.header-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* .logo {
  width: 50px;
  height: 50px;
  object-fit: contain;
} */

body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f5f7fa;
  color: #333;
}

header {
  background-color: #2c3e50;
  padding: 1rem 2rem;
  color: #fff;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
}

.banner {
  background-color: #e74c3c;
  color: #fff;
  text-align: center;
  padding: 0.5rem;
  font-weight: bold;
}

nav {
  display: flex;
  justify-content: center;
  background-color: #34495e;
  flex-wrap: wrap;
}

nav a {
  color: #fff;
  padding: 1rem;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  background-color: #2c3e50;
}

.container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 1.5rem;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h2 {
  color: #2c3e50;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

label {
  font-weight: bold;
}

input[type="text"], input[type="email"], input[type="number"] {
  padding: 0.8rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  width: 100%;
}

input[type="submit"], button {
  background-color: #2c3e50;
  color: #fff;
  padding: 0.8rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
}

input[type="submit"]:hover, button:hover {
  background-color: #1a242f;
}

footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: #777;
  padding: 1rem;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.note {
  font-size: 0.9rem;
  color: #555;
  margin-top: -0.5rem;
}

#responseMsg, #unsubscribeMsg {
  margin-top: 1rem;
  font-weight: bold;
}