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

/* === Full Viewport Handling === */
html, body {
  height: 100%;
  width: 100%;
  overflow-x: hidden;
  font-family: Arial, sans-serif;
}

/* === Animated Gradient Background === */
body {
  background: linear-gradient(-45deg, #4f46e5, #10b981, #06b6d4, #f43f5e);
  background-size: 400% 400%;
  animation: gradientMove 15s ease infinite;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* === Gradient Animation === */
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* === QR Generator Container === */
.container {
  background: #ffffffdd;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-align: center;
  width: 100%;
  max-width: 350px;
  backdrop-filter: blur(10px);
  z-index: 2;
}

/* === Input Field === */
input {
  padding: 10px;
  width: 100%;
  font-size: 16px;
  margin-bottom: 20px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

/* === Download Button === */
#downloadBtn {
  background: #10b981;
  color: #ffffff;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  margin-top: 15px;
  display: inline-block;
  transition: background 0.3s;
}

#downloadBtn:hover {
  background: #0e9e6f;
}

/* === QR Code Section === */
#qrcode {
  margin: 20px 0;
}

/* === Animated Circles Canvas === */
#bgCanvas {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
}

/* === Responsive Fixes === */
@media (max-width: 480px) {
  .container {
    padding: 20px;
    max-width: 90%;
  }

  input {
    font-size: 14px;
  }

  #downloadBtn {
    font-size: 14px;
    padding: 8px 16px;
  }
}