:root {
            --primary-color: #4361ee;
            --primary-dark: #3a56d4;
            --secondary-color: #3f37c9;
            --text-color: #2b2d42;
            --light-gray: #f8f9fa;
            --medium-gray: #e9ecef;
            --dark-gray: #6c757d;
            --error-color: #ef233c;
            --success-color: #4cc9f0;
            --border-radius: 8px;
            --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
@font-face {
  font-family: 'IRANSans';
  src: url('/fonts/IRANSansWeb.woff2') format('woff2'),
       url('/fonts/IRANSansWeb.woff') format('woff'),
       url('/fonts/IRANSansWeb.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'IRANSans', sans-serif;
        }
        
        body {
            background-color: var(--light-gray);
            color: var(--text-color);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 2rem;
            line-height: 1.6;
        }
        
        .auth-container {
            width: 100%;
            max-width: 480px;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            overflow: hidden;
        }
        
        .auth-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 2rem;
            text-align: center;
        }
        
        .auth-header h1 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        
        .auth-header p {
            font-size: 0.875rem;
            opacity: 0.9;
        }
        
        .auth-body {
            padding: 2rem;
        }
        
        .alert {
            padding: 0.75rem 1rem;
            border-radius: var(--border-radius);
            margin-bottom: 1.5rem;
            font-size: 0.875rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .alert-error {
            background-color: rgba(239, 35, 60, 0.1);
            color: var(--error-color);
            border-left: 4px solid var(--error-color);
        }
        
        .form-group {
            margin-bottom: 1.25rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-color);
        }
        
        .form-group label.required::after {
            content: " *";
            color: var(--error-color);
        }
        
        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--medium-gray);
            border-radius: var(--border-radius);
            font-size: 0.9375rem;
            transition: var(--transition);
            background-color: var(--light-gray);
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
            background-color: white;
        }
        
        .input-group {
            position: relative;
        }
        
        .input-group .form-control {
            padding-right: 2.5rem;
        }
        
        .input-icon {
            position: absolute;
            top: 50%;
            right: 1rem;
            transform: translateY(-50%);
            color: var(--dark-gray);
            pointer-events: none;
        }
        
        .password-toggle {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--dark-gray);
            cursor: pointer;
            font-size: 1rem;
        }
        
        .row {
            display: flex;
            gap: 1rem;
        }
        
        .row .form-group {
            flex: 1;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        
        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }
        
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        
        .btn-block {
            display: block;
            width: 100%;
        }
        
        .auth-footer {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 0.875rem;
            color: var(--dark-gray);
        }
        
        .auth-footer a {
            color: var(--primary-color);
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .auth-footer a:hover {
            text-decoration: underline;
        }
        
        @media (max-width: 576px) {
            .auth-container {
                border-radius: 0;
            }
            
            body {
                padding: 0;
            }
            
            .row {
                flex-direction: column;
                gap: 0;
            }
        }