/* =========================
  Dhaka Insulation — Core CSS (mobile-first)
  - Compact nav (no extra margins)
  - Reliable mobile [hidden] panel
  - Flag language switcher
  - Hamburger icon + animation
  - FAQ & RFQ refined
========================= */
:root{
  --brand:#0B1E3B; --accent:#1E5EFF; --accent-2:#22c55e; --ink:#0f172a; --muted:#475569;
  --line:#e2e8f0; --bg:#fff; --chip:#f1f5f9; --shadow:0 8px 24px rgba(2,6,23,.06),0 2px 8px rgba(2,6,23,.05);
  --radius:16px; --navH:76px;
}

/* Base */
html{scroll-behavior:smooth;scroll-padding-top:var(--navH)}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Noto Sans",sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
.container{max-width:1200px;margin:0 auto;padding:0 16px}

/* NAV (tight/compact, no extra margins) */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--navH);
  background: url("/assets/img/menu-bg.png") center/cover no-repeat;
  border-bottom: 1px solid var(--line);
}

.nav .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 10;   /* remove all spacing */
}

.logo{display:flex;align-items:center;gap:8px}
.logo img{height:64px;width:auto;border-radius:8px}
.menu{display:flex;align-items:center;gap:12px;margin:0}
.menu .m-link{color:var(--ink);font-weight:600;font-size:14px;padding:8px 10px;border-radius:10px;margin:0}
.menu .m-link:hover{background:var(--chip)}
.menu .m-link.active{background:#eef2ff;color:#1d4ed8;box-shadow:inset 0 -2px 0 #1d4ed8}
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--navH);
  background: url("/assets/img/menu-bg.png") center/cover no-repeat;
  border-bottom: 1px solid var(--line);
}


.dropdown{position:relative}
.dropdown>button{all:unset;cursor:pointer;color:var(--ink);font-weight:700;padding:8px 10px;border-radius:10px}
.dropdown>button:hover{background:var(--chip)}
.dropdown .panel{position:absolute;inset:auto auto -8px 0;transform:translateY(100%) scale(.98);transform-origin:top left;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;display:none;min-width:220px;opacity:0;transition:opacity .18s ease, transform .18s ease}
.dropdown.open .panel{display:block;opacity:1;transform:translateY(100%) scale(1)}
.panel a{display:block;padding:8px;border-radius:10px}
.panel a:hover{background:#f8fafc}

/* Honor hidden for reliable mobile toggling */
[hidden]{display:none !important}

/* Hamburger (three lines) */
.hamburger{display:none;width:36px;height:36px;border-radius:10px;border:1px solid transparent;align-items:center;justify-content:center;background:#fff;box-shadow:var(--shadow);cursor:pointer}
.hamburger span{display:block;width:20px;height:2px;background:#0f172a;border-radius:2px;transition:transform .18s ease, opacity .18s ease}
.hamburger span:nth-child(1){transform-origin:4px 1px}
.hamburger span:nth-child(3){transform-origin:4px 1px}
.hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* Mobile drawer */
.mobile{position:fixed;inset:calc(var(--navH) - 1px) 0 auto 0;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:var(--shadow);z-index:80}
.mobile .m-link{display:block;padding:14px 16px;border-top:1px solid var(--line);color:var(--ink);font-weight:600}
.mobile .split{display:grid;grid-template-columns:1fr 1fr}
.mobile .group{padding:8px 0}

@media (max-width:980px){
  .menu{display:none}
  .hamburger{display:inline-flex}
}

/* Flag language picker */
.lang-flags{display:flex;gap:6px;align-items:center;margin:0 10px}
.flag-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 8px;border-radius:10px;border:1px solid transparent;background:#fff;box-shadow:0 1px 0 rgba(2,6,23,.04);color:#0f172a}
.flag-btn .t{font-size:12px;letter-spacing:.4px}
.flag-btn:hover{background:#f8fafc}
.flag-btn.active{border-color:#c7d2fe;background:#eef2ff;color:#1d4ed8}
.mobile .mobile-lang{display:flex;gap:8px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);background:#fff}
@media (max-width:980px){ .flag-btn .t{display:none} }

/* Buttons */
.btn{display:inline-flex;gap:8px;align-items:center;padding:10px 14px;border-radius:10px;border:1px solid var(--accent);color:#fff;background:var(--accent);font-weight:700;box-shadow:var(--shadow);transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn--ghost{background:#fff;color:var(--accent)}
.btn--alt{background:var(--brand);border-color:var(--brand)}

/* Hero */
.hero{position:relative;min-height:70vh;display:grid;align-items:center;border-bottom:1px solid var(--line);overflow:hidden}
.hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:contrast(1.05) saturate(1.05)}
.hero .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,30,59,.65),rgba(11,30,59,.35) 40%,rgba(255,255,255,0) 70%),linear-gradient(90deg,rgba(11,30,59,.45),rgba(255,255,255,0))}
.hero .content{position:relative;padding:72px 0 40px;color:#fff}
.hero h1{font-size:38px;line-height:1.15;margin:8px 0}
.hero p.lead{font-size:16px;opacity:.95;max-width:900px}
@media (min-width:900px){.hero h1{font-size:46px}.hero p.lead{font-size:18px}}

.kpis{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.kpis .k{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:#0b1e3b}

/* Sections & layout */
section{padding:64px 0;border-bottom:1px solid var(--line)}
section.pad-xl{padding:96px 0}
h2{font-size:28px;margin:0 0 12px}
h3{font-size:20px;margin:16px 0 8px}
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:980px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:#fff;box-shadow:var(--shadow)}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--chip);padding:5px 8px;border-radius:999px;font-size:12px;color:#334155}
.muted{color:var(--muted)}
.banner{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}

.card {
  background: url("/assets/img/Cube.jpeg") center/cover no-repeat;
  border: 5px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  color: #000;
  box-shadow: var(--shadow);
  background-color: rgba(255,255,255,0.7); /* fade effect */
  background-blend-mode: lighten; /* or try overlay/multiply */
}



/* Tables */
table{width:100%;border-collapse:collapse;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:14px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;background:#fff}
th{background:#f8fafc}

/* Lists & images */
ul{margin:6px 0 0 18px}
.photo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.photo{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#f8fafc}
.photo img{width:100%;height:200px;object-fit:cover;display:block}
.caption{position:absolute;left:8px;bottom:8px;background:rgba(2,6,23,.6);color:#fff;padding:5px 8px;border-radius:8px;font-size:12px}
@media (max-width:900px){.photo-grid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.photo-grid{grid-template-columns:1fr}}

/* Map */
.map iframe{width:100%;height:500px;border:0;border-radius:12px;box-shadow:var(--shadow)}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:var(--shadow);margin:10px 0;overflow:hidden}
.faq details summary{list-style:none;padding:14px 16px;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:8px}
.faq details summary::-webkit-details-marker{display:none}
.faq details summary::after{content:"";margin-left:auto;width:10px;height:10px;border-right:2px solid #334155;border-bottom:2px solid #334155;transform:rotate(-45deg);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>*:not(summary){padding:0 16px 14px 16px}

/* RFQ */
#rfq{display:grid;gap:15px}
#rfq .row{display:grid;gap:5px;grid-template-columns:repeat(1,minmax(0,1fr))}
@media (max-width:700px){#rfq .row{grid-template-columns:1fr}}
#rfq label{display:block;font-weight:600;margin:2px 0}
#rfq input,#rfq textarea,#rfq select{width:90%;padding:15px 12px;border:3px solid var(--line);border-radius:15px;font:inherit;transition:border-color .15s,box-shadow .15s}
#rfq input:focus,#rfq textarea:focus,#rfq select:focus{outline:none;border-color:#93c5fd;box-shadow:0 0 0 3px rgba(147,197,253,.35)}
#rfq .actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
#rfq-msg{min-height:18px}

.rfqcard{border:10px solid var(--line);border-radius:var(--radius);padding:16px;background:#fff;box-shadow:var(--shadow)}


/* Reveal & back-to-top */
.reveal{opacity:100;transform:translateY(16px);transition:opacity .6s, transform .6s}
.reveal.in{opacity:1;transform:none}
.top{position:fixed;right:16px;bottom:16px;background:var(--accent);color:#fff;border-radius:999px;padding:10px 12px;box-shadow:var(--shadow);display:none}
.top.show{display:inline-block}

/* Anchor offset safety */
section, header, [id]{scroll-margin-top:calc(var(--navH) + 14px)}

/* Footer */
.foot{background:#0b1e3b;color:#e5e7eb}
.foot a{color:#e0ecff}
.foot-inner{padding:22px 0;display:flex;gap:14px;flex-wrap:wrap;align-items:center;justify-content:space-between}