body {
  background-image: url("../img/background.png"); 
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  background-color: #c9e4ff;
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", sans-serif;
  color: #222;
  min-height: 100vh;
}

.container {
  max-width: 720px;
  margin: auto;
  padding: 2rem;
  line-height: 1.6;
  background: linear-gradient(
    to bottom right,
    rgba(240, 247, 255, 0.6), 
    rgba(245, 250, 255, 0.7)
  );
  border-radius: 1rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

h1, h2, h3 {
  color: #0e99ac;
}

a {
  color: #e67e22;
  text-decoration: none;
}

a:hover {
  color: #d35400;
  text-shadow: 0 0 6px rgba(255, 165, 0, 0.5);
}

code {
  background: #eef;
  padding: 0.2em 0.4em;
  border-radius: 4px;
}

/* Matte glass textarea style */
textarea {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid #c9e2ff;
  border-radius: 12px;
  padding: 1rem;
  color: #333;
  font-family: "Segoe UI", sans-serif;
  font-size: 1rem;
  resize: vertical;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  outline: none;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  -webkit-box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

textarea:focus {
  background: rgba(255, 255, 255, 0.4);
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 0 10px rgba(0, 153, 204, 0.5);
}