body {
  margin: 0;
  padding: 0;
  background-color: #0d0d0d;
  color: #f4f4f4;
  font-family: 'Segoe UI', sans-serif;
}

nav {
  background-color: #1a1a1a;
  padding: 15px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav a {
  color: #ffcc00;
  margin-left: 20px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.2s;
}

nav a:hover {
  text-decoration: underline;
  color: #ffd700;
}

.container {
  max-width: 500px;
  margin: 50px auto;
  padding: 30px 25px;
  background: #1c1c1c;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(255, 204, 0, 0.15);
}

h2 {
  text-align: center;
  color: #ffcc00;
  font-size: 26px;
  margin-bottom: 20px;
}

input, textarea {
  width: 100%;
  margin: 12px 0;
  padding: 14px;
  border: none;
  border-radius: 6px;
  background: #2a2a2a;
  color: white;
  font-size: 15px;
}

button {
  width: 100%;
  padding: 14px;
  background-color: #ffcc00;
  color: #111;
  border: none;
  border-radius: 6px;
  font-weight: bold;
  font-size: 16px;
  margin-top: 15px;
  cursor: pointer;
  transition: 0.2s;
}

button:hover {
  background-color: #e6b800;
}

@media (max-width: 600px) {
  .container {
    margin: 30px 15px;
    padding: 25px;
  }

  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  nav a {
    margin-left: 0;
    margin-top: 8px;
  }

  .error {
    color: red;
    margin-top: 10px;
    font-size: 14px;
    text-align: center;
  }


}