:root {
      --primary: #7f00ff;
      --primary-dark: #6300cc;
      --secondary: #ff4b8b;
      --dark: #222;
      --light: #fff;
      --gray: #777;
      --light-gray: #f4f4f4;
      --border-radius: 8px;
      --box-shadow: 0 4px 20px rgba(0,0,0,0.08);
      --transition: all 0.3s ease;
      --success-color: #00b894;
      --error-color: #d63031;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Poppins', 'Helvetica Neue', Helvetica, Arial, sans-serif;
      line-height: 1.6;
      color: #333;
      background: #f9f9f9;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: var(--primary);
      transition: var(--transition);
    }
    a:hover { color: var(--primary-dark); }

    .beta-banner {
      width: 100%;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: var(--light);
      text-align: center;
      padding: 10px;
      font-size: 14px;
      font-weight: 500;
    }

    header.navbar {
      background: var(--light);
      padding: 20px 5%;
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }

    .navbar .logo a {
      font-weight: 700;
      font-size: 24px;
      color: #000;
      display: flex;
      align-items: center;
    }
    .navbar .logo i {
      color: var(--primary);
      margin-right: 8px;
    }

    main {
      padding: 40px 20px;
      width: 100%;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-grow: 1;
    }

    .login-container {
      background: var(--light);
      padding: 40px;
      border-radius: var(--border-radius);
      box-shadow: var(--box-shadow);
      width: 100%;
      max-width: 450px;
    }

    .login-header {
      text-align: center;
      margin-bottom: 30px;
    }
    .login-header h2 {
      font-size: 2rem;
      color: var(--dark);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .login-header p { color: var(--gray); }

    .social-login {
      display: flex;
      flex-direction: column;
      gap: 15px;
      margin-bottom: 20px;
    }
    .social-btn {
      padding: 12px;
      border: 1px solid #ddd;
      border-radius: var(--border-radius);
      background: var(--light);
      color: #555;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 1rem;
    }
    .social-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
    }
    .social-btn i { font-size: 1.2rem; }

    .divider {
      text-align: center;
      margin: 25px 0;
      color: var(--gray);
      position: relative;
    }
    .divider::before, .divider::after {
      content: '';
      position: absolute;
      top: 50%;
      width: 40%;
      height: 1px;
      background: #ddd;
    }
    .divider::before { left: 0; }
    .divider::after { right: 0; }

    .form-group { margin-bottom: 20px; }
    .form-group label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      color: #444;
    }
    .input-with-icon {
      position: relative;
    }
    .input-with-icon .fas:not(.password-toggle) {
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--gray);
    }
    input[type="text"], input[type="email"], input[type="password"], input[type="tel"] {
      width: 100%;
      padding: 12px 12px 12px 40px;
      border: 1px solid #ddd;
      border-radius: var(--border-radius);
      transition: var(--transition);
      font-family: 'Poppins', sans-serif;
      font-size: 1rem;
    }
    input[type="password"] {
        padding-right: 45px; /* Add space for the icon on the right */
    }
    input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(127,0,255,0.1);
    }

    .password-toggle {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      right: 15px;
      cursor: pointer;
      color: var(--gray);
    }

    .error-message {
      color: var(--error-color);
      font-size: 0.9rem;
      margin-top: 5px;
      min-height: 1.2em;
      display: none;
    }

    .remember-forgot {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 25px;
      font-size: 0.9rem;
    }
    .remember-me {
      display: flex;
      align-items: center;
      gap: 5px;
    }
    .remember-me input {
      accent-color: var(--primary);
    }

    .btn {
      padding: 14px 25px;
      border: none;
      border-radius: var(--border-radius);
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      font-size: 1rem;
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 8px;
      width: 100%;
    }
    .btn-primary {
      background: var(--primary);
      color: var(--light);
      position: relative;
    }
    .btn-primary:hover:not(:disabled) {
      background: var(--primary-dark);
      transform: translateY(-2px);
    }
    .btn:disabled {
      background-color: #a49fc9;
      cursor: not-allowed;
    }

    .loading {
      width: 20px;
      height: 20px;
      border: 3px solid rgba(255, 255, 255, 0.3);
      border-top-color: var(--light);
      border-radius: 50%;
      animation: spin 1s linear infinite;
      display: none;
    }
    @keyframes spin {
      to { transform: rotate(360deg); }
    }

    #loginArrow {
      position: absolute;
      right: 25px;
      transition: var(--transition);
    }

    .signup-link {
      text-align: center;
      margin-top: 30px;
      color: var(--gray);
    }

    .popup-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.5);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 1000;
      opacity: 0;
      transition: opacity 0.3s ease;
      backdrop-filter: blur(5px);
      pointer-events: none;
    }
    .popup-overlay.active {
        opacity: 1;
        pointer-events: auto;
    }
    .popup-content {
      background: var(--light);
      padding: 30px;
      border-radius: var(--border-radius);
      box-shadow: 0 5px 25px rgba(0,0,0,0.2);
      width: 90%;
      max-width: 400px;
      text-align: center;
      transform: scale(0.9);
      transition: transform 0.3s ease;
    }
    .popup-overlay.active .popup-content {
        transform: scale(1);
    }
    .popup-header {
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-bottom: 20px;
    }
    .popup-header i {
      font-size: 3rem;
      color: var(--error-color);
      margin-bottom: 15px;
    }
    .popup-header h3 {
      font-size: 1.5rem;
      color: var(--dark);
      margin: 0;
    }
    .popup-content p {
      color: var(--gray);
      margin-bottom: 25px;
      font-size: 1rem;
    }
    #closePopupBtn {
      width: 100%;
      max-width: 120px;
      margin: 0 auto;
      flex: none; 
    }