/* techely.com matching theme — dark navy + azure, fast (system fonts, no frameworks) */
:root {
  --bg: #0a1220;
  --bg-2: #0d1b2e;
  --card: #101f36;
  --line: rgba(148, 190, 255, .14);
  --txt: #e8f1ff;
  --muted: #93a8c8;
  --blue: #2e9bd6;
  --sky: #6cc6ff;
  --glow: rgba(64, 164, 223, .25);
  --radius: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--txt);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Bengali", sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
a { color: inherit; text-decoration: none; }
img { display: block; }

/* header */
.site-head {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 22px;
  padding: 12px 22px;
  background: rgba(10, 18, 32, .82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: .2px; }
.head-nav { display: flex; gap: 20px; margin-left: auto; color: var(--muted); font-size: 14.5px; }
.head-nav a:hover { color: var(--txt); }
.head-cta {
  background: linear-gradient(135deg, var(--sky), var(--blue));
  color: #04121f; font-weight: 700; font-size: 14px;
  padding: 8px 16px; border-radius: 999px;
}
@media (max-width: 640px) { .head-nav { display: none; } .head-cta { margin-left: auto; } }

/* hero */
.hero { padding: 64px 0 34px; position: relative; }
.banner { border: 1px solid var(--line); border-radius: 22px; padding: 46px 36px; background:
  radial-gradient(1000px 380px at 20% -10%, var(--glow), transparent 60%), var(--bg-2); }
.banner h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.15; letter-spacing: -.5px; max-width: 640px; }
.banner p { margin: 14px 0 24px; color: var(--muted); font-size: 17px; max-width: 560px; }
.btn-primary, .banner .cta {
  display: inline-block; border: 0; cursor: pointer;
  background: linear-gradient(135deg, var(--sky), var(--blue));
  color: #04121f; font-weight: 700; font-size: 15px;
  padding: 12px 26px; border-radius: 999px;
}
.btn-primary:active { transform: scale(.98); }

/* marquee */
.marquee { overflow: hidden; border-block: 1px solid var(--line); padding: 10px 0; margin: 8px 0 10px; }
.marquee-track { display: inline-flex; gap: 34px; white-space: nowrap; color: var(--muted); font-size: 13.5px; animation: slide 26s linear infinite; }
@keyframes slide { to { transform: translateX(-50%); } }

/* sections */
.section { padding: 58px 0; }
.section.alt { background: var(--bg-2); border-block: 1px solid var(--line); margin: 0 -20px; padding-inline: 20px; }
.sec-title { font-size: clamp(22px, 3.4vw, 30px); letter-spacing: -.3px; }
.sec-sub { color: var(--muted); margin: 8px 0 30px; }

/* product grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(180deg, var(--card), var(--bg-2));
  padding: 22px; display: flex; flex-direction: column; gap: 10px;
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-3px); border-color: rgba(108, 198, 255, .45); }
.card .badge { align-self: flex-start; font-size: 11.5px; font-weight: 700; letter-spacing: .4px; color: var(--sky);
  border: 1px solid rgba(108, 198, 255, .4); padding: 3px 10px; border-radius: 999px; text-transform: uppercase; }
.card h3 { font-size: 18.5px; }
.card .tag { color: var(--muted); font-size: 14px; min-height: 42px; }
.card .price { font-size: 26px; font-weight: 800; letter-spacing: -.5px; }
.card .vars { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 6px; }
.card .var-btn {
  border: 1px solid var(--line); background: transparent; color: var(--txt);
  border-radius: 999px; padding: 6px 14px; font-size: 13.5px; cursor: pointer; font-weight: 600;
}
.card .var-btn.sel { background: linear-gradient(135deg, var(--sky), var(--blue)); color: #04121f; border-color: transparent; }
.card .buy { margin-top: auto; width: 100%; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.step { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--card); }
.step span { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  background: rgba(108, 198, 255, .15); color: var(--sky); font-weight: 800; margin-bottom: 10px; }
.step h3 { font-size: 16.5px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; }
@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }

/* faq */
.faq-list { margin-top: 22px; }
.faq-item { border-bottom: 1px solid var(--line); padding: 16px 4px; }
.faq-item h3 { font-size: 15.5px; cursor: pointer; display: flex; justify-content: space-between; gap: 12px; }
.faq-item p { color: var(--muted); font-size: 14.5px; margin-top: 8px; display: none; }
.faq-item.open p { display: block; }

/* footer */
.site-foot { border-top: 1px solid var(--line); margin-top: 40px; padding: 42px 22px 60px; text-align: center; }
.foot-logo { height: 30px; margin: 0 auto 14px; }
.site-foot p { color: var(--muted); font-size: 13.5px; }

/* modal */
.modal-back { position: fixed; inset: 0; background: rgba(4, 10, 20, .7); backdrop-filter: blur(4px);
  display: grid; place-items: center; z-index: 100; padding: 18px; }
.modal { width: 100%; max-width: 430px; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 20px; padding: 26px; position: relative; }
.modal h3 { margin-bottom: 4px; }
.modal-x { position: absolute; top: 12px; right: 14px; background: none; border: 0; color: var(--muted);
  font-size: 16px; cursor: pointer; }
.m-prod { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.modal label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 4px; }
.modal input, .modal textarea { width: 100%; background: var(--card); border: 1px solid var(--line);
  color: var(--txt); border-radius: 10px; padding: 10px 12px; font: inherit; }
.modal input:focus, .modal textarea:focus { outline: 1px solid var(--sky); }
.m-total { margin: 16px 0; font-size: 15px; }
.m-ok { margin-top: 12px; color: var(--sky); font-weight: 600; }
[hidden] { display: none !important; }

/* payment popup */
.pay-choose { margin-top: 14px; }
.pay-label { font-size: 13px; color: var(--muted); margin: 0 0 8px; }
.pay-btns { display: flex; gap: 10px; }
.pay-btn { flex: 1; padding: 12px; border-radius: 10px; border: 1.5px solid var(--line); background: var(--card); color: var(--txt); font-weight: 700; cursor: pointer; }
.pay-btn.bkash.sel { border-color: #e2136e; box-shadow: 0 0 0 2px rgba(226,19,110,.25); }
.pay-btn.nagad.sel { border-color: #f6921e; box-shadow: 0 0 0 2px rgba(246,146,30,.25); }
.pay-modal { max-width: 380px; }
.pay-head { font-weight: 800; font-size: 22px; text-align: center; padding: 10px; border-radius: 10px; margin-bottom: 14px; }
.pay-head.bkash { color: #e2136e; background: rgba(226,19,110,.1); }
.pay-head.nagad { color: #f6921e; background: rgba(246,146,30,.1); }
.pay-num-row { display: flex; align-items: center; gap: 10px; justify-content: center; margin-bottom: 10px; }
.pay-number { font-size: 20px; font-weight: 800; letter-spacing: .5px; }
.pay-copy-num { padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--txt); cursor: pointer; font-size: 13px; }
.pay-instruction { text-align: center; color: var(--muted); margin: 6px 0; }
.pay-amount { text-align: center; font-size: 16px; margin: 10px 0 14px; }
.pay-error { color: #ff6b6b; text-align: center; font-size: 14px; margin-bottom: 10px; }
.pay-q { text-align: center; font-weight: 700; margin: 4px 0 10px; }
.pay-yn { display: flex; gap: 12px; }
.btn-yes, .btn-no { flex: 1; padding: 12px; border-radius: 10px; border: none; font-weight: 800; font-size: 15px; cursor: pointer; }
.btn-yes { background: #1c8c4e; color: #fff; }
.btn-no { background: #3a2a30; color: #eee; }
.pay-socials { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.soc { text-align: center; padding: 12px; border-radius: 10px; font-weight: 700; text-decoration: none; color: #fff !important; }
.soc.messenger { background: #0084ff; }
.soc.whatsapp { background: #25d366; }