* { box-sizing: border-box; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  margin: 0;
  color: #1f2937;
  background: #f8fafc;
}
/* Navbar */
.navbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 20px; background: #fff; border-bottom: 1px solid #e5e7eb;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-text { font-weight: 800; color: #1f2937; }
.logo { height: 42px; width: 42px; border-radius: 50%; }
.nav-links { list-style: none; display: flex; gap: 18px; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; color: #1f2937; font-weight: 600; }
.nav-links a:hover { color: #4f46e5; }

/* Hero */
.hero {
  text-align: center; padding: 90px 20px; background: #eef2ff; color: #111827;
}
.hero h1 { font-size: 2.6rem; margin: 0 0 10px; }
.btn {
  display: inline-block; background: #4f46e5; color: #fff; border: 0;
  padding: 10px 18px; border-radius: 8px; text-decoration: none; cursor: pointer;
  font-weight: 700;
}
.btn:hover { filter: brightness(0.95); }
.w-full { width: 100%; }

/* Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 30px 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.card { background: #fff; padding: 20px; border-radius: 12px; box-shadow: 0 6px 18px rgba(0,0,0,0.06); }
.card .price { font-size: 1.8rem; font-weight: 800; color: #4f46e5; margin: 8px 0 12px; }
.card.highlight { border: 2px solid #4f46e5; }

.feature-strip { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 16px; padding: 20px; max-width: 1100px; margin: 10px auto 40px; }
.feature { background:#fff; padding:16px; border-radius:10px; box-shadow:0 4px 12px rgba(0,0,0,0.05); }
.bullets { padding-left: 18px; }

/* Cart */
.cart-list > div { display:flex; justify-content: space-between; padding: 10px 12px; background:#fff; margin-bottom: 10px; border-radius: 8px; }
.cart-summary { display:flex; align-items:center; gap: 16px; margin-top: 10px; }
.checkout-msg { background:#ecfeff; padding:16px; border-radius:8px; margin-top:16px; }
.hidden { display:none; }

/* Forms */
.form { display: grid; gap: 12px; max-width: 520px; }
.form label { display: grid; gap: 6px; font-weight: 600; }
.form input, .form textarea {
  border: 1px solid #d1d5db; border-radius: 8px; padding: 10px; font: inherit; background:#fff;
}
.success { color: #065f46; font-weight: 700; }

/* Footer */
footer { background:#0b1020; color:#d1d5db; text-align:center; padding: 18px; margin-top: 40px; }