.main {
  min-height: calc(50vh - 100px); /* full height minus header/footer */
  display: flex;
  justify-content: center; /* horizontal center */
  align-items: center;     /* vertical center */
       
}

.login-container {
  background: #f2f4f8; /* light gray background */
  padding: 30px 25px;
  border-radius: 15px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.2);
  width: 380px;
  text-align: center;
  transition: transform 0.2s ease;
}

.login-container:hover {
  transform: translateY(-3px);
}

.login-container img {
  width: 120px;        /* logo fits nicely */
  height: auto;
  margin-bottom: 15px;
}

.login-container h2 {
  margin: 10px 0 5px;
  color: #2c3e50;
  font-size: 22px;
}

.login-container h4 {
  margin: 0 0 20px;
  color: #555;
  font-size: 16px;
  font-weight: normal;
}

.login-container input {
  width: 100%;
  padding: 12px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 15px;
}

.login-container input:focus {
  border-color: #4a90e2;
  outline: none;
  box-shadow: 0 0 4px rgba(74,144,226,0.5);
}

.login-container button {
  width: 100%;
  padding: 12px;
  margin-top: 12px;
  background: #4a90e2;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.login-container button:hover {
  background: #357abd;
}

#error-msg {
  color: red;
  font-size: 14px;
  margin-top: 12px;
}