:root {
  --pink: #e2136e;      /* bKash */
  --pink-2: #ff4d94;
  --orange: #f6821f;    /* Nagad */
  --purple: #8a1f7a;    /* Rocket */
  --bg: #f4f5fb;
  --card: #ffffff;
  --ink: #14152a;
  --muted: #6b7280;
  --line: #e9eaf2;
  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(16,24,40,.04), 0 10px 30px rgba(16,24,40,.06);
  --shadow-lg: 0 20px 50px rgba(226,19,110,.16);
  --grad: linear-gradient(135deg, #e2136e 0%, #b01e8e 55%, #8a1f7a 100%);
  --grad-soft: linear-gradient(135deg, #fff0f7 0%, #f3ecfb 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Bengali", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--pink); text-decoration: none; }
a:hover { text-decoration: underline; }
em { font-style: italic; }

/* ---- Nav ---- */
.nav {
  display: flex; align-items: center; gap: 20px;
  padding: 14px 26px; background: rgba(255,255,255,.82); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20;
}
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; font-size: 19px; letter-spacing: -.4px; color: var(--ink); text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand .logo { width: 26px; height: 26px; border-radius: 8px; display: block; }
.brand .dot {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.nav .spacer { flex: 1; }
.nav a { color: #41435a; font-weight: 600; font-size: 14px; }
.nav a:hover { color: var(--pink); text-decoration: none; }
.nav a.active { color: var(--pink); }

.wrap { max-width: 1000px; margin: 30px auto; padding: 0 18px; }
.grid { display: grid; gap: 20px; }
@media (min-width: 760px) { .grid.cols-2 { grid-template-columns: 1fr 1fr; } }

/* ---- Cards ---- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.grid.cols-2 .card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card h2 { margin: 0 0 4px; font-size: 17px; letter-spacing: -.2px; }
.card .sub { color: var(--muted); font-size: 13px; margin: 0 0 18px; }

/* ---- Forms ---- */
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; color: #374151; }
input, select {
  width: 100%; padding: 11px 13px; border: 1px solid #dfe1ec;
  border-radius: 11px; font: inherit; background: #fff; color: var(--ink); transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus { outline: none; border-color: var(--pink); box-shadow: 0 0 0 4px rgba(226,19,110,.12); }

button {
  appearance: none; border: 0; border-radius: 11px; padding: 11px 18px;
  font: inherit; font-weight: 700; cursor: pointer; color: #fff;
  background: var(--grad); background-size: 160% 160%;
  box-shadow: 0 8px 20px rgba(226,19,110,.28); transition: transform .15s, box-shadow .15s, opacity .15s, background-position .4s;
}
button:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(226,19,110,.34); background-position: 100% 0; }
button.secondary { background: #fff; color: var(--ink); border: 1px solid #dfe1ec; box-shadow: none; }
button.secondary:hover { border-color: var(--pink); color: var(--pink); }
button.ghost { background: transparent; color: var(--muted); padding: 6px 10px; box-shadow: none; }
button.ghost:hover { color: var(--pink); transform: none; }
button:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* ---- Segmented Live/Sandbox toggle ---- */
.seg { display: inline-flex; background: #eef0f6; border-radius: 10px; padding: 3px; gap: 2px; }
.seg-btn { background: transparent; color: var(--muted); box-shadow: none; padding: 6px 14px; font-size: 13px; font-weight: 700; border-radius: 8px; }
.seg-btn:hover { transform: none; box-shadow: none; color: var(--ink); }
.seg-btn.active { background: #fff; color: var(--pink); box-shadow: 0 1px 3px rgba(16,24,40,.12); }

/* ---- Pills / status ---- */
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 11px; border-radius: 999px; font-size: 12px; font-weight: 700; text-transform: capitalize; }
.pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill.verified { background: #dcfce7; color: var(--green); }
.pill.pending  { background: #fef3c7; color: var(--amber); }
.pill.expired, .pill.cancelled { background: #fee2e2; color: var(--red); }

/* ---- Table ---- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 12px 8px; border-bottom: 1px solid var(--line); }
th { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
tbody tr { transition: background .12s; }
tbody tr:hover { background: #faf7fb; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

.token {
  background: #0f172a; color: #e2e8f0; padding: 13px 15px; border-radius: 11px;
  font-family: ui-monospace, Menlo, monospace; font-size: 13px; word-break: break-all; margin-top: 8px;
}
.note { font-size: 12.5px; color: var(--muted); }
.muted { color: var(--muted); }
.center { text-align: center; }

.banner { padding: 11px 14px; border-radius: 11px; font-size: 13px; font-weight: 600; margin-bottom: 12px; }
.banner.warn { background: #fff7ed; color: #9a3412; border: 1px solid #fed7aa; }
.banner.ok   { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.banner.err  { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.hidden { display: none !important; }

/* ---- Hero ---- */
.hero {
  position: relative; text-align: center; padding: 70px 18px 30px; overflow: hidden;
  background: radial-gradient(900px 380px at 50% -60px, #ffe3f1 0%, rgba(255,227,241,0) 70%), var(--bg);
}
.hero h1 { font-size: clamp(34px, 6vw, 56px); margin: 6px 0 14px; letter-spacing: -1.4px; font-weight: 800; line-height: 1.05; }
.hero h1 em { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: #4b4d63; max-width: 600px; margin: 0 auto; font-size: 16px; }
.logos { display: inline-flex; gap: 12px; justify-content: center; align-items: center; flex-wrap: wrap; }
.logos span { padding: 7px 16px; border-radius: 999px; font-weight: 800; font-size: 15px; background: #fff; box-shadow: var(--shadow); }
.logos .b { color: var(--pink); } .logos .n { color: var(--orange); } .logos .r { color: var(--purple); }

/* ---- Checkout bits ---- */
.big-amount { font-size: 34px; font-weight: 800; letter-spacing: -.6px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.spinner { width: 18px; height: 18px; border: 3px solid #f0d9e6; border-top-color: var(--pink); border-radius: 50%; animation: spin .8s linear infinite; display: inline-block; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Feature icon chips (used on landing) ---- */
.feat { display:flex; gap:14px; align-items:flex-start; }
.feat .ic { flex:0 0 auto; width:42px; height:42px; border-radius:12px; display:grid; place-items:center; font-size:20px; background: var(--grad-soft); }
footer { color: var(--muted); }
pre { margin: 0; }