* {
      box-sizing: border-box;
      padding: 0;
      margin: 0;
    }
    
    body {
      font-family: 'Segoe UI', sans-serif;
      background-color: #ffffff;
      color: #111;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100vh;
      padding: 1rem;
      transition: background-color 0.3s, color 0.3s;
    }
    header {
  position: fixed;
  top: 0;
  left: 0;
  width: 92%;
  margin-left: 4%;
  margin-top: 10px;
  background: rgba(173, 216, 230, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  z-index: 100;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 18px;
  width: 24px;
  cursor: pointer;
}

.nav-icon span {
  height: 3px;
  width: 100%;
  background-color: #004e7c;
  border-radius: 2px;
}

.logo-text {
  font-size: 1.8rem;
  font-weight: 700;
  color: #004e7c;
  text-align: center;
  flex: 1;
  cursor: pointer;
}

.logo-img {
  height: 40px;
  width: auto;
}


/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: -260px;
  width: 250px;
  height: 100vh;
  background: linear-gradient(to bottom, #d6f0ff, #b2e0ff);
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.1);
  padding: 2rem 1rem;
  transition: left 0.3s ease;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sidebar.active {
  left: 0;
}

.sidebar a {
  color: #004e7c;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 10px;
  transition: background 0.3s;
}

.sidebar a:hover {
  background: rgba(0, 78, 124, 0.1);
}

.sidebar .close-btn {
  align-self: flex-end;
  font-size: 1.5rem;
  cursor: pointer;
  color: #004e7c;
}

.sidebar .user-info {
  margin-top: 1rem;
  font-weight: bold;
  font-size: 1rem;
  color: #004e7c;
}

    .login-container {
      background-color: #f9f9f9;
      padding: 2rem;
      border-radius: 16px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
      max-width: 400px;
      width: 100%;
    }
    
    h2 {
      text-align: center;
      margin-bottom: 1.5rem;
      color: #004e7c;
    }
    
    .form-group {
      margin-bottom: 1rem;
    }
    
    .form-group label {
      display: block;
      font-weight: 600;
      margin-bottom: 0.5rem;
    }
    
    .form-group input {
      width: 100%;
      padding: 0.75rem;
      border: 1px solid #ccc;
      border-radius: 10px;
      font-size: 1rem;
    }
    
    .error {
      font-size: 0.85rem;
      color: red;
      margin-top: 0.3rem;
    }
    
    .options {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin: 1rem 0;
    }
    
    .options label {
      display: flex;
      align-items: center;
      gap: 5px;
    }
    
    .options a {
      text-decoration: none;
      color: #00aa88;
      font-size: 0.9rem;
    }
    
    button {
      width: 100%;
      padding: 0.8rem;
      background-color: #00cc88;
      color: white;
      border: none;
      border-radius: 10px;
      font-size: 1rem;
      font-weight: bold;
      cursor: pointer;
      transition: background 0.3s;
    }
    
    button:hover {
      background-color: #00b07a;
    }
    
    .signup-link {
      text-align: center;
      margin-top: 1rem;
      font-size: 0.95rem;
    }
    
    .signup-link a {
      color: #0077cc;
      text-decoration: none;
      font-weight: 600;
    }
    
    .signup-link a:hover {
      text-decoration: underline;
    }
    
        #loading {
      top: 0px;
      width: 100%;
      height: 100%;
      z-index: 10;
      position: fixed;
      background-color: rgba(0, 0, 0, 0.3);
      
    }