* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  width: 100%;
  max-width: 450px;
}

.login-container > h1 {
  text-align: center;
  color: white;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 30px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.login-card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  padding: 40px;
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header h2 {
  color: #333;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.login-header p {
  color: #666;
  font-size: 16px;
}

.alert-message {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.alert-error {
  background: #fee;
  color: #c33;
  border: 1px solid #fcc;
}

.alert-success {
  background: #efe;
  color: #3c3;
  border: 1px solid #cfc;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  color: #333;
  font-size: 14px;
  font-weight: 600;
}

.form-input {
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s ease;
  outline: none;
}

.form-input:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input::placeholder {
  color: #999;
}

.form-group-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: -5px;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: #667eea;
}

.checkbox-label {
  color: #666;
  font-size: 14px;
  cursor: pointer;
  user-select: none;
}

.form-actions {
  margin-top: 10px;
}

.btn-login {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.btn-login:active {
  transform: translateY(0);
}

.login-links {
  margin-top: 25px;
  padding-top: 25px;
  border-top: 1px solid #e0e0e0;
  text-align: center;
}

.login-links a {
  color: #667eea;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.login-links a:hover {
  color: #764ba2;
  text-decoration: underline;
}

@media (max-width: 480px) {
  body {
    padding: 15px;
  }

  .login-container > h1 {
    font-size: 26px;
    margin-bottom: 20px;
  }

  .login-card {
    padding: 30px 25px;
  }

  .login-header h2 {
    font-size: 24px;
  }

  .login-header p {
    font-size: 14px;
  }

  .form-input {
    padding: 10px 14px;
    font-size: 14px;
  }

  .btn-login {
    padding: 12px;
    font-size: 15px;
  }
}