/* ═══════════════════════════════════════════════════════════
   NERDLYBUILDS — Design System v2
   Deep dark mode · Vibrant neon accents · Industrial-tech
   ═══════════════════════════════════════════════════════════ */
:root {
  --bg-deep:#05080d; --bg:#090d14; --bg-card:#0e1420; --bg-raised:#141c2c; --bg-code:#080c14;
  --cyan:#00e5ff; --cyan-mid:#00b8d4; --cyan-dim:#0088a3;
  --cyan-glow:rgba(0,229,255,0.18); --cyan-glow2:rgba(0,229,255,0.08);
  --orange:#ff7b2e; --orange-mid:#e86a1a; --orange-glow:rgba(255,123,46,0.18);
  --green:#00e676; --green-glow:rgba(0,230,118,0.15);
  --purple:#b388ff; --purple-glow:rgba(179,136,255,0.15);
  --red:#ff5252; --yellow:#ffd740;
  --text:#c8d4e2; --text-bright:#f0f6ff; --text-muted:#627489; --text-dim:#374357;
  --border:#162030; --border-cyan:rgba(0,229,255,0.15);
  --font-head:'Rajdhani',sans-serif; --font-body:'Nunito Sans',-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --gutter:clamp(1rem,4vw,3rem); --max-w:1240px; --radius:6px; --radius-lg:12px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scrollbar-color:var(--cyan-dim) var(--bg-deep)}
body{font-family:var(--font-body);background:var(--bg-deep);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}

/* ambient bg */
body::before{content:'';position:fixed;inset:0;background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(0,229,255,0.04),transparent 60%),radial-gradient(ellipse 60% 80% at 0% 100%,rgba(255,123,46,0.03),transparent 50%),radial-gradient(ellipse 50% 50% at 100% 50%,rgba(179,136,255,0.02),transparent 50%),repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(255,255,255,0.007) 2px,rgba(255,255,255,0.007) 4px),repeating-linear-gradient(90deg,transparent,transparent 2px,rgba(255,255,255,0.007) 2px,rgba(255,255,255,0.007) 4px);pointer-events:none;z-index:0}

/* top accent bar */
body::after{content:'';position:fixed;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--orange),var(--cyan) 40%,var(--purple) 70%,var(--cyan) 90%,var(--orange));z-index:9999;box-shadow:0 0 20px rgba(0,229,255,0.5),0 0 60px rgba(0,229,255,0.15)}

.container{max-width:var(--max-w);margin:0 auto;padding:0 var(--gutter);position:relative;z-index:1}
.section{padding:5rem 0}

/* ─── TOPBAR ─── */
.topbar{position:sticky;top:3px;z-index:100;background:rgba(5,8,13,0.9);backdrop-filter:blur(20px) saturate(1.4);border-bottom:1px solid var(--border)}
.topbar-inner{max-width:var(--max-w);margin:0 auto;padding:0 var(--gutter);display:flex;align-items:center;justify-content:space-between;height:64px}
.topbar-logo{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text-bright)}
.topbar-logo img{height:40px;width:auto;filter:drop-shadow(0 0 8px rgba(0,229,255,0.4))}
.topbar-logo span{font-family:var(--font-head);font-size:1.3rem;font-weight:700}
.topbar-logo span em{color:var(--cyan);font-style:normal;text-shadow:0 0 20px rgba(0,229,255,0.5)}
.topbar-nav{display:flex;align-items:center;gap:.25rem}
.topbar-nav a{font-family:var(--font-head);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);text-decoration:none;padding:.5rem .9rem;border-radius:var(--radius);transition:all .25s;position:relative}
.topbar-nav a:hover{color:var(--cyan);background:var(--cyan-glow);text-shadow:0 0 12px rgba(0,229,255,0.4)}
.topbar-nav a.active{color:var(--cyan);background:var(--cyan-glow)}
.topbar-nav a.active::after{content:'';position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);width:24px;height:2px;background:var(--cyan);box-shadow:0 0 8px var(--cyan);border-radius:2px}
.nav-toggle{display:none;background:none;border:1px solid var(--border);color:var(--cyan);font-size:1.2rem;cursor:pointer;padding:.4rem .6rem;border-radius:var(--radius)}
@media(max-width:768px){
  .nav-toggle{display:block}
  .topbar-nav{position:absolute;top:64px;left:0;right:0;background:rgba(5,8,13,0.98);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);flex-direction:column;padding:1rem;display:none}
  .topbar-nav.open{display:flex}
  .topbar-nav a{width:100%;padding:.75rem 1rem}
  .hero-grid{grid-template-columns:1fr!important;text-align:center}
  .hero{min-height:auto!important;padding:6rem 0 4rem!important}
  .hero-overline{justify-content:center}
  .about-grid,.cta-grid,.footer-grid{grid-template-columns:1fr!important}
  .stat-strip{grid-template-columns:repeat(2,1fr)!important}
  .interest-grid{grid-template-columns:1fr!important}
  .posts-grid{grid-template-columns:1fr!important}
  .blog-grid{grid-template-columns:1fr!important}
  .article-wrap{grid-template-columns:1fr!important}
  .sidebar{border-left:none!important;padding-left:0!important;border-top:1px solid var(--border);padding-top:2rem}
}

/* social */
.social-bar{display:flex;gap:.5rem;align-items:center}
.social-bar a{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--border);color:var(--text-dim);text-decoration:none;font-size:.85rem;transition:all .3s}
.social-bar a:hover{color:var(--cyan);border-color:var(--cyan);background:var(--cyan-glow);transform:translateY(-3px);box-shadow:0 4px 15px rgba(0,229,255,0.2)}

/* type */
h1,h2,h3,h4{font-family:var(--font-head);color:var(--text-bright);line-height:1.2}
.section-label{font-family:var(--font-mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.3em;color:var(--cyan);display:flex;align-items:center;gap:.75rem;margin-bottom:.75rem;text-shadow:0 0 20px rgba(0,229,255,0.4)}
.section-label::before{content:'//';color:var(--orange);font-weight:700}
.section-title{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:700;margin-bottom:.5rem}
.section-subtitle{color:var(--text-muted);font-size:1rem;max-width:540px}

/* cards */
.card{background:linear-gradient(135deg,var(--bg-card),rgba(14,20,32,0.8));border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .4s cubic-bezier(.23,1,.32,1);position:relative}
.card::before{content:'';position:absolute;inset:0;border-radius:var(--radius-lg);padding:1px;background:linear-gradient(135deg,transparent,transparent);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;transition:background .4s;pointer-events:none}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,.5),0 0 30px rgba(0,229,255,.08),inset 0 1px 0 rgba(0,229,255,.1);border-color:var(--border-cyan)}
.card:hover::before{background:linear-gradient(135deg,rgba(0,229,255,.3),rgba(255,123,46,.2))}
.card-img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;border-bottom:1px solid var(--border)}
.card-body{padding:1.25rem 1.5rem 1.5rem}
.card-tag{font-family:var(--font-mono);font-size:.6rem;text-transform:uppercase;letter-spacing:.2em;padding:.2em .6em;border-radius:3px;display:inline-block;margin-right:.4rem;margin-bottom:.5rem}
.tag-cyan{background:var(--cyan-glow);color:var(--cyan);border:1px solid rgba(0,229,255,.25);text-shadow:0 0 8px rgba(0,229,255,.3)}
.tag-orange{background:var(--orange-glow);color:var(--orange);border:1px solid rgba(255,123,46,.25);text-shadow:0 0 8px rgba(255,123,46,.3)}
.tag-green{background:var(--green-glow);color:var(--green);border:1px solid rgba(0,230,118,.25)}
.tag-purple{background:var(--purple-glow);color:var(--purple);border:1px solid rgba(179,136,255,.25)}
.card-title{font-size:1.2rem;font-weight:600;margin-bottom:.5rem}
.card-title a{color:var(--text-bright);text-decoration:none;transition:color .25s,text-shadow .25s}
.card-title a:hover{color:var(--cyan);text-shadow:0 0 16px rgba(0,229,255,.3)}
.card-excerpt{font-size:.88rem;color:var(--text-muted);line-height:1.6}
.card-meta{display:flex;align-items:center;gap:1rem;margin-top:1rem;padding-top:.75rem;border-top:1px solid var(--border);font-family:var(--font-mono);font-size:.65rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.1em}

/* btns */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-head);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;padding:.65rem 1.5rem;border-radius:var(--radius);text-decoration:none;transition:all .3s;cursor:pointer;border:none}
.btn-cyan{background:linear-gradient(135deg,var(--cyan),var(--cyan-mid));color:var(--bg-deep);box-shadow:0 0 20px rgba(0,229,255,.2)}
.btn-cyan:hover{background:linear-gradient(135deg,#33eeff,var(--cyan));box-shadow:0 0 30px rgba(0,229,255,.4),0 4px 15px rgba(0,229,255,.2);transform:translateY(-2px)}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--cyan);color:var(--cyan);background:var(--cyan-glow);box-shadow:0 0 15px rgba(0,229,255,.15)}
.btn-orange{background:linear-gradient(135deg,var(--orange),var(--orange-mid));color:#fff;box-shadow:0 0 20px rgba(255,123,46,.2)}
.btn-orange:hover{box-shadow:0 0 30px rgba(255,123,46,.4);transform:translateY(-2px)}

/* code */
pre{background:var(--bg-code);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.5rem;overflow-x:auto;font-family:var(--font-mono);font-size:.82rem;line-height:1.7;color:var(--text);position:relative;margin:1.5rem 0;box-shadow:inset 0 2px 10px rgba(0,0,0,.3)}
pre::before{content:attr(data-lang);position:absolute;top:0;right:0;font-family:var(--font-mono);font-size:.55rem;text-transform:uppercase;letter-spacing:.2em;padding:.3em .8em;background:linear-gradient(135deg,var(--cyan-glow),rgba(0,229,255,.05));color:var(--cyan);border-radius:0 var(--radius) 0 var(--radius);border-bottom:1px solid var(--border-cyan);border-left:1px solid var(--border-cyan)}
code{font-family:var(--font-mono)}
p code,li code{background:var(--bg-raised);padding:.15em .4em;border-radius:3px;font-size:.88em;color:var(--cyan);border:1px solid var(--border)}

/* youtube embeds */
.video-embed{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--border);margin:1.5rem 0;box-shadow:0 8px 30px rgba(0,0,0,.4)}
.video-embed iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}

/* ads */
.ad-slot{background:rgba(14,20,32,.4);border:1px dashed var(--border);border-radius:var(--radius);padding:1.5rem;text-align:center;margin:2rem 0;min-height:90px;display:flex;align-items:center;justify-content:center;position:relative}
.ad-slot::after{content:'AD';font-family:var(--font-mono);font-size:.5rem;letter-spacing:.3em;color:var(--text-dim);position:absolute;top:.4rem;right:.6rem}
.ad-slot-placeholder{color:var(--text-dim);font-size:.7rem;font-family:var(--font-mono)}

/* footer */
.site-footer{border-top:1px solid var(--border);padding:3rem 0 2rem;margin-top:3rem;position:relative;z-index:1;background:linear-gradient(180deg,transparent,rgba(0,229,255,.02))}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer-brand{font-family:var(--font-head);font-size:1.2rem;font-weight:700;color:var(--text-bright);margin-bottom:.75rem}
.footer-brand em{color:var(--cyan);font-style:normal;text-shadow:0 0 20px rgba(0,229,255,.4)}
.footer-desc{font-size:.82rem;color:var(--text-muted);line-height:1.6;margin-bottom:1rem}
.footer-heading{font-family:var(--font-head);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.15em;color:var(--orange);margin-bottom:1rem}
.footer-links{list-style:none}
.footer-links li{margin-bottom:.5rem}
.footer-links a{color:var(--text-dim);text-decoration:none;font-size:.85rem;transition:color .2s}
.footer-links a:hover{color:var(--cyan)}
.footer-bottom{border-top:1px solid var(--border);padding-top:1.5rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}
.footer-copy{font-family:var(--font-mono);font-size:.65rem;color:var(--text-dim);letter-spacing:.1em}

/* newsletter */
.newsletter-row{display:flex;gap:0;max-width:400px}
.newsletter-row input{flex:1;padding:.6rem 1rem;background:var(--bg-deep);border:1px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);color:var(--text);font-family:var(--font-body);font-size:.85rem}
.newsletter-row input::placeholder{color:var(--text-dim)}
.newsletter-row input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 10px rgba(0,229,255,.15)}
.newsletter-row button{padding:.6rem 1.2rem;background:linear-gradient(135deg,var(--cyan),var(--cyan-mid));color:var(--bg-deep);border:none;border-radius:0 var(--radius) var(--radius) 0;font-family:var(--font-head);font-weight:700;font-size:.8rem;cursor:pointer;text-transform:uppercase;letter-spacing:.08em;transition:all .3s}
.newsletter-row button:hover{box-shadow:0 0 20px rgba(0,229,255,.3)}

/* animations */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes glowPulse{0%,100%{opacity:.5}50%{opacity:1}}
@keyframes slideIn{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}
.anim-fade-up{animation:fadeUp .6s ease both}
.anim-stagger>*{animation:fadeUp .5s ease both}
.anim-stagger>*:nth-child(1){animation-delay:.1s}
.anim-stagger>*:nth-child(2){animation-delay:.2s}
.anim-stagger>*:nth-child(3){animation-delay:.3s}
.anim-stagger>*:nth-child(4){animation-delay:.4s}
.anim-stagger>*:nth-child(5){animation-delay:.5s}
.anim-stagger>*:nth-child(6){animation-delay:.6s}
.skeleton{background:linear-gradient(90deg,var(--bg-card) 25%,var(--bg-raised) 50%,var(--bg-card) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius)}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.text-cyan{color:var(--cyan);text-shadow:0 0 20px rgba(0,229,255,.3)}
.text-orange{color:var(--orange);text-shadow:0 0 20px rgba(255,123,46,.3)}
.text-green{color:var(--green)}.text-purple{color:var(--purple)}.text-muted{color:var(--text-muted)}.text-bright{color:var(--text-bright)}.text-dim{color:var(--text-dim)}
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}
.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}
.gap-1{gap:.5rem}.gap-2{gap:1rem}
.flex{display:flex}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.justify-between{justify-content:space-between}