/* ============================================================================
   ডিজিটাল আইটি সলিউশন — মূল স্টাইলশিট
   রঙ, হরফ, ছন্দ — সব উপরের ভেরিয়েবলে। এক জায়গায় বদলালেই পুরো সাইট বদলাবে।
   ============================================================================ */

:root{
  --brand:#1b46c2;
  --brand-dk:#0b2a6b;
  --ink:#0b1b3a;
  --accent:#00b39f;
  --gold:#f4a623;
  --muted:#5f6f8c;
  --bg:#f5f8fd;
  --card:#ffffff;
  --line:#e3e9f4;
  --ok:#0f9d58;
  --err:#d93025;
  --shadow:0 2px 4px rgba(11,27,58,.04), 0 12px 28px rgba(11,27,58,.07);
  --shadow-lg:0 6px 12px rgba(11,27,58,.06), 0 24px 52px rgba(11,27,58,.12);
  --radius:16px;
  --radius-sm:10px;
  --wrap:1160px;
  --font:'Hind Siliguri','Noto Sans Bengali','SolaimanLipi',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dk)}
h1,h2,h3,h4{line-height:1.45;margin:0 0 .6em;font-weight:600;letter-spacing:-.2px}
h1{font-size:clamp(1.9rem,4.4vw,3.05rem);font-weight:700;line-height:1.35}
h2{font-size:clamp(1.45rem,3vw,2.1rem)}
h3{font-size:1.16rem}
p{margin:0 0 1rem}
ul{margin:0 0 1rem;padding-left:1.15rem}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:10px 16px;border-radius:8px;box-shadow:var(--shadow)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- হেডার ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.topbar .wrap{display:flex;align-items:center;gap:18px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-dk));color:#fff;flex:0 0 auto;
  box-shadow:0 6px 16px rgba(27,70,194,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:1.12rem;font-weight:700}
.brand-text em{font-style:normal;font-size:.76rem;color:var(--muted);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.mainnav{margin-left:auto}
.mainnav ul{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.mainnav a{
  display:block;padding:9px 13px;border-radius:9px;color:#31435f;
  font-size:.94rem;font-weight:500;transition:.16s;
}
.mainnav a:hover{background:#eef3fd;color:var(--brand)}
.mainnav a.on{color:var(--brand);background:#e8effe;font-weight:600}
.topact{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:11px;cursor:pointer;padding:0;margin-left:auto}
.menu-btn span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;transition:.2s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- বোতাম ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:11px;border:1px solid transparent;
  font-family:inherit;font-size:.98rem;font-weight:600;cursor:pointer;
  transition:.18s;text-align:center;line-height:1.5;
}
.btn-sm{padding:9px 16px;font-size:.88rem;border-radius:9px}
.btn-primary{background:linear-gradient(140deg,var(--brand),var(--brand-dk));color:#fff;box-shadow:0 8px 22px rgba(27,70,194,.28)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(27,70,194,.36)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{color:#fff;transform:translateY(-2px)}
.btn-ghost{background:#fff;border-color:var(--line);color:#31435f}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-line{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-block{width:100%}
.ic{flex:0 0 auto;vertical-align:-2px}
.ic-wrap{display:inline-flex;align-items:center}

/* ---------- হিরো ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,#0a1f4d 0%,#12306e 45%,#1b46c2 100%);
  padding:clamp(56px,8vw,96px) 0 clamp(64px,9vw,104px);
}
.hero::before,.hero::after{content:'';position:absolute;border-radius:50%;pointer-events:none}
.hero::before{width:520px;height:520px;top:-190px;right:-140px;background:radial-gradient(circle,rgba(0,179,159,.32),transparent 68%)}
.hero::after{width:400px;height:400px;bottom:-190px;left:-120px;background:radial-gradient(circle,rgba(244,166,35,.18),transparent 68%)}
.hero .wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);
  padding:7px 15px;border-radius:99px;font-size:.84rem;font-weight:500;
}
.hero h1{color:#fff;margin-bottom:16px}
.hero p.lead{font-size:1.06rem;color:#cfe0ff;max-width:56ch;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:38px;max-width:560px}
.hstat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:13px;padding:14px 16px}
.hstat b{display:block;font-size:1.5rem;font-weight:700;line-height:1.2}
.hstat span{font-size:.8rem;color:#bcd2f7}

/* হিরোর পাশের কার্ড */
.hero-side{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:24px;backdrop-filter:blur(6px)}
.hero-side h3{color:#fff;font-size:1rem;margin-bottom:16px}
.hero-side ul{list-style:none;padding:0;margin:0}
.hero-side li{display:flex;align-items:center;gap:11px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:.94rem;color:#e5eeff}
.hero-side li:last-child{border-bottom:0}
.hero-side li .ic-wrap{color:var(--accent)}

/* ---------- সাধারণ অংশ ---------- */
.section{padding:clamp(52px,7vw,84px) 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin:0 auto clamp(32px,4vw,48px);text-align:center}
.section-head .kick{
  display:inline-block;font-size:.82rem;font-weight:600;letter-spacing:.6px;
  color:var(--brand);background:#e8effe;padding:6px 14px;border-radius:99px;margin-bottom:14px;
}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--muted);margin:0}
.section-head.left{margin-left:0;text-align:left}

.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:.2s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cfdcf5}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem;margin-bottom:0}

.svc-card .svc-ic{
  width:54px;height:54px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(140deg,#e8effe,#dbe7ff);color:var(--brand);
}
.svc-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:.9rem;font-weight:600}

/* ---------- পোর্টফোলিও ---------- */
.pf-card{padding:0;overflow:hidden}
.pf-thumb{position:relative;aspect-ratio:16/10;background:#e8effe;overflow:hidden}
.pf-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.pf-card:hover .pf-thumb img{transform:scale(1.05)}
.pf-thumb .ph{width:100%;height:100%;display:grid;place-items:center;color:#9fb4dd;background:linear-gradient(140deg,#eef3fd,#dde7fa)}
.pf-body{padding:20px}
.pf-body h3{font-size:1.06rem;margin-bottom:6px}
.pf-body p{font-size:.92rem;color:var(--muted);margin-bottom:12px}
.chip{
  display:inline-block;font-size:.76rem;font-weight:600;padding:4px 11px;border-radius:99px;
  background:#eef3fd;color:var(--brand);margin-bottom:10px;
}
.meta{display:flex;flex-wrap:wrap;gap:14px;font-size:.84rem;color:var(--muted)}
.meta span{display:inline-flex;align-items:center;gap:6px}

/* ---------- ব্লগ ---------- */
.post-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.post-card .pf-thumb{aspect-ratio:16/9}
.post-card .pf-body{display:flex;flex-direction:column;flex:1}
.post-card .pf-body h3{font-size:1.05rem}
.post-meta{font-size:.82rem;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;margin-bottom:10px}

/* ---------- প্যাকেজ ---------- */
.pkg{display:flex;flex-direction:column;text-align:center;padding:30px 24px}
.pkg.popular{border-color:var(--brand);border-width:2px;box-shadow:var(--shadow-lg)}
.pkg .badge{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  background:var(--brand);color:#fff;font-size:.75rem;font-weight:600;
  padding:5px 16px;border-radius:0 0 11px 11px;
}
.pkg h3{font-size:1.18rem;margin-bottom:4px}
.pkg .price{font-size:1.85rem;font-weight:700;color:var(--brand);line-height:1.3;margin:12px 0 4px}
.pkg .price small{font-size:.82rem;font-weight:500;color:var(--muted);display:block}
.pkg .note{font-size:.85rem;color:var(--muted);min-height:1.6em;margin-bottom:14px}
.pkg ul{list-style:none;padding:0;margin:0 0 22px;text-align:left}
.pkg li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;font-size:.93rem;border-bottom:1px dashed var(--line)}
.pkg li:last-child{border-bottom:0}
.pkg li .ic-wrap{color:var(--accent);margin-top:5px}
.pkg .btn{margin-top:auto}

/* ---------- কন্টাক্ট ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:32px;align-items:start}
.info-list{list-style:none;padding:0;margin:0}
.info-list li{display:flex;gap:14px;align-items:flex-start;padding:15px 0;border-bottom:1px solid var(--line)}
.info-list li:last-child{border-bottom:0}
.info-list .ic-wrap{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;flex:0 0 auto;
  background:#e8effe;color:var(--brand);
}
.info-list b{display:block;font-size:.82rem;color:var(--muted);font-weight:500}
.info-list a,.info-list span.v{font-weight:600;color:var(--ink);word-break:break-word}

.field{margin-bottom:16px}
.field label{display:block;font-size:.9rem;font-weight:600;margin-bottom:7px}
.field .hint{font-size:.8rem;color:var(--muted);font-weight:400}
input[type=text],input[type=email],input[type=tel],input[type=password],input[type=search],select,textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:11px;
  font-family:inherit;font-size:.97rem;color:var(--ink);background:#fff;transition:.16s;
}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,70,194,.12)}
textarea{min-height:140px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.req{color:var(--err)}
.card-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}

/* ---------- বার্তা ---------- */
.flash-wrap{padding-top:18px}
.flash{padding:13px 18px;border-radius:12px;font-size:.94rem;margin-bottom:10px;border:1px solid}
.flash.ok{background:#e9f8f0;border-color:#b7e7cd;color:#0b6b3f}
.flash.err{background:#fdeceb;border-color:#f7c7c3;color:#a52016}

/* ---------- টেবিল ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
table.tbl{width:100%;border-collapse:collapse;font-size:.93rem}
table.tbl th,table.tbl td{padding:12px 15px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
table.tbl th{background:#f7faff;font-weight:600;font-size:.85rem;color:#41527a;white-space:nowrap}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tr:hover td{background:#fafcff}

/* ---------- ফুটার ---------- */
.footer{background:#08193a;color:#a9bcdd;padding:clamp(46px,6vw,68px) 0 0;margin-top:auto}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1.1fr;gap:34px;padding-bottom:38px}
.footer h4{color:#fff;font-size:1rem;margin-bottom:16px}
.brand-foot .brand-text strong{color:#fff}
.foot-about{font-size:.92rem;line-height:1.85;max-width:44ch}
.foot-links,.foot-contact{list-style:none;padding:0;margin:0}
.foot-links li,.foot-contact li{margin-bottom:11px;font-size:.93rem}
.foot-links a{color:#a9bcdd}
.foot-links a:hover{color:#fff}
.foot-contact li{display:flex;gap:10px;align-items:flex-start}
.foot-contact .ic-wrap{color:var(--accent);margin-top:5px}
.foot-contact a{color:#cfe0ff}
.foot-contact a:hover{color:#fff}
.social{list-style:none;padding:0;margin:16px 0 0;display:flex;gap:10px}
.social a{
  display:inline-block;padding:7px 14px;border-radius:9px;font-size:.85rem;
  background:rgba(255,255,255,.09);color:#dbe7ff;border:1px solid rgba(255,255,255,.13);
}
.social a:hover{background:rgba(255,255,255,.17);color:#fff}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:20px;padding-bottom:22px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.86rem;
}
.foot-bottom p{margin:0}
.foot-note{color:#8ba3cc}

/* ---------- ভাসমান বোতাম ---------- */
.wa-float{
  position:fixed;right:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:9px;
  background:#25d366;color:#fff;padding:13px 18px;border-radius:99px;font-weight:600;font-size:.92rem;
  box-shadow:0 10px 26px rgba(37,211,102,.42);transition:.2s;
}
.wa-float:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(37,211,102,.5)}
.to-top{
  position:fixed;right:18px;bottom:82px;z-index:59;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:1.1rem;cursor:pointer;
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ---------- খালি অবস্থা ---------- */
.empty{
  text-align:center;padding:52px 24px;background:#fff;border:1px dashed #c9d7ef;
  border-radius:var(--radius);color:var(--muted);
}
.empty .ic-wrap{color:#a9bfe4;margin-bottom:12px}
.empty b{display:block;color:var(--ink);font-size:1.06rem;margin-bottom:6px}

/* ---------- পাতে বিস্তারিত ---------- */
.page-hero{
  background:linear-gradient(135deg,#0a1f4d,#1b46c2);color:#fff;
  padding:clamp(38px,5vw,60px) 0;
}
.page-hero h1{color:#fff;font-size:clamp(1.6rem,3.4vw,2.4rem);margin-bottom:8px}
.crumb{font-size:.87rem;color:#bcd2f7}
.crumb a{color:#dbe7ff}
.crumb a:hover{color:#fff}
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,3vw,38px);box-shadow:var(--shadow)}
.prose h2{margin-top:1.6em}
.prose h2:first-child{margin-top:0}
.prose img{border-radius:12px;margin:18px 0}
.prose blockquote{
  margin:20px 0;padding:14px 20px;border-left:4px solid var(--brand);
  background:#f7faff;border-radius:0 12px 12px 0;color:#3c4c6b;
}
.prose ul,.prose ol{padding-left:1.4rem}
.prose li{margin-bottom:.5rem}
.figure-sm img{border-radius:14px;box-shadow:var(--shadow)}

/* ---------- পেজিনেশন ---------- */
.pager{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:40px}
.pager a,.pager span{
  min-width:42px;height:42px;display:grid;place-items:center;padding:0 12px;
  border:1px solid var(--line);border-radius:11px;background:#fff;color:#31435f;font-weight:600;font-size:.92rem;
}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.pager .now{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- সাইডবার ---------- */
.with-side{display:grid;grid-template-columns:1fr 320px;gap:30px;align-items:start}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:20px}
.side-card h4{font-size:1rem;margin-bottom:14px}
.side-card ul{list-style:none;padding:0;margin:0}
.side-card li{padding:9px 0;border-bottom:1px dashed var(--line);font-size:.93rem}
.side-card li:last-child{border-bottom:0}

/* ---------- সাড়া দেওয়া (responsive) ---------- */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .g4{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .with-side{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:820px){
  .menu-btn{display:block}
  .topact{display:none}
  .mainnav{
    position:fixed;inset:74px 0 auto;background:#fff;border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .3s ease;box-shadow:0 16px 30px rgba(11,27,58,.1);
  }
  .mainnav.open{max-height:74vh;overflow-y:auto}
  .mainnav ul{flex-direction:column;align-items:stretch;padding:12px 16px 18px}
  .mainnav a{padding:13px 14px;font-size:1rem;border-radius:10px}
  .g3,.g2{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .brand-text em{display:none}
  .g4{grid-template-columns:1fr}
  .card{padding:22px}
  .wa-float .wa-label{display:none}
  .wa-float{padding:14px;border-radius:50%}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column}
}

@media print{
  .topbar,.footer,.wa-float,.to-top,.pager{display:none}
  body{background:#fff}
}