-shadow:var(--shadow)}
.topo-fig{margin:18px 0}
.topo-fig img{width:100%;border-radius:14px;border:1px solid var(--stroke);box-shadow:var(--shadow);background:#fafafa}
.topo-fig figcaption{color:var(--muted);font-size:13px;margin-top:8px;text-align:center}
.device-img{width:100%;max-height:280px;object-fit:cover;border-radius:14px;border:1px solid var(--stroke);margin-bottom:16px}
.step{border-left:3px solid var(--goat);padding:4px 0 4px 18px;margin:16px 0}
.step h4{color:var(--goat);margin-bottom:6px}
pre{background:#0a0f1a;border:1px solid var(--stroke);border-radius:12px;padding:16px 18px;overflow-x:auto;margin:10px 0}
code{font-family:"Cascadia Code","JetBrains Mono",Consolas,monospace;font-size:13.5px;color:#b8f5d0}
.cmd-cap{font-size:12px;color:var(--muted);margin:-4px 0 8px}
.qa{margin:12px 0;padding:14px 18px;background:rgba(34,211,238,.06);border:1px solid rgba(34,211,238,.25);border-radius:12px}
.qa b.q{color:var(--goat2)}
.ts{margin:10px 0;padding:12px 16px;background:rgba(255,180,80,.06);border:1px solid rgba(255,180,80,.25);border-radius:12px}
.ts b{color:#ffb454}
.done-row{display:flex;align-items:center;gap:12px;margin:22px 0;padding:14px 18px;background:var(--glass);border:1px solid var(--stroke);border-radius:12px}
.done-row input{width:22px;height:22px;accent-color:#3dff8f;cursor:pointer}
.prevnext{display:flex;justify-content:space-between;gap:12px;margin-top:26px;flex-wrap:wrap}
.kv{display:grid;grid-template-columns:170px 1fr;gap:8px 14px;margin:12px 0;font-size:15px}
.kv dt{color:var(--muted)} .kv dd{color:var(--txt)}

/* ---------- search ---------- */
.search-hero{text-align:center;padding:30px 0}
.search-box{display:flex;max-width:640px;margin:20px auto;background:var(--glass);border:1px solid var(--stroke);
  border-radius:16px;overflow:hidden;backdrop-filter:blur(14px)}
.search-box input{flex:1;background:transparent;border:0;color:var(--txt);padding:16px 20px;font-size:17px;outline:none}
.search-box button{background:var(--grad);border:0;padding:0 26px;font-size:18px;cursor:pointer}
.result{background:var(--glass);border:1px solid var(--stroke);border-radius:14px;padding:16px 20px;margin-bottom:12px;backdrop-filter:blur(10px)}
.result h4{margin:0 0 4px}.result h4 a{color:var(--txt)}
.result .rmeta{font-size:12.5px;color:var(--muted);margin-bottom:6px}
.result p{font-size:14px;color:#c9d3e4;margin:0}
mark{background:rgba(61,255,143,.35);color:var(--txt);border-radius:3px;padding:0 2px}

/* ---------- misc ---------- */
footer{border-top:1px solid var(--stroke);padding:26px;text-align:center;color:var(--muted);font-size:14px;background:rgba(7,11,18,.6)}
.fab-3d{position:fixed;right:22px;bottom:22px;width:58px;height:58px;border-radius:50%;
  background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:26px;
  box-shadow:0 10px 30px rgba(61,255,143,.4);cursor:pointer;z-index:60;border:0;transition:transform .2s}
.fab-3d:hover{transform:scale(1.1) rotate(8deg)}
.l-ur{display:none}.l-en{display:none}
body[data-lang="ur"] .l-ur{display:inline}body[data-lang="ur"] .l-rur{display:none}
body[data-lang="en"] .l-en{display:inline}body[data-lang="en"] .l-rur{display:none}
body[data-lang="ur"] div.l-ur,body[data-lang="ur"] p.l-ur,body[data-lang="ur"] li.l-ur{display:block}
body[data-lang="en"] div.l-en,body[data-lang="en"] p.l-en,body[data-lang="en"] li.l-en{display:block}
.tilt{transition:transform .15s ease-out}
@media(max-width:760px){
  .hero h1{font-size:36px}.hero-inner{padding:40px 26px}
  .nav{flex-wrap:wrap}.kv{grid-template-columns:1fr}
  h1{font-size:26px}
}