body.dark {
  background-color: #121212;
  color: #ffffff;
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
}

.form-container {
  max-width: 450px;
  margin: 5vh auto;
  padding: 2rem;
  background-color: #1e1e1e;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

form input,
form button {
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 1rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  box-sizing: border-box;
}

input {
  background-color: #2a2a2a;
  color: white;
}

input::placeholder {
  color: #aaa;
}

button {
  background-color: #ff4081;
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background-color: #e73370;
}

@media (max-width: 480px) {
  .form-container {
    margin: 2vh 1rem;
    padding: 1.5rem;
  }
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.checkbox-container input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.form-header {
  background-color: #000;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #333;
}

.form-header .logo a {
  color: #ff4081;
  font-size: 1.5rem;
  text-decoration: none;
  font-weight: bold;
}

.form-header nav a {
  color: white;
  text-decoration: none;
  margin-left: 1.5rem;
  font-weight: 500;
}

.form-header nav a:hover {
  color: #aaa;
}