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

body {
  font-family: "Courier New", monospace;
  background: #0a0a0a;
  color: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Header / Nav */
header {
  background: #000;
  border-bottom: 3px solid #ff0000;
  padding: 20px 0;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  font-size: 2rem;
  font-weight: bold;
  color: #ff0000;
  text-transform: uppercase;
  letter-spacing: 4px;
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  font-weight: bold;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #ff0000;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(180deg, #000 0%, #1a0000 100%);
}

.hero h1 {
  font-size: 4rem;
  color: #ff0000;
  text-transform: uppercase;
  margin-bottom: 20px;
  text-shadow: 3px 3px 0 #000;
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 30px;
  color: #ccc;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 15px 40px;
  background: #ff0000;
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  font-weight: bold;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 1rem;
}

.btn:hover {
  background: #cc0000;
  transform: scale(1.05);
}

.btn-secondary {
  background: #333;
  border: 2px solid #ff0000;
}

.btn-secondary:hover {
  background: #ff0000;
}

/* Products Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.product-card {
  background: #1a1a1a;
  border: 2px solid #333;
  padding: 20px;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.product-card:hover {
  border-color: #ff0000;
  transform: translateY(-8px);
  box-shadow: 0 8px 16px rgba(255, 0, 0, 0.3);
}

.product-image {
  width: 100%;
  height: 300px;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 15px;
  border: 1px solid #333;
}

.product-image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.product-name {
  font-size: 1.5rem;
  color: #ff0000;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.product-description {
  color: #ccc;
  margin-bottom: 15px;
  font-size: 0.9rem;
}

.product-price {
  font-size: 1.5rem;
  color: #fff;
  font-weight: bold;
  margin-bottom: 15px;
}

/* Cart */
.cart-items {
  margin-top: 30px;
}

.cart-item {
  background: #1a1a1a;
  border: 2px solid #333;
  padding: 20px;
  margin-bottom: 20px;
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 20px;
  align-items: center;
}

.cart-item-image {
  width: 100px;
  height: 100px;
  background: #000;
  border: 1px solid #333;
}

.cart-item-info h3 {
  color: #ff0000;
  margin-bottom: 10px;
}

.cart-item-controls {
  display: flex;
  gap: 10px;
  align-items: center;
}

.cart-item-controls button {
  padding: 5px 15px;
  background: #333;
  color: #fff;
  border: 1px solid #ff0000;
  cursor: pointer;
}

.cart-item-controls button:hover {
  background: #ff0000;
}

.cart-summary {
  background: #1a1a1a;
  border: 2px solid #ff0000;
  padding: 30px;
  margin-top: 30px;
}

.cart-summary h2 {
  color: #ff0000;
  margin-bottom: 20px;
}

.cart-summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 15px;
  font-size: 1.2rem;
}

.cart-summary-total {
  border-top: 2px solid #ff0000;
  padding-top: 15px;
  font-weight: bold;
  font-size: 1.5rem;
}

.shipping-notice {
  background: #ff0000;
  color: #fff;
  padding: 15px;
  margin: 20px 0;
  text-align: center;
  font-weight: bold;
}

.shipping-notice.success {
  background: #00ff00;
  color: #000;
}

/* Auth Forms */
.auth-form {
  max-width: 500px;
  margin: 50px auto;
  background: #1a1a1a;
  border: 2px solid #ff0000;
  padding: 40px;
}

.auth-form h2 {
  color: #ff0000;
  margin-bottom: 30px;
  text-align: center;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  color: #ccc;
}

.form-group input {
  width: 100%;
  padding: 12px;
  background: #0a0a0a;
  border: 1px solid #333;
  color: #fff;
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: #ff0000;
}

/* Checkout */
#card-container {
  background: #0a0a0a;
  padding: 20px;
  border: 2px solid #333;
  margin: 20px 0;
}

.error {
  color: #ff0000;
  background: #1a0000;
  padding: 15px;
  margin: 20px 0;
  border: 1px solid #ff0000;
}

.success {
  color: #00ff00;
  background: #001a00;
  padding: 15px;
  margin: 20px 0;
  border: 1px solid #00ff00;
}

/* Footer */
footer {
  background: #000;
  border-top: 3px solid #ff0000;
  padding: 40px 20px;
  text-align: center;
  margin-top: 80px;
}

footer p {
  color: #999;
  line-height: 1.8;
}

footer p:first-child {
  font-weight: bold;
  color: #ccc;
  letter-spacing: 1px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  nav {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px;
  }

  .logo {
    font-size: 1.8rem;
    letter-spacing: 2px;
  }

  .nav-links {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    font-size: 0.85rem;
  }

  .nav-links a {
    padding: 8px 12px;
  }

  .hero {
    padding: 50px 15px;
  }

  .hero h1 {
    font-size: 2.2rem;
    line-height: 1.2;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .products-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .product-image {
    height: 250px;
  }

  .product-name {
    font-size: 1.3rem;
  }

  .product-price {
    font-size: 1.3rem;
  }

  .cart-item {
    grid-template-columns: 70px 1fr;
    gap: 12px;
    padding: 15px;
  }

  .cart-item-image {
    width: 70px;
    height: 70px;
  }

  .cart-item-controls {
    grid-column: 1 / -1;
    justify-content: center;
    margin-top: 10px;
  }

  .cart-item-controls button {
    padding: 8px 15px;
    font-size: 0.9rem;
  }

  .cart-summary {
    padding: 20px;
  }

  .cart-summary-row {
    font-size: 1.1rem;
  }

  .shipping-notice {
    font-size: 0.95rem;
    padding: 12px;
  }

  .auth-form {
    margin: 15px;
    padding: 25px;
  }

  .btn {
    padding: 14px 30px;
    font-size: 0.95rem;
    min-height: 48px; /* Better touch target */
  }

  .container {
    padding: 15px;
  }

  /* Better form inputs for mobile */
  .form-group input,
  input[type="text"],
  input[type="email"],
  input[type="password"] {
    font-size: 16px !important; /* Prevents zoom on iOS */
    padding: 14px;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 1.5rem;
    letter-spacing: 1px;
  }

  .nav-links {
    font-size: 0.75rem;
    gap: 8px;
  }

  .nav-links a {
    padding: 6px 10px;
  }

  .hero {
    padding: 40px 15px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .btn {
    padding: 12px 25px;
    font-size: 0.9rem;
    width: 100%; /* Full width on very small screens */
    min-height: 48px;
  }

  .products-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .product-card {
    padding: 15px;
  }

  .product-image {
    height: 200px;
  }

  .product-name {
    font-size: 1.1rem;
  }

  .cart-item {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 12px;
  }

  .cart-item-image {
    margin: 0 auto 10px;
  }

  .cart-summary {
    padding: 15px;
  }

  .cart-summary h2 {
    font-size: 1.3rem;
  }

  .cart-summary-row {
    font-size: 1rem;
  }

  .cart-summary-total {
    font-size: 1.3rem;
  }

  .container {
    padding: 10px;
  }

  .auth-form {
    margin: 10px;
    padding: 20px;
  }

  /* Make checkout forms stack better */
  .cart-summary-row {
    flex-direction: column;
    gap: 5px;
    align-items: flex-start;
  }
}