* {
      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;
}

.signup-form {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
  margin-top: 80px;
}

.signup-form h2 {
  margin-bottom: 1.5rem;
  color: #004e7c;
  text-align: center;
}

.signup-form label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: bold;
}

.signup-form input[type="text"],
.signup-form input[type="email"],
.signup-form input[type="password"] {
  width: 100%;
  padding: 0.6rem;
  margin-bottom: 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.terms {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.terms input {
  margin-right: 0.5rem;
}

.terms label {
  font-size: 0.9rem;
}

.error {
  color: red;
  font-size: 0.85rem;
  margin-top: -0.8rem;
  margin-bottom: 1rem;
}

.signup-form button {
  background-color: #00cc88;
  color: white;
  padding: 0.8rem;
  width: 100%;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
}

.signup-form button:hover {
  background-color: #00b87d;
}

        #loading {
          top: 0px;
          width: 100%;
          height: 100%;
          z-index: 10;
          position: fixed;
          background-color: rgba(0, 0, 0, 0.3);
          
        }