/* =========================================================
   HAYAT DIGITAL — Design System
   Palette   : Deep Indigo #150E3D · Violet #6C3CE8 · Signal Blue #2F6BFF
               Sky Cyan #4FD6FF · Lavender #F4F2FF · White #FFFFFF · Ink #171331
   Display   : "Space Grotesk"   Body: "Inter"   Utility: "JetBrains Mono"
   Signature : the Orbit Ring — client logos orbiting a central hub
   ========================================================= */

:root{
  --deep:#150E3D;
  --deep-2:#1D1354;
  --violet:#6C3CE8;
  --violet-2:#8B5CF6;
  --blue:#2F6BFF;
  --sky:#4FD6FF;
  --lav:#F4F2FF;
  --lav-2:#ECE7FF;
  --white:#FFFFFF;
  --ink:#171331;
  --ink-soft:#524C72;
  --line:#E3DEFB;
  --radius:18px;
  --radius-sm:10px;
  --maxw:1240px;
  --ease:cubic-bezier(.22,1,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

body{
  margin:0;
  font-family:'Inter',sans-serif;
  color:var(--ink);
  background:var(--white);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;}

h1,h2,h3,h4{
  font-family:'Space Grotesk',sans-serif;
  margin:0;
  line-height:1.08;
  letter-spacing:-0.01em;
  color:var(--deep);
}
p{margin:0;color:var(--ink-soft);line-height:1.7;}

.container{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
.mono{font-family:'JetBrains Mono',monospace;}

.eyebrow{
  font-family:'JetBrains Mono',monospace;
  font-size:.72rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--violet);
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:500;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--violet);
  display:inline-block;
}

section{position:relative;}
.section-pad{padding:110px 0;}
@media (max-width:780px){.section-pad{padding:70px 0;}}

/* -------- Buttons -------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 30px;border-radius:100px;
  font-weight:600;font-size:.95rem;
  border:1px solid transparent;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease),background .3s ease,color .3s ease,border-color .3s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--violet),var(--blue));
  color:#fff;
  box-shadow:0 14px 30px -12px rgba(108,60,232,.55);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 38px -14px rgba(108,60,232,.65);}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.35);
  color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-3px);}
.btn-dark{
  background:var(--deep);
  color:#fff;
}
.btn-dark:hover{transform:translateY(-3px);box-shadow:0 16px 30px -14px rgba(21,14,61,.5);}
.btn-outline{
  background:transparent;
  border-color:var(--line);
  color:var(--deep);
}
.btn-outline:hover{border-color:var(--violet);color:var(--violet);transform:translateY(-3px);}
.btn-sm{padding:11px 22px;font-size:.85rem;}
.btn[data-magnetic]{will-change:transform;}

/* -------- Header -------- */
#site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:22px 0;
  transition:padding .4s var(--ease),background .4s var(--ease),box-shadow .4s var(--ease);
}
#site-header .header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  max-width:var(--maxw);margin:0 auto;padding:0 28px;
}
#site-header.scrolled{
  padding:12px 0;
  background:rgba(21,14,61,.86);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:0 10px 30px -18px rgba(0,0,0,.4);
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  background:#fff;border-radius:12px;
  padding:6px 10px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 22px -10px rgba(0,0,0,.35);
}
.brand-mark img{height:34px;width:auto;display:block;}
.brand-word{display:none;}

.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav > li{position:relative;}
.main-nav a{
  display:flex;align-items:center;gap:6px;
  color:#fff;font-size:.92rem;font-weight:500;
  padding:10px 16px;border-radius:100px;
  transition:background .3s ease,color .3s ease;
}
.main-nav a:hover,.main-nav li.active>a{background:rgba(255,255,255,.12);}
.has-drop > a::after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-top:-3px;}
.dropdown{
  position:absolute;top:calc(100% + 10px);left:0;
  min-width:240px;
  background:#fff;border-radius:14px;
  box-shadow:0 26px 50px -20px rgba(21,14,61,.35);
  padding:8px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .35s var(--ease);
}
.has-drop:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.dropdown a{color:var(--deep);padding:11px 14px;border-radius:9px;font-size:.88rem;}
.dropdown a:hover{background:var(--lav);color:var(--violet);}

.header-actions{display:flex;align-items:center;gap:14px;}
.social-inline{display:flex;gap:8px;}
.social-inline a{
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.28);color:#fff;
  transition:all .3s ease;
}
.social-inline a:hover{background:linear-gradient(135deg,var(--violet),var(--blue));border-color:transparent;transform:translateY(-2px);}
.social-inline svg{width:15px;height:15px;fill:currentColor;}

.hamburger{
  display:none;width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(255,255,255,.3);background:transparent;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.hamburger span{width:18px;height:2px;background:#fff;display:block;transition:.3s;}

@media (max-width:1080px){
  .main-nav,.header-actions .social-inline,.header-actions .btn{display:none;}
  .hamburger{display:flex;}
  #site-header.scrolled,#site-header{background:rgba(21,14,61,.92);backdrop-filter:blur(14px);}
}

/* Mobile drawer */
.mobile-drawer{
  position:fixed;inset:0;z-index:1200;
  background:var(--deep);
  transform:translateX(100%);
  transition:transform .5s var(--ease);
  padding:100px 30px 40px;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.mobile-drawer .close-drawer{
  position:absolute;top:26px;right:28px;
  width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.3);
  background:transparent;color:#fff;font-size:1.3rem;
}
.mobile-drawer ul{display:flex;flex-direction:column;gap:6px;}
.mobile-drawer a{color:#fff;font-size:1.15rem;padding:14px 4px;display:block;border-bottom:1px solid rgba(255,255,255,.08);font-family:'Space Grotesk',sans-serif;}
.mobile-drawer .sub{padding-left:16px;}
.mobile-drawer .sub a{font-size:.95rem;color:rgba(255,255,255,.7);border-bottom:none;padding:10px 4px;}
.mobile-drawer .drawer-social{display:flex;gap:10px;margin-top:26px;}
.mobile-drawer .drawer-social a{width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;padding:0;}
.mobile-drawer .drawer-social svg{width:16px;height:16px;fill:#fff;}

/* -------- Hero (dark) -------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;align-items:center;
  padding:150px 0 90px;
  background:var(--deep);
  overflow:hidden;
  color:#fff;
}
.hero-media{position:absolute;inset:0;z-index:0;}
.hero-media video,.hero-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(21,14,61,.88) 0%,rgba(21,14,61,.78) 45%,rgba(21,14,61,.97) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;z-index:1;opacity:.35;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 50% 30%,#000 10%,transparent 70%);
}
.hero .container{position:relative;z-index:2;}
.hero-eyebrow{color:var(--sky);}
.hero-eyebrow::before{background:var(--sky);}
.hero h1{
  font-size:clamp(2.6rem,5.6vw,4.6rem);
  margin:22px 0 24px;
  max-width:16ch;
}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--sky),var(--violet-2));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p.lead{font-size:1.15rem;max-width:52ch;color:rgba(255,255,255,.78);}
.hero-cta{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:44px;margin-top:64px;flex-wrap:wrap;}
.hero-stats .stat b{font-family:'Space Grotesk',sans-serif;font-size:2rem;display:block;color:#fff;}
.hero-stats .stat span{font-size:.82rem;color:rgba(255,255,255,.55);font-family:'JetBrains Mono',monospace;letter-spacing:.04em;}

/* subpage hero (shorter) */
.page-hero{
  background:var(--deep);
  color:#fff;
  padding:168px 0 90px;
  position:relative;
  overflow:hidden;
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{font-size:clamp(2.2rem,4.6vw,3.6rem);margin:18px 0 16px;color:#fff;}
.page-hero p{max-width:60ch;color:rgba(255,255,255,.75);font-size:1.05rem;}
.page-hero .breadcrumb{margin-top:26px;font-family:'JetBrains Mono',monospace;font-size:.78rem;color:rgba(255,255,255,.55);letter-spacing:.05em;}
.page-hero .breadcrumb a{color:var(--sky);}

/* -------- Orbit Ring (signature element) -------- */
.orbit-wrap{
  position:relative;
  width:100%;max-width:460px;aspect-ratio:1/1;margin:0 auto;
}
.orbit-hub{
  position:absolute;inset:0;margin:auto;
  width:46%;aspect-ratio:1/1;border-radius:50%;
  overflow:hidden;
  border:3px solid rgba(255,255,255,.18);
  box-shadow:0 30px 70px -20px rgba(108,60,232,.6);
  z-index:3;
}
.orbit-hub img{width:100%;height:100%;object-fit:cover;}
.orbit-ring{
  position:absolute;inset:0;border-radius:50%;
  border:1px dashed rgba(255,255,255,.18);
  animation:spin 44s linear infinite;
}
.orbit-ring.ring-2{inset:9%;animation-duration:60s;animation-direction:reverse;border-color:rgba(79,214,255,.22);}
.orbit-node{
  position:absolute;width:58px;height:58px;border-radius:50%;
  background:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 14px 30px -10px rgba(0,0,0,.45);
  animation:counter-spin 44s linear infinite;
  padding:9px;
}
.orbit-ring.ring-2 .orbit-node{animation-duration:60s;animation-direction:reverse;width:46px;height:46px;padding:7px;}
.orbit-node img{width:100%;height:100%;object-fit:contain;}
@keyframes spin{from{transform:rotate(0deg);}to{transform:rotate(360deg);}}
@keyframes counter-spin{from{transform:rotate(0deg);}to{transform:rotate(-360deg);}}
@media (prefers-reduced-motion: reduce){.orbit-ring,.orbit-node{animation:none;}}
.orbit-glow{
  position:absolute;inset:-20%;
  background:radial-gradient(circle,rgba(108,60,232,.35),transparent 65%);
  filter:blur(30px);z-index:0;
}
@media (max-width:780px){.orbit-node{width:44px;height:44px;padding:7px;}.orbit-ring.ring-2 .orbit-node{width:36px;height:36px;}}

/* -------- Sections / generic -------- */
.section-head{max-width:680px;margin-bottom:56px;}
.section-head h2{font-size:clamp(1.9rem,3.4vw,2.7rem);margin-top:16px;}
.section-head p{margin-top:16px;font-size:1.05rem;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

.bg-lav{background:var(--lav);}
.bg-deep{background:var(--deep);color:#fff;}
.bg-deep h2,.bg-deep h3,.bg-deep h4{color:#fff;}
.bg-deep p{color:rgba(255,255,255,.7);}
.bg-white{background:#fff;}

/* grids */
.grid{display:grid;gap:26px;}
.grid-2{grid-template-columns:1fr 1fr;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:980px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}.grid-2{grid-template-columns:1fr;}}
@media (max-width:620px){.grid-3,.grid-4{grid-template-columns:1fr;}}

/* cards */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .4s ease;
}
.card:hover{transform:translateY(-8px);box-shadow:0 30px 60px -24px rgba(21,14,61,.22);border-color:transparent;}
.card .icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,var(--violet),var(--blue));
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
  color:#fff;
}
.card .icon svg{width:24px;height:24px;stroke:#fff;fill:none;}
.card h3{font-size:1.2rem;margin-bottom:10px;}
.card p{font-size:.95rem;}

.card-dark{
  background:linear-gradient(160deg,var(--deep-2),var(--deep));
  color:#fff;border-radius:var(--radius);padding:34px;
  border:1px solid rgba(255,255,255,.08);
  transition:transform .5s var(--ease);
}
.card-dark:hover{transform:translateY(-8px);}
.card-dark h3{color:#fff;}
.card-dark p{color:rgba(255,255,255,.65);}

/* image card / portfolio */
.media-card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  aspect-ratio:4/3;
}
.media-card img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease);}
.media-card:hover img{transform:scale(1.08);}
.media-card .media-overlay{
  position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(21,14,61,.92) 0%,rgba(21,14,61,.15) 55%,transparent 75%);
  display:flex;flex-direction:column;justify-content:flex-end;padding:26px;
  opacity:0;transition:opacity .5s ease;
}
.media-card:hover .media-overlay{opacity:1;}
.media-card .tag{
  align-self:flex-start;
  font-family:'JetBrains Mono',monospace;font-size:.68rem;letter-spacing:.08em;
  color:var(--sky);text-transform:uppercase;margin-bottom:10px;
  background:rgba(255,255,255,.12);padding:5px 10px;border-radius:100px;
}
.media-card h4{color:#fff;font-size:1.15rem;}

/* logos strip */
.logo-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:20px;
}
.logo-strip .logo-chip{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px 22px;height:82px;width:150px;
  display:flex;align-items:center;justify-content:center;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
  filter:grayscale(15%);
}
.logo-strip .logo-chip:hover{transform:translateY(-6px);box-shadow:0 20px 40px -18px rgba(21,14,61,.25);filter:none;}
.logo-strip img{max-height:46px;max-width:110px;object-fit:contain;}

/* stats band */
.stats-band{
  background:linear-gradient(120deg,var(--deep),var(--deep-2));
  color:#fff;border-radius:24px;padding:56px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:30px;
  position:relative;overflow:hidden;
}
.stats-band::before{
  content:"";position:absolute;top:-40%;right:-10%;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,60,232,.45),transparent 70%);filter:blur(20px);
}
.stats-band .stat{position:relative;z-index:1;text-align:center;}
.stats-band .stat b{font-family:'Space Grotesk',sans-serif;font-size:2.5rem;display:block;}
.stats-band .stat span{font-family:'JetBrains Mono',monospace;font-size:.76rem;letter-spacing:.05em;color:rgba(255,255,255,.6);}
@media (max-width:780px){.stats-band{grid-template-columns:repeat(2,1fr);}}

/* timeline (resume) */
.timeline{border-left:2px solid var(--line);padding-left:34px;display:flex;flex-direction:column;gap:38px;}
.timeline .item{position:relative;}
.timeline .item::before{
  content:"";position:absolute;left:-42px;top:4px;width:14px;height:14px;border-radius:50%;
  background:linear-gradient(135deg,var(--violet),var(--blue));box-shadow:0 0 0 5px var(--lav);
}
.timeline .item .role{font-family:'Space Grotesk',sans-serif;font-size:1.1rem;color:var(--deep);}
.timeline .item .meta{font-family:'JetBrains Mono',monospace;font-size:.76rem;color:var(--violet);letter-spacing:.04em;margin:6px 0;text-transform:uppercase;}
.timeline .item .place{font-size:.92rem;color:var(--ink-soft);}

/* CTA band */
.cta-band{
  background:linear-gradient(120deg,var(--violet),var(--blue));
  border-radius:28px;padding:70px 50px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,rgba(255,255,255,.25),transparent 55%);}
.cta-band h2{color:#fff;font-size:clamp(1.7rem,3vw,2.3rem);max-width:16ch;position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.85);margin-top:12px;max-width:44ch;position:relative;z-index:1;}
.cta-band .btn-dark{position:relative;z-index:1;background:var(--deep);}

/* forms */
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:40px;box-shadow:0 40px 80px -40px rgba(21,14,61,.25);
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:.82rem;font-weight:600;margin-bottom:8px;color:var(--deep);font-family:'JetBrains Mono',monospace;letter-spacing:.03em;text-transform:uppercase;font-size:.72rem;}
.field input,.field select,.field textarea{
  width:100%;padding:14px 16px;border-radius:11px;border:1.5px solid var(--line);
  background:var(--lav);color:var(--ink);font-size:.95rem;
  transition:border-color .3s ease,background .3s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--violet);background:#fff;}
.field textarea{resize:vertical;min-height:120px;}
.form-note{font-size:.82rem;color:var(--ink-soft);margin-top:14px;}
.form-success{display:none;background:var(--lav-2);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-top:16px;color:var(--deep);font-size:.9rem;}
.form-success.show{display:block;}

/* footer */
footer{background:var(--deep);color:rgba(255,255,255,.7);padding:80px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:50px;border-bottom:1px solid rgba(255,255,255,.1);}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h4{color:#fff;font-size:.85rem;font-family:'JetBrains Mono',monospace;letter-spacing:.08em;text-transform:uppercase;margin-bottom:18px;}
.footer-grid ul{display:flex;flex-direction:column;gap:11px;}
.footer-grid a{font-size:.92rem;transition:color .3s ease;}
.footer-grid a:hover{color:var(--sky);}
.footer-brand p{max-width:34ch;margin-top:14px;color:rgba(255,255,255,.6);}
.footer-social{display:flex;gap:10px;margin-top:22px;}
.footer-social a{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;}
.footer-social svg{width:15px;height:15px;fill:#fff;}
.footer-social a:hover{background:linear-gradient(135deg,var(--violet),var(--blue));border-color:transparent;}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:26px;flex-wrap:wrap;gap:14px;font-size:.82rem;}
.footer-bottom a:hover{color:var(--sky);}

/* animations */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal.in{opacity:1;transform:translateY(0);}
.reveal-stagger .stagger-child{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal-stagger.in .stagger-child{opacity:1;transform:translateY(0);}

/* cursor glow */
.cursor-glow{
  position:fixed;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,60,232,.4) 0%,rgba(79,214,255,.22) 35%,transparent 72%);
  pointer-events:none;z-index:4;transform:translate(-50%,-50%);
  left:0;top:0;opacity:0;transition:opacity .4s ease;
  mix-blend-mode:normal;
}
@media (max-width:1080px){.cursor-glow{display:none;}}

/* utility */
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--lav);color:var(--violet);
  font-family:'JetBrains Mono',monospace;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;
  padding:7px 14px;border-radius:100px;margin-bottom:8px;
}
.divider{height:1px;background:var(--line);width:100%;}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
@media (max-width:900px){.two-col{grid-template-columns:1fr;gap:40px;}}
.list-check{display:flex;flex-direction:column;gap:14px;margin-top:22px;}
.list-check li{display:flex;align-items:flex-start;gap:12px;font-size:.96rem;color:var(--ink-soft);}
.list-check svg{flex:none;width:20px;height:20px;margin-top:2px;color:var(--violet);}

.floaty{animation:floaty 6s ease-in-out infinite;}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-14px);}}

.back-to-top{
  position:fixed;bottom:28px;right:28px;z-index:900;
  width:48px;height:48px;border-radius:50%;
  background:var(--deep);color:#fff;border:none;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .4s var(--ease);
  box-shadow:0 14px 30px -12px rgba(21,14,61,.5);
}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0);}