/* ==========================================================================
   UWNSI — Pankaj Kumar Developer Portfolio
   Design tokens, base styles, sections, animations, dark mode
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root{
  --primary:#2563EB;
  --secondary:#1E40AF;
  --accent:#38BDF8;
  --dark:#0F172A;
  --light:#F8FAFC;

  --bg:#F8FAFC;
  --bg-alt:#EFF3FA;
  --surface:#FFFFFF;
  --text:#0F172A;
  --text-muted:#5B6B85;
  --border:#E3E8F1;

  --font-body:'Poppins', sans-serif;
  --font-mono:'JetBrains Mono', monospace;

  --radius:16px;
  --radius-sm:10px;
  --shadow-soft:0 10px 30px -12px rgba(15,23,42,.12);
  --shadow-lift:0 20px 45px -15px rgba(37,99,235,.35);
  --grad-primary:linear-gradient(135deg,var(--primary),var(--accent));
  --grad-dark:linear-gradient(135deg,#0F172A,#1E293B);
  --transition:.35s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"]{
  --bg:#0B1220;
  --bg-alt:#0F172A;
  --surface:#141F35;
  --text:#F1F5F9;
  --text-muted:#94A3B8;
  --border:#243149;
  --shadow-soft:0 10px 30px -12px rgba(0,0,0,.5);
}

*{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  overflow-x:hidden;
  transition:background var(--transition),color var(--transition);
}

.text-mono{font-family:var(--font-mono);}

a{text-decoration:none;color:inherit;}
ul{list-style:none;margin:0;padding:0;}

::selection{background:var(--primary);color:#fff;}

/* ---------- Utility / section shells ---------- */
.section-padding{padding:6.5rem 0;}
.section-alt{background:var(--bg-alt);}

.section-head{max-width:680px;margin:0 auto 1rem;}
.section-eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--primary);
  background:rgba(37,99,235,.09);
  padding:.35rem .9rem;
  border-radius:100px;
  margin-bottom:1rem;
}
.section-title{
  font-size:clamp(1.7rem,3.4vw,2.5rem);
  font-weight:700;
  line-height:1.25;
  margin-bottom:.9rem;
}
.section-subtitle{color:var(--text-muted);font-size:1.05rem;}

.text-gradient{
  background:var(--grad-primary);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

/* ---------- Buttons ---------- */
.btn-primary-custom{
  background:var(--grad-primary);
  color:#fff !important;
  border:none;
  padding:.85rem 1.7rem;
  border-radius:100px;
  font-weight:600;
  font-size:.95rem;
  box-shadow:var(--shadow-lift);
  transition:transform var(--transition),box-shadow var(--transition);
  position:relative;
  overflow:hidden;
}
.btn-primary-custom:hover{transform:translateY(-3px);box-shadow:0 25px 50px -15px rgba(37,99,235,.5);color:#fff;}

.btn-outline-custom{
  background:transparent;
  color:var(--text) !important;
  border:1.5px solid var(--border);
  padding:.85rem 1.7rem;
  border-radius:100px;
  font-weight:600;
  font-size:.95rem;
  transition:all var(--transition);
}
.btn-outline-custom:hover{border-color:var(--primary);background:rgba(37,99,235,.06);transform:translateY(-3px);}

.btn-icon-outline{
  border:1.5px solid var(--border);
  border-radius:100px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  color:var(--text);
  transition:all var(--transition);
}
.btn-icon-outline:hover{border-color:var(--primary);color:var(--primary);}

/* Ripple effect */
.ripple{position:relative;overflow:hidden;}
.ripple-circle{
  position:absolute;
  border-radius:50%;
  background:rgba(255,255,255,.55);
  transform:scale(0);
  animation:rippleAnim .6s ease-out;
  pointer-events:none;
}
.btn-outline-custom .ripple-circle{background:rgba(37,99,235,.25);}
@keyframes rippleAnim{to{transform:scale(3);opacity:0;}}

/* ==========================================================================
   Loader
   ========================================================================== */
.loader-screen{
  position:fixed;inset:0;z-index:9999;
  background:var(--dark);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .6s ease,visibility .6s ease;
}
.loader-screen.hidden{opacity:0;visibility:hidden;}
.loader-terminal{
  font-family:var(--font-mono);
  color:var(--accent);
  font-size:1.3rem;
  letter-spacing:.5px;
}
.loader-prompt{color:#4ADE80;margin-right:.5rem;}
.loader-cursor{animation:blink 1s step-end infinite;color:#fff;}
@keyframes blink{50%{opacity:0;}}

/* ==========================================================================
   Scroll progress bar
   ========================================================================== */
.scroll-progress{position:fixed;top:0;left:0;width:100%;height:3px;z-index:1051;background:transparent;}
.scroll-progress-bar{height:100%;width:0%;background:var(--grad-primary);transition:width .1s linear;}

/* ==========================================================================
   Custom cursor (desktop only)
   ========================================================================== */
.custom-cursor,.custom-cursor-ring{
  position:fixed;top:0;left:0;pointer-events:none;z-index:9998;
  border-radius:50%;transform:translate(-50%,-50%);
  display:none;
}
.custom-cursor{width:8px;height:8px;background:var(--primary);}
.custom-cursor-ring{width:34px;height:34px;border:1.5px solid rgba(37,99,235,.5);transition:width .2s,height .2s,border-color .2s;}
@media (hover:hover) and (pointer:fine){
  .custom-cursor,.custom-cursor-ring{display:block;}
}
.custom-cursor-ring.grow{width:52px;height:52px;border-color:var(--accent);}

/* ==========================================================================
   Navbar
   ========================================================================== */
.custom-navbar{
  padding:1.15rem 0;
  background:transparent;
  transition:all var(--transition);
}
.custom-navbar.scrolled{
  padding:.7rem 0;
  background:rgba(248,250,252,.85);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-soft);
}
[data-theme="dark"] .custom-navbar.scrolled{background:rgba(11,18,32,.85);}

.brand-logo{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:1.25rem;
  color:var(--text);
  letter-spacing:.5px;
}
.brand-tag{color:var(--primary);}

.nav-link{
  color:var(--text) !important;
  font-weight:500;
  font-size:.95rem;
  position:relative;
  padding:.5rem .9rem !important;
}
.nav-link::after{
  content:"";
  position:absolute;left:.9rem;right:.9rem;bottom:.15rem;height:2px;
  background:var(--grad-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--transition);
}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary) !important;}

.theme-toggle{
  width:40px;height:40px;border-radius:50%;
  border:1.5px solid var(--border);
  background:var(--surface);
  color:var(--text);
  display:flex;align-items:center;justify-content:center;
  transition:all var(--transition);
}
.theme-toggle:hover{border-color:var(--primary);color:var(--primary);transform:rotate(15deg);}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero-section{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  padding-top:6rem;
  overflow:hidden;
  background:var(--bg);
}
.hero-bg-gradient{
  position:absolute;inset:0;
  background:radial-gradient(ellipse 60% 50% at 80% 10%,rgba(56,189,248,.16),transparent 60%),
             radial-gradient(ellipse 50% 40% at 10% 90%,rgba(37,99,235,.12),transparent 60%);
  z-index:0;
}
.hero-grid-overlay{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(37,99,235,.05) 1px,transparent 1px),
                    linear-gradient(90deg,rgba(37,99,235,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,black,transparent);
  z-index:0;
}
.hero-blob{
  position:absolute;border-radius:50%;
  filter:blur(70px);
  opacity:.35;
  z-index:0;
  animation:blobFloat 12s ease-in-out infinite;
}
.blob-1{width:340px;height:340px;background:var(--primary);top:8%;right:8%;}
.blob-2{width:260px;height:260px;background:var(--accent);bottom:5%;left:2%;animation-delay:3s;}
@keyframes blobFloat{
  0%,100%{transform:translate(0,0) scale(1);}
  50%{transform:translate(-25px,25px) scale(1.08);}
}

.hero-inner{position:relative;z-index:2;}

.hero-eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  font-family:var(--font-mono);
  font-size:.82rem;
  padding:.4rem .9rem;
  border-radius:100px;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text-muted);
  margin-bottom:1.5rem;
}
.status-dot{width:8px;height:8px;border-radius:50%;background:#4ADE80;box-shadow:0 0 0 3px rgba(74,222,128,.25);animation:pulseDot 2s infinite;}
@keyframes pulseDot{0%,100%{opacity:1;}50%{opacity:.4;}}

.hero-heading{
  font-size:clamp(2.2rem,5vw,3.4rem);
  font-weight:700;
  line-height:1.15;
  margin-bottom:1.3rem;
}
.hero-desc{font-size:1.1rem;color:var(--text-muted);max-width:520px;}

.hero-typing-line{
  margin-top:1.4rem;
  font-size:.95rem;
  color:var(--accent);
  min-height:1.4rem;
}
.hero-typing-prefix{color:#4ADE80;}
.typing-caret{animation:blink 1s step-end infinite;color:var(--text);}

.hero-stats-row .hero-stat-num{display:block;font-size:1.5rem;font-weight:700;font-family:var(--font-mono);}
.hero-stats-row .hero-stat-label{display:block;font-size:.82rem;color:var(--text-muted);}

/* Hero illustration: code window */
.hero-illustration{position:relative;padding:1rem;}
.code-window{
  background:#0F172A;
  border-radius:14px;
  box-shadow:0 30px 60px -20px rgba(15,23,42,.45);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.06);
}
.code-window-bar{
  display:flex;align-items:center;gap:.4rem;
  padding:.7rem 1rem;
  background:#151F32;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.dot{width:11px;height:11px;border-radius:50%;}
.dot-red{background:#F87171;} .dot-yellow{background:#FBBF24;} .dot-green{background:#4ADE80;}
.code-window-title{margin-left:.6rem;color:#94A3B8;font-size:.78rem;}
.code-window-body{padding:1.3rem 1.4rem;font-size:.85rem;line-height:1.75;overflow-x:auto;}
.code-window-body pre{margin:0;white-space:pre-wrap;word-break:break-word;color:#CBD5E1;}
.c-comment{color:#64748B;}
.c-key{color:#38BDF8;}
.c-str{color:#4ADE80;}
.c-fn{color:#F472B6;}
.c-fnname{color:#FBBF24;}
.c-ok{color:#4ADE80;}

.floating{animation:floatY 5s ease-in-out infinite;}
@keyframes floatY{0%,100%{transform:translateY(0);}50%{transform:translateY(-14px);}}

.floating-badge{
  position:absolute;
  background:var(--surface);
  border:1px solid var(--border);
  box-shadow:var(--shadow-soft);
  padding:.5rem .9rem;
  border-radius:100px;
  font-family:var(--font-mono);
  font-size:.8rem;
  font-weight:600;
  display:flex;align-items:center;gap:.4rem;
}
.badge-aws{top:-4%;left:-4%;color:#EA580C;}
.badge-php{bottom:6%;right:-4%;color:#6366F1;}
.badge-py{top:38%;right:-8%;color:#38BDF8;}
.floating-1{animation:floatY 4.2s ease-in-out infinite;}
.floating-2{animation:floatY 5.4s ease-in-out infinite .3s;}
.floating-3{animation:floatY 4.8s ease-in-out infinite .6s;}

.scroll-down-indicator{
  position:absolute;left:50%;bottom:2rem;transform:translateX(-50%);
  width:36px;height:36px;border-radius:50%;
  border:1.5px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-muted);
  animation:bounceDown 2s infinite;
  z-index:2;
}
@keyframes bounceDown{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,8px);}}

/* ==========================================================================
   Marquee
   ========================================================================== */
.marquee-section{
  background:var(--dark);
  padding:1.4rem 0;
  overflow:hidden;
  white-space:nowrap;
}
.marquee-track{display:flex;width:max-content;animation:marqueeScroll 28s linear infinite;}
.marquee-track:hover{animation-play-state:paused;}
.marquee-group{display:flex;}
.marquee-item{
  display:inline-flex;align-items:center;gap:.6rem;
  color:#CBD5E1;
  font-family:var(--font-mono);
  font-size:1rem;
  padding:0 2rem;
  border-right:1px solid rgba(255,255,255,.1);
}
.marquee-item i{color:var(--accent);}
@keyframes marqueeScroll{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* ==========================================================================
   About cards
   ========================================================================== */
.about-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem 1.7rem;
  height:100%;
  box-shadow:var(--shadow-soft);
  transition:transform var(--transition),box-shadow var(--transition);
}
.about-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lift);}
.about-icon{
  width:54px;height:54px;border-radius:14px;
  background:var(--grad-primary);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;
  margin-bottom:1.1rem;
}
.about-card h3{font-size:1.15rem;font-weight:600;margin-bottom:.5rem;}
.about-card p{color:var(--text-muted);font-size:.94rem;margin:0;}

/* ==========================================================================
   Skills
   ========================================================================== */
.skill-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  height:100%;
  box-shadow:var(--shadow-soft);
}
.skill-card h4{font-size:1.05rem;font-weight:600;margin-bottom:1.4rem;display:flex;align-items:center;gap:.5rem;}
.skill-card h4 i{color:var(--primary);}
.skill-bar-item{margin-bottom:1.2rem;}
.skill-bar-item:last-child{margin-bottom:0;}
.skill-bar-label{display:flex;justify-content:space-between;font-size:.87rem;margin-bottom:.4rem;color:var(--text-muted);}
.skill-bar-track{height:8px;border-radius:100px;background:var(--bg-alt);overflow:hidden;}
.skill-bar-fill{
  height:100%;width:0%;
  border-radius:100px;
  background:var(--grad-primary);
  transition:width 1.4s cubic-bezier(.4,0,.2,1);
}

.skill-chip-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.8rem;
  box-shadow:var(--shadow-soft);
}
.skill-chip{
  font-family:var(--font-mono);
  font-size:.82rem;
  padding:.5rem 1rem;
  border-radius:100px;
  background:var(--bg-alt);
  border:1px solid var(--border);
  color:var(--text);
  transition:all var(--transition);
}
.skill-chip:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}

/* ==========================================================================
   Services
   ========================================================================== */
.service-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2.1rem 1.8rem;
  height:100%;
  box-shadow:var(--shadow-soft);
  transition:all var(--transition);
}
.hover-lift:hover{transform:translateY(-10px);box-shadow:var(--shadow-lift);border-color:transparent;}
.service-icon{
  width:56px;height:56px;border-radius:14px;
  background:rgba(37,99,235,.09);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;
  margin-bottom:1.2rem;
  transition:all var(--transition);
}
.service-card:hover .service-icon{background:var(--grad-primary);color:#fff;transform:rotate(-8deg) scale(1.05);}
.service-card h3{font-size:1.15rem;font-weight:600;margin-bottom:.6rem;}
.service-card p{color:var(--text-muted);font-size:.93rem;margin:0;}

/* ==========================================================================
   Projects
   ========================================================================== */
.filter-btn{
  font-family:var(--font-mono);
  font-size:.85rem;
  padding:.55rem 1.3rem;
  border-radius:100px;
  border:1.5px solid var(--border);
  background:var(--surface);
  color:var(--text-muted);
  transition:all var(--transition);
}
.filter-btn.active,.filter-btn:hover{background:var(--grad-primary);color:#fff;border-color:transparent;}

.project-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  height:100%;
  box-shadow:var(--shadow-soft);
  transition:all var(--transition);
}
.project-thumb{
  height:150px;
  background:var(--grad-dark);
  display:flex;align-items:center;justify-content:center;
  position:relative;
  overflow:hidden;
}
.project-thumb::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 30% 20%,rgba(56,189,248,.25),transparent 60%);
}
.project-thumb-inner{font-size:2.4rem;color:var(--accent);position:relative;z-index:1;}
.project-body{padding:1.5rem;}
.project-body h3{font-size:1.05rem;font-weight:600;margin-bottom:.5rem;}
.project-body p{color:var(--text-muted);font-size:.88rem;margin-bottom:1rem;}
.tech-badge{
  font-family:var(--font-mono);
  font-size:.72rem;
  padding:.3rem .7rem;
  border-radius:100px;
  background:var(--bg-alt);
  border:1px solid var(--border);
  color:var(--text-muted);
}
.project-item{transition:opacity .35s ease,transform .35s ease;}
.project-item.hide{display:none;}

/* ==========================================================================
   Timeline
   ========================================================================== */
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:2rem;}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(var(--border),var(--border));
}
.timeline-item{position:relative;padding-bottom:2.6rem;padding-left:1.8rem;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{
  position:absolute;left:-2rem;top:4px;
  width:20px;height:20px;border-radius:50%;
  background:var(--surface);
  border:3px solid var(--primary);
  box-shadow:0 0 0 5px rgba(37,99,235,.1);
}
.timeline-content{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:1.4rem 1.6rem;
  box-shadow:var(--shadow-soft);
}
.timeline-date{display:inline-block;color:var(--primary);font-size:.8rem;margin-bottom:.4rem;}
.timeline-content h3{font-size:1.1rem;font-weight:600;margin-bottom:.4rem;}
.timeline-content p{color:var(--text-muted);font-size:.92rem;margin:0;}

/* ==========================================================================
   Stats
   ========================================================================== */
.stats-section{
  background:var(--grad-dark);
  padding:4.5rem 0;
  position:relative;
  overflow:hidden;
}
.stat-number{
  font-family:var(--font-mono);
  font-size:clamp(2.2rem,4vw,3rem);
  font-weight:700;
  color:#fff;
  background:linear-gradient(135deg,#fff,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{color:#94A3B8;font-size:.92rem;margin-top:.3rem;}

/* ==========================================================================
   Testimonials
   ========================================================================== */
.testimonial-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  height:100%;
  box-shadow:var(--shadow-soft);
  position:relative;
}
.testimonial-quote-icon{font-size:1.8rem;color:var(--accent);opacity:.5;}
.testimonial-card p{margin:1rem 0 1.5rem;color:var(--text-muted);font-size:.94rem;font-style:italic;}
.testimonial-author{display:flex;align-items:center;gap:.8rem;}
.testimonial-avatar{
  width:44px;height:44px;border-radius:50%;
  background:var(--grad-primary);
  color:#fff;font-weight:600;font-size:.85rem;
  display:flex;align-items:center;justify-content:center;
}
.testimonial-author div strong{display:block;font-size:.92rem;}
.testimonial-author div span{font-size:.8rem;color:var(--text-muted);}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-info-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  height:100%;
  box-shadow:var(--shadow-soft);
}
.contact-info-item{display:flex;align-items:center;gap:1rem;padding:.9rem 0;border-bottom:1px dashed var(--border);}
.contact-info-item:last-child{border-bottom:none;}
.contact-info-icon{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  background:rgba(37,99,235,.09);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.contact-info-item span{display:block;font-size:.78rem;color:var(--text-muted);}
.contact-info-item strong{font-size:.94rem;}

.contact-form{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  box-shadow:var(--shadow-soft);
}
.form-label{font-size:.85rem;font-weight:500;color:var(--text-muted);margin-bottom:.4rem;}
.custom-input{
  background:var(--bg-alt);
  border:1.5px solid var(--border);
  border-radius:var(--radius-sm);
  padding:.75rem 1rem;
  color:var(--text);
  font-size:.92rem;
}
.custom-input:focus{
  background:var(--surface);
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(37,99,235,.12);
  color:var(--text);
}
.form-success-msg{
  display:none;
  margin-top:1rem;
  color:#16A34A;
  font-size:.9rem;
  align-items:center;
  gap:.4rem;
}
.form-success-msg.show{display:flex;}

/* ==========================================================================
   Sticky CTA
   ========================================================================== */
.sticky-cta{
  position:fixed;right:1.6rem;bottom:6rem;z-index:1040;
  opacity:0;transform:translateY(20px);pointer-events:none;
  transition:all var(--transition);
}
.sticky-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.sticky-cta a{
  display:flex;align-items:center;gap:.5rem;
  background:var(--grad-primary);
  color:#fff;
  padding:.8rem 1.3rem;
  border-radius:100px;
  font-weight:600;
  font-size:.88rem;
  box-shadow:var(--shadow-lift);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer-section{
  background:var(--dark);
  color:#CBD5E1;
  padding:4.5rem 0 2rem;
}
.footer-brand{color:#fff;display:inline-block;margin-bottom:1rem;}
.footer-about{color:#94A3B8;font-size:.9rem;line-height:1.7;}
.footer-section h5{color:#fff;font-size:.95rem;margin-bottom:1.1rem;}
.footer-links li{margin-bottom:.65rem;}
.footer-links a{color:#94A3B8;font-size:.9rem;transition:color var(--transition);}
.footer-links a:hover{color:var(--accent);}
.footer-social{display:flex;gap:.7rem;margin-top:1rem;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;
  color:#CBD5E1;
  transition:all var(--transition);
}
.footer-social a:hover{background:var(--grad-primary);border-color:transparent;color:#fff;transform:translateY(-3px);}
.footer-divider{border-color:rgba(255,255,255,.1);margin:2.5rem 0 1.5rem;}
.footer-copy{font-size:.82rem;color:#64748B;}

/* ==========================================================================
   Back to top
   ========================================================================== */
.back-to-top{
  position:fixed;right:1.6rem;bottom:1.6rem;z-index:1040;
  width:46px;height:46px;border-radius:50%;
  background:var(--surface);
  border:1.5px solid var(--border);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-soft);
  opacity:0;transform:translateY(20px);pointer-events:none;
  transition:all var(--transition);
}
.back-to-top.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.back-to-top:hover{background:var(--grad-primary);color:#fff;border-color:transparent;}

/* ==========================================================================
   Scroll reveal animations
   ========================================================================== */
.reveal-up,.reveal-left,.reveal-right{opacity:0;transition:opacity .7s ease,transform .7s ease;}
.reveal-up{transform:translateY(36px);}
.reveal-left{transform:translateX(-40px);}
.reveal-right{transform:translateX(40px);}
.reveal-up.in-view,.reveal-left.in-view,.reveal-right.in-view{opacity:1;transform:translate(0,0);}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* ==========================================================================
   Focus visibility (accessibility)
   ========================================================================== */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:991px){
  .section-padding{padding:4.5rem 0;}
  .hero-section{min-height:auto;padding:8rem 0 5rem;}
  .navbar-collapse{
    background:var(--surface);
    margin-top:1rem;
    padding:1.2rem;
    border-radius:var(--radius-sm);
    border:1px solid var(--border);
  }
  .hero-illustration{margin-top:2.5rem;}
}

@media (max-width:575px){
  .section-padding{padding:3.5rem 0;}
  .hero-heading{font-size:2rem;}
  .code-window-body{font-size:.72rem;}
  .sticky-cta{display:none;}
}