body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.banner {
  position: relative;
  height: 300px;
  background: linear-gradient(to right, #007614, #01f055);
  color: white;
}

.banner-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.banner h1 {
  font-size: 3rem;
  margin: 0;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
}

@media (max-width: 768px) {
  .banner {
    height: 200px;
  }

  .banner h1 {
    font-size: 2rem;
  }
}

.contact-wrapper {
  max-width: 680px;
  margin: 2.5em auto 3em;
  padding: 0 1.5em;
}

.contact-intro {
  color: #555;
  margin-bottom: 1.8em;
  font-size: 1.05rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.2em;
}

.form-group label {
  font-weight: bold;
  margin-bottom: 0.35em;
  color: #333;
}

.form-group input,
.form-group textarea {
  padding: 0.6em 0.8em;
  font-size: 1rem;
  font-family: Arial, sans-serif;
  border: 1px solid #ccc;
  border-radius: 4px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #007614;
}

.form-group textarea {
  resize: vertical;
}

.submit-btn {
  display: inline-block;
  padding: 0.6em 1.6em;
  background: #333;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}

.submit-btn:hover:not(:disabled) {
  background: #007614;
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.success-message {
  background: #e6f4ea;
  border: 1px solid #a8d5b0;
  color: #2d6a4f;
  padding: 1em;
  border-radius: 4px;
  margin-bottom: 1.2em;
}

.error-message {
  background: #fdecea;
  border: 1px solid #f5c6c4;
  color: #922;
  padding: 1em;
  border-radius: 4px;
  margin-bottom: 1.2em;
}

footer {
  text-align: center;
  padding: 1.5em 0;
  color: #777;
  font-size: 0.9rem;
  border-top: 1px solid #eee;
}