:root {
  --bg: #121212;
  --card: #1e1e1e;
  --primary: #4cafef;
  --text: #f1f1f1;
  --border: #333;
}

body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg);
  font-family: 'Segoe UI', sans-serif;
  color: var(--text);
}

/* Container central */
.login-card {
  background: var(--card);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.7);
  width: 100%;
  max-width: 380px;
  text-align: center;
  animation: fadeIn 0.4s ease;
}

.login-card h2 {
  margin-bottom: 20px;
  font-size: 22px;
  color: var(--primary);
}

/* Labels e inputs */
.login-card label {
  display: block;
  text-align: left;
  margin-bottom: 6px;
  font-weight: bold;
  font-size: 14px;
}

.login-card input {
  width: 95%;
  padding: 12px;
  margin-bottom: 15px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #1a1a1a;
  color: var(--text);
  outline: none;
  transition: border 0.2s ease;
}

.login-card input:focus {
  border: 1px solid var(--primary);
}

/* Botão */
.login-card button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

.login-card button:hover {
  background: #3585c9;
}

/* Mensagem de erro */
.error {
  background: rgba(231, 76, 60, 0.15);
  color: #e74c3c;
  padding: 8px;
  margin-bottom: 15px;
  border-radius: 6px;
  font-size: 14px;
}

/* Animação */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}