:root {
  --primary: #900b31;
  --primary-dark: #6e0824;
  --primary-light: #b31644;
  --secondary: #0056b3;
  --secondary-light: #3385ff;
  --accent: #1e8e3e;
  --accent-hover: #17732f;
  --bg-light: #f8f9fa;
  --text-main: #2d3748;
  --text-muted: #5f6b7a;
  --radius: 12px;
  --nav-h: 80px;
  --shadow-sm: 0 4px 6px rgba(0,0,0,.05);
  --shadow-md: 0 10px 15px rgba(0,0,0,.06), 0 4px 6px rgba(0,0,0,.03);
  --shadow-lg: 0 20px 25px rgba(0,0,0,.1), 0 10px 10px rgba(0,0,0,.04);
  --transition: all .3s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  font-family: 'Inter', 'Hind Siliguri', system-ui, sans-serif;
  color: var(--text-main);
  background: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}
html[lang="bn"] body { font-family: 'Hind Siliguri', 'Inter', system-ui, sans-serif; }
h1, h2, h3 { font-family: 'Outfit', 'Hind Siliguri', sans-serif; font-weight: 700; line-height: 1.2; }
html[lang="bn"] h1, html[lang="bn"] h2, html[lang="bn"] h3 { font-family: 'Hind Siliguri', 'Outfit', sans-serif; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
.ico { width: 1em; height: 1em; flex: none; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 3000; background: #fff; padding: 12px 20px; border-radius: 6px; box-shadow: var(--shadow-md); }
.skip-link:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--secondary-light); outline-offset: 2px; }

/* Navbar */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: box-shadow .3s, background .3s;
}
.navbar.scrolled { box-shadow: var(--shadow-md); background: rgba(255,255,255,.98); }
.nav-inner { display: flex; justify-content: space-between; align-items: center; height: var(--nav-h); gap: 16px; }
.logo img { height: 54px; width: auto; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a { font-weight: 600; position: relative; transition: color .3s; }
.nav-links a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--primary); transition: width .3s; }
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-actions { display: flex; gap: 16px; align-items: center; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px; font-weight: 600; font-size: 1rem;
  font-family: inherit; cursor: pointer; border: none; transition: var(--transition);
}
.btn-outline { border: 2px solid var(--text-main); background: transparent; color: var(--text-main); padding: 8px 20px; }
.btn-outline:hover { background: var(--text-main); color: #fff; transform: translateY(-2px); }
.lang-toggle { font-family: 'Hind Siliguri', 'Inter', sans-serif; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; box-shadow: 0 4px 15px rgba(144,11,49,.3); }
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(144,11,49,.4); }
.btn-accent { background: var(--accent); color: #fff; padding: 10px 20px; border-radius: 8px; font-size: .9rem; }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); }
.btn-whatsapp { background: #1fa855; color: #fff; }
.btn-whatsapp:hover { background: #178a45; transform: translateY(-2px); }

/* Hero */
.hero {
  margin-top: var(--nav-h);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
  color: #fff; padding: 80px 0; text-align: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0; opacity: .5;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' fill='none' stroke='rgba(255,255,255,0.05)' stroke-width='2'%3E%3Cpath d='M0 100 L100 0 L200 100 L100 200 Z'/%3E%3C/svg%3E") repeat;
}
.hero .container { position: relative; }
.hero h1 { font-size: 3.5rem; margin-bottom: 16px; letter-spacing: -1px; animation: fadeDown .8s ease-out both; }
.hero p { font-size: 1.2rem; font-weight: 300; opacity: .9; animation: fadeUp .8s ease-out .2s both; }

/* Intro */
.intro { padding: 100px 0; }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.intro-image {
  justify-self: center;
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0,0,0,.05); background: #fff; padding: 20px;
  display: flex; justify-content: center; align-items: center;
}
.intro-image img { max-height: 420px; width: auto; object-fit: contain; transition: transform .5s ease; cursor: zoom-in; }
.intro-image:hover img { transform: scale(1.05); }
.intro-content h2 { font-size: 2.5rem; margin-bottom: 24px; }
.intro-content p { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 32px; }

/* Products */
.products { padding: 80px 0; background: #fff; }
.products.alt-bg { background: var(--bg-light); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: 2.5rem; display: inline-block; position: relative; padding-bottom: 16px; }
.section-header h2::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 80px; height: 4px; background: var(--primary); border-radius: 2px; }
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(400px, 100%), 1fr)); gap: 32px; }
.product-card {
  background: #fff; border-radius: var(--radius); padding: 24px; display: flex; gap: 24px;
  box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,.05);
  transition: var(--transition); position: relative; overflow: hidden;
}
.product-card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--primary); transform: scaleY(0); transform-origin: bottom; transition: transform .3s ease; }
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); }
.product-card:hover::before { transform: scaleY(1); }
.product-img { flex: 0 0 120px; height: 140px; background: var(--bg-light); border-radius: 8px; display: flex; align-items: center; justify-content: center; padding: 6px; }
.product-img img { max-width: 100%; max-height: 100%; width: auto; object-fit: contain; mix-blend-mode: multiply; cursor: zoom-in; }
.product-info { flex: 1; display: flex; flex-direction: column; }
.product-info h3 { font-size: 1.2rem; margin-bottom: 8px; }
.product-info p { font-size: .95rem; color: var(--text-muted); margin-bottom: 16px; flex-grow: 1; }
.product-info .btn-accent { align-self: flex-start; }

/* Delivery */
.delivery {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  padding: 100px 0; color: #fff; text-align: center; position: relative; overflow: hidden;
}
.delivery::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,.1) 0%, rgba(255,255,255,0) 60%); animation: pulse 10s infinite alternate; }
.delivery .container { position: relative; }
.delivery-header { max-width: 800px; margin: 0 auto 64px; }
.delivery-header h2 { font-size: 3rem; margin-bottom: 24px; }
.delivery-header p { font-size: 1.2rem; opacity: .95; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.feature-card { background: rgba(255,255,255,.1); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,.2); padding: 40px 30px; border-radius: 20px; transition: var(--transition); }
.feature-card:hover { background: rgba(255,255,255,.15); transform: translateY(-10px); }
.feature-icon { width: 80px; height: 80px; background: #fff; color: var(--secondary); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; box-shadow: 0 10px 20px rgba(0,0,0,.1); font-size: 36px; }
.feature-card h3 { font-size: 1.5rem; margin-bottom: 16px; }
.feature-card p { opacity: .95; }

/* Footer */
.footer { background: #fff; padding: 64px 0 40px; text-align: center; border-top: 1px solid rgba(0,0,0,.05); }
.footer h2 { font-size: 2rem; margin-bottom: 12px; }
.footer-lead { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 28px; }
.footer-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.copyright { color: var(--text-muted); font-size: .9rem; }

/* Sticky WhatsApp */
.whatsapp-sticky {
  position: fixed; bottom: 24px; right: 24px; z-index: 1000;
  width: 60px; height: 60px; border-radius: 50%; background: #25d366; color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 32px;
  box-shadow: var(--shadow-lg); transition: var(--transition);
}
.whatsapp-sticky:hover { transform: scale(1.1) translateY(-5px); box-shadow: 0 15px 25px rgba(37,211,102,.4); }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.9); backdrop-filter: blur(5px); opacity: 0; transition: opacity .3s ease;
}
.lightbox[hidden] { display: none; }
.lightbox.is-open { opacity: 1; }
.lightbox-img { max-width: 90%; max-height: 90vh; width: auto; border-radius: 8px; background: #fff; box-shadow: 0 0 20px rgba(0,0,0,.5); transform: scale(.9); transition: transform .3s ease; }
.lightbox.is-open .lightbox-img { transform: scale(1); }
.lightbox-close { position: absolute; top: 15px; right: 30px; color: #f1f1f1; font-size: 44px; line-height: 1; background: none; border: none; cursor: pointer; }
.lightbox-close:hover { color: #bbb; }

/* Reveal on scroll (only hidden when JS is running) */
.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity .8s ease-out, transform .8s ease-out; }
.js .reveal.is-visible { opacity: 1; transform: none; }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text-main); font-size: 1.5rem; padding: 8px; }

@keyframes fadeDown { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: none; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: .9; transform: none; } }
@keyframes pulse { from { transform: scale(1); } to { transform: scale(1.1); } }

@media (max-width: 992px) {
  .intro { padding: 64px 0; }
  .intro-grid { grid-template-columns: 1fr; text-align: center; gap: 40px; }
  .intro-image { margin: 0 auto; max-width: 560px; }
  .features-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
}
@media (max-width: 768px) {
  :root { --nav-h: 68px; }
  .logo img { height: 44px; }
  .nav-links {
    display: none; position: absolute; top: var(--nav-h); left: 0; width: 100%;
    background: #fff; flex-direction: column; gap: 0; padding: 8px 0; box-shadow: var(--shadow-md); text-align: center;
  }
  .nav-links a { display: block; padding: 12px; }
  .nav-links.is-open { display: flex; }
  .menu-toggle { display: inline-flex; align-items: center; }
  .call-btn { display: none; }
  .lang-toggle { padding: 6px 12px; font-size: .85rem; white-space: nowrap; }
  .nav-actions { gap: 8px; }
  .hero { padding: 56px 0; }
  .hero h1 { font-size: 2.4rem; }
  .intro-content h2, .section-header h2 { font-size: 1.9rem; }
  .products { padding: 56px 0; }
  .section-header { margin-bottom: 36px; }
  .product-grid { gap: 20px; }
  .product-card { padding: 18px; gap: 18px; }
  .product-img { flex-basis: 100px; height: 120px; }
  .delivery { padding: 64px 0; }
  .delivery-header { margin-bottom: 40px; }
  .delivery-header h2 { font-size: 2.2rem; }
  .whatsapp-sticky { width: 52px; height: 52px; font-size: 28px; bottom: 16px; right: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; }
}