:root {
  --teal: #0f6e78;
  --teal-dark: #0a4f57;
  --mint: #e6f4f3;
  --sun: #f2b632;
  --ink: #1d2b2e;
  --muted: #5c6b6e;
  --line: #d5e3e2;
  --bg: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans Bengali", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a { color: var(--teal); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--sun); outline-offset: 2px; }

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 14px 5%;
  background: var(--teal-dark);
}
.brand { color: #fff; font-weight: 700; font-size: 1.2rem; text-decoration: none; }
.top nav { display: flex; gap: 20px; }
.top nav a { color: #d8efed; text-decoration: none; }
.top nav a:hover { color: #fff; }

.hero {
  padding: 72px 5% 64px;
  background: var(--mint);
  border-bottom: 6px solid var(--sun);
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; max-width: 16em; color: var(--teal-dark); }
.hero p { max-width: 36em; margin: 16px 0 28px; font-size: 1.1rem; color: var(--muted); }

.btn {
  display: inline-block;
  padding: 12px 26px;
  background: var(--teal);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  border-radius: 6px;
}
.btn:hover { background: var(--teal-dark); }

.wrap { padding: 56px 5%; max-width: 1100px; margin: 0 auto; }
.wrap h2 { font-size: 1.8rem; margin-bottom: 20px; color: var(--teal-dark); }

.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.filters button {
  padding: 8px 18px;
  border: 1px solid var(--teal);
  background: #fff;
  color: var(--teal);
  border-radius: 999px;
  font-size: 1rem;
  cursor: pointer;
}
.filters button.active, .filters button:hover { background: var(--teal); color: #fff; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--teal);
  border-radius: 6px;
}
.card[data-category="stationery"] { border-left-color: var(--sun); }
.card h3 { font-size: 1.15rem; }
.card p { color: var(--muted); flex: 1; }
.price { font-weight: 700; margin: 6px 0 10px; }

.order {
  padding: 9px 12px;
  border: none;
  border-radius: 6px;
  background: #1a8f4a;
  color: #fff;
  font-size: 0.95rem;
  cursor: pointer;
}
.order:hover { background: #147239; }

.note { margin-top: 20px; font-size: 0.9rem; color: var(--muted); }

.about p { max-width: 40em; }
.contact { border-top: 1px solid var(--line); }
.contact p { margin-bottom: 6px; }

footer { padding: 24px 5%; text-align: center; background: var(--teal-dark); color: #cfe6e4; font-size: 0.9rem; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }