/* ==========================================================
   সেরা হোম প্রপার্টিজ — Glassmorphism Design System
   ========================================================== */
:root{
  --navy:#0E2A4A;
  --navy-2:#173A61;
  --navy-deep:#081826;
  --gold:#C9974B;
  --gold-light:#F0D999;
  --gold-deep:#A9782E;
  --green:#3F6B4C;
  --bg:#FCFCFA;
  --ink:#1B1F27;
  --ink-soft:#5B6472;
  --glass-bg:rgba(255,255,255,.55);
  --glass-border:rgba(201,151,75,.28);
  --glass-navy:rgba(14,42,74,.6);
  --radius:22px;
  --radius-sm:14px;
  --ease:cubic-bezier(.22,1,.36,1);
  --shadow:0 10px 40px rgba(14,42,74,.10);
  --shadow-lg:0 20px 60px rgba(14,42,74,.16);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Hind Siliguri','Inter',sans-serif;
  background:var(--bg);
  color:var(--ink);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  position:relative;
}
h1,h2,h3,h4,.disp{font-family:'Baloo Da 2','Tiro Bangla',serif;font-weight:600;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
ul{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:2;}
@media(max-width:640px){.container{padding:0 20px;}}

/* ---------- Ambient mesh background blobs ---------- */
.bg-blobs{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none;}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.35;animation:blobMove 22s ease-in-out infinite;}
.blob.b1{width:480px;height:480px;background:radial-gradient(circle,var(--gold-light),transparent 70%);top:-10%;left:-8%;}
.blob.b2{width:520px;height:520px;background:radial-gradient(circle,var(--navy-2),transparent 70%);top:30%;right:-12%;opacity:.14;animation-delay:-8s;}
.blob.b3{width:400px;height:400px;background:radial-gradient(circle,var(--gold),transparent 70%);bottom:-10%;left:20%;opacity:.18;animation-delay:-14s;}
@keyframes blobMove{
  0%,100%{transform:translate(0,0) scale(1);}
  33%{transform:translate(40px,-30px) scale(1.08);}
  66%{transform:translate(-30px,20px) scale(.95);}
}
@media(max-width:768px){.blob{filter:blur(50px);opacity:.2;}}

/* ---------- Glass utility ---------- */
.glass{
  background:var(--glass-bg);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.glass-navy{
  background:linear-gradient(135deg,rgba(14,42,74,.92),rgba(23,58,97,.92));
  backdrop-filter:blur(18px);
  border:1px solid rgba(201,151,75,.35);
  color:#fff;
}

/* ---------- Scroll progress ---------- */
#scrollProgress{
  position:fixed;top:0;left:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--gold-light),var(--gold));
  background-size:200% 100%;
  animation:shimmer 3s linear infinite;
  z-index:999;width:0%;transition:width .1s ease-out;
}
@keyframes shimmer{to{background-position:-200% 0;}}

/* ---------- Cursor glow (desktop only) ---------- */
#cursorGlow{
  position:fixed;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,151,75,.16),transparent 70%);
  pointer-events:none;z-index:1;transform:translate(-50%,-50%);
  transition:opacity .3s ease;opacity:0;
}
@media(hover:hover) and (pointer:fine){#cursorGlow.active{opacity:1;}}

/* ---------- Preloader ---------- */
#preloader{
  position:fixed;inset:0;z-index:9999;background:#fff;
  display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;
  transition:opacity .6s var(--ease), visibility .6s var(--ease);
}
#preloader.hide{opacity:0;visibility:hidden;}
.preload-ring{width:64px;height:64px;position:relative;}
.preload-ring svg{width:100%;height:100%;transform:rotate(-90deg);}
.preload-ring circle{fill:none;stroke-width:3;}
.preload-ring .track{stroke:rgba(201,151,75,.18);}
.preload-ring .fill{stroke:var(--gold);stroke-linecap:round;stroke-dasharray:170;stroke-dashoffset:170;animation:ringDraw 1.1s var(--ease) forwards infinite alternate;}
@keyframes ringDraw{from{stroke-dashoffset:170;}to{stroke-dashoffset:20;}}
#preloader .pre-text{font-family:'Baloo Da 2',serif;color:var(--navy);font-size:1.05rem;letter-spacing:.04em;}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(34px) scale(.98);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal.in-view{opacity:1;transform:translateY(0) scale(1);}
.reveal-left{opacity:0;transform:translateX(-50px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal-left.in-view{opacity:1;transform:translateX(0);}
.reveal-right{opacity:0;transform:translateX(50px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal-right.in-view{opacity:1;transform:translateX(0);}
.reveal-stag > *{opacity:0;transform:translateY(28px) scale(.95);transition:opacity .65s var(--ease),transform .65s var(--ease);}
.reveal-stag.in-view > *{opacity:1;transform:translateY(0) scale(1);}
.reveal-stag.in-view > *:nth-child(1){transition-delay:.05s;}
.reveal-stag.in-view > *:nth-child(2){transition-delay:.15s;}
.reveal-stag.in-view > *:nth-child(3){transition-delay:.25s;}
.reveal-stag.in-view > *:nth-child(4){transition-delay:.35s;}
.reveal-stag.in-view > *:nth-child(5){transition-delay:.45s;}
.reveal-stag.in-view > *:nth-child(6){transition-delay:.55s;}

/* ---------- Buttons ---------- */
.btn{
  position:relative;overflow:hidden;display:inline-flex;align-items:center;gap:10px;
  padding:16px 32px;font-size:.95rem;font-weight:600;border-radius:100px;
  transition:transform .35s var(--ease), box-shadow .35s var(--ease);
  isolation:isolate;
}
.btn-gold{
  background:linear-gradient(120deg,var(--gold),var(--gold-light),var(--gold-deep),var(--gold));
  background-size:280% 100%;
  color:var(--navy-deep);
  box-shadow:0 10px 30px rgba(201,151,75,.35);
}
.btn-gold:hover{background-position:100% 0;box-shadow:0 14px 38px rgba(201,151,75,.5);transform:translateY(-3px);}
.btn-outline{border:1.5px solid rgba(14,42,74,.25);color:var(--navy);}
.btn-outline:hover{border-color:var(--navy);background:rgba(14,42,74,.05);transform:translateY(-3px);}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.4);color:#fff;}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-3px);}
.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.55);transform:scale(0);animation:rippleAnim .6s ease-out;pointer-events:none;z-index:-1;}
@keyframes rippleAnim{to{transform:scale(3.2);opacity:0;}}

/* ---------- Header ---------- */
header{position:fixed;top:0;left:0;right:0;z-index:100;padding:20px 0;transition:padding .4s var(--ease);}
.nav-shell{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 26px;border-radius:100px;
  background:transparent;border:1px solid transparent;
  transition:all .5s var(--ease);
}
header.scrolled .nav-shell{
  background:rgba(255,255,255,.65);backdrop-filter:blur(20px) saturate(160%);
  border-color:var(--glass-border);box-shadow:var(--shadow);
}
.logo{display:flex;align-items:center;gap:10px;}
.logo img{height:42px;width:42px;object-fit:contain;transition:transform .4s var(--ease);}
.logo:hover img{transform:scale(1.08) rotate(-4deg);}
.logo-text{font-family:'Baloo Da 2',serif;font-size:1.15rem;color:var(--navy);line-height:1.1;}
.logo-text small{display:block;font-family:'Hind Siliguri';font-size:.68rem;font-weight:400;color:var(--gold-deep);letter-spacing:.04em;}
.navlinks{display:flex;gap:6px;list-style:none;font-size:.92rem;font-weight:500;position:relative;}
.navlinks a{position:relative;padding:9px 18px;border-radius:100px;color:var(--navy);display:block;transition:color .3s ease;z-index:2;}
.nav-pill{
  position:absolute;top:0;height:100%;border-radius:100px;
  background:linear-gradient(120deg,var(--gold),var(--gold-light));
  transition:left .45s var(--ease),width .45s var(--ease);z-index:1;
  box-shadow:0 6px 18px rgba(201,151,75,.35);
}
.navlinks a.active{color:var(--navy-deep);font-weight:700;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.burger{display:none;width:24px;height:18px;position:relative;flex-direction:column;justify-content:space-between;}
.burger span{display:block;height:2px;width:100%;background:var(--navy);border-radius:2px;transition:.35s var(--ease);}
@media(max-width:920px){.navlinks{display:none;}.nav-cta-desktop{display:none;}.burger{display:flex;}}

.mobile-menu{
  position:fixed;inset:0;z-index:99;
  background:linear-gradient(160deg,var(--navy-deep),var(--navy));
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:26px;
  transform:translateY(-100%);transition:transform .55s var(--ease);
}
.mobile-menu.open{transform:translateY(0);}
.mobile-menu a{color:#fff;font-family:'Baloo Da 2',serif;font-size:1.6rem;}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:120px;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;}
@media(max-width:960px){.hero-grid{grid-template-columns:1fr;text-align:center;}.hero-visual{order:-1;}}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;padding:8px 18px;border-radius:100px;
  font-size:.78rem;font-weight:600;color:var(--gold-deep);margin-bottom:26px;
}
.hero-eyebrow::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--gold);animation:pulseDot 1.8s ease-in-out infinite;}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 0 rgba(201,151,75,.5);}50%{box-shadow:0 0 0 8px rgba(201,151,75,0);}}
.hero h1{font-size:clamp(2.4rem,5.4vw,4.4rem);line-height:1.15;color:var(--navy);}
.hero h1 .word{display:inline-block;opacity:0;transform:translateY(24px) rotateX(40deg);filter:blur(6px);animation:wordIn .8s var(--ease) forwards;transform-origin:bottom;}
@keyframes wordIn{to{opacity:1;transform:translateY(0) rotateX(0);filter:blur(0);}}
.hero h1 .gold-text{background:linear-gradient(120deg,var(--gold-deep),var(--gold),var(--gold-light));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p.lede{margin-top:26px;font-size:1.1rem;line-height:1.85;color:var(--ink-soft);max-width:520px;}
@media(max-width:960px){.hero p.lede{margin-left:auto;margin-right:auto;}}
.hero-actions{display:flex;gap:16px;margin-top:40px;flex-wrap:wrap;}
@media(max-width:960px){.hero-actions{justify-content:center;}}

.hero-visual{position:relative;}
.hero-card{
  padding:26px;position:relative;animation:floatY 6s ease-in-out infinite;
}
@keyframes floatY{0%,100%{transform:translateY(0);}50%{transform:translateY(-16px);}}
.hero-card .card-img{
  width:100%;aspect-ratio:4/5;border-radius:16px;overflow:hidden;position:relative;
  background:linear-gradient(150deg,var(--navy),var(--navy-2) 55%,var(--gold-deep) 140%);
}
.hero-card .card-img::after{
  content:'';position:absolute;inset:0;
  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:26px 26px;
}
.hero-badge{
  position:absolute;padding:14px 18px;display:flex;align-items:center;gap:10px;
  font-size:.85rem;font-weight:600;color:var(--navy);animation:floatY 5s ease-in-out infinite;
}
.hero-badge.b1{top:8%;left:-8%;animation-delay:-1s;}
.hero-badge.b2{bottom:10%;right:-8%;animation-delay:-3s;}
.hero-badge svg{width:20px;height:20px;color:var(--gold-deep);}
@media(max-width:640px){.hero-badge{display:none;}}

.scroll-cue{position:absolute;left:50%;bottom:36px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--ink-soft);font-size:.72rem;letter-spacing:.15em;}
.scroll-cue .dot{width:6px;height:10px;border-radius:4px;background:var(--gold);animation:bounceDot 1.6s ease-in-out infinite;}
@keyframes bounceDot{0%,100%{transform:translateY(0);opacity:1;}50%{transform:translateY(10px);opacity:.4;}}
@media(max-width:640px){.scroll-cue{display:none;}}

/* ---------- Trust badges ---------- */
.trust-strip{padding:70px 0;}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media(max-width:768px){.trust-grid{grid-template-columns:1fr;}}
.trust-card{
  padding:34px 28px;text-align:center;transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.trust-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);}
.trust-icon{
  width:64px;height:64px;border-radius:50%;margin:0 auto 20px;
  background:linear-gradient(135deg,var(--gold),var(--gold-light));
  display:flex;align-items:center;justify-content:center;
  transition:transform .5s var(--ease);
}
.trust-card:hover .trust-icon{transform:rotate(-8deg) scale(1.1);}
.trust-icon svg{width:28px;height:28px;color:var(--navy-deep);}
.trust-card h4{font-size:1.15rem;color:var(--navy);margin-bottom:8px;}
.trust-card p{font-size:.9rem;color:var(--ink-soft);line-height:1.6;}

/* ---------- Section generic ---------- */
section{padding:60px 0;position:relative;}
@media(max-width:768px){section{padding:72px 0;}}
.sec-head{max-width:640px;margin-bottom:32px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.18em;color:var(--gold-deep);margin-bottom:16px;}
.eyebrow::before{content:'';width:30px;height:2px;background:var(--gold);border-radius:2px;}
.sec-head.center .eyebrow{justify-content:center;}
.sec-head.center .eyebrow::before{display:none;}
.sec-head h2{font-size:clamp(1.9rem,3.4vw,2.7rem);color:var(--navy);line-height:1.3;}
.sec-head p{margin-top:16px;color:var(--ink-soft);line-height:1.8;font-size:1rem;}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
@media(max-width:900px){.about-grid{grid-template-columns:1fr;}}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.stat-card{
  padding:26px 22px;transition:transform .5s var(--ease);
  transform-style:preserve-3d;
}
.stat-card:hover{transform:translateY(-6px) rotateX(4deg) rotateY(-4deg);box-shadow:var(--shadow-lg);}
.stat-card .num{font-family:'Baloo Da 2',serif;font-size:2.1rem;color:var(--navy);}
.stat-card .num span{color:var(--gold-deep);}
.stat-card .lbl{margin-top:6px;font-size:.82rem;color:var(--ink-soft);}
.about-body p{color:var(--ink-soft);line-height:1.85;font-size:1rem;margin-bottom:16px;}

/* ---------- Project cards ---------- */
.projects-grid{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none;padding-bottom:6px;}
.projects-grid::-webkit-scrollbar{display:none;height:0;}
.projects-grid .project-card{flex:0 0 320px;scroll-snap-align:start;}
@media(max-width:640px){
  .projects-grid{gap:14px;}
  .projects-grid .project-card{flex:0 0 82%;}
}
.project-card{overflow:hidden;transition:transform .5s var(--ease),box-shadow .5s var(--ease);position:relative;}
.project-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg);}
.project-card .pc-img{
  aspect-ratio:4/3;overflow:hidden;position:relative;border-radius:var(--radius) var(--radius) 0 0;
  background:linear-gradient(140deg,var(--navy),var(--navy-2));
}
.project-card .pc-img img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease);}
.project-card:hover .pc-img img{transform:scale(1.12);}
.project-card .pc-body{padding:22px;}
.project-card h4{font-size:1.15rem;color:var(--navy);margin-bottom:6px;}
.project-card .loc{font-size:.82rem;color:var(--ink-soft);display:flex;align-items:center;gap:6px;margin-bottom:12px;}
.project-card .price{font-weight:700;color:var(--gold-deep);font-size:.95rem;margin-bottom:16px;}
.pc-specs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.pc-specs span{
  font-size:.74rem;font-weight:600;color:var(--navy);background:rgba(14,42,74,.06);
  padding:5px 11px;border-radius:100px;
}
.pc-actions{display:flex;flex-direction:column;gap:8px;align-items:flex-start;}
.pc-cta-pdf{display:inline-flex;align-items:center;gap:6px;color:var(--gold-deep);}
.pc-cta-pdf:hover{border-color:var(--gold);}
.project-card .pc-cta{
  display:inline-flex;align-items:center;gap:8px;font-size:.85rem;font-weight:600;color:var(--navy);
  padding-bottom:2px;border-bottom:1px solid transparent;transition:.3s ease;
}
.project-card:hover .pc-cta{border-color:var(--gold);color:var(--gold-deep);}

/* ---------- Project Video ---------- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:28px;max-width:1000px;margin:0 auto;}
.video-wrap{width:100%;}
.video-frame{position:relative;width:100%;padding-top:56.25%;border-radius:16px;overflow:hidden;background:var(--navy-deep);}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.video-title{margin-top:12px;font-size:.95rem;font-weight:600;color:var(--navy);text-align:center;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:50px;}
@media(max-width:900px){.contact-grid{grid-template-columns:1fr;}}
.contact-info-card{padding:36px;color:#fff;}
.contact-info-card h3{font-size:1.4rem;margin-bottom:10px;}
.contact-info-card p{color:rgba(255,255,255,.7);line-height:1.75;margin-bottom:28px;font-size:.95rem;}
.info-line{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px;}
.info-line svg{width:20px;height:20px;color:var(--gold-light);flex-shrink:0;margin-top:2px;}
.info-line b{display:block;font-size:.9rem;}
.info-line span{font-size:.85rem;color:rgba(255,255,255,.6);}

.contact-form-card{padding:36px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
@media(max-width:520px){.form-row{grid-template-columns:1fr;}}
.field{position:relative;margin-bottom:26px;}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.5);border:1px solid rgba(14,42,74,.15);border-radius:12px;
  padding:16px 14px 8px;font-family:inherit;font-size:.98rem;color:var(--ink);transition:border-color .3s ease,box-shadow .3s ease;
}
.field textarea{resize:none;height:90px;}
.field label{
  position:absolute;left:15px;top:15px;font-size:.95rem;color:var(--ink-soft);pointer-events:none;
  transition:.25s var(--ease);background:transparent;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 4px rgba(201,151,75,.15);}
.field input:focus + label,.field input:not(:placeholder-shown) + label,
.field textarea:focus + label,.field textarea:not(:placeholder-shown) + label{
  top:6px;font-size:.7rem;color:var(--gold-deep);font-weight:600;
}
.submit-row{display:flex;align-items:center;gap:16px;}
.spinner{width:18px;height:18px;border-radius:50%;border:2px solid rgba(255,255,255,.4);border-top-color:var(--navy-deep);animation:spin .7s linear infinite;display:none;}
.btn-gold.loading .spinner{display:inline-block;}
.btn-gold.loading .btn-label{opacity:.6;}
@keyframes spin{to{transform:rotate(360deg);}}
.form-msg{font-size:.88rem;font-weight:600;margin-top:14px;opacity:0;transform:translateY(6px);transition:.4s var(--ease);}
.form-msg.show{opacity:1;transform:translateY(0);}
.form-msg.success{color:var(--green);}
.form-msg.error{color:#b3432f;}

/* ---------- Footer ---------- */
footer{
  background:linear-gradient(160deg,var(--navy-deep),var(--navy));
  color:rgba(255,255,255,.75);padding:70px 0 30px;position:relative;overflow:hidden;
}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:50px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:36px;}}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-logo img{height:40px;}
.footer-logo span{font-family:'Baloo Da 2',serif;font-size:1.2rem;color:#fff;}
footer .tagline{font-size:.85rem;color:var(--gold-light);margin-bottom:16px;}
footer p.desc{font-size:.88rem;line-height:1.7;color:rgba(255,255,255,.55);max-width:320px;}
footer h5{color:#fff;font-size:.95rem;margin-bottom:18px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:.88rem;color:rgba(255,255,255,.6);transition:.3s ease;}
.footer-links a:hover{color:var(--gold-light);padding-left:4px;}
.social-row{display:flex;gap:12px;margin-top:18px;}
.social-row a{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.2);transition:.4s var(--ease);
}
.social-row a:hover{background:var(--gold);border-color:var(--gold);transform:translateY(-4px) scale(1.08);box-shadow:0 8px 22px rgba(201,151,75,.4);}
.social-row svg{width:16px;height:16px;}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:26px;font-size:.82rem;flex-wrap:wrap;gap:10px;}

#backToTop{
  position:fixed;bottom:28px;right:28px;width:50px;height:50px;border-radius:50%;z-index:90;
  display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;
  transition:opacity .4s ease,transform .4s ease;
}
#backToTop.show{opacity:1;pointer-events:auto;}
#backToTop:hover{transform:translateY(-4px);}
#backToTop svg{width:16px;height:16px;color:var(--navy);}
#backToTop svg.ring{position:absolute;width:50px;height:50px;transform:rotate(-90deg);}
#backToTop circle{fill:none;stroke-width:2;}
#backToTop .track{stroke:rgba(14,42,74,.12);}
#backToTop .fill{stroke:var(--gold);stroke-linecap:round;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--gold);outline-offset:3px;}

/* ==========================================================
   RESPONSIVE REFINEMENTS — mobile / tablet / laptop / desktop
   (kept at the end so these override earlier same-specificity rules)
   ========================================================== */

/* ---- Laptop / small desktop (1025–1280px): slightly tighter than large desktop ---- */
@media (max-width:1280px){
  .container{max-width:1080px;}
}

/* ---- Tablet (641–1024px) ---- */
@media (max-width:1024px){
  section{padding:80px 0;}
  .sec-head{margin-bottom:44px;}
  .hero{padding-top:110px;}
  .hero-grid{gap:44px;}
  .about-grid{gap:40px;}
  .contact-grid{gap:36px;}
  .footer-grid{gap:38px;}
  .video-grid{gap:22px;}
  .trust-strip{padding:52px 0;}
}

/* ---- Mobile (≤640px) ---- */
@media (max-width:640px){
  section{padding:52px 0;}
  .sec-head{margin-bottom:30px;}
  .sec-head p{margin-top:10px;}
  .eyebrow{margin-bottom:10px;}

  .hero{padding-top:96px;min-height:auto;padding-bottom:56px;}
  .hero-grid{gap:36px;}
  .hero-actions{margin-top:28px;gap:12px;}
  .hero p.lede{margin-top:16px;}

  .trust-strip{padding:36px 0;}
  .trust-grid{gap:14px;}
  .trust-card{padding:24px 20px;}

  .about-grid{gap:28px;}
  .about-stats{gap:10px;}
  .stat-card{padding:18px 16px;}

  .projects-grid{gap:16px;}
  .video-grid{gap:16px;}
  .gallery-grid{gap:8px;}
  .gallery-filters{margin-bottom:22px;gap:6px;}

  .contact-grid{gap:20px;}
  .contact-info-card,.contact-form-card{padding:24px;}
  .form-row{gap:10px;}
  .field{margin-bottom:18px;}

  .footer-grid{gap:26px;padding-bottom:26px;}
  footer{padding:44px 0 22px;}

  #backToTop{width:44px;height:44px;bottom:18px;right:18px;}
  #backToTop svg.ring{width:44px;height:44px;}
}

/* ---- Small mobile (≤420px) ---- */
@media (max-width:420px){
  section{padding:40px 0;}
  .sec-head{margin-bottom:24px;}
  .hero{padding-top:88px;padding-bottom:40px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{justify-content:center;}
  .btn{padding:14px 24px;font-size:.88rem;}
  .trust-card{padding:20px 16px;}
  .contact-info-card,.contact-form-card{padding:18px;}
}

/* ---- FIX: gallery filter pill breaking on mobile wrap ---- */
@media (max-width:640px){
  .gallery-filters{
    flex-wrap:nowrap;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
    padding-bottom:4px;
  }
  .gallery-filters::-webkit-scrollbar{display:none;}
  .g-filter{flex-shrink:0;white-space:nowrap;}
}

/* ---- FIX: reduce gap between Services and Trust Strip sections ---- */
#services{padding-bottom:40px;}
.trust-strip{padding-top:24px;}

/* ---- FIX: hero heading clipping on mobile (image card overlapping text + tight line-height) ---- */
.hero h1{line-height:1.35;padding-bottom:4px;}
@media(max-width:960px){
  .hero-visual{margin-bottom:24px;}
}

/* ---- FIX: header logo circular instead of square background ---- */
.logo img{border-radius:50%;object-fit:cover;background:#fff;}

/* ---- WhatsApp group join button next to submit ---- */
.submit-row{flex-wrap:wrap;}
.wa-group-btn{border-color:#25D366;color:#128C3E;}
.wa-group-btn:hover{background:rgba(37,211,102,.08);border-color:#25D366;}

/* ---- FIX: stack submit + WhatsApp group buttons on mobile, side-by-side on desktop ---- */
@media(max-width:520px){
  .submit-row{flex-direction:column;align-items:stretch;gap:12px;}
  .submit-row .btn{width:100%;justify-content:center;text-align:center;}
}

/* ---- FIX: anchor links (বিস্তারিত জানুন, nav links) should not hide under the fixed header ---- */
section[id]{scroll-margin-top:100px;}
@media(max-width:640px){section[id]{scroll-margin-top:84px;}}

/* ---- FIX: glassmorphism scrollbar on desktop (mouse), fully hidden on touch (mobile) ---- */
@media (hover:hover) and (pointer:fine){
  .projects-grid{
    scrollbar-width:thin;
    scrollbar-color:rgba(201,151,75,.6) rgba(14,42,74,.08);
  }
  .projects-grid::-webkit-scrollbar{display:block;height:8px;}
  .projects-grid::-webkit-scrollbar-track{
    background:rgba(14,42,74,.06);
    border-radius:100px;
  }
  .projects-grid::-webkit-scrollbar-thumb{
    background:linear-gradient(90deg,var(--gold),var(--gold-light));
    border-radius:100px;
    border:1px solid rgba(255,255,255,.4);
    backdrop-filter:blur(6px);
  }
  .projects-grid::-webkit-scrollbar-thumb:hover{background:var(--gold-deep);}
}

/* ---- FIX: contact section now shows form only, full width ---- */
.contact-grid-single{grid-template-columns:1fr;max-width:100%;}
.contact-grid-single .contact-form-card{width:100%;}

/* ---- WhatsApp floating button (above Back-to-top), fixed size, explicit dimensions ---- */
#whatsappFloat{
  position:fixed;top:50%;right:28px;transform:translateY(-50%);
  width:50px;height:50px;min-width:50px;min-height:50px;max-width:50px;max-height:50px;
  border-radius:50%;z-index:90;overflow:hidden;
  background:#25D366;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(37,211,102,.4);transition:transform .3s ease;
}
#whatsappFloat:hover{transform:translateY(calc(-50% - 4px)) scale(1.06);}
#whatsappFloat svg{width:26px !important;height:26px !important;flex-shrink:0;}
@media(max-width:640px){
  #whatsappFloat{width:44px;height:44px;min-width:44px;min-height:44px;max-width:44px;max-height:44px;right:18px;}
  #whatsappFloat svg{width:22px !important;height:22px !important;}
}

/* ---- FIX: prevent floating buttons from clipping on the right edge (mobile) ---- */
html{overflow-x:hidden;max-width:100%;}
body{max-width:100%;}
#whatsappFloat,#backToTop{right:max(16px, env(safe-area-inset-right, 16px));}
@media(max-width:640px){
  #whatsappFloat,#backToTop{right:max(14px, env(safe-area-inset-right, 14px));}
}

/* ---- FIX: footer logo circular (reinforced) ---- */
.footer-logo img{
  border-radius:50% !important;
  object-fit:cover !important;
  background:#fff !important;
  width:40px;height:40px;
  aspect-ratio:1/1;
  flex-shrink:0;
}

/* ---- FIX: ensure Baloo Da 2 elements use the only loaded weight (600) ---- */
.logo-text,.footer-logo span,.pre-text,.stat-card .num{font-weight:600;}