/* Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.6;
}

/* ── Navbar ── */
header {
  background-color: #072441;
  color: #fff;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
}

.nav-links li a {
  color: #cce0f5;
  text-decoration: none;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  font-size: 0.95rem;
  transition: background-color 0.2s, color 0.2s;
  display: block;
}

.nav-links li a:hover {
  background-color: rgba(255,255,255,0.12);
  color: #fff;
}

.cart-btn {
  background-color: #3498db;
  color: #fff;
  border: none;
  padding: 0.5rem 1.1rem;
  cursor: pointer;
  border-radius: 4px;
  font-size: 0.9rem;
  white-space: nowrap;
  transition: background-color 0.3s;
  flex-shrink: 0;
}

.cart-btn:hover {
  background-color: #2980b9;
}

/* Hamburger — hidden on desktop */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #fff;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* Hamburger open state */
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ── Hero ── */
.hero {
  background: linear-gradient(135deg, #072441 0%, #1a4a7a 100%);
  color: #fff;
  text-align: center;
  padding: 4rem 2rem;
}

.hero h2 {
  font-size: 2.2rem;
  margin-bottom: 0.75rem;
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: #cce0f5;
}

.hero-btn {
  display: inline-block;
  background-color: #3498db;
  color: #fff;
  text-decoration: none;
  padding: 0.75rem 2rem;
  border-radius: 4px;
  font-size: 1rem;
  transition: background-color 0.3s;
}

.hero-btn:hover {
  background-color: #2980b9;
}

/* ── Products Grid ── */
.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
}

.product {
  background-color: #fff;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.08);
  text-align: center;
  transition: transform 0.3s;
}

.product:hover {
  transform: translateY(-5px);
}

.product img {
  width: 80%;
  height: 180px;
  object-fit: contain;
  border-radius: 8px;
  margin-bottom: 0.5rem;
}

.product h2 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.product p {
  font-size: 1rem;
  color: #3498db;
  font-weight: 600;
  margin-bottom: 0.8rem;
}

/* ── Buttons ── */
button {
  background-color: #3498db;
  color: #fff;
  border: none;
  padding: 0.7rem 1.3rem;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color 0.3s;
  font-size: 0.9rem;
}

button:hover {
  background-color: #2980b9;
}

/* ── Cart Section ── */
#cart-section {
  padding: 2rem;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.08);
  margin: 2rem;
}

#cart-items {
  list-style: none;
  margin: 1rem 0;
}

#cart-items li {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #f0f0f0;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.hidden {
  display: none;
}

/* ── Payment ── */
#payment-section {
  padding: 2rem;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.08);
  margin: 2rem;
}

.payment-options {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.pay-btn {
  background-color: #27ae60;
}

.pay-btn:hover {
  background-color: #1e8449;
}

#payment-form {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: #f4f4f4;
  border-radius: 8px;
}

#payment-form input {
  display: block;
  width: 100%;
  max-width: 360px;
  padding: 0.6rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

/* ── About & Contact ── */
.info-section {
  max-width: 700px;
  margin: 0 auto;
  padding: 3rem 2rem;
  text-align: center;
}

.info-section h2 {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
  color: #072441;
}

.info-section p {
  color: #555;
  font-size: 1rem;
}

/* ── Footer ── */
footer {
  background-color: #072441;
  color: #cce0f5;
  text-align: center;
  padding: 1.25rem 2rem;
  font-size: 0.9rem;
  margin-top: 2rem;
}

/* ── Responsive: Tablet ── */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: #072441;
    padding: 1rem 2rem 1.5rem;
    gap: 0;
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    padding: 0.65rem 0.5rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
  }

  .navbar {
    position: relative;
  }

  .hero h2 {
    font-size: 1.6rem;
  }

  #cart-section,
  #payment-section {
    margin: 1rem;
  }
}

/* ── Responsive: Mobile ── */
@media (max-width: 480px) {
  header {
    padding: 0 1rem;
  }

  .logo {
    font-size: 1.1rem;
  }

  .cart-btn {
    font-size: 0.8rem;
    padding: 0.45rem 0.8rem;
  }

  .products {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    padding: 1rem;
  }

  .product img {
    height: 130px;
  }

  .hero {
    padding: 2.5rem 1rem;
  }

  .hero h2 {
    font-size: 1.3rem;
  }

  .payment-options {
    flex-direction: column;
  }

  .pay-btn {
    width: 100%;
  }
}