* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(135deg, #111827, #1d4ed8);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #111827;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-card {
  background: white;
  padding: 32px;
  border-radius: 18px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}

.login-card h1 {
  margin: 0;
  font-size: 28px;
  color: #111827;
}

.login-card p {
  margin: 8px 0 24px;
  color: #6b7280;
}

.campo {
  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
}

.campo label {
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 6px;
  color: #374151;
}

.campo input {
  height: 44px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 0 12px;
  font-size: 15px;
  outline: none;
}

.campo input:focus {
  border-color: #2563eb;
}

button {
  width: 100%;
  height: 44px;
  border: none;
  border-radius: 10px;
  background: #2563eb;
  color: white;
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

.mensagem-erro {
  margin-top: 14px;
  color: #dc2626;
  font-size: 14px;
  text-align: center;
  font-weight: bold;
}