:root {
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #475569;
  --primary: #2563eb;
  --card: #ffffff;
  --border: #e2e8f0;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Noto Sans Bengali", "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
.container { width: min(1120px, 92vw); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(248, 250, 252, 0.9); border-bottom: 1px solid var(--border); backdrop-filter: blur(8px); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { font-size: 1.2rem; font-weight: 700; color: var(--text); text-decoration: none; }
.nav-links { display: flex; gap: 1rem; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 500; }
.nav-login {
  padding: 0.48rem 0.95rem;
  font-size: 0.92rem;
  line-height: 1.2;
}
.cta-link { color: var(--primary) !important; font-weight: 600; }

.hero { padding: 72px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 2rem; align-items: center; }
.eyebrow { color: var(--primary); font-weight: 600; margin: 0 0 8px; }
h1 { margin: 0 0 16px; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.05; }
.hero-copy { color: var(--muted); font-size: 1.05rem; max-width: 56ch; }
.hero-media img { width: 100%; border-radius: 16px; border: 1px solid var(--border); background: var(--card); }

.btn { display: inline-block; padding: 0.72rem 1.1rem; border-radius: 10px; text-decoration: none; font-weight: 600; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-ghost { border-color: var(--border); color: var(--text); background: #fff; }
.hero-actions, .centered { display: flex; gap: 0.8rem; margin-top: 1.25rem; }
.centered { justify-content: center; }
.section { padding: 40px 0; }
h2 { margin: 0 0 16px; font-size: clamp(1.45rem, 2.2vw, 2rem); }

.cards-grid, .plans-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.feature-card, .plan-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
}
.feature-card p, .plan-card li, .page-subtitle { color: var(--muted); }
.plan-card .price { font-size: 1.5rem; margin: 6px 0 10px; font-weight: 700; }
.plan-card .price span { font-size: 0.9rem; color: var(--muted); margin-left: 4px; font-weight: 500; }
.plan-card ul { margin: 0; padding-left: 1rem; display: grid; gap: 0.45rem; }

.page-title { margin-bottom: 8px; }

.signup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; align-items: start; }
.signup-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 1rem; }
.signup-form { display: grid; gap: 0.72rem; }
.signup-form label { display: grid; gap: 0.35rem; font-size: 0.92rem; color: var(--muted); }
.signup-form input, .signup-form select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  background: #fff;
}
.full { width: 100%; text-align: center; }
.signup-image { width: 100%; border-radius: 14px; border: 1px solid var(--border); background: var(--card); }

.flash-wrap { margin-top: 0.8rem; }
.flash { border-radius: 10px; padding: 0.7rem 0.8rem; font-size: 0.92rem; }
.flash-error { border: 1px solid #fecaca; background: #fef2f2; color: #991b1b; }

.success-card {
  max-width: 700px;
  margin: 2rem auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.2rem;
}

.site-footer { border-top: 1px solid var(--border); margin-top: 48px; }
.footer-wrap { padding: 18px 0; display: flex; justify-content: space-between; align-items: center; color: var(--muted); }

@media (max-width: 900px) {
  .hero-grid, .signup-grid, .cards-grid, .plans-grid { grid-template-columns: 1fr; }
}