:root {
            --primary-color: #4e73df;
            --secondary-color: #f8f9fc;
            --accent-color: #36b9cc;
            --text-color: #5a5c69;
            --success-color: #1cc88a;
            --warning-color: #f6c23e;
            --danger-color: #e74a3b;
        }
        
        body {
            background-color: var(--secondary-color);
            color: var(--text-color);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            height: 100vh;
            display: flex;
            align-items: center;
        }
        
        .login-container {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
        }
        
        .login-card {
            width: 400px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.2);
            overflow: hidden;
        }
        
        .login-header {
            background: linear-gradient(180deg, var(--primary-color) 10%, #224abe 100%);
            color: white;
            padding: 2rem;
            text-align: center;
        }
        
        .login-body {
            padding: 2rem;
        }
        
        .form-control {
            padding: 0.75rem 1rem;
            border-radius: 5px;
        }
        
        .form-control:focus {
            box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
            border-color: var(--primary-color);
        }
        
        .input-group-text {
            background-color: white;
        }
        
        .btn-login {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem;
            font-weight: 600;
        }
        
        .btn-login:hover {
            background-color: #3a5fc8;
            border-color: #3a5fc8;
        }
        
        .subdomain-hint {
            font-size: 0.85rem;
            color: #6c757d;
            margin-top: 5px;
        }
        
        .tenant-logo {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background-color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 2rem;
            color: var(--primary-color);
            box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.2);
        }