body {
  margin: 0;
  font-family: 'Roboto Condensed', sans-serif;
  background: linear-gradient(135deg, #8B0000, #1a1a1a);
  color: #fff;
  text-align: center;
  background-image: url('grit-texture.png'); /* optional texture */
  background-size: cover;
}

header {
  padding: 2em 1em;
  background: rgba(0, 0, 0, 0.85);
  border-bottom: 5px solid #ff0000;
}

h1, h2 {
  font-family: 'Bebas Neue', sans-serif;
}

h1 {
  font-size: 3em;
  margin: 0.5em 0;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.logo {
  width: 120px;
  height: 120px;
  margin-bottom: 1em;
  border: 3px solid #ff0000;
  border-radius: 50%;
  background-color: #000;
  padding: 5px;
}

.product-section {
  background: #111;
  color: #ff4444;
  padding: 2em 1em;
  border-radius: 12px;
  margin: 2em auto;
  max-width: 600px;
  box-shadow: 0 0 20px #ff0000aa;
  border: 2px solid #ff0000;
}

.product-section h2 {
  margin-bottom: 0.5em;
  font-size: 2em;
  text-transform: uppercase;
}

.product-section p {
  font-size: 1.3em;
  font-weight: bold;
}

button {
  background-color: #ff0000;
  color: #fff;
  border: none;
  padding: 1em 2em;
  font-size: 1.1em;
  font-weight: bold;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 8px;
  transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px #ff4444;
}

.qr-section {
  margin-top: 3em;
}

.qr-section p {
  font-size: 1.1em;
  margin-bottom: 1em;
  color: #ccc;
}

.qr-section img {
  width: 220px;
  border: 5px solid #ff0000;
  border-radius: 12px;
  background-color: #000;
  padding: 5px;
}
@media only screen and (max-width: 600px) {
  h1 {
    font-size: 2em;
  }

  .logo {
    width: 80px;
    height: 80px;
  }

  .product-section {
    padding: 1.5em 0.5em;
    margin: 1em;
  }

  .product-section p {
    font-size: 1em;
  }

  .qr-section img {
    width: 180px;
  }

  button {
    font-size: 1em;
    padding: 0.8em 1.5em;
  }
}

@keyframes flicker {
  0%   { opacity: 1; }
  10%  { opacity: 0.7; }
  20%  { opacity: 1; }
  30%  { opacity: 0.6; }
  40%  { opacity: 1; }
  50%  { opacity: 0.9; }
  60%  { opacity: 0.8; }
  70%  { opacity: 1; }
  80%  { opacity: 0.6; }
  90%  { opacity: 1; }
  100% { opacity: 0.95; }
}

.flicker {
  animation: flicker 3s infinite;
}