body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #2a2a2a; /* lightened background */
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.login-container {
  background: #ffffff10; /* semi-transparent white for soft contrast */
  padding: 30px;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  width: 350px;
  backdrop-filter: blur(5px);
  border: 1px solid #3c3c3c;
}

.login-container h2 {
  text-align: center;
  margin-bottom: 25px;
  color: #0ef;
}

.login-container input {
  width: 100%;
  padding: 12px;
  margin: 12px 0;
  background: #3b3b3b;
  border: 1px solid #555;
  border-radius: 6px;
  color: #fff;
  font-size: 15px;
}

.login-container button {
  width: 100%;
  padding: 12px;
  background: #0ef;
  color: #000;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
  transition: background 0.3s ease;
}

.login-container button:hover {
  background: #09c;
}

.error {
  background: #ff4d4d;
  padding: 10px;
  border-radius: 4px;
  text-align: center;
  margin-bottom: 15px;
  font-size: 14px;
}

/* Header logout button */
.logout-btn {
  padding: 8px 15px;
  background: linear-gradient(145deg, #ff4b2b, #ff416c);
  color: white;
  border: none;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.3s ease, transform 0.2s ease;
  float: right;
  margin-right: 20px;
}

.logout-btn:hover {
  background: linear-gradient(145deg, #ff6e54, #ff758c);
  transform: scale(1.05);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

/* Optional header style */
.header {
  background-color: #1f1f2e;
  color: white;
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}